Diagrams.Solve.Polynomial:cubForm from diagrams-solve-0.1, A

Percentage Accurate: 95.3% → 98.3%
Time: 15.3s
Alternatives: 19
Speedup: 0.8×

Specification

?
\[\begin{array}{l} \\ \left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \end{array} \]
(FPCore (x y z t a b)
 :precision binary64
 (+ (- (* x 2.0) (* (* (* y 9.0) z) t)) (* (* a 27.0) b)))
double code(double x, double y, double z, double t, double a, double b) {
	return ((x * 2.0) - (((y * 9.0) * z) * t)) + ((a * 27.0) * b);
}
real(8) function code(x, y, z, t, a, b)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    code = ((x * 2.0d0) - (((y * 9.0d0) * z) * t)) + ((a * 27.0d0) * b)
end function
public static double code(double x, double y, double z, double t, double a, double b) {
	return ((x * 2.0) - (((y * 9.0) * z) * t)) + ((a * 27.0) * b);
}
def code(x, y, z, t, a, b):
	return ((x * 2.0) - (((y * 9.0) * z) * t)) + ((a * 27.0) * b)
function code(x, y, z, t, a, b)
	return Float64(Float64(Float64(x * 2.0) - Float64(Float64(Float64(y * 9.0) * z) * t)) + Float64(Float64(a * 27.0) * b))
end
function tmp = code(x, y, z, t, a, b)
	tmp = ((x * 2.0) - (((y * 9.0) * z) * t)) + ((a * 27.0) * b);
end
code[x_, y_, z_, t_, a_, b_] := N[(N[(N[(x * 2.0), $MachinePrecision] - N[(N[(N[(y * 9.0), $MachinePrecision] * z), $MachinePrecision] * t), $MachinePrecision]), $MachinePrecision] + N[(N[(a * 27.0), $MachinePrecision] * b), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b
\end{array}

Sampling outcomes in binary64 precision:

Local Percentage Accuracy vs ?

The average percentage accuracy by input value. Horizontal axis shows value of an input variable; the variable is choosen in the title. Vertical axis is accuracy; higher is better. Red represent the original program, while blue represents Herbie's suggestion. These can be toggled with buttons below the plot. The line is an average while dots represent individual samples.

Accuracy vs Speed?

Herbie found 19 alternatives:

AlternativeAccuracySpeedup
The accuracy (vertical axis) and speed (horizontal axis) of each alternatives. Up and to the right is better. The red square shows the initial program, and each blue circle shows an alternative.The line shows the best available speed-accuracy tradeoffs.

Initial Program: 95.3% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \end{array} \]
(FPCore (x y z t a b)
 :precision binary64
 (+ (- (* x 2.0) (* (* (* y 9.0) z) t)) (* (* a 27.0) b)))
double code(double x, double y, double z, double t, double a, double b) {
	return ((x * 2.0) - (((y * 9.0) * z) * t)) + ((a * 27.0) * b);
}
real(8) function code(x, y, z, t, a, b)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    code = ((x * 2.0d0) - (((y * 9.0d0) * z) * t)) + ((a * 27.0d0) * b)
end function
public static double code(double x, double y, double z, double t, double a, double b) {
	return ((x * 2.0) - (((y * 9.0) * z) * t)) + ((a * 27.0) * b);
}
def code(x, y, z, t, a, b):
	return ((x * 2.0) - (((y * 9.0) * z) * t)) + ((a * 27.0) * b)
function code(x, y, z, t, a, b)
	return Float64(Float64(Float64(x * 2.0) - Float64(Float64(Float64(y * 9.0) * z) * t)) + Float64(Float64(a * 27.0) * b))
end
function tmp = code(x, y, z, t, a, b)
	tmp = ((x * 2.0) - (((y * 9.0) * z) * t)) + ((a * 27.0) * b);
end
code[x_, y_, z_, t_, a_, b_] := N[(N[(N[(x * 2.0), $MachinePrecision] - N[(N[(N[(y * 9.0), $MachinePrecision] * z), $MachinePrecision] * t), $MachinePrecision]), $MachinePrecision] + N[(N[(a * 27.0), $MachinePrecision] * b), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b
\end{array}

Alternative 1: 98.3% accurate, 0.1× speedup?

\[\begin{array}{l} [x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\ \\ \begin{array}{l} \mathbf{if}\;y \cdot 9 \leq -5 \cdot 10^{+172}:\\ \;\;\;\;y \cdot \left(\left(2 \cdot \frac{x}{y} + 27 \cdot \frac{a \cdot b}{y}\right) - 9 \cdot \left(t \cdot z\right)\right)\\ \mathbf{else}:\\ \;\;\;\;\mathsf{fma}\left(a, 27 \cdot b, \mathsf{fma}\left(x, 2, t \cdot \left(y \cdot \left(z \cdot -9\right)\right)\right)\right)\\ \end{array} \end{array} \]
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
(FPCore (x y z t a b)
 :precision binary64
 (if (<= (* y 9.0) -5e+172)
   (* y (- (+ (* 2.0 (/ x y)) (* 27.0 (/ (* a b) y))) (* 9.0 (* t z))))
   (fma a (* 27.0 b) (fma x 2.0 (* t (* y (* z -9.0)))))))
assert(x < y && y < z && z < t && t < a && a < b);
double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if ((y * 9.0) <= -5e+172) {
		tmp = y * (((2.0 * (x / y)) + (27.0 * ((a * b) / y))) - (9.0 * (t * z)));
	} else {
		tmp = fma(a, (27.0 * b), fma(x, 2.0, (t * (y * (z * -9.0)))));
	}
	return tmp;
}
x, y, z, t, a, b = sort([x, y, z, t, a, b])
function code(x, y, z, t, a, b)
	tmp = 0.0
	if (Float64(y * 9.0) <= -5e+172)
		tmp = Float64(y * Float64(Float64(Float64(2.0 * Float64(x / y)) + Float64(27.0 * Float64(Float64(a * b) / y))) - Float64(9.0 * Float64(t * z))));
	else
		tmp = fma(a, Float64(27.0 * b), fma(x, 2.0, Float64(t * Float64(y * Float64(z * -9.0)))));
	end
	return tmp
end
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
code[x_, y_, z_, t_, a_, b_] := If[LessEqual[N[(y * 9.0), $MachinePrecision], -5e+172], N[(y * N[(N[(N[(2.0 * N[(x / y), $MachinePrecision]), $MachinePrecision] + N[(27.0 * N[(N[(a * b), $MachinePrecision] / y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - N[(9.0 * N[(t * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(a * N[(27.0 * b), $MachinePrecision] + N[(x * 2.0 + N[(t * N[(y * N[(z * -9.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
[x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\
\\
\begin{array}{l}
\mathbf{if}\;y \cdot 9 \leq -5 \cdot 10^{+172}:\\
\;\;\;\;y \cdot \left(\left(2 \cdot \frac{x}{y} + 27 \cdot \frac{a \cdot b}{y}\right) - 9 \cdot \left(t \cdot z\right)\right)\\

\mathbf{else}:\\
\;\;\;\;\mathsf{fma}\left(a, 27 \cdot b, \mathsf{fma}\left(x, 2, t \cdot \left(y \cdot \left(z \cdot -9\right)\right)\right)\right)\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if (*.f64 y #s(literal 9 binary64)) < -5.0000000000000001e172

    1. Initial program 71.5%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-71.5%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative71.5%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative71.5%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*71.6%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-71.6%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*71.5%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative71.5%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative71.5%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*97.1%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*97.1%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified97.1%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in y around inf 97.1%

      \[\leadsto \color{blue}{y \cdot \left(\left(2 \cdot \frac{x}{y} + 27 \cdot \frac{a \cdot b}{y}\right) - 9 \cdot \left(t \cdot z\right)\right)} \]

    if -5.0000000000000001e172 < (*.f64 y #s(literal 9 binary64))

    1. Initial program 93.7%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. +-commutative93.7%

        \[\leadsto \color{blue}{\left(a \cdot 27\right) \cdot b + \left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right)} \]
      2. associate-+r-93.7%

        \[\leadsto \color{blue}{\left(\left(a \cdot 27\right) \cdot b + x \cdot 2\right) - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t} \]
      3. *-commutative93.7%

        \[\leadsto \left(\left(a \cdot 27\right) \cdot b + x \cdot 2\right) - \color{blue}{t \cdot \left(\left(y \cdot 9\right) \cdot z\right)} \]
      4. cancel-sign-sub-inv93.7%

        \[\leadsto \color{blue}{\left(\left(a \cdot 27\right) \cdot b + x \cdot 2\right) + \left(-t\right) \cdot \left(\left(y \cdot 9\right) \cdot z\right)} \]
      5. associate-*r*93.3%

        \[\leadsto \left(\left(a \cdot 27\right) \cdot b + x \cdot 2\right) + \color{blue}{\left(\left(-t\right) \cdot \left(y \cdot 9\right)\right) \cdot z} \]
      6. distribute-lft-neg-in93.3%

        \[\leadsto \left(\left(a \cdot 27\right) \cdot b + x \cdot 2\right) + \color{blue}{\left(-t \cdot \left(y \cdot 9\right)\right)} \cdot z \]
      7. *-commutative93.3%

        \[\leadsto \left(\left(a \cdot 27\right) \cdot b + x \cdot 2\right) + \left(-\color{blue}{\left(y \cdot 9\right) \cdot t}\right) \cdot z \]
      8. cancel-sign-sub-inv93.3%

        \[\leadsto \color{blue}{\left(\left(a \cdot 27\right) \cdot b + x \cdot 2\right) - \left(\left(y \cdot 9\right) \cdot t\right) \cdot z} \]
      9. associate-+r-93.3%

        \[\leadsto \color{blue}{\left(a \cdot 27\right) \cdot b + \left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot t\right) \cdot z\right)} \]
      10. associate-*l*93.7%

        \[\leadsto \color{blue}{a \cdot \left(27 \cdot b\right)} + \left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot t\right) \cdot z\right) \]
      11. fma-define94.2%

        \[\leadsto \color{blue}{\mathsf{fma}\left(a, 27 \cdot b, x \cdot 2 - \left(\left(y \cdot 9\right) \cdot t\right) \cdot z\right)} \]
      12. cancel-sign-sub-inv94.2%

        \[\leadsto \mathsf{fma}\left(a, 27 \cdot b, \color{blue}{x \cdot 2 + \left(-\left(y \cdot 9\right) \cdot t\right) \cdot z}\right) \]
      13. fma-define94.2%

        \[\leadsto \mathsf{fma}\left(a, 27 \cdot b, \color{blue}{\mathsf{fma}\left(x, 2, \left(-\left(y \cdot 9\right) \cdot t\right) \cdot z\right)}\right) \]
      14. *-commutative94.2%

        \[\leadsto \mathsf{fma}\left(a, 27 \cdot b, \mathsf{fma}\left(x, 2, \left(-\color{blue}{t \cdot \left(y \cdot 9\right)}\right) \cdot z\right)\right) \]
      15. distribute-rgt-neg-in94.2%

        \[\leadsto \mathsf{fma}\left(a, 27 \cdot b, \mathsf{fma}\left(x, 2, \color{blue}{\left(t \cdot \left(-y \cdot 9\right)\right)} \cdot z\right)\right) \]
      16. distribute-lft-neg-out94.2%

        \[\leadsto \mathsf{fma}\left(a, 27 \cdot b, \mathsf{fma}\left(x, 2, \left(t \cdot \color{blue}{\left(\left(-y\right) \cdot 9\right)}\right) \cdot z\right)\right) \]
      17. associate-*r*94.5%

        \[\leadsto \mathsf{fma}\left(a, 27 \cdot b, \mathsf{fma}\left(x, 2, \color{blue}{t \cdot \left(\left(\left(-y\right) \cdot 9\right) \cdot z\right)}\right)\right) \]
      18. associate-*l*94.5%

        \[\leadsto \mathsf{fma}\left(a, 27 \cdot b, \mathsf{fma}\left(x, 2, t \cdot \color{blue}{\left(\left(-y\right) \cdot \left(9 \cdot z\right)\right)}\right)\right) \]
    3. Simplified94.5%

      \[\leadsto \color{blue}{\mathsf{fma}\left(a, 27 \cdot b, \mathsf{fma}\left(x, 2, t \cdot \left(y \cdot \left(-9 \cdot z\right)\right)\right)\right)} \]
    4. Add Preprocessing
  3. Recombined 2 regimes into one program.
  4. Final simplification94.9%

    \[\leadsto \begin{array}{l} \mathbf{if}\;y \cdot 9 \leq -5 \cdot 10^{+172}:\\ \;\;\;\;y \cdot \left(\left(2 \cdot \frac{x}{y} + 27 \cdot \frac{a \cdot b}{y}\right) - 9 \cdot \left(t \cdot z\right)\right)\\ \mathbf{else}:\\ \;\;\;\;\mathsf{fma}\left(a, 27 \cdot b, \mathsf{fma}\left(x, 2, t \cdot \left(y \cdot \left(z \cdot -9\right)\right)\right)\right)\\ \end{array} \]
  5. Add Preprocessing

Alternative 2: 80.5% accurate, 0.6× speedup?

\[\begin{array}{l} [x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\ \\ \begin{array}{l} t_1 := y \cdot \left(t \cdot \left(z \cdot -9\right)\right) + b \cdot \left(27 \cdot a\right)\\ \mathbf{if}\;z \leq -2.5 \cdot 10^{-40}:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;z \leq 5.2 \cdot 10^{-58}:\\ \;\;\;\;2 \cdot x + 27 \cdot \left(a \cdot b\right)\\ \mathbf{elif}\;z \leq 350000000:\\ \;\;\;\;t\_1\\ \mathbf{else}:\\ \;\;\;\;2 \cdot x - 9 \cdot \left(t \cdot \left(y \cdot z\right)\right)\\ \end{array} \end{array} \]
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
(FPCore (x y z t a b)
 :precision binary64
 (let* ((t_1 (+ (* y (* t (* z -9.0))) (* b (* 27.0 a)))))
   (if (<= z -2.5e-40)
     t_1
     (if (<= z 5.2e-58)
       (+ (* 2.0 x) (* 27.0 (* a b)))
       (if (<= z 350000000.0) t_1 (- (* 2.0 x) (* 9.0 (* t (* y z)))))))))
assert(x < y && y < z && z < t && t < a && a < b);
double code(double x, double y, double z, double t, double a, double b) {
	double t_1 = (y * (t * (z * -9.0))) + (b * (27.0 * a));
	double tmp;
	if (z <= -2.5e-40) {
		tmp = t_1;
	} else if (z <= 5.2e-58) {
		tmp = (2.0 * x) + (27.0 * (a * b));
	} else if (z <= 350000000.0) {
		tmp = t_1;
	} else {
		tmp = (2.0 * x) - (9.0 * (t * (y * z)));
	}
	return tmp;
}
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
real(8) function code(x, y, z, t, a, b)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8) :: t_1
    real(8) :: tmp
    t_1 = (y * (t * (z * (-9.0d0)))) + (b * (27.0d0 * a))
    if (z <= (-2.5d-40)) then
        tmp = t_1
    else if (z <= 5.2d-58) then
        tmp = (2.0d0 * x) + (27.0d0 * (a * b))
    else if (z <= 350000000.0d0) then
        tmp = t_1
    else
        tmp = (2.0d0 * x) - (9.0d0 * (t * (y * z)))
    end if
    code = tmp
end function
assert x < y && y < z && z < t && t < a && a < b;
public static double code(double x, double y, double z, double t, double a, double b) {
	double t_1 = (y * (t * (z * -9.0))) + (b * (27.0 * a));
	double tmp;
	if (z <= -2.5e-40) {
		tmp = t_1;
	} else if (z <= 5.2e-58) {
		tmp = (2.0 * x) + (27.0 * (a * b));
	} else if (z <= 350000000.0) {
		tmp = t_1;
	} else {
		tmp = (2.0 * x) - (9.0 * (t * (y * z)));
	}
	return tmp;
}
[x, y, z, t, a, b] = sort([x, y, z, t, a, b])
def code(x, y, z, t, a, b):
	t_1 = (y * (t * (z * -9.0))) + (b * (27.0 * a))
	tmp = 0
	if z <= -2.5e-40:
		tmp = t_1
	elif z <= 5.2e-58:
		tmp = (2.0 * x) + (27.0 * (a * b))
	elif z <= 350000000.0:
		tmp = t_1
	else:
		tmp = (2.0 * x) - (9.0 * (t * (y * z)))
	return tmp
x, y, z, t, a, b = sort([x, y, z, t, a, b])
function code(x, y, z, t, a, b)
	t_1 = Float64(Float64(y * Float64(t * Float64(z * -9.0))) + Float64(b * Float64(27.0 * a)))
	tmp = 0.0
	if (z <= -2.5e-40)
		tmp = t_1;
	elseif (z <= 5.2e-58)
		tmp = Float64(Float64(2.0 * x) + Float64(27.0 * Float64(a * b)));
	elseif (z <= 350000000.0)
		tmp = t_1;
	else
		tmp = Float64(Float64(2.0 * x) - Float64(9.0 * Float64(t * Float64(y * z))));
	end
	return tmp
end
x, y, z, t, a, b = num2cell(sort([x, y, z, t, a, b])){:}
function tmp_2 = code(x, y, z, t, a, b)
	t_1 = (y * (t * (z * -9.0))) + (b * (27.0 * a));
	tmp = 0.0;
	if (z <= -2.5e-40)
		tmp = t_1;
	elseif (z <= 5.2e-58)
		tmp = (2.0 * x) + (27.0 * (a * b));
	elseif (z <= 350000000.0)
		tmp = t_1;
	else
		tmp = (2.0 * x) - (9.0 * (t * (y * z)));
	end
	tmp_2 = tmp;
end
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
code[x_, y_, z_, t_, a_, b_] := Block[{t$95$1 = N[(N[(y * N[(t * N[(z * -9.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(b * N[(27.0 * a), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[z, -2.5e-40], t$95$1, If[LessEqual[z, 5.2e-58], N[(N[(2.0 * x), $MachinePrecision] + N[(27.0 * N[(a * b), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[z, 350000000.0], t$95$1, N[(N[(2.0 * x), $MachinePrecision] - N[(9.0 * N[(t * N[(y * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]]]
\begin{array}{l}
[x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\
\\
\begin{array}{l}
t_1 := y \cdot \left(t \cdot \left(z \cdot -9\right)\right) + b \cdot \left(27 \cdot a\right)\\
\mathbf{if}\;z \leq -2.5 \cdot 10^{-40}:\\
\;\;\;\;t\_1\\

\mathbf{elif}\;z \leq 5.2 \cdot 10^{-58}:\\
\;\;\;\;2 \cdot x + 27 \cdot \left(a \cdot b\right)\\

\mathbf{elif}\;z \leq 350000000:\\
\;\;\;\;t\_1\\

\mathbf{else}:\\
\;\;\;\;2 \cdot x - 9 \cdot \left(t \cdot \left(y \cdot z\right)\right)\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if z < -2.49999999999999982e-40 or 5.20000000000000013e-58 < z < 3.5e8

    1. Initial program 88.1%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-88.1%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative88.1%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative88.1%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*88.1%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-88.1%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*88.1%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative88.1%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative88.1%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*93.8%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*93.8%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified93.8%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in x around 0 71.2%

      \[\leadsto \color{blue}{27 \cdot \left(a \cdot b\right) - 9 \cdot \left(t \cdot \left(y \cdot z\right)\right)} \]
    6. Step-by-step derivation
      1. sub-neg71.2%

        \[\leadsto \color{blue}{27 \cdot \left(a \cdot b\right) + \left(-9 \cdot \left(t \cdot \left(y \cdot z\right)\right)\right)} \]
      2. +-commutative71.2%

        \[\leadsto \color{blue}{\left(-9 \cdot \left(t \cdot \left(y \cdot z\right)\right)\right) + 27 \cdot \left(a \cdot b\right)} \]
      3. distribute-lft-neg-in71.2%

        \[\leadsto \color{blue}{\left(-9\right) \cdot \left(t \cdot \left(y \cdot z\right)\right)} + 27 \cdot \left(a \cdot b\right) \]
      4. metadata-eval71.2%

        \[\leadsto \color{blue}{-9} \cdot \left(t \cdot \left(y \cdot z\right)\right) + 27 \cdot \left(a \cdot b\right) \]
      5. *-commutative71.2%

        \[\leadsto -9 \cdot \left(t \cdot \color{blue}{\left(z \cdot y\right)}\right) + 27 \cdot \left(a \cdot b\right) \]
      6. associate-*r*76.0%

        \[\leadsto -9 \cdot \color{blue}{\left(\left(t \cdot z\right) \cdot y\right)} + 27 \cdot \left(a \cdot b\right) \]
      7. associate-*l*76.0%

        \[\leadsto \color{blue}{\left(-9 \cdot \left(t \cdot z\right)\right) \cdot y} + 27 \cdot \left(a \cdot b\right) \]
      8. *-commutative76.0%

        \[\leadsto \color{blue}{y \cdot \left(-9 \cdot \left(t \cdot z\right)\right)} + 27 \cdot \left(a \cdot b\right) \]
      9. *-commutative76.0%

        \[\leadsto y \cdot \color{blue}{\left(\left(t \cdot z\right) \cdot -9\right)} + 27 \cdot \left(a \cdot b\right) \]
      10. associate-*l*75.9%

        \[\leadsto y \cdot \color{blue}{\left(t \cdot \left(z \cdot -9\right)\right)} + 27 \cdot \left(a \cdot b\right) \]
      11. associate-*r*75.9%

        \[\leadsto y \cdot \left(t \cdot \left(z \cdot -9\right)\right) + \color{blue}{\left(27 \cdot a\right) \cdot b} \]
      12. *-commutative75.9%

        \[\leadsto y \cdot \left(t \cdot \left(z \cdot -9\right)\right) + \color{blue}{b \cdot \left(27 \cdot a\right)} \]
    7. Applied egg-rr75.9%

      \[\leadsto \color{blue}{y \cdot \left(t \cdot \left(z \cdot -9\right)\right) + b \cdot \left(27 \cdot a\right)} \]

    if -2.49999999999999982e-40 < z < 5.20000000000000013e-58

    1. Initial program 97.7%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-97.7%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative97.7%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative97.7%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*97.7%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-97.7%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*97.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative97.7%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative97.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*97.8%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*98.8%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified98.8%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in y around 0 82.5%

      \[\leadsto \color{blue}{2 \cdot x + 27 \cdot \left(a \cdot b\right)} \]

    if 3.5e8 < z

    1. Initial program 84.5%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-84.5%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative84.5%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative84.5%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*84.5%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-84.5%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*84.5%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative84.5%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative84.5%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*92.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*92.7%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified92.7%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in a around 0 66.5%

      \[\leadsto \color{blue}{2 \cdot x - 9 \cdot \left(t \cdot \left(y \cdot z\right)\right)} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification75.6%

    \[\leadsto \begin{array}{l} \mathbf{if}\;z \leq -2.5 \cdot 10^{-40}:\\ \;\;\;\;y \cdot \left(t \cdot \left(z \cdot -9\right)\right) + b \cdot \left(27 \cdot a\right)\\ \mathbf{elif}\;z \leq 5.2 \cdot 10^{-58}:\\ \;\;\;\;2 \cdot x + 27 \cdot \left(a \cdot b\right)\\ \mathbf{elif}\;z \leq 350000000:\\ \;\;\;\;y \cdot \left(t \cdot \left(z \cdot -9\right)\right) + b \cdot \left(27 \cdot a\right)\\ \mathbf{else}:\\ \;\;\;\;2 \cdot x - 9 \cdot \left(t \cdot \left(y \cdot z\right)\right)\\ \end{array} \]
  5. Add Preprocessing

Alternative 3: 98.1% accurate, 0.6× speedup?

\[\begin{array}{l} [x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\ \\ \begin{array}{l} \mathbf{if}\;y \cdot 9 \leq -5 \cdot 10^{+172}:\\ \;\;\;\;y \cdot \left(\left(2 \cdot \frac{x}{y} + 27 \cdot \frac{a \cdot b}{y}\right) - 9 \cdot \left(t \cdot z\right)\right)\\ \mathbf{else}:\\ \;\;\;\;\left(2 \cdot x - t \cdot \left(\left(y \cdot 9\right) \cdot z\right)\right) + b \cdot \left(27 \cdot a\right)\\ \end{array} \end{array} \]
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
(FPCore (x y z t a b)
 :precision binary64
 (if (<= (* y 9.0) -5e+172)
   (* y (- (+ (* 2.0 (/ x y)) (* 27.0 (/ (* a b) y))) (* 9.0 (* t z))))
   (+ (- (* 2.0 x) (* t (* (* y 9.0) z))) (* b (* 27.0 a)))))
assert(x < y && y < z && z < t && t < a && a < b);
double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if ((y * 9.0) <= -5e+172) {
		tmp = y * (((2.0 * (x / y)) + (27.0 * ((a * b) / y))) - (9.0 * (t * z)));
	} else {
		tmp = ((2.0 * x) - (t * ((y * 9.0) * z))) + (b * (27.0 * a));
	}
	return tmp;
}
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
real(8) function code(x, y, z, t, a, b)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8) :: tmp
    if ((y * 9.0d0) <= (-5d+172)) then
        tmp = y * (((2.0d0 * (x / y)) + (27.0d0 * ((a * b) / y))) - (9.0d0 * (t * z)))
    else
        tmp = ((2.0d0 * x) - (t * ((y * 9.0d0) * z))) + (b * (27.0d0 * a))
    end if
    code = tmp
end function
assert x < y && y < z && z < t && t < a && a < b;
public static double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if ((y * 9.0) <= -5e+172) {
		tmp = y * (((2.0 * (x / y)) + (27.0 * ((a * b) / y))) - (9.0 * (t * z)));
	} else {
		tmp = ((2.0 * x) - (t * ((y * 9.0) * z))) + (b * (27.0 * a));
	}
	return tmp;
}
[x, y, z, t, a, b] = sort([x, y, z, t, a, b])
def code(x, y, z, t, a, b):
	tmp = 0
	if (y * 9.0) <= -5e+172:
		tmp = y * (((2.0 * (x / y)) + (27.0 * ((a * b) / y))) - (9.0 * (t * z)))
	else:
		tmp = ((2.0 * x) - (t * ((y * 9.0) * z))) + (b * (27.0 * a))
	return tmp
x, y, z, t, a, b = sort([x, y, z, t, a, b])
function code(x, y, z, t, a, b)
	tmp = 0.0
	if (Float64(y * 9.0) <= -5e+172)
		tmp = Float64(y * Float64(Float64(Float64(2.0 * Float64(x / y)) + Float64(27.0 * Float64(Float64(a * b) / y))) - Float64(9.0 * Float64(t * z))));
	else
		tmp = Float64(Float64(Float64(2.0 * x) - Float64(t * Float64(Float64(y * 9.0) * z))) + Float64(b * Float64(27.0 * a)));
	end
	return tmp
end
x, y, z, t, a, b = num2cell(sort([x, y, z, t, a, b])){:}
function tmp_2 = code(x, y, z, t, a, b)
	tmp = 0.0;
	if ((y * 9.0) <= -5e+172)
		tmp = y * (((2.0 * (x / y)) + (27.0 * ((a * b) / y))) - (9.0 * (t * z)));
	else
		tmp = ((2.0 * x) - (t * ((y * 9.0) * z))) + (b * (27.0 * a));
	end
	tmp_2 = tmp;
end
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
code[x_, y_, z_, t_, a_, b_] := If[LessEqual[N[(y * 9.0), $MachinePrecision], -5e+172], N[(y * N[(N[(N[(2.0 * N[(x / y), $MachinePrecision]), $MachinePrecision] + N[(27.0 * N[(N[(a * b), $MachinePrecision] / y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - N[(9.0 * N[(t * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(N[(N[(2.0 * x), $MachinePrecision] - N[(t * N[(N[(y * 9.0), $MachinePrecision] * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(b * N[(27.0 * a), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
[x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\
\\
\begin{array}{l}
\mathbf{if}\;y \cdot 9 \leq -5 \cdot 10^{+172}:\\
\;\;\;\;y \cdot \left(\left(2 \cdot \frac{x}{y} + 27 \cdot \frac{a \cdot b}{y}\right) - 9 \cdot \left(t \cdot z\right)\right)\\

\mathbf{else}:\\
\;\;\;\;\left(2 \cdot x - t \cdot \left(\left(y \cdot 9\right) \cdot z\right)\right) + b \cdot \left(27 \cdot a\right)\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if (*.f64 y #s(literal 9 binary64)) < -5.0000000000000001e172

    1. Initial program 71.5%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-71.5%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative71.5%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative71.5%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*71.6%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-71.6%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*71.5%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative71.5%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative71.5%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*97.1%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*97.1%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified97.1%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in y around inf 97.1%

      \[\leadsto \color{blue}{y \cdot \left(\left(2 \cdot \frac{x}{y} + 27 \cdot \frac{a \cdot b}{y}\right) - 9 \cdot \left(t \cdot z\right)\right)} \]

    if -5.0000000000000001e172 < (*.f64 y #s(literal 9 binary64))

    1. Initial program 93.7%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Add Preprocessing
  3. Recombined 2 regimes into one program.
  4. Final simplification94.2%

    \[\leadsto \begin{array}{l} \mathbf{if}\;y \cdot 9 \leq -5 \cdot 10^{+172}:\\ \;\;\;\;y \cdot \left(\left(2 \cdot \frac{x}{y} + 27 \cdot \frac{a \cdot b}{y}\right) - 9 \cdot \left(t \cdot z\right)\right)\\ \mathbf{else}:\\ \;\;\;\;\left(2 \cdot x - t \cdot \left(\left(y \cdot 9\right) \cdot z\right)\right) + b \cdot \left(27 \cdot a\right)\\ \end{array} \]
  5. Add Preprocessing

Alternative 4: 48.1% accurate, 0.6× speedup?

\[\begin{array}{l} [x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\ \\ \begin{array}{l} t_1 := -9 \cdot \left(t \cdot \left(y \cdot z\right)\right)\\ \mathbf{if}\;z \leq -3.1 \cdot 10^{-40}:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;z \leq -8.5 \cdot 10^{-242}:\\ \;\;\;\;2 \cdot x\\ \mathbf{elif}\;z \leq -1.5 \cdot 10^{-293}:\\ \;\;\;\;b \cdot \left(27 \cdot a\right)\\ \mathbf{elif}\;z \leq 10^{-58}:\\ \;\;\;\;2 \cdot x\\ \mathbf{else}:\\ \;\;\;\;t\_1\\ \end{array} \end{array} \]
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
(FPCore (x y z t a b)
 :precision binary64
 (let* ((t_1 (* -9.0 (* t (* y z)))))
   (if (<= z -3.1e-40)
     t_1
     (if (<= z -8.5e-242)
       (* 2.0 x)
       (if (<= z -1.5e-293)
         (* b (* 27.0 a))
         (if (<= z 1e-58) (* 2.0 x) t_1))))))
assert(x < y && y < z && z < t && t < a && a < b);
double code(double x, double y, double z, double t, double a, double b) {
	double t_1 = -9.0 * (t * (y * z));
	double tmp;
	if (z <= -3.1e-40) {
		tmp = t_1;
	} else if (z <= -8.5e-242) {
		tmp = 2.0 * x;
	} else if (z <= -1.5e-293) {
		tmp = b * (27.0 * a);
	} else if (z <= 1e-58) {
		tmp = 2.0 * x;
	} else {
		tmp = t_1;
	}
	return tmp;
}
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
real(8) function code(x, y, z, t, a, b)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8) :: t_1
    real(8) :: tmp
    t_1 = (-9.0d0) * (t * (y * z))
    if (z <= (-3.1d-40)) then
        tmp = t_1
    else if (z <= (-8.5d-242)) then
        tmp = 2.0d0 * x
    else if (z <= (-1.5d-293)) then
        tmp = b * (27.0d0 * a)
    else if (z <= 1d-58) then
        tmp = 2.0d0 * x
    else
        tmp = t_1
    end if
    code = tmp
end function
assert x < y && y < z && z < t && t < a && a < b;
public static double code(double x, double y, double z, double t, double a, double b) {
	double t_1 = -9.0 * (t * (y * z));
	double tmp;
	if (z <= -3.1e-40) {
		tmp = t_1;
	} else if (z <= -8.5e-242) {
		tmp = 2.0 * x;
	} else if (z <= -1.5e-293) {
		tmp = b * (27.0 * a);
	} else if (z <= 1e-58) {
		tmp = 2.0 * x;
	} else {
		tmp = t_1;
	}
	return tmp;
}
[x, y, z, t, a, b] = sort([x, y, z, t, a, b])
def code(x, y, z, t, a, b):
	t_1 = -9.0 * (t * (y * z))
	tmp = 0
	if z <= -3.1e-40:
		tmp = t_1
	elif z <= -8.5e-242:
		tmp = 2.0 * x
	elif z <= -1.5e-293:
		tmp = b * (27.0 * a)
	elif z <= 1e-58:
		tmp = 2.0 * x
	else:
		tmp = t_1
	return tmp
x, y, z, t, a, b = sort([x, y, z, t, a, b])
function code(x, y, z, t, a, b)
	t_1 = Float64(-9.0 * Float64(t * Float64(y * z)))
	tmp = 0.0
	if (z <= -3.1e-40)
		tmp = t_1;
	elseif (z <= -8.5e-242)
		tmp = Float64(2.0 * x);
	elseif (z <= -1.5e-293)
		tmp = Float64(b * Float64(27.0 * a));
	elseif (z <= 1e-58)
		tmp = Float64(2.0 * x);
	else
		tmp = t_1;
	end
	return tmp
end
x, y, z, t, a, b = num2cell(sort([x, y, z, t, a, b])){:}
function tmp_2 = code(x, y, z, t, a, b)
	t_1 = -9.0 * (t * (y * z));
	tmp = 0.0;
	if (z <= -3.1e-40)
		tmp = t_1;
	elseif (z <= -8.5e-242)
		tmp = 2.0 * x;
	elseif (z <= -1.5e-293)
		tmp = b * (27.0 * a);
	elseif (z <= 1e-58)
		tmp = 2.0 * x;
	else
		tmp = t_1;
	end
	tmp_2 = tmp;
end
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
code[x_, y_, z_, t_, a_, b_] := Block[{t$95$1 = N[(-9.0 * N[(t * N[(y * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[z, -3.1e-40], t$95$1, If[LessEqual[z, -8.5e-242], N[(2.0 * x), $MachinePrecision], If[LessEqual[z, -1.5e-293], N[(b * N[(27.0 * a), $MachinePrecision]), $MachinePrecision], If[LessEqual[z, 1e-58], N[(2.0 * x), $MachinePrecision], t$95$1]]]]]
\begin{array}{l}
[x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\
\\
\begin{array}{l}
t_1 := -9 \cdot \left(t \cdot \left(y \cdot z\right)\right)\\
\mathbf{if}\;z \leq -3.1 \cdot 10^{-40}:\\
\;\;\;\;t\_1\\

\mathbf{elif}\;z \leq -8.5 \cdot 10^{-242}:\\
\;\;\;\;2 \cdot x\\

\mathbf{elif}\;z \leq -1.5 \cdot 10^{-293}:\\
\;\;\;\;b \cdot \left(27 \cdot a\right)\\

\mathbf{elif}\;z \leq 10^{-58}:\\
\;\;\;\;2 \cdot x\\

\mathbf{else}:\\
\;\;\;\;t\_1\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if z < -3.10000000000000011e-40 or 1e-58 < z

    1. Initial program 86.6%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-86.6%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative86.6%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative86.6%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*86.6%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-86.6%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*86.6%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative86.6%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative86.6%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*93.4%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*93.3%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified93.3%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in y around inf 45.3%

      \[\leadsto \color{blue}{-9 \cdot \left(t \cdot \left(y \cdot z\right)\right)} \]

    if -3.10000000000000011e-40 < z < -8.4999999999999997e-242 or -1.5000000000000001e-293 < z < 1e-58

    1. Initial program 97.6%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-97.6%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative97.6%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative97.6%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*97.6%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-97.6%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*97.6%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative97.6%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative97.6%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*97.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*98.7%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified98.7%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in x around inf 51.5%

      \[\leadsto \color{blue}{2 \cdot x} \]

    if -8.4999999999999997e-242 < z < -1.5000000000000001e-293

    1. Initial program 100.0%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-100.0%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative100.0%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative100.0%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*100.0%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-100.0%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*100.0%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative100.0%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative100.0%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*100.0%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*100.0%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified100.0%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in a around inf 75.1%

      \[\leadsto \color{blue}{27 \cdot \left(a \cdot b\right)} \]
    6. Step-by-step derivation
      1. associate-*r*75.8%

        \[\leadsto \color{blue}{\left(27 \cdot a\right) \cdot b} \]
    7. Simplified75.8%

      \[\leadsto \color{blue}{\left(27 \cdot a\right) \cdot b} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification47.8%

    \[\leadsto \begin{array}{l} \mathbf{if}\;z \leq -3.1 \cdot 10^{-40}:\\ \;\;\;\;-9 \cdot \left(t \cdot \left(y \cdot z\right)\right)\\ \mathbf{elif}\;z \leq -8.5 \cdot 10^{-242}:\\ \;\;\;\;2 \cdot x\\ \mathbf{elif}\;z \leq -1.5 \cdot 10^{-293}:\\ \;\;\;\;b \cdot \left(27 \cdot a\right)\\ \mathbf{elif}\;z \leq 10^{-58}:\\ \;\;\;\;2 \cdot x\\ \mathbf{else}:\\ \;\;\;\;-9 \cdot \left(t \cdot \left(y \cdot z\right)\right)\\ \end{array} \]
  5. Add Preprocessing

Alternative 5: 48.0% accurate, 0.6× speedup?

\[\begin{array}{l} [x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\ \\ \begin{array}{l} t_1 := t \cdot \left(-9 \cdot \left(y \cdot z\right)\right)\\ \mathbf{if}\;z \leq -5 \cdot 10^{-40}:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;z \leq -1.16 \cdot 10^{-241}:\\ \;\;\;\;2 \cdot x\\ \mathbf{elif}\;z \leq -1.9 \cdot 10^{-291}:\\ \;\;\;\;b \cdot \left(27 \cdot a\right)\\ \mathbf{elif}\;z \leq 3.4 \cdot 10^{-58}:\\ \;\;\;\;2 \cdot x\\ \mathbf{else}:\\ \;\;\;\;t\_1\\ \end{array} \end{array} \]
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
(FPCore (x y z t a b)
 :precision binary64
 (let* ((t_1 (* t (* -9.0 (* y z)))))
   (if (<= z -5e-40)
     t_1
     (if (<= z -1.16e-241)
       (* 2.0 x)
       (if (<= z -1.9e-291)
         (* b (* 27.0 a))
         (if (<= z 3.4e-58) (* 2.0 x) t_1))))))
assert(x < y && y < z && z < t && t < a && a < b);
double code(double x, double y, double z, double t, double a, double b) {
	double t_1 = t * (-9.0 * (y * z));
	double tmp;
	if (z <= -5e-40) {
		tmp = t_1;
	} else if (z <= -1.16e-241) {
		tmp = 2.0 * x;
	} else if (z <= -1.9e-291) {
		tmp = b * (27.0 * a);
	} else if (z <= 3.4e-58) {
		tmp = 2.0 * x;
	} else {
		tmp = t_1;
	}
	return tmp;
}
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
real(8) function code(x, y, z, t, a, b)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8) :: t_1
    real(8) :: tmp
    t_1 = t * ((-9.0d0) * (y * z))
    if (z <= (-5d-40)) then
        tmp = t_1
    else if (z <= (-1.16d-241)) then
        tmp = 2.0d0 * x
    else if (z <= (-1.9d-291)) then
        tmp = b * (27.0d0 * a)
    else if (z <= 3.4d-58) then
        tmp = 2.0d0 * x
    else
        tmp = t_1
    end if
    code = tmp
end function
assert x < y && y < z && z < t && t < a && a < b;
public static double code(double x, double y, double z, double t, double a, double b) {
	double t_1 = t * (-9.0 * (y * z));
	double tmp;
	if (z <= -5e-40) {
		tmp = t_1;
	} else if (z <= -1.16e-241) {
		tmp = 2.0 * x;
	} else if (z <= -1.9e-291) {
		tmp = b * (27.0 * a);
	} else if (z <= 3.4e-58) {
		tmp = 2.0 * x;
	} else {
		tmp = t_1;
	}
	return tmp;
}
[x, y, z, t, a, b] = sort([x, y, z, t, a, b])
def code(x, y, z, t, a, b):
	t_1 = t * (-9.0 * (y * z))
	tmp = 0
	if z <= -5e-40:
		tmp = t_1
	elif z <= -1.16e-241:
		tmp = 2.0 * x
	elif z <= -1.9e-291:
		tmp = b * (27.0 * a)
	elif z <= 3.4e-58:
		tmp = 2.0 * x
	else:
		tmp = t_1
	return tmp
x, y, z, t, a, b = sort([x, y, z, t, a, b])
function code(x, y, z, t, a, b)
	t_1 = Float64(t * Float64(-9.0 * Float64(y * z)))
	tmp = 0.0
	if (z <= -5e-40)
		tmp = t_1;
	elseif (z <= -1.16e-241)
		tmp = Float64(2.0 * x);
	elseif (z <= -1.9e-291)
		tmp = Float64(b * Float64(27.0 * a));
	elseif (z <= 3.4e-58)
		tmp = Float64(2.0 * x);
	else
		tmp = t_1;
	end
	return tmp
end
x, y, z, t, a, b = num2cell(sort([x, y, z, t, a, b])){:}
function tmp_2 = code(x, y, z, t, a, b)
	t_1 = t * (-9.0 * (y * z));
	tmp = 0.0;
	if (z <= -5e-40)
		tmp = t_1;
	elseif (z <= -1.16e-241)
		tmp = 2.0 * x;
	elseif (z <= -1.9e-291)
		tmp = b * (27.0 * a);
	elseif (z <= 3.4e-58)
		tmp = 2.0 * x;
	else
		tmp = t_1;
	end
	tmp_2 = tmp;
end
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
code[x_, y_, z_, t_, a_, b_] := Block[{t$95$1 = N[(t * N[(-9.0 * N[(y * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[z, -5e-40], t$95$1, If[LessEqual[z, -1.16e-241], N[(2.0 * x), $MachinePrecision], If[LessEqual[z, -1.9e-291], N[(b * N[(27.0 * a), $MachinePrecision]), $MachinePrecision], If[LessEqual[z, 3.4e-58], N[(2.0 * x), $MachinePrecision], t$95$1]]]]]
\begin{array}{l}
[x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\
\\
\begin{array}{l}
t_1 := t \cdot \left(-9 \cdot \left(y \cdot z\right)\right)\\
\mathbf{if}\;z \leq -5 \cdot 10^{-40}:\\
\;\;\;\;t\_1\\

\mathbf{elif}\;z \leq -1.16 \cdot 10^{-241}:\\
\;\;\;\;2 \cdot x\\

\mathbf{elif}\;z \leq -1.9 \cdot 10^{-291}:\\
\;\;\;\;b \cdot \left(27 \cdot a\right)\\

\mathbf{elif}\;z \leq 3.4 \cdot 10^{-58}:\\
\;\;\;\;2 \cdot x\\

\mathbf{else}:\\
\;\;\;\;t\_1\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if z < -4.99999999999999965e-40 or 3.39999999999999973e-58 < z

    1. Initial program 86.6%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Add Preprocessing
    3. Taylor expanded in y around 0 86.6%

      \[\leadsto \left(x \cdot 2 - \color{blue}{\left(9 \cdot \left(y \cdot z\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    4. Taylor expanded in y around inf 45.3%

      \[\leadsto \color{blue}{-9 \cdot \left(t \cdot \left(y \cdot z\right)\right)} \]
    5. Step-by-step derivation
      1. *-commutative45.3%

        \[\leadsto \color{blue}{\left(t \cdot \left(y \cdot z\right)\right) \cdot -9} \]
      2. associate-*l*45.3%

        \[\leadsto \color{blue}{t \cdot \left(\left(y \cdot z\right) \cdot -9\right)} \]
      3. associate-*l*45.3%

        \[\leadsto t \cdot \color{blue}{\left(y \cdot \left(z \cdot -9\right)\right)} \]
    6. Simplified45.3%

      \[\leadsto \color{blue}{t \cdot \left(y \cdot \left(z \cdot -9\right)\right)} \]
    7. Taylor expanded in y around 0 45.3%

      \[\leadsto t \cdot \color{blue}{\left(-9 \cdot \left(y \cdot z\right)\right)} \]

    if -4.99999999999999965e-40 < z < -1.16e-241 or -1.8999999999999999e-291 < z < 3.39999999999999973e-58

    1. Initial program 97.6%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-97.6%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative97.6%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative97.6%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*97.6%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-97.6%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*97.6%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative97.6%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative97.6%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*97.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*98.7%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified98.7%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in x around inf 51.5%

      \[\leadsto \color{blue}{2 \cdot x} \]

    if -1.16e-241 < z < -1.8999999999999999e-291

    1. Initial program 100.0%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-100.0%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative100.0%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative100.0%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*100.0%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-100.0%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*100.0%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative100.0%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative100.0%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*100.0%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*100.0%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified100.0%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in a around inf 75.1%

      \[\leadsto \color{blue}{27 \cdot \left(a \cdot b\right)} \]
    6. Step-by-step derivation
      1. associate-*r*75.8%

        \[\leadsto \color{blue}{\left(27 \cdot a\right) \cdot b} \]
    7. Simplified75.8%

      \[\leadsto \color{blue}{\left(27 \cdot a\right) \cdot b} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification47.9%

    \[\leadsto \begin{array}{l} \mathbf{if}\;z \leq -5 \cdot 10^{-40}:\\ \;\;\;\;t \cdot \left(-9 \cdot \left(y \cdot z\right)\right)\\ \mathbf{elif}\;z \leq -1.16 \cdot 10^{-241}:\\ \;\;\;\;2 \cdot x\\ \mathbf{elif}\;z \leq -1.9 \cdot 10^{-291}:\\ \;\;\;\;b \cdot \left(27 \cdot a\right)\\ \mathbf{elif}\;z \leq 3.4 \cdot 10^{-58}:\\ \;\;\;\;2 \cdot x\\ \mathbf{else}:\\ \;\;\;\;t \cdot \left(-9 \cdot \left(y \cdot z\right)\right)\\ \end{array} \]
  5. Add Preprocessing

Alternative 6: 48.0% accurate, 0.6× speedup?

\[\begin{array}{l} [x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\ \\ \begin{array}{l} t_1 := t \cdot \left(y \cdot \left(z \cdot -9\right)\right)\\ \mathbf{if}\;z \leq -2.8 \cdot 10^{-40}:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;z \leq -4.8 \cdot 10^{-242}:\\ \;\;\;\;2 \cdot x\\ \mathbf{elif}\;z \leq -1.12 \cdot 10^{-290}:\\ \;\;\;\;b \cdot \left(27 \cdot a\right)\\ \mathbf{elif}\;z \leq 1.85 \cdot 10^{-58}:\\ \;\;\;\;2 \cdot x\\ \mathbf{else}:\\ \;\;\;\;t\_1\\ \end{array} \end{array} \]
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
(FPCore (x y z t a b)
 :precision binary64
 (let* ((t_1 (* t (* y (* z -9.0)))))
   (if (<= z -2.8e-40)
     t_1
     (if (<= z -4.8e-242)
       (* 2.0 x)
       (if (<= z -1.12e-290)
         (* b (* 27.0 a))
         (if (<= z 1.85e-58) (* 2.0 x) t_1))))))
assert(x < y && y < z && z < t && t < a && a < b);
double code(double x, double y, double z, double t, double a, double b) {
	double t_1 = t * (y * (z * -9.0));
	double tmp;
	if (z <= -2.8e-40) {
		tmp = t_1;
	} else if (z <= -4.8e-242) {
		tmp = 2.0 * x;
	} else if (z <= -1.12e-290) {
		tmp = b * (27.0 * a);
	} else if (z <= 1.85e-58) {
		tmp = 2.0 * x;
	} else {
		tmp = t_1;
	}
	return tmp;
}
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
real(8) function code(x, y, z, t, a, b)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8) :: t_1
    real(8) :: tmp
    t_1 = t * (y * (z * (-9.0d0)))
    if (z <= (-2.8d-40)) then
        tmp = t_1
    else if (z <= (-4.8d-242)) then
        tmp = 2.0d0 * x
    else if (z <= (-1.12d-290)) then
        tmp = b * (27.0d0 * a)
    else if (z <= 1.85d-58) then
        tmp = 2.0d0 * x
    else
        tmp = t_1
    end if
    code = tmp
end function
assert x < y && y < z && z < t && t < a && a < b;
public static double code(double x, double y, double z, double t, double a, double b) {
	double t_1 = t * (y * (z * -9.0));
	double tmp;
	if (z <= -2.8e-40) {
		tmp = t_1;
	} else if (z <= -4.8e-242) {
		tmp = 2.0 * x;
	} else if (z <= -1.12e-290) {
		tmp = b * (27.0 * a);
	} else if (z <= 1.85e-58) {
		tmp = 2.0 * x;
	} else {
		tmp = t_1;
	}
	return tmp;
}
[x, y, z, t, a, b] = sort([x, y, z, t, a, b])
def code(x, y, z, t, a, b):
	t_1 = t * (y * (z * -9.0))
	tmp = 0
	if z <= -2.8e-40:
		tmp = t_1
	elif z <= -4.8e-242:
		tmp = 2.0 * x
	elif z <= -1.12e-290:
		tmp = b * (27.0 * a)
	elif z <= 1.85e-58:
		tmp = 2.0 * x
	else:
		tmp = t_1
	return tmp
x, y, z, t, a, b = sort([x, y, z, t, a, b])
function code(x, y, z, t, a, b)
	t_1 = Float64(t * Float64(y * Float64(z * -9.0)))
	tmp = 0.0
	if (z <= -2.8e-40)
		tmp = t_1;
	elseif (z <= -4.8e-242)
		tmp = Float64(2.0 * x);
	elseif (z <= -1.12e-290)
		tmp = Float64(b * Float64(27.0 * a));
	elseif (z <= 1.85e-58)
		tmp = Float64(2.0 * x);
	else
		tmp = t_1;
	end
	return tmp
end
x, y, z, t, a, b = num2cell(sort([x, y, z, t, a, b])){:}
function tmp_2 = code(x, y, z, t, a, b)
	t_1 = t * (y * (z * -9.0));
	tmp = 0.0;
	if (z <= -2.8e-40)
		tmp = t_1;
	elseif (z <= -4.8e-242)
		tmp = 2.0 * x;
	elseif (z <= -1.12e-290)
		tmp = b * (27.0 * a);
	elseif (z <= 1.85e-58)
		tmp = 2.0 * x;
	else
		tmp = t_1;
	end
	tmp_2 = tmp;
end
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
code[x_, y_, z_, t_, a_, b_] := Block[{t$95$1 = N[(t * N[(y * N[(z * -9.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[z, -2.8e-40], t$95$1, If[LessEqual[z, -4.8e-242], N[(2.0 * x), $MachinePrecision], If[LessEqual[z, -1.12e-290], N[(b * N[(27.0 * a), $MachinePrecision]), $MachinePrecision], If[LessEqual[z, 1.85e-58], N[(2.0 * x), $MachinePrecision], t$95$1]]]]]
\begin{array}{l}
[x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\
\\
\begin{array}{l}
t_1 := t \cdot \left(y \cdot \left(z \cdot -9\right)\right)\\
\mathbf{if}\;z \leq -2.8 \cdot 10^{-40}:\\
\;\;\;\;t\_1\\

\mathbf{elif}\;z \leq -4.8 \cdot 10^{-242}:\\
\;\;\;\;2 \cdot x\\

\mathbf{elif}\;z \leq -1.12 \cdot 10^{-290}:\\
\;\;\;\;b \cdot \left(27 \cdot a\right)\\

\mathbf{elif}\;z \leq 1.85 \cdot 10^{-58}:\\
\;\;\;\;2 \cdot x\\

\mathbf{else}:\\
\;\;\;\;t\_1\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if z < -2.8e-40 or 1.8500000000000001e-58 < z

    1. Initial program 86.6%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Add Preprocessing
    3. Taylor expanded in y around 0 86.6%

      \[\leadsto \left(x \cdot 2 - \color{blue}{\left(9 \cdot \left(y \cdot z\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    4. Taylor expanded in y around inf 45.3%

      \[\leadsto \color{blue}{-9 \cdot \left(t \cdot \left(y \cdot z\right)\right)} \]
    5. Step-by-step derivation
      1. *-commutative45.3%

        \[\leadsto \color{blue}{\left(t \cdot \left(y \cdot z\right)\right) \cdot -9} \]
      2. associate-*l*45.3%

        \[\leadsto \color{blue}{t \cdot \left(\left(y \cdot z\right) \cdot -9\right)} \]
      3. associate-*l*45.3%

        \[\leadsto t \cdot \color{blue}{\left(y \cdot \left(z \cdot -9\right)\right)} \]
    6. Simplified45.3%

      \[\leadsto \color{blue}{t \cdot \left(y \cdot \left(z \cdot -9\right)\right)} \]

    if -2.8e-40 < z < -4.8000000000000002e-242 or -1.12e-290 < z < 1.8500000000000001e-58

    1. Initial program 97.6%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-97.6%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative97.6%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative97.6%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*97.6%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-97.6%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*97.6%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative97.6%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative97.6%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*97.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*98.7%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified98.7%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in x around inf 51.5%

      \[\leadsto \color{blue}{2 \cdot x} \]

    if -4.8000000000000002e-242 < z < -1.12e-290

    1. Initial program 100.0%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-100.0%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative100.0%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative100.0%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*100.0%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-100.0%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*100.0%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative100.0%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative100.0%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*100.0%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*100.0%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified100.0%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in a around inf 75.1%

      \[\leadsto \color{blue}{27 \cdot \left(a \cdot b\right)} \]
    6. Step-by-step derivation
      1. associate-*r*75.8%

        \[\leadsto \color{blue}{\left(27 \cdot a\right) \cdot b} \]
    7. Simplified75.8%

      \[\leadsto \color{blue}{\left(27 \cdot a\right) \cdot b} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification47.8%

    \[\leadsto \begin{array}{l} \mathbf{if}\;z \leq -2.8 \cdot 10^{-40}:\\ \;\;\;\;t \cdot \left(y \cdot \left(z \cdot -9\right)\right)\\ \mathbf{elif}\;z \leq -4.8 \cdot 10^{-242}:\\ \;\;\;\;2 \cdot x\\ \mathbf{elif}\;z \leq -1.12 \cdot 10^{-290}:\\ \;\;\;\;b \cdot \left(27 \cdot a\right)\\ \mathbf{elif}\;z \leq 1.85 \cdot 10^{-58}:\\ \;\;\;\;2 \cdot x\\ \mathbf{else}:\\ \;\;\;\;t \cdot \left(y \cdot \left(z \cdot -9\right)\right)\\ \end{array} \]
  5. Add Preprocessing

Alternative 7: 49.8% accurate, 0.6× speedup?

\[\begin{array}{l} [x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\ \\ \begin{array}{l} \mathbf{if}\;z \leq -3.4 \cdot 10^{-40}:\\ \;\;\;\;y \cdot \left(\left(t \cdot z\right) \cdot -9\right)\\ \mathbf{elif}\;z \leq -1.16 \cdot 10^{-241}:\\ \;\;\;\;2 \cdot x\\ \mathbf{elif}\;z \leq -3 \cdot 10^{-291}:\\ \;\;\;\;b \cdot \left(27 \cdot a\right)\\ \mathbf{elif}\;z \leq 4.6 \cdot 10^{-58}:\\ \;\;\;\;2 \cdot x\\ \mathbf{else}:\\ \;\;\;\;t \cdot \left(y \cdot \left(z \cdot -9\right)\right)\\ \end{array} \end{array} \]
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
(FPCore (x y z t a b)
 :precision binary64
 (if (<= z -3.4e-40)
   (* y (* (* t z) -9.0))
   (if (<= z -1.16e-241)
     (* 2.0 x)
     (if (<= z -3e-291)
       (* b (* 27.0 a))
       (if (<= z 4.6e-58) (* 2.0 x) (* t (* y (* z -9.0))))))))
assert(x < y && y < z && z < t && t < a && a < b);
double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if (z <= -3.4e-40) {
		tmp = y * ((t * z) * -9.0);
	} else if (z <= -1.16e-241) {
		tmp = 2.0 * x;
	} else if (z <= -3e-291) {
		tmp = b * (27.0 * a);
	} else if (z <= 4.6e-58) {
		tmp = 2.0 * x;
	} else {
		tmp = t * (y * (z * -9.0));
	}
	return tmp;
}
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
real(8) function code(x, y, z, t, a, b)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8) :: tmp
    if (z <= (-3.4d-40)) then
        tmp = y * ((t * z) * (-9.0d0))
    else if (z <= (-1.16d-241)) then
        tmp = 2.0d0 * x
    else if (z <= (-3d-291)) then
        tmp = b * (27.0d0 * a)
    else if (z <= 4.6d-58) then
        tmp = 2.0d0 * x
    else
        tmp = t * (y * (z * (-9.0d0)))
    end if
    code = tmp
end function
assert x < y && y < z && z < t && t < a && a < b;
public static double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if (z <= -3.4e-40) {
		tmp = y * ((t * z) * -9.0);
	} else if (z <= -1.16e-241) {
		tmp = 2.0 * x;
	} else if (z <= -3e-291) {
		tmp = b * (27.0 * a);
	} else if (z <= 4.6e-58) {
		tmp = 2.0 * x;
	} else {
		tmp = t * (y * (z * -9.0));
	}
	return tmp;
}
[x, y, z, t, a, b] = sort([x, y, z, t, a, b])
def code(x, y, z, t, a, b):
	tmp = 0
	if z <= -3.4e-40:
		tmp = y * ((t * z) * -9.0)
	elif z <= -1.16e-241:
		tmp = 2.0 * x
	elif z <= -3e-291:
		tmp = b * (27.0 * a)
	elif z <= 4.6e-58:
		tmp = 2.0 * x
	else:
		tmp = t * (y * (z * -9.0))
	return tmp
x, y, z, t, a, b = sort([x, y, z, t, a, b])
function code(x, y, z, t, a, b)
	tmp = 0.0
	if (z <= -3.4e-40)
		tmp = Float64(y * Float64(Float64(t * z) * -9.0));
	elseif (z <= -1.16e-241)
		tmp = Float64(2.0 * x);
	elseif (z <= -3e-291)
		tmp = Float64(b * Float64(27.0 * a));
	elseif (z <= 4.6e-58)
		tmp = Float64(2.0 * x);
	else
		tmp = Float64(t * Float64(y * Float64(z * -9.0)));
	end
	return tmp
end
x, y, z, t, a, b = num2cell(sort([x, y, z, t, a, b])){:}
function tmp_2 = code(x, y, z, t, a, b)
	tmp = 0.0;
	if (z <= -3.4e-40)
		tmp = y * ((t * z) * -9.0);
	elseif (z <= -1.16e-241)
		tmp = 2.0 * x;
	elseif (z <= -3e-291)
		tmp = b * (27.0 * a);
	elseif (z <= 4.6e-58)
		tmp = 2.0 * x;
	else
		tmp = t * (y * (z * -9.0));
	end
	tmp_2 = tmp;
end
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
code[x_, y_, z_, t_, a_, b_] := If[LessEqual[z, -3.4e-40], N[(y * N[(N[(t * z), $MachinePrecision] * -9.0), $MachinePrecision]), $MachinePrecision], If[LessEqual[z, -1.16e-241], N[(2.0 * x), $MachinePrecision], If[LessEqual[z, -3e-291], N[(b * N[(27.0 * a), $MachinePrecision]), $MachinePrecision], If[LessEqual[z, 4.6e-58], N[(2.0 * x), $MachinePrecision], N[(t * N[(y * N[(z * -9.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]]]
\begin{array}{l}
[x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\
\\
\begin{array}{l}
\mathbf{if}\;z \leq -3.4 \cdot 10^{-40}:\\
\;\;\;\;y \cdot \left(\left(t \cdot z\right) \cdot -9\right)\\

\mathbf{elif}\;z \leq -1.16 \cdot 10^{-241}:\\
\;\;\;\;2 \cdot x\\

\mathbf{elif}\;z \leq -3 \cdot 10^{-291}:\\
\;\;\;\;b \cdot \left(27 \cdot a\right)\\

\mathbf{elif}\;z \leq 4.6 \cdot 10^{-58}:\\
\;\;\;\;2 \cdot x\\

\mathbf{else}:\\
\;\;\;\;t \cdot \left(y \cdot \left(z \cdot -9\right)\right)\\


\end{array}
\end{array}
Derivation
  1. Split input into 4 regimes
  2. if z < -3.39999999999999984e-40

    1. Initial program 84.7%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-84.7%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative84.7%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative84.7%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*84.7%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-84.7%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*84.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative84.7%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative84.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*92.1%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*92.0%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified92.0%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in y around inf 79.6%

      \[\leadsto \color{blue}{y \cdot \left(\left(2 \cdot \frac{x}{y} + 27 \cdot \frac{a \cdot b}{y}\right) - 9 \cdot \left(t \cdot z\right)\right)} \]
    6. Taylor expanded in y around inf 45.9%

      \[\leadsto y \cdot \color{blue}{\left(-9 \cdot \left(t \cdot z\right)\right)} \]

    if -3.39999999999999984e-40 < z < -1.16e-241 or -3.0000000000000001e-291 < z < 4.5999999999999998e-58

    1. Initial program 97.6%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-97.6%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative97.6%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative97.6%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*97.6%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-97.6%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*97.6%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative97.6%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative97.6%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*97.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*98.7%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified98.7%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in x around inf 51.5%

      \[\leadsto \color{blue}{2 \cdot x} \]

    if -1.16e-241 < z < -3.0000000000000001e-291

    1. Initial program 100.0%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-100.0%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative100.0%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative100.0%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*100.0%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-100.0%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*100.0%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative100.0%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative100.0%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*100.0%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*100.0%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified100.0%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in a around inf 75.1%

      \[\leadsto \color{blue}{27 \cdot \left(a \cdot b\right)} \]
    6. Step-by-step derivation
      1. associate-*r*75.8%

        \[\leadsto \color{blue}{\left(27 \cdot a\right) \cdot b} \]
    7. Simplified75.8%

      \[\leadsto \color{blue}{\left(27 \cdot a\right) \cdot b} \]

    if 4.5999999999999998e-58 < z

    1. Initial program 88.2%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Add Preprocessing
    3. Taylor expanded in y around 0 88.2%

      \[\leadsto \left(x \cdot 2 - \color{blue}{\left(9 \cdot \left(y \cdot z\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    4. Taylor expanded in y around inf 51.4%

      \[\leadsto \color{blue}{-9 \cdot \left(t \cdot \left(y \cdot z\right)\right)} \]
    5. Step-by-step derivation
      1. *-commutative51.4%

        \[\leadsto \color{blue}{\left(t \cdot \left(y \cdot z\right)\right) \cdot -9} \]
      2. associate-*l*51.4%

        \[\leadsto \color{blue}{t \cdot \left(\left(y \cdot z\right) \cdot -9\right)} \]
      3. associate-*l*51.4%

        \[\leadsto t \cdot \color{blue}{\left(y \cdot \left(z \cdot -9\right)\right)} \]
    6. Simplified51.4%

      \[\leadsto \color{blue}{t \cdot \left(y \cdot \left(z \cdot -9\right)\right)} \]
  3. Recombined 4 regimes into one program.
  4. Final simplification50.2%

    \[\leadsto \begin{array}{l} \mathbf{if}\;z \leq -3.4 \cdot 10^{-40}:\\ \;\;\;\;y \cdot \left(\left(t \cdot z\right) \cdot -9\right)\\ \mathbf{elif}\;z \leq -1.16 \cdot 10^{-241}:\\ \;\;\;\;2 \cdot x\\ \mathbf{elif}\;z \leq -3 \cdot 10^{-291}:\\ \;\;\;\;b \cdot \left(27 \cdot a\right)\\ \mathbf{elif}\;z \leq 4.6 \cdot 10^{-58}:\\ \;\;\;\;2 \cdot x\\ \mathbf{else}:\\ \;\;\;\;t \cdot \left(y \cdot \left(z \cdot -9\right)\right)\\ \end{array} \]
  5. Add Preprocessing

Alternative 8: 49.8% accurate, 0.6× speedup?

\[\begin{array}{l} [x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\ \\ \begin{array}{l} \mathbf{if}\;z \leq -2.5 \cdot 10^{-40}:\\ \;\;\;\;y \cdot \left(z \cdot \left(t \cdot -9\right)\right)\\ \mathbf{elif}\;z \leq -1 \cdot 10^{-241}:\\ \;\;\;\;2 \cdot x\\ \mathbf{elif}\;z \leq -1.75 \cdot 10^{-292}:\\ \;\;\;\;b \cdot \left(27 \cdot a\right)\\ \mathbf{elif}\;z \leq 7 \cdot 10^{-59}:\\ \;\;\;\;2 \cdot x\\ \mathbf{else}:\\ \;\;\;\;t \cdot \left(y \cdot \left(z \cdot -9\right)\right)\\ \end{array} \end{array} \]
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
(FPCore (x y z t a b)
 :precision binary64
 (if (<= z -2.5e-40)
   (* y (* z (* t -9.0)))
   (if (<= z -1e-241)
     (* 2.0 x)
     (if (<= z -1.75e-292)
       (* b (* 27.0 a))
       (if (<= z 7e-59) (* 2.0 x) (* t (* y (* z -9.0))))))))
assert(x < y && y < z && z < t && t < a && a < b);
double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if (z <= -2.5e-40) {
		tmp = y * (z * (t * -9.0));
	} else if (z <= -1e-241) {
		tmp = 2.0 * x;
	} else if (z <= -1.75e-292) {
		tmp = b * (27.0 * a);
	} else if (z <= 7e-59) {
		tmp = 2.0 * x;
	} else {
		tmp = t * (y * (z * -9.0));
	}
	return tmp;
}
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
real(8) function code(x, y, z, t, a, b)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8) :: tmp
    if (z <= (-2.5d-40)) then
        tmp = y * (z * (t * (-9.0d0)))
    else if (z <= (-1d-241)) then
        tmp = 2.0d0 * x
    else if (z <= (-1.75d-292)) then
        tmp = b * (27.0d0 * a)
    else if (z <= 7d-59) then
        tmp = 2.0d0 * x
    else
        tmp = t * (y * (z * (-9.0d0)))
    end if
    code = tmp
end function
assert x < y && y < z && z < t && t < a && a < b;
public static double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if (z <= -2.5e-40) {
		tmp = y * (z * (t * -9.0));
	} else if (z <= -1e-241) {
		tmp = 2.0 * x;
	} else if (z <= -1.75e-292) {
		tmp = b * (27.0 * a);
	} else if (z <= 7e-59) {
		tmp = 2.0 * x;
	} else {
		tmp = t * (y * (z * -9.0));
	}
	return tmp;
}
[x, y, z, t, a, b] = sort([x, y, z, t, a, b])
def code(x, y, z, t, a, b):
	tmp = 0
	if z <= -2.5e-40:
		tmp = y * (z * (t * -9.0))
	elif z <= -1e-241:
		tmp = 2.0 * x
	elif z <= -1.75e-292:
		tmp = b * (27.0 * a)
	elif z <= 7e-59:
		tmp = 2.0 * x
	else:
		tmp = t * (y * (z * -9.0))
	return tmp
x, y, z, t, a, b = sort([x, y, z, t, a, b])
function code(x, y, z, t, a, b)
	tmp = 0.0
	if (z <= -2.5e-40)
		tmp = Float64(y * Float64(z * Float64(t * -9.0)));
	elseif (z <= -1e-241)
		tmp = Float64(2.0 * x);
	elseif (z <= -1.75e-292)
		tmp = Float64(b * Float64(27.0 * a));
	elseif (z <= 7e-59)
		tmp = Float64(2.0 * x);
	else
		tmp = Float64(t * Float64(y * Float64(z * -9.0)));
	end
	return tmp
end
x, y, z, t, a, b = num2cell(sort([x, y, z, t, a, b])){:}
function tmp_2 = code(x, y, z, t, a, b)
	tmp = 0.0;
	if (z <= -2.5e-40)
		tmp = y * (z * (t * -9.0));
	elseif (z <= -1e-241)
		tmp = 2.0 * x;
	elseif (z <= -1.75e-292)
		tmp = b * (27.0 * a);
	elseif (z <= 7e-59)
		tmp = 2.0 * x;
	else
		tmp = t * (y * (z * -9.0));
	end
	tmp_2 = tmp;
end
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
code[x_, y_, z_, t_, a_, b_] := If[LessEqual[z, -2.5e-40], N[(y * N[(z * N[(t * -9.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[z, -1e-241], N[(2.0 * x), $MachinePrecision], If[LessEqual[z, -1.75e-292], N[(b * N[(27.0 * a), $MachinePrecision]), $MachinePrecision], If[LessEqual[z, 7e-59], N[(2.0 * x), $MachinePrecision], N[(t * N[(y * N[(z * -9.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]]]
\begin{array}{l}
[x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\
\\
\begin{array}{l}
\mathbf{if}\;z \leq -2.5 \cdot 10^{-40}:\\
\;\;\;\;y \cdot \left(z \cdot \left(t \cdot -9\right)\right)\\

\mathbf{elif}\;z \leq -1 \cdot 10^{-241}:\\
\;\;\;\;2 \cdot x\\

\mathbf{elif}\;z \leq -1.75 \cdot 10^{-292}:\\
\;\;\;\;b \cdot \left(27 \cdot a\right)\\

\mathbf{elif}\;z \leq 7 \cdot 10^{-59}:\\
\;\;\;\;2 \cdot x\\

\mathbf{else}:\\
\;\;\;\;t \cdot \left(y \cdot \left(z \cdot -9\right)\right)\\


\end{array}
\end{array}
Derivation
  1. Split input into 4 regimes
  2. if z < -2.49999999999999982e-40

    1. Initial program 84.7%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-84.7%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative84.7%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative84.7%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*84.7%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-84.7%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*84.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative84.7%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative84.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*92.1%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*92.0%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified92.0%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in y around inf 79.6%

      \[\leadsto \color{blue}{y \cdot \left(\left(2 \cdot \frac{x}{y} + 27 \cdot \frac{a \cdot b}{y}\right) - 9 \cdot \left(t \cdot z\right)\right)} \]
    6. Taylor expanded in y around inf 45.9%

      \[\leadsto y \cdot \color{blue}{\left(-9 \cdot \left(t \cdot z\right)\right)} \]
    7. Step-by-step derivation
      1. *-commutative45.9%

        \[\leadsto y \cdot \color{blue}{\left(\left(t \cdot z\right) \cdot -9\right)} \]
      2. *-commutative45.9%

        \[\leadsto y \cdot \left(\color{blue}{\left(z \cdot t\right)} \cdot -9\right) \]
      3. associate-*r*45.9%

        \[\leadsto y \cdot \color{blue}{\left(z \cdot \left(t \cdot -9\right)\right)} \]
      4. *-commutative45.9%

        \[\leadsto y \cdot \left(z \cdot \color{blue}{\left(-9 \cdot t\right)}\right) \]
    8. Simplified45.9%

      \[\leadsto y \cdot \color{blue}{\left(z \cdot \left(-9 \cdot t\right)\right)} \]

    if -2.49999999999999982e-40 < z < -9.9999999999999997e-242 or -1.75e-292 < z < 7.0000000000000002e-59

    1. Initial program 97.6%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-97.6%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative97.6%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative97.6%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*97.6%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-97.6%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*97.6%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative97.6%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative97.6%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*97.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*98.7%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified98.7%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in x around inf 51.5%

      \[\leadsto \color{blue}{2 \cdot x} \]

    if -9.9999999999999997e-242 < z < -1.75e-292

    1. Initial program 100.0%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-100.0%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative100.0%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative100.0%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*100.0%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-100.0%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*100.0%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative100.0%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative100.0%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*100.0%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*100.0%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified100.0%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in a around inf 75.1%

      \[\leadsto \color{blue}{27 \cdot \left(a \cdot b\right)} \]
    6. Step-by-step derivation
      1. associate-*r*75.8%

        \[\leadsto \color{blue}{\left(27 \cdot a\right) \cdot b} \]
    7. Simplified75.8%

      \[\leadsto \color{blue}{\left(27 \cdot a\right) \cdot b} \]

    if 7.0000000000000002e-59 < z

    1. Initial program 88.2%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Add Preprocessing
    3. Taylor expanded in y around 0 88.2%

      \[\leadsto \left(x \cdot 2 - \color{blue}{\left(9 \cdot \left(y \cdot z\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    4. Taylor expanded in y around inf 51.4%

      \[\leadsto \color{blue}{-9 \cdot \left(t \cdot \left(y \cdot z\right)\right)} \]
    5. Step-by-step derivation
      1. *-commutative51.4%

        \[\leadsto \color{blue}{\left(t \cdot \left(y \cdot z\right)\right) \cdot -9} \]
      2. associate-*l*51.4%

        \[\leadsto \color{blue}{t \cdot \left(\left(y \cdot z\right) \cdot -9\right)} \]
      3. associate-*l*51.4%

        \[\leadsto t \cdot \color{blue}{\left(y \cdot \left(z \cdot -9\right)\right)} \]
    6. Simplified51.4%

      \[\leadsto \color{blue}{t \cdot \left(y \cdot \left(z \cdot -9\right)\right)} \]
  3. Recombined 4 regimes into one program.
  4. Final simplification50.2%

    \[\leadsto \begin{array}{l} \mathbf{if}\;z \leq -2.5 \cdot 10^{-40}:\\ \;\;\;\;y \cdot \left(z \cdot \left(t \cdot -9\right)\right)\\ \mathbf{elif}\;z \leq -1 \cdot 10^{-241}:\\ \;\;\;\;2 \cdot x\\ \mathbf{elif}\;z \leq -1.75 \cdot 10^{-292}:\\ \;\;\;\;b \cdot \left(27 \cdot a\right)\\ \mathbf{elif}\;z \leq 7 \cdot 10^{-59}:\\ \;\;\;\;2 \cdot x\\ \mathbf{else}:\\ \;\;\;\;t \cdot \left(y \cdot \left(z \cdot -9\right)\right)\\ \end{array} \]
  5. Add Preprocessing

Alternative 9: 97.7% accurate, 0.7× speedup?

\[\begin{array}{l} [x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\ \\ \begin{array}{l} \mathbf{if}\;\left(y \cdot 9\right) \cdot z \leq 2 \cdot 10^{+285}:\\ \;\;\;\;\left(2 \cdot x - t \cdot \left(9 \cdot \left(y \cdot z\right)\right)\right) + b \cdot \left(27 \cdot a\right)\\ \mathbf{else}:\\ \;\;\;\;y \cdot \left(27 \cdot \frac{a \cdot b}{y} - 9 \cdot \left(t \cdot z\right)\right)\\ \end{array} \end{array} \]
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
(FPCore (x y z t a b)
 :precision binary64
 (if (<= (* (* y 9.0) z) 2e+285)
   (+ (- (* 2.0 x) (* t (* 9.0 (* y z)))) (* b (* 27.0 a)))
   (* y (- (* 27.0 (/ (* a b) y)) (* 9.0 (* t z))))))
assert(x < y && y < z && z < t && t < a && a < b);
double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if (((y * 9.0) * z) <= 2e+285) {
		tmp = ((2.0 * x) - (t * (9.0 * (y * z)))) + (b * (27.0 * a));
	} else {
		tmp = y * ((27.0 * ((a * b) / y)) - (9.0 * (t * z)));
	}
	return tmp;
}
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
real(8) function code(x, y, z, t, a, b)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8) :: tmp
    if (((y * 9.0d0) * z) <= 2d+285) then
        tmp = ((2.0d0 * x) - (t * (9.0d0 * (y * z)))) + (b * (27.0d0 * a))
    else
        tmp = y * ((27.0d0 * ((a * b) / y)) - (9.0d0 * (t * z)))
    end if
    code = tmp
end function
assert x < y && y < z && z < t && t < a && a < b;
public static double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if (((y * 9.0) * z) <= 2e+285) {
		tmp = ((2.0 * x) - (t * (9.0 * (y * z)))) + (b * (27.0 * a));
	} else {
		tmp = y * ((27.0 * ((a * b) / y)) - (9.0 * (t * z)));
	}
	return tmp;
}
[x, y, z, t, a, b] = sort([x, y, z, t, a, b])
def code(x, y, z, t, a, b):
	tmp = 0
	if ((y * 9.0) * z) <= 2e+285:
		tmp = ((2.0 * x) - (t * (9.0 * (y * z)))) + (b * (27.0 * a))
	else:
		tmp = y * ((27.0 * ((a * b) / y)) - (9.0 * (t * z)))
	return tmp
x, y, z, t, a, b = sort([x, y, z, t, a, b])
function code(x, y, z, t, a, b)
	tmp = 0.0
	if (Float64(Float64(y * 9.0) * z) <= 2e+285)
		tmp = Float64(Float64(Float64(2.0 * x) - Float64(t * Float64(9.0 * Float64(y * z)))) + Float64(b * Float64(27.0 * a)));
	else
		tmp = Float64(y * Float64(Float64(27.0 * Float64(Float64(a * b) / y)) - Float64(9.0 * Float64(t * z))));
	end
	return tmp
end
x, y, z, t, a, b = num2cell(sort([x, y, z, t, a, b])){:}
function tmp_2 = code(x, y, z, t, a, b)
	tmp = 0.0;
	if (((y * 9.0) * z) <= 2e+285)
		tmp = ((2.0 * x) - (t * (9.0 * (y * z)))) + (b * (27.0 * a));
	else
		tmp = y * ((27.0 * ((a * b) / y)) - (9.0 * (t * z)));
	end
	tmp_2 = tmp;
end
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
code[x_, y_, z_, t_, a_, b_] := If[LessEqual[N[(N[(y * 9.0), $MachinePrecision] * z), $MachinePrecision], 2e+285], N[(N[(N[(2.0 * x), $MachinePrecision] - N[(t * N[(9.0 * N[(y * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(b * N[(27.0 * a), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(y * N[(N[(27.0 * N[(N[(a * b), $MachinePrecision] / y), $MachinePrecision]), $MachinePrecision] - N[(9.0 * N[(t * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
[x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\
\\
\begin{array}{l}
\mathbf{if}\;\left(y \cdot 9\right) \cdot z \leq 2 \cdot 10^{+285}:\\
\;\;\;\;\left(2 \cdot x - t \cdot \left(9 \cdot \left(y \cdot z\right)\right)\right) + b \cdot \left(27 \cdot a\right)\\

\mathbf{else}:\\
\;\;\;\;y \cdot \left(27 \cdot \frac{a \cdot b}{y} - 9 \cdot \left(t \cdot z\right)\right)\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if (*.f64 (*.f64 y #s(literal 9 binary64)) z) < 2e285

    1. Initial program 94.8%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Add Preprocessing
    3. Taylor expanded in y around 0 94.8%

      \[\leadsto \left(x \cdot 2 - \color{blue}{\left(9 \cdot \left(y \cdot z\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]

    if 2e285 < (*.f64 (*.f64 y #s(literal 9 binary64)) z)

    1. Initial program 50.6%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-50.6%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative50.6%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative50.6%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*50.6%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-50.6%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*50.6%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative50.6%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative50.6%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*95.8%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*95.8%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified95.8%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in y around inf 95.7%

      \[\leadsto \color{blue}{y \cdot \left(\left(2 \cdot \frac{x}{y} + 27 \cdot \frac{a \cdot b}{y}\right) - 9 \cdot \left(t \cdot z\right)\right)} \]
    6. Taylor expanded in x around 0 92.0%

      \[\leadsto \color{blue}{y \cdot \left(27 \cdot \frac{a \cdot b}{y} - 9 \cdot \left(t \cdot z\right)\right)} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification94.5%

    \[\leadsto \begin{array}{l} \mathbf{if}\;\left(y \cdot 9\right) \cdot z \leq 2 \cdot 10^{+285}:\\ \;\;\;\;\left(2 \cdot x - t \cdot \left(9 \cdot \left(y \cdot z\right)\right)\right) + b \cdot \left(27 \cdot a\right)\\ \mathbf{else}:\\ \;\;\;\;y \cdot \left(27 \cdot \frac{a \cdot b}{y} - 9 \cdot \left(t \cdot z\right)\right)\\ \end{array} \]
  5. Add Preprocessing

Alternative 10: 81.1% accurate, 0.7× speedup?

\[\begin{array}{l} [x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\ \\ \begin{array}{l} t_1 := 27 \cdot \left(a \cdot b\right)\\ \mathbf{if}\;z \leq -2.5 \cdot 10^{-40}:\\ \;\;\;\;y \cdot \left(t \cdot \left(z \cdot -9\right)\right) + b \cdot \left(27 \cdot a\right)\\ \mathbf{elif}\;z \leq 7.6 \cdot 10^{-59}:\\ \;\;\;\;2 \cdot x + t\_1\\ \mathbf{else}:\\ \;\;\;\;t\_1 - 9 \cdot \left(t \cdot \left(y \cdot z\right)\right)\\ \end{array} \end{array} \]
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
(FPCore (x y z t a b)
 :precision binary64
 (let* ((t_1 (* 27.0 (* a b))))
   (if (<= z -2.5e-40)
     (+ (* y (* t (* z -9.0))) (* b (* 27.0 a)))
     (if (<= z 7.6e-59) (+ (* 2.0 x) t_1) (- t_1 (* 9.0 (* t (* y z))))))))
assert(x < y && y < z && z < t && t < a && a < b);
double code(double x, double y, double z, double t, double a, double b) {
	double t_1 = 27.0 * (a * b);
	double tmp;
	if (z <= -2.5e-40) {
		tmp = (y * (t * (z * -9.0))) + (b * (27.0 * a));
	} else if (z <= 7.6e-59) {
		tmp = (2.0 * x) + t_1;
	} else {
		tmp = t_1 - (9.0 * (t * (y * z)));
	}
	return tmp;
}
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
real(8) function code(x, y, z, t, a, b)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8) :: t_1
    real(8) :: tmp
    t_1 = 27.0d0 * (a * b)
    if (z <= (-2.5d-40)) then
        tmp = (y * (t * (z * (-9.0d0)))) + (b * (27.0d0 * a))
    else if (z <= 7.6d-59) then
        tmp = (2.0d0 * x) + t_1
    else
        tmp = t_1 - (9.0d0 * (t * (y * z)))
    end if
    code = tmp
end function
assert x < y && y < z && z < t && t < a && a < b;
public static double code(double x, double y, double z, double t, double a, double b) {
	double t_1 = 27.0 * (a * b);
	double tmp;
	if (z <= -2.5e-40) {
		tmp = (y * (t * (z * -9.0))) + (b * (27.0 * a));
	} else if (z <= 7.6e-59) {
		tmp = (2.0 * x) + t_1;
	} else {
		tmp = t_1 - (9.0 * (t * (y * z)));
	}
	return tmp;
}
[x, y, z, t, a, b] = sort([x, y, z, t, a, b])
def code(x, y, z, t, a, b):
	t_1 = 27.0 * (a * b)
	tmp = 0
	if z <= -2.5e-40:
		tmp = (y * (t * (z * -9.0))) + (b * (27.0 * a))
	elif z <= 7.6e-59:
		tmp = (2.0 * x) + t_1
	else:
		tmp = t_1 - (9.0 * (t * (y * z)))
	return tmp
x, y, z, t, a, b = sort([x, y, z, t, a, b])
function code(x, y, z, t, a, b)
	t_1 = Float64(27.0 * Float64(a * b))
	tmp = 0.0
	if (z <= -2.5e-40)
		tmp = Float64(Float64(y * Float64(t * Float64(z * -9.0))) + Float64(b * Float64(27.0 * a)));
	elseif (z <= 7.6e-59)
		tmp = Float64(Float64(2.0 * x) + t_1);
	else
		tmp = Float64(t_1 - Float64(9.0 * Float64(t * Float64(y * z))));
	end
	return tmp
end
x, y, z, t, a, b = num2cell(sort([x, y, z, t, a, b])){:}
function tmp_2 = code(x, y, z, t, a, b)
	t_1 = 27.0 * (a * b);
	tmp = 0.0;
	if (z <= -2.5e-40)
		tmp = (y * (t * (z * -9.0))) + (b * (27.0 * a));
	elseif (z <= 7.6e-59)
		tmp = (2.0 * x) + t_1;
	else
		tmp = t_1 - (9.0 * (t * (y * z)));
	end
	tmp_2 = tmp;
end
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
code[x_, y_, z_, t_, a_, b_] := Block[{t$95$1 = N[(27.0 * N[(a * b), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[z, -2.5e-40], N[(N[(y * N[(t * N[(z * -9.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(b * N[(27.0 * a), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[z, 7.6e-59], N[(N[(2.0 * x), $MachinePrecision] + t$95$1), $MachinePrecision], N[(t$95$1 - N[(9.0 * N[(t * N[(y * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]]
\begin{array}{l}
[x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\
\\
\begin{array}{l}
t_1 := 27 \cdot \left(a \cdot b\right)\\
\mathbf{if}\;z \leq -2.5 \cdot 10^{-40}:\\
\;\;\;\;y \cdot \left(t \cdot \left(z \cdot -9\right)\right) + b \cdot \left(27 \cdot a\right)\\

\mathbf{elif}\;z \leq 7.6 \cdot 10^{-59}:\\
\;\;\;\;2 \cdot x + t\_1\\

\mathbf{else}:\\
\;\;\;\;t\_1 - 9 \cdot \left(t \cdot \left(y \cdot z\right)\right)\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if z < -2.49999999999999982e-40

    1. Initial program 84.7%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-84.7%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative84.7%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative84.7%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*84.7%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-84.7%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*84.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative84.7%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative84.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*92.1%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*92.0%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified92.0%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in x around 0 65.6%

      \[\leadsto \color{blue}{27 \cdot \left(a \cdot b\right) - 9 \cdot \left(t \cdot \left(y \cdot z\right)\right)} \]
    6. Step-by-step derivation
      1. sub-neg65.6%

        \[\leadsto \color{blue}{27 \cdot \left(a \cdot b\right) + \left(-9 \cdot \left(t \cdot \left(y \cdot z\right)\right)\right)} \]
      2. +-commutative65.6%

        \[\leadsto \color{blue}{\left(-9 \cdot \left(t \cdot \left(y \cdot z\right)\right)\right) + 27 \cdot \left(a \cdot b\right)} \]
      3. distribute-lft-neg-in65.6%

        \[\leadsto \color{blue}{\left(-9\right) \cdot \left(t \cdot \left(y \cdot z\right)\right)} + 27 \cdot \left(a \cdot b\right) \]
      4. metadata-eval65.6%

        \[\leadsto \color{blue}{-9} \cdot \left(t \cdot \left(y \cdot z\right)\right) + 27 \cdot \left(a \cdot b\right) \]
      5. *-commutative65.6%

        \[\leadsto -9 \cdot \left(t \cdot \color{blue}{\left(z \cdot y\right)}\right) + 27 \cdot \left(a \cdot b\right) \]
      6. associate-*r*71.7%

        \[\leadsto -9 \cdot \color{blue}{\left(\left(t \cdot z\right) \cdot y\right)} + 27 \cdot \left(a \cdot b\right) \]
      7. associate-*l*71.7%

        \[\leadsto \color{blue}{\left(-9 \cdot \left(t \cdot z\right)\right) \cdot y} + 27 \cdot \left(a \cdot b\right) \]
      8. *-commutative71.7%

        \[\leadsto \color{blue}{y \cdot \left(-9 \cdot \left(t \cdot z\right)\right)} + 27 \cdot \left(a \cdot b\right) \]
      9. *-commutative71.7%

        \[\leadsto y \cdot \color{blue}{\left(\left(t \cdot z\right) \cdot -9\right)} + 27 \cdot \left(a \cdot b\right) \]
      10. associate-*l*71.7%

        \[\leadsto y \cdot \color{blue}{\left(t \cdot \left(z \cdot -9\right)\right)} + 27 \cdot \left(a \cdot b\right) \]
      11. associate-*r*71.7%

        \[\leadsto y \cdot \left(t \cdot \left(z \cdot -9\right)\right) + \color{blue}{\left(27 \cdot a\right) \cdot b} \]
      12. *-commutative71.7%

        \[\leadsto y \cdot \left(t \cdot \left(z \cdot -9\right)\right) + \color{blue}{b \cdot \left(27 \cdot a\right)} \]
    7. Applied egg-rr71.7%

      \[\leadsto \color{blue}{y \cdot \left(t \cdot \left(z \cdot -9\right)\right) + b \cdot \left(27 \cdot a\right)} \]

    if -2.49999999999999982e-40 < z < 7.59999999999999966e-59

    1. Initial program 97.7%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-97.7%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative97.7%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative97.7%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*97.7%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-97.7%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*97.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative97.7%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative97.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*97.8%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*98.8%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified98.8%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in y around 0 82.5%

      \[\leadsto \color{blue}{2 \cdot x + 27 \cdot \left(a \cdot b\right)} \]

    if 7.59999999999999966e-59 < z

    1. Initial program 88.2%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-88.2%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative88.2%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative88.2%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*88.2%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-88.2%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*88.2%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative88.2%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative88.2%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*94.4%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*94.4%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified94.4%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in x around 0 71.2%

      \[\leadsto \color{blue}{27 \cdot \left(a \cdot b\right) - 9 \cdot \left(t \cdot \left(y \cdot z\right)\right)} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification75.3%

    \[\leadsto \begin{array}{l} \mathbf{if}\;z \leq -2.5 \cdot 10^{-40}:\\ \;\;\;\;y \cdot \left(t \cdot \left(z \cdot -9\right)\right) + b \cdot \left(27 \cdot a\right)\\ \mathbf{elif}\;z \leq 7.6 \cdot 10^{-59}:\\ \;\;\;\;2 \cdot x + 27 \cdot \left(a \cdot b\right)\\ \mathbf{else}:\\ \;\;\;\;27 \cdot \left(a \cdot b\right) - 9 \cdot \left(t \cdot \left(y \cdot z\right)\right)\\ \end{array} \]
  5. Add Preprocessing

Alternative 11: 81.4% accurate, 0.7× speedup?

\[\begin{array}{l} [x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\ \\ \begin{array}{l} t_1 := 27 \cdot \left(a \cdot b\right)\\ \mathbf{if}\;z \leq -3.15 \cdot 10^{-40}:\\ \;\;\;\;y \cdot \left(27 \cdot \frac{a \cdot b}{y} - 9 \cdot \left(t \cdot z\right)\right)\\ \mathbf{elif}\;z \leq 7 \cdot 10^{-59}:\\ \;\;\;\;2 \cdot x + t\_1\\ \mathbf{else}:\\ \;\;\;\;t\_1 - 9 \cdot \left(t \cdot \left(y \cdot z\right)\right)\\ \end{array} \end{array} \]
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
(FPCore (x y z t a b)
 :precision binary64
 (let* ((t_1 (* 27.0 (* a b))))
   (if (<= z -3.15e-40)
     (* y (- (* 27.0 (/ (* a b) y)) (* 9.0 (* t z))))
     (if (<= z 7e-59) (+ (* 2.0 x) t_1) (- t_1 (* 9.0 (* t (* y z))))))))
assert(x < y && y < z && z < t && t < a && a < b);
double code(double x, double y, double z, double t, double a, double b) {
	double t_1 = 27.0 * (a * b);
	double tmp;
	if (z <= -3.15e-40) {
		tmp = y * ((27.0 * ((a * b) / y)) - (9.0 * (t * z)));
	} else if (z <= 7e-59) {
		tmp = (2.0 * x) + t_1;
	} else {
		tmp = t_1 - (9.0 * (t * (y * z)));
	}
	return tmp;
}
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
real(8) function code(x, y, z, t, a, b)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8) :: t_1
    real(8) :: tmp
    t_1 = 27.0d0 * (a * b)
    if (z <= (-3.15d-40)) then
        tmp = y * ((27.0d0 * ((a * b) / y)) - (9.0d0 * (t * z)))
    else if (z <= 7d-59) then
        tmp = (2.0d0 * x) + t_1
    else
        tmp = t_1 - (9.0d0 * (t * (y * z)))
    end if
    code = tmp
end function
assert x < y && y < z && z < t && t < a && a < b;
public static double code(double x, double y, double z, double t, double a, double b) {
	double t_1 = 27.0 * (a * b);
	double tmp;
	if (z <= -3.15e-40) {
		tmp = y * ((27.0 * ((a * b) / y)) - (9.0 * (t * z)));
	} else if (z <= 7e-59) {
		tmp = (2.0 * x) + t_1;
	} else {
		tmp = t_1 - (9.0 * (t * (y * z)));
	}
	return tmp;
}
[x, y, z, t, a, b] = sort([x, y, z, t, a, b])
def code(x, y, z, t, a, b):
	t_1 = 27.0 * (a * b)
	tmp = 0
	if z <= -3.15e-40:
		tmp = y * ((27.0 * ((a * b) / y)) - (9.0 * (t * z)))
	elif z <= 7e-59:
		tmp = (2.0 * x) + t_1
	else:
		tmp = t_1 - (9.0 * (t * (y * z)))
	return tmp
x, y, z, t, a, b = sort([x, y, z, t, a, b])
function code(x, y, z, t, a, b)
	t_1 = Float64(27.0 * Float64(a * b))
	tmp = 0.0
	if (z <= -3.15e-40)
		tmp = Float64(y * Float64(Float64(27.0 * Float64(Float64(a * b) / y)) - Float64(9.0 * Float64(t * z))));
	elseif (z <= 7e-59)
		tmp = Float64(Float64(2.0 * x) + t_1);
	else
		tmp = Float64(t_1 - Float64(9.0 * Float64(t * Float64(y * z))));
	end
	return tmp
end
x, y, z, t, a, b = num2cell(sort([x, y, z, t, a, b])){:}
function tmp_2 = code(x, y, z, t, a, b)
	t_1 = 27.0 * (a * b);
	tmp = 0.0;
	if (z <= -3.15e-40)
		tmp = y * ((27.0 * ((a * b) / y)) - (9.0 * (t * z)));
	elseif (z <= 7e-59)
		tmp = (2.0 * x) + t_1;
	else
		tmp = t_1 - (9.0 * (t * (y * z)));
	end
	tmp_2 = tmp;
end
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
code[x_, y_, z_, t_, a_, b_] := Block[{t$95$1 = N[(27.0 * N[(a * b), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[z, -3.15e-40], N[(y * N[(N[(27.0 * N[(N[(a * b), $MachinePrecision] / y), $MachinePrecision]), $MachinePrecision] - N[(9.0 * N[(t * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[z, 7e-59], N[(N[(2.0 * x), $MachinePrecision] + t$95$1), $MachinePrecision], N[(t$95$1 - N[(9.0 * N[(t * N[(y * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]]
\begin{array}{l}
[x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\
\\
\begin{array}{l}
t_1 := 27 \cdot \left(a \cdot b\right)\\
\mathbf{if}\;z \leq -3.15 \cdot 10^{-40}:\\
\;\;\;\;y \cdot \left(27 \cdot \frac{a \cdot b}{y} - 9 \cdot \left(t \cdot z\right)\right)\\

\mathbf{elif}\;z \leq 7 \cdot 10^{-59}:\\
\;\;\;\;2 \cdot x + t\_1\\

\mathbf{else}:\\
\;\;\;\;t\_1 - 9 \cdot \left(t \cdot \left(y \cdot z\right)\right)\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if z < -3.1500000000000001e-40

    1. Initial program 84.7%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-84.7%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative84.7%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative84.7%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*84.7%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-84.7%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*84.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative84.7%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative84.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*92.1%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*92.0%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified92.0%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in y around inf 79.6%

      \[\leadsto \color{blue}{y \cdot \left(\left(2 \cdot \frac{x}{y} + 27 \cdot \frac{a \cdot b}{y}\right) - 9 \cdot \left(t \cdot z\right)\right)} \]
    6. Taylor expanded in x around 0 67.0%

      \[\leadsto \color{blue}{y \cdot \left(27 \cdot \frac{a \cdot b}{y} - 9 \cdot \left(t \cdot z\right)\right)} \]

    if -3.1500000000000001e-40 < z < 7.0000000000000002e-59

    1. Initial program 97.7%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-97.7%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative97.7%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative97.7%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*97.7%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-97.7%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*97.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative97.7%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative97.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*97.8%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*98.8%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified98.8%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in y around 0 82.5%

      \[\leadsto \color{blue}{2 \cdot x + 27 \cdot \left(a \cdot b\right)} \]

    if 7.0000000000000002e-59 < z

    1. Initial program 88.2%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-88.2%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative88.2%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative88.2%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*88.2%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-88.2%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*88.2%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative88.2%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative88.2%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*94.4%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*94.4%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified94.4%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in x around 0 71.2%

      \[\leadsto \color{blue}{27 \cdot \left(a \cdot b\right) - 9 \cdot \left(t \cdot \left(y \cdot z\right)\right)} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification73.9%

    \[\leadsto \begin{array}{l} \mathbf{if}\;z \leq -3.15 \cdot 10^{-40}:\\ \;\;\;\;y \cdot \left(27 \cdot \frac{a \cdot b}{y} - 9 \cdot \left(t \cdot z\right)\right)\\ \mathbf{elif}\;z \leq 7 \cdot 10^{-59}:\\ \;\;\;\;2 \cdot x + 27 \cdot \left(a \cdot b\right)\\ \mathbf{else}:\\ \;\;\;\;27 \cdot \left(a \cdot b\right) - 9 \cdot \left(t \cdot \left(y \cdot z\right)\right)\\ \end{array} \]
  5. Add Preprocessing

Alternative 12: 96.1% accurate, 0.8× speedup?

\[\begin{array}{l} [x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\ \\ \begin{array}{l} \mathbf{if}\;z \leq 220000000000:\\ \;\;\;\;\left(2 \cdot x + y \cdot \left(z \cdot \left(t \cdot -9\right)\right)\right) + a \cdot \left(27 \cdot b\right)\\ \mathbf{else}:\\ \;\;\;\;2 \cdot x - 9 \cdot \left(t \cdot \left(y \cdot z\right)\right)\\ \end{array} \end{array} \]
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
(FPCore (x y z t a b)
 :precision binary64
 (if (<= z 220000000000.0)
   (+ (+ (* 2.0 x) (* y (* z (* t -9.0)))) (* a (* 27.0 b)))
   (- (* 2.0 x) (* 9.0 (* t (* y z))))))
assert(x < y && y < z && z < t && t < a && a < b);
double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if (z <= 220000000000.0) {
		tmp = ((2.0 * x) + (y * (z * (t * -9.0)))) + (a * (27.0 * b));
	} else {
		tmp = (2.0 * x) - (9.0 * (t * (y * z)));
	}
	return tmp;
}
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
real(8) function code(x, y, z, t, a, b)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8) :: tmp
    if (z <= 220000000000.0d0) then
        tmp = ((2.0d0 * x) + (y * (z * (t * (-9.0d0))))) + (a * (27.0d0 * b))
    else
        tmp = (2.0d0 * x) - (9.0d0 * (t * (y * z)))
    end if
    code = tmp
end function
assert x < y && y < z && z < t && t < a && a < b;
public static double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if (z <= 220000000000.0) {
		tmp = ((2.0 * x) + (y * (z * (t * -9.0)))) + (a * (27.0 * b));
	} else {
		tmp = (2.0 * x) - (9.0 * (t * (y * z)));
	}
	return tmp;
}
[x, y, z, t, a, b] = sort([x, y, z, t, a, b])
def code(x, y, z, t, a, b):
	tmp = 0
	if z <= 220000000000.0:
		tmp = ((2.0 * x) + (y * (z * (t * -9.0)))) + (a * (27.0 * b))
	else:
		tmp = (2.0 * x) - (9.0 * (t * (y * z)))
	return tmp
x, y, z, t, a, b = sort([x, y, z, t, a, b])
function code(x, y, z, t, a, b)
	tmp = 0.0
	if (z <= 220000000000.0)
		tmp = Float64(Float64(Float64(2.0 * x) + Float64(y * Float64(z * Float64(t * -9.0)))) + Float64(a * Float64(27.0 * b)));
	else
		tmp = Float64(Float64(2.0 * x) - Float64(9.0 * Float64(t * Float64(y * z))));
	end
	return tmp
end
x, y, z, t, a, b = num2cell(sort([x, y, z, t, a, b])){:}
function tmp_2 = code(x, y, z, t, a, b)
	tmp = 0.0;
	if (z <= 220000000000.0)
		tmp = ((2.0 * x) + (y * (z * (t * -9.0)))) + (a * (27.0 * b));
	else
		tmp = (2.0 * x) - (9.0 * (t * (y * z)));
	end
	tmp_2 = tmp;
end
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
code[x_, y_, z_, t_, a_, b_] := If[LessEqual[z, 220000000000.0], N[(N[(N[(2.0 * x), $MachinePrecision] + N[(y * N[(z * N[(t * -9.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(a * N[(27.0 * b), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(N[(2.0 * x), $MachinePrecision] - N[(9.0 * N[(t * N[(y * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
[x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\
\\
\begin{array}{l}
\mathbf{if}\;z \leq 220000000000:\\
\;\;\;\;\left(2 \cdot x + y \cdot \left(z \cdot \left(t \cdot -9\right)\right)\right) + a \cdot \left(27 \cdot b\right)\\

\mathbf{else}:\\
\;\;\;\;2 \cdot x - 9 \cdot \left(t \cdot \left(y \cdot z\right)\right)\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if z < 2.2e11

    1. Initial program 92.7%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-92.7%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative92.7%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative92.7%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*92.7%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-92.7%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*92.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative92.7%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative92.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*95.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*96.1%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified96.1%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Step-by-step derivation
      1. sub-neg96.1%

        \[\leadsto \color{blue}{\left(x \cdot 2 + \left(-\left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right)\right)} + a \cdot \left(27 \cdot b\right) \]
      2. *-commutative96.1%

        \[\leadsto \left(x \cdot 2 + \left(-\color{blue}{\left(z \cdot t\right) \cdot \left(y \cdot 9\right)}\right)\right) + a \cdot \left(27 \cdot b\right) \]
      3. distribute-rgt-neg-in96.1%

        \[\leadsto \left(x \cdot 2 + \color{blue}{\left(z \cdot t\right) \cdot \left(-y \cdot 9\right)}\right) + a \cdot \left(27 \cdot b\right) \]
      4. *-commutative96.1%

        \[\leadsto \left(x \cdot 2 + \left(z \cdot t\right) \cdot \left(-\color{blue}{9 \cdot y}\right)\right) + a \cdot \left(27 \cdot b\right) \]
      5. distribute-lft-neg-in96.1%

        \[\leadsto \left(x \cdot 2 + \left(z \cdot t\right) \cdot \color{blue}{\left(\left(-9\right) \cdot y\right)}\right) + a \cdot \left(27 \cdot b\right) \]
      6. metadata-eval96.1%

        \[\leadsto \left(x \cdot 2 + \left(z \cdot t\right) \cdot \left(\color{blue}{-9} \cdot y\right)\right) + a \cdot \left(27 \cdot b\right) \]
      7. associate-*l*96.1%

        \[\leadsto \left(x \cdot 2 + \color{blue}{\left(\left(z \cdot t\right) \cdot -9\right) \cdot y}\right) + a \cdot \left(27 \cdot b\right) \]
      8. associate-*r*95.6%

        \[\leadsto \left(x \cdot 2 + \color{blue}{\left(z \cdot \left(t \cdot -9\right)\right)} \cdot y\right) + a \cdot \left(27 \cdot b\right) \]
      9. *-commutative95.6%

        \[\leadsto \left(x \cdot 2 + \color{blue}{y \cdot \left(z \cdot \left(t \cdot -9\right)\right)}\right) + a \cdot \left(27 \cdot b\right) \]
    6. Applied egg-rr95.6%

      \[\leadsto \color{blue}{\left(x \cdot 2 + y \cdot \left(z \cdot \left(t \cdot -9\right)\right)\right)} + a \cdot \left(27 \cdot b\right) \]

    if 2.2e11 < z

    1. Initial program 84.5%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-84.5%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative84.5%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative84.5%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*84.5%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-84.5%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*84.5%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative84.5%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative84.5%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*92.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*92.7%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified92.7%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in a around 0 66.5%

      \[\leadsto \color{blue}{2 \cdot x - 9 \cdot \left(t \cdot \left(y \cdot z\right)\right)} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification87.8%

    \[\leadsto \begin{array}{l} \mathbf{if}\;z \leq 220000000000:\\ \;\;\;\;\left(2 \cdot x + y \cdot \left(z \cdot \left(t \cdot -9\right)\right)\right) + a \cdot \left(27 \cdot b\right)\\ \mathbf{else}:\\ \;\;\;\;2 \cdot x - 9 \cdot \left(t \cdot \left(y \cdot z\right)\right)\\ \end{array} \]
  5. Add Preprocessing

Alternative 13: 76.8% accurate, 0.8× speedup?

\[\begin{array}{l} [x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\ \\ \begin{array}{l} \mathbf{if}\;z \leq -4 \cdot 10^{-40}:\\ \;\;\;\;y \cdot \left(z \cdot \left(t \cdot -9\right)\right)\\ \mathbf{elif}\;z \leq 1.85 \cdot 10^{-72}:\\ \;\;\;\;2 \cdot x + 27 \cdot \left(a \cdot b\right)\\ \mathbf{else}:\\ \;\;\;\;2 \cdot x - 9 \cdot \left(t \cdot \left(y \cdot z\right)\right)\\ \end{array} \end{array} \]
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
(FPCore (x y z t a b)
 :precision binary64
 (if (<= z -4e-40)
   (* y (* z (* t -9.0)))
   (if (<= z 1.85e-72)
     (+ (* 2.0 x) (* 27.0 (* a b)))
     (- (* 2.0 x) (* 9.0 (* t (* y z)))))))
assert(x < y && y < z && z < t && t < a && a < b);
double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if (z <= -4e-40) {
		tmp = y * (z * (t * -9.0));
	} else if (z <= 1.85e-72) {
		tmp = (2.0 * x) + (27.0 * (a * b));
	} else {
		tmp = (2.0 * x) - (9.0 * (t * (y * z)));
	}
	return tmp;
}
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
real(8) function code(x, y, z, t, a, b)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8) :: tmp
    if (z <= (-4d-40)) then
        tmp = y * (z * (t * (-9.0d0)))
    else if (z <= 1.85d-72) then
        tmp = (2.0d0 * x) + (27.0d0 * (a * b))
    else
        tmp = (2.0d0 * x) - (9.0d0 * (t * (y * z)))
    end if
    code = tmp
end function
assert x < y && y < z && z < t && t < a && a < b;
public static double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if (z <= -4e-40) {
		tmp = y * (z * (t * -9.0));
	} else if (z <= 1.85e-72) {
		tmp = (2.0 * x) + (27.0 * (a * b));
	} else {
		tmp = (2.0 * x) - (9.0 * (t * (y * z)));
	}
	return tmp;
}
[x, y, z, t, a, b] = sort([x, y, z, t, a, b])
def code(x, y, z, t, a, b):
	tmp = 0
	if z <= -4e-40:
		tmp = y * (z * (t * -9.0))
	elif z <= 1.85e-72:
		tmp = (2.0 * x) + (27.0 * (a * b))
	else:
		tmp = (2.0 * x) - (9.0 * (t * (y * z)))
	return tmp
x, y, z, t, a, b = sort([x, y, z, t, a, b])
function code(x, y, z, t, a, b)
	tmp = 0.0
	if (z <= -4e-40)
		tmp = Float64(y * Float64(z * Float64(t * -9.0)));
	elseif (z <= 1.85e-72)
		tmp = Float64(Float64(2.0 * x) + Float64(27.0 * Float64(a * b)));
	else
		tmp = Float64(Float64(2.0 * x) - Float64(9.0 * Float64(t * Float64(y * z))));
	end
	return tmp
end
x, y, z, t, a, b = num2cell(sort([x, y, z, t, a, b])){:}
function tmp_2 = code(x, y, z, t, a, b)
	tmp = 0.0;
	if (z <= -4e-40)
		tmp = y * (z * (t * -9.0));
	elseif (z <= 1.85e-72)
		tmp = (2.0 * x) + (27.0 * (a * b));
	else
		tmp = (2.0 * x) - (9.0 * (t * (y * z)));
	end
	tmp_2 = tmp;
end
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
code[x_, y_, z_, t_, a_, b_] := If[LessEqual[z, -4e-40], N[(y * N[(z * N[(t * -9.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[z, 1.85e-72], N[(N[(2.0 * x), $MachinePrecision] + N[(27.0 * N[(a * b), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(N[(2.0 * x), $MachinePrecision] - N[(9.0 * N[(t * N[(y * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}
[x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\
\\
\begin{array}{l}
\mathbf{if}\;z \leq -4 \cdot 10^{-40}:\\
\;\;\;\;y \cdot \left(z \cdot \left(t \cdot -9\right)\right)\\

\mathbf{elif}\;z \leq 1.85 \cdot 10^{-72}:\\
\;\;\;\;2 \cdot x + 27 \cdot \left(a \cdot b\right)\\

\mathbf{else}:\\
\;\;\;\;2 \cdot x - 9 \cdot \left(t \cdot \left(y \cdot z\right)\right)\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if z < -3.9999999999999997e-40

    1. Initial program 84.7%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-84.7%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative84.7%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative84.7%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*84.7%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-84.7%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*84.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative84.7%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative84.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*92.1%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*92.0%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified92.0%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in y around inf 79.6%

      \[\leadsto \color{blue}{y \cdot \left(\left(2 \cdot \frac{x}{y} + 27 \cdot \frac{a \cdot b}{y}\right) - 9 \cdot \left(t \cdot z\right)\right)} \]
    6. Taylor expanded in y around inf 45.9%

      \[\leadsto y \cdot \color{blue}{\left(-9 \cdot \left(t \cdot z\right)\right)} \]
    7. Step-by-step derivation
      1. *-commutative45.9%

        \[\leadsto y \cdot \color{blue}{\left(\left(t \cdot z\right) \cdot -9\right)} \]
      2. *-commutative45.9%

        \[\leadsto y \cdot \left(\color{blue}{\left(z \cdot t\right)} \cdot -9\right) \]
      3. associate-*r*45.9%

        \[\leadsto y \cdot \color{blue}{\left(z \cdot \left(t \cdot -9\right)\right)} \]
      4. *-commutative45.9%

        \[\leadsto y \cdot \left(z \cdot \color{blue}{\left(-9 \cdot t\right)}\right) \]
    8. Simplified45.9%

      \[\leadsto y \cdot \color{blue}{\left(z \cdot \left(-9 \cdot t\right)\right)} \]

    if -3.9999999999999997e-40 < z < 1.8499999999999999e-72

    1. Initial program 97.7%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-97.7%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative97.7%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative97.7%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*97.7%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-97.7%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*97.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative97.7%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative97.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*97.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*98.7%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified98.7%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in y around 0 82.3%

      \[\leadsto \color{blue}{2 \cdot x + 27 \cdot \left(a \cdot b\right)} \]

    if 1.8499999999999999e-72 < z

    1. Initial program 88.3%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-88.3%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative88.3%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative88.3%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*88.3%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-88.3%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*88.3%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative88.3%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative88.3%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*94.5%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*94.5%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified94.5%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in a around 0 68.8%

      \[\leadsto \color{blue}{2 \cdot x - 9 \cdot \left(t \cdot \left(y \cdot z\right)\right)} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification66.6%

    \[\leadsto \begin{array}{l} \mathbf{if}\;z \leq -4 \cdot 10^{-40}:\\ \;\;\;\;y \cdot \left(z \cdot \left(t \cdot -9\right)\right)\\ \mathbf{elif}\;z \leq 1.85 \cdot 10^{-72}:\\ \;\;\;\;2 \cdot x + 27 \cdot \left(a \cdot b\right)\\ \mathbf{else}:\\ \;\;\;\;2 \cdot x - 9 \cdot \left(t \cdot \left(y \cdot z\right)\right)\\ \end{array} \]
  5. Add Preprocessing

Alternative 14: 79.9% accurate, 0.8× speedup?

\[\begin{array}{l} [x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\ \\ \begin{array}{l} \mathbf{if}\;z \leq -4.6 \cdot 10^{-40}:\\ \;\;\;\;y \cdot \left(2 \cdot \frac{x}{y} + z \cdot \left(t \cdot -9\right)\right)\\ \mathbf{elif}\;z \leq 1.02 \cdot 10^{-69}:\\ \;\;\;\;2 \cdot x + 27 \cdot \left(a \cdot b\right)\\ \mathbf{else}:\\ \;\;\;\;2 \cdot x - 9 \cdot \left(t \cdot \left(y \cdot z\right)\right)\\ \end{array} \end{array} \]
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
(FPCore (x y z t a b)
 :precision binary64
 (if (<= z -4.6e-40)
   (* y (+ (* 2.0 (/ x y)) (* z (* t -9.0))))
   (if (<= z 1.02e-69)
     (+ (* 2.0 x) (* 27.0 (* a b)))
     (- (* 2.0 x) (* 9.0 (* t (* y z)))))))
assert(x < y && y < z && z < t && t < a && a < b);
double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if (z <= -4.6e-40) {
		tmp = y * ((2.0 * (x / y)) + (z * (t * -9.0)));
	} else if (z <= 1.02e-69) {
		tmp = (2.0 * x) + (27.0 * (a * b));
	} else {
		tmp = (2.0 * x) - (9.0 * (t * (y * z)));
	}
	return tmp;
}
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
real(8) function code(x, y, z, t, a, b)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8) :: tmp
    if (z <= (-4.6d-40)) then
        tmp = y * ((2.0d0 * (x / y)) + (z * (t * (-9.0d0))))
    else if (z <= 1.02d-69) then
        tmp = (2.0d0 * x) + (27.0d0 * (a * b))
    else
        tmp = (2.0d0 * x) - (9.0d0 * (t * (y * z)))
    end if
    code = tmp
end function
assert x < y && y < z && z < t && t < a && a < b;
public static double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if (z <= -4.6e-40) {
		tmp = y * ((2.0 * (x / y)) + (z * (t * -9.0)));
	} else if (z <= 1.02e-69) {
		tmp = (2.0 * x) + (27.0 * (a * b));
	} else {
		tmp = (2.0 * x) - (9.0 * (t * (y * z)));
	}
	return tmp;
}
[x, y, z, t, a, b] = sort([x, y, z, t, a, b])
def code(x, y, z, t, a, b):
	tmp = 0
	if z <= -4.6e-40:
		tmp = y * ((2.0 * (x / y)) + (z * (t * -9.0)))
	elif z <= 1.02e-69:
		tmp = (2.0 * x) + (27.0 * (a * b))
	else:
		tmp = (2.0 * x) - (9.0 * (t * (y * z)))
	return tmp
x, y, z, t, a, b = sort([x, y, z, t, a, b])
function code(x, y, z, t, a, b)
	tmp = 0.0
	if (z <= -4.6e-40)
		tmp = Float64(y * Float64(Float64(2.0 * Float64(x / y)) + Float64(z * Float64(t * -9.0))));
	elseif (z <= 1.02e-69)
		tmp = Float64(Float64(2.0 * x) + Float64(27.0 * Float64(a * b)));
	else
		tmp = Float64(Float64(2.0 * x) - Float64(9.0 * Float64(t * Float64(y * z))));
	end
	return tmp
end
x, y, z, t, a, b = num2cell(sort([x, y, z, t, a, b])){:}
function tmp_2 = code(x, y, z, t, a, b)
	tmp = 0.0;
	if (z <= -4.6e-40)
		tmp = y * ((2.0 * (x / y)) + (z * (t * -9.0)));
	elseif (z <= 1.02e-69)
		tmp = (2.0 * x) + (27.0 * (a * b));
	else
		tmp = (2.0 * x) - (9.0 * (t * (y * z)));
	end
	tmp_2 = tmp;
end
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
code[x_, y_, z_, t_, a_, b_] := If[LessEqual[z, -4.6e-40], N[(y * N[(N[(2.0 * N[(x / y), $MachinePrecision]), $MachinePrecision] + N[(z * N[(t * -9.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[z, 1.02e-69], N[(N[(2.0 * x), $MachinePrecision] + N[(27.0 * N[(a * b), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(N[(2.0 * x), $MachinePrecision] - N[(9.0 * N[(t * N[(y * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}
[x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\
\\
\begin{array}{l}
\mathbf{if}\;z \leq -4.6 \cdot 10^{-40}:\\
\;\;\;\;y \cdot \left(2 \cdot \frac{x}{y} + z \cdot \left(t \cdot -9\right)\right)\\

\mathbf{elif}\;z \leq 1.02 \cdot 10^{-69}:\\
\;\;\;\;2 \cdot x + 27 \cdot \left(a \cdot b\right)\\

\mathbf{else}:\\
\;\;\;\;2 \cdot x - 9 \cdot \left(t \cdot \left(y \cdot z\right)\right)\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if z < -4.6e-40

    1. Initial program 84.7%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-84.7%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative84.7%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative84.7%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*84.7%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-84.7%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*84.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative84.7%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative84.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*92.1%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*92.0%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified92.0%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in a around 0 55.9%

      \[\leadsto \color{blue}{2 \cdot x - 9 \cdot \left(t \cdot \left(y \cdot z\right)\right)} \]
    6. Taylor expanded in y around inf 60.3%

      \[\leadsto \color{blue}{y \cdot \left(2 \cdot \frac{x}{y} - 9 \cdot \left(t \cdot z\right)\right)} \]
    7. Step-by-step derivation
      1. cancel-sign-sub-inv60.3%

        \[\leadsto y \cdot \color{blue}{\left(2 \cdot \frac{x}{y} + \left(-9\right) \cdot \left(t \cdot z\right)\right)} \]
      2. metadata-eval60.3%

        \[\leadsto y \cdot \left(2 \cdot \frac{x}{y} + \color{blue}{-9} \cdot \left(t \cdot z\right)\right) \]
      3. associate-*r*60.3%

        \[\leadsto y \cdot \left(2 \cdot \frac{x}{y} + \color{blue}{\left(-9 \cdot t\right) \cdot z}\right) \]
    8. Simplified60.3%

      \[\leadsto \color{blue}{y \cdot \left(2 \cdot \frac{x}{y} + \left(-9 \cdot t\right) \cdot z\right)} \]

    if -4.6e-40 < z < 1.02000000000000005e-69

    1. Initial program 97.7%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-97.7%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative97.7%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative97.7%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*97.7%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-97.7%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*97.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative97.7%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative97.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*97.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*98.7%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified98.7%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in y around 0 82.3%

      \[\leadsto \color{blue}{2 \cdot x + 27 \cdot \left(a \cdot b\right)} \]

    if 1.02000000000000005e-69 < z

    1. Initial program 88.3%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-88.3%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative88.3%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative88.3%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*88.3%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-88.3%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*88.3%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative88.3%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative88.3%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*94.5%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*94.5%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified94.5%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in a around 0 68.8%

      \[\leadsto \color{blue}{2 \cdot x - 9 \cdot \left(t \cdot \left(y \cdot z\right)\right)} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification70.9%

    \[\leadsto \begin{array}{l} \mathbf{if}\;z \leq -4.6 \cdot 10^{-40}:\\ \;\;\;\;y \cdot \left(2 \cdot \frac{x}{y} + z \cdot \left(t \cdot -9\right)\right)\\ \mathbf{elif}\;z \leq 1.02 \cdot 10^{-69}:\\ \;\;\;\;2 \cdot x + 27 \cdot \left(a \cdot b\right)\\ \mathbf{else}:\\ \;\;\;\;2 \cdot x - 9 \cdot \left(t \cdot \left(y \cdot z\right)\right)\\ \end{array} \]
  5. Add Preprocessing

Alternative 15: 73.6% accurate, 0.9× speedup?

\[\begin{array}{l} [x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\ \\ \begin{array}{l} \mathbf{if}\;z \leq -4.6 \cdot 10^{-40}:\\ \;\;\;\;y \cdot \left(z \cdot \left(t \cdot -9\right)\right)\\ \mathbf{elif}\;z \leq 9.5 \cdot 10^{-58}:\\ \;\;\;\;2 \cdot x + 27 \cdot \left(a \cdot b\right)\\ \mathbf{else}:\\ \;\;\;\;t \cdot \left(y \cdot \left(z \cdot -9\right)\right)\\ \end{array} \end{array} \]
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
(FPCore (x y z t a b)
 :precision binary64
 (if (<= z -4.6e-40)
   (* y (* z (* t -9.0)))
   (if (<= z 9.5e-58) (+ (* 2.0 x) (* 27.0 (* a b))) (* t (* y (* z -9.0))))))
assert(x < y && y < z && z < t && t < a && a < b);
double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if (z <= -4.6e-40) {
		tmp = y * (z * (t * -9.0));
	} else if (z <= 9.5e-58) {
		tmp = (2.0 * x) + (27.0 * (a * b));
	} else {
		tmp = t * (y * (z * -9.0));
	}
	return tmp;
}
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
real(8) function code(x, y, z, t, a, b)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8) :: tmp
    if (z <= (-4.6d-40)) then
        tmp = y * (z * (t * (-9.0d0)))
    else if (z <= 9.5d-58) then
        tmp = (2.0d0 * x) + (27.0d0 * (a * b))
    else
        tmp = t * (y * (z * (-9.0d0)))
    end if
    code = tmp
end function
assert x < y && y < z && z < t && t < a && a < b;
public static double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if (z <= -4.6e-40) {
		tmp = y * (z * (t * -9.0));
	} else if (z <= 9.5e-58) {
		tmp = (2.0 * x) + (27.0 * (a * b));
	} else {
		tmp = t * (y * (z * -9.0));
	}
	return tmp;
}
[x, y, z, t, a, b] = sort([x, y, z, t, a, b])
def code(x, y, z, t, a, b):
	tmp = 0
	if z <= -4.6e-40:
		tmp = y * (z * (t * -9.0))
	elif z <= 9.5e-58:
		tmp = (2.0 * x) + (27.0 * (a * b))
	else:
		tmp = t * (y * (z * -9.0))
	return tmp
x, y, z, t, a, b = sort([x, y, z, t, a, b])
function code(x, y, z, t, a, b)
	tmp = 0.0
	if (z <= -4.6e-40)
		tmp = Float64(y * Float64(z * Float64(t * -9.0)));
	elseif (z <= 9.5e-58)
		tmp = Float64(Float64(2.0 * x) + Float64(27.0 * Float64(a * b)));
	else
		tmp = Float64(t * Float64(y * Float64(z * -9.0)));
	end
	return tmp
end
x, y, z, t, a, b = num2cell(sort([x, y, z, t, a, b])){:}
function tmp_2 = code(x, y, z, t, a, b)
	tmp = 0.0;
	if (z <= -4.6e-40)
		tmp = y * (z * (t * -9.0));
	elseif (z <= 9.5e-58)
		tmp = (2.0 * x) + (27.0 * (a * b));
	else
		tmp = t * (y * (z * -9.0));
	end
	tmp_2 = tmp;
end
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
code[x_, y_, z_, t_, a_, b_] := If[LessEqual[z, -4.6e-40], N[(y * N[(z * N[(t * -9.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[z, 9.5e-58], N[(N[(2.0 * x), $MachinePrecision] + N[(27.0 * N[(a * b), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(t * N[(y * N[(z * -9.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}
[x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\
\\
\begin{array}{l}
\mathbf{if}\;z \leq -4.6 \cdot 10^{-40}:\\
\;\;\;\;y \cdot \left(z \cdot \left(t \cdot -9\right)\right)\\

\mathbf{elif}\;z \leq 9.5 \cdot 10^{-58}:\\
\;\;\;\;2 \cdot x + 27 \cdot \left(a \cdot b\right)\\

\mathbf{else}:\\
\;\;\;\;t \cdot \left(y \cdot \left(z \cdot -9\right)\right)\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if z < -4.6e-40

    1. Initial program 84.7%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-84.7%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative84.7%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative84.7%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*84.7%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-84.7%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*84.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative84.7%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative84.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*92.1%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*92.0%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified92.0%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in y around inf 79.6%

      \[\leadsto \color{blue}{y \cdot \left(\left(2 \cdot \frac{x}{y} + 27 \cdot \frac{a \cdot b}{y}\right) - 9 \cdot \left(t \cdot z\right)\right)} \]
    6. Taylor expanded in y around inf 45.9%

      \[\leadsto y \cdot \color{blue}{\left(-9 \cdot \left(t \cdot z\right)\right)} \]
    7. Step-by-step derivation
      1. *-commutative45.9%

        \[\leadsto y \cdot \color{blue}{\left(\left(t \cdot z\right) \cdot -9\right)} \]
      2. *-commutative45.9%

        \[\leadsto y \cdot \left(\color{blue}{\left(z \cdot t\right)} \cdot -9\right) \]
      3. associate-*r*45.9%

        \[\leadsto y \cdot \color{blue}{\left(z \cdot \left(t \cdot -9\right)\right)} \]
      4. *-commutative45.9%

        \[\leadsto y \cdot \left(z \cdot \color{blue}{\left(-9 \cdot t\right)}\right) \]
    8. Simplified45.9%

      \[\leadsto y \cdot \color{blue}{\left(z \cdot \left(-9 \cdot t\right)\right)} \]

    if -4.6e-40 < z < 9.4999999999999994e-58

    1. Initial program 97.7%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-97.7%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative97.7%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative97.7%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*97.7%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-97.7%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*97.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative97.7%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative97.7%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*97.8%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*98.8%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified98.8%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in y around 0 82.5%

      \[\leadsto \color{blue}{2 \cdot x + 27 \cdot \left(a \cdot b\right)} \]

    if 9.4999999999999994e-58 < z

    1. Initial program 88.2%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Add Preprocessing
    3. Taylor expanded in y around 0 88.2%

      \[\leadsto \left(x \cdot 2 - \color{blue}{\left(9 \cdot \left(y \cdot z\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    4. Taylor expanded in y around inf 51.4%

      \[\leadsto \color{blue}{-9 \cdot \left(t \cdot \left(y \cdot z\right)\right)} \]
    5. Step-by-step derivation
      1. *-commutative51.4%

        \[\leadsto \color{blue}{\left(t \cdot \left(y \cdot z\right)\right) \cdot -9} \]
      2. associate-*l*51.4%

        \[\leadsto \color{blue}{t \cdot \left(\left(y \cdot z\right) \cdot -9\right)} \]
      3. associate-*l*51.4%

        \[\leadsto t \cdot \color{blue}{\left(y \cdot \left(z \cdot -9\right)\right)} \]
    6. Simplified51.4%

      \[\leadsto \color{blue}{t \cdot \left(y \cdot \left(z \cdot -9\right)\right)} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification60.6%

    \[\leadsto \begin{array}{l} \mathbf{if}\;z \leq -4.6 \cdot 10^{-40}:\\ \;\;\;\;y \cdot \left(z \cdot \left(t \cdot -9\right)\right)\\ \mathbf{elif}\;z \leq 9.5 \cdot 10^{-58}:\\ \;\;\;\;2 \cdot x + 27 \cdot \left(a \cdot b\right)\\ \mathbf{else}:\\ \;\;\;\;t \cdot \left(y \cdot \left(z \cdot -9\right)\right)\\ \end{array} \]
  5. Add Preprocessing

Alternative 16: 44.4% accurate, 1.1× speedup?

\[\begin{array}{l} [x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\ \\ \begin{array}{l} \mathbf{if}\;a \leq -4 \cdot 10^{+125} \lor \neg \left(a \leq 1.5 \cdot 10^{-100}\right):\\ \;\;\;\;27 \cdot \left(a \cdot b\right)\\ \mathbf{else}:\\ \;\;\;\;2 \cdot x\\ \end{array} \end{array} \]
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
(FPCore (x y z t a b)
 :precision binary64
 (if (or (<= a -4e+125) (not (<= a 1.5e-100))) (* 27.0 (* a b)) (* 2.0 x)))
assert(x < y && y < z && z < t && t < a && a < b);
double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if ((a <= -4e+125) || !(a <= 1.5e-100)) {
		tmp = 27.0 * (a * b);
	} else {
		tmp = 2.0 * x;
	}
	return tmp;
}
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
real(8) function code(x, y, z, t, a, b)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8) :: tmp
    if ((a <= (-4d+125)) .or. (.not. (a <= 1.5d-100))) then
        tmp = 27.0d0 * (a * b)
    else
        tmp = 2.0d0 * x
    end if
    code = tmp
end function
assert x < y && y < z && z < t && t < a && a < b;
public static double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if ((a <= -4e+125) || !(a <= 1.5e-100)) {
		tmp = 27.0 * (a * b);
	} else {
		tmp = 2.0 * x;
	}
	return tmp;
}
[x, y, z, t, a, b] = sort([x, y, z, t, a, b])
def code(x, y, z, t, a, b):
	tmp = 0
	if (a <= -4e+125) or not (a <= 1.5e-100):
		tmp = 27.0 * (a * b)
	else:
		tmp = 2.0 * x
	return tmp
x, y, z, t, a, b = sort([x, y, z, t, a, b])
function code(x, y, z, t, a, b)
	tmp = 0.0
	if ((a <= -4e+125) || !(a <= 1.5e-100))
		tmp = Float64(27.0 * Float64(a * b));
	else
		tmp = Float64(2.0 * x);
	end
	return tmp
end
x, y, z, t, a, b = num2cell(sort([x, y, z, t, a, b])){:}
function tmp_2 = code(x, y, z, t, a, b)
	tmp = 0.0;
	if ((a <= -4e+125) || ~((a <= 1.5e-100)))
		tmp = 27.0 * (a * b);
	else
		tmp = 2.0 * x;
	end
	tmp_2 = tmp;
end
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
code[x_, y_, z_, t_, a_, b_] := If[Or[LessEqual[a, -4e+125], N[Not[LessEqual[a, 1.5e-100]], $MachinePrecision]], N[(27.0 * N[(a * b), $MachinePrecision]), $MachinePrecision], N[(2.0 * x), $MachinePrecision]]
\begin{array}{l}
[x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\
\\
\begin{array}{l}
\mathbf{if}\;a \leq -4 \cdot 10^{+125} \lor \neg \left(a \leq 1.5 \cdot 10^{-100}\right):\\
\;\;\;\;27 \cdot \left(a \cdot b\right)\\

\mathbf{else}:\\
\;\;\;\;2 \cdot x\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if a < -3.9999999999999997e125 or 1.5e-100 < a

    1. Initial program 85.9%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-85.9%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative85.9%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative85.9%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*85.9%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-85.9%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*85.9%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative85.9%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative85.9%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*92.2%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*93.0%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified93.0%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in a around inf 44.0%

      \[\leadsto \color{blue}{27 \cdot \left(a \cdot b\right)} \]

    if -3.9999999999999997e125 < a < 1.5e-100

    1. Initial program 94.3%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-94.3%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative94.3%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative94.3%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*94.3%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-94.3%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*94.3%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative94.3%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative94.3%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*97.1%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*97.1%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified97.1%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in x around inf 39.4%

      \[\leadsto \color{blue}{2 \cdot x} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification41.5%

    \[\leadsto \begin{array}{l} \mathbf{if}\;a \leq -4 \cdot 10^{+125} \lor \neg \left(a \leq 1.5 \cdot 10^{-100}\right):\\ \;\;\;\;27 \cdot \left(a \cdot b\right)\\ \mathbf{else}:\\ \;\;\;\;2 \cdot x\\ \end{array} \]
  5. Add Preprocessing

Alternative 17: 44.2% accurate, 1.1× speedup?

\[\begin{array}{l} [x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\ \\ \begin{array}{l} \mathbf{if}\;a \leq -1.1 \cdot 10^{+126} \lor \neg \left(a \leq 2.1 \cdot 10^{-108}\right):\\ \;\;\;\;a \cdot \left(27 \cdot b\right)\\ \mathbf{else}:\\ \;\;\;\;2 \cdot x\\ \end{array} \end{array} \]
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
(FPCore (x y z t a b)
 :precision binary64
 (if (or (<= a -1.1e+126) (not (<= a 2.1e-108))) (* a (* 27.0 b)) (* 2.0 x)))
assert(x < y && y < z && z < t && t < a && a < b);
double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if ((a <= -1.1e+126) || !(a <= 2.1e-108)) {
		tmp = a * (27.0 * b);
	} else {
		tmp = 2.0 * x;
	}
	return tmp;
}
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
real(8) function code(x, y, z, t, a, b)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8) :: tmp
    if ((a <= (-1.1d+126)) .or. (.not. (a <= 2.1d-108))) then
        tmp = a * (27.0d0 * b)
    else
        tmp = 2.0d0 * x
    end if
    code = tmp
end function
assert x < y && y < z && z < t && t < a && a < b;
public static double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if ((a <= -1.1e+126) || !(a <= 2.1e-108)) {
		tmp = a * (27.0 * b);
	} else {
		tmp = 2.0 * x;
	}
	return tmp;
}
[x, y, z, t, a, b] = sort([x, y, z, t, a, b])
def code(x, y, z, t, a, b):
	tmp = 0
	if (a <= -1.1e+126) or not (a <= 2.1e-108):
		tmp = a * (27.0 * b)
	else:
		tmp = 2.0 * x
	return tmp
x, y, z, t, a, b = sort([x, y, z, t, a, b])
function code(x, y, z, t, a, b)
	tmp = 0.0
	if ((a <= -1.1e+126) || !(a <= 2.1e-108))
		tmp = Float64(a * Float64(27.0 * b));
	else
		tmp = Float64(2.0 * x);
	end
	return tmp
end
x, y, z, t, a, b = num2cell(sort([x, y, z, t, a, b])){:}
function tmp_2 = code(x, y, z, t, a, b)
	tmp = 0.0;
	if ((a <= -1.1e+126) || ~((a <= 2.1e-108)))
		tmp = a * (27.0 * b);
	else
		tmp = 2.0 * x;
	end
	tmp_2 = tmp;
end
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
code[x_, y_, z_, t_, a_, b_] := If[Or[LessEqual[a, -1.1e+126], N[Not[LessEqual[a, 2.1e-108]], $MachinePrecision]], N[(a * N[(27.0 * b), $MachinePrecision]), $MachinePrecision], N[(2.0 * x), $MachinePrecision]]
\begin{array}{l}
[x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\
\\
\begin{array}{l}
\mathbf{if}\;a \leq -1.1 \cdot 10^{+126} \lor \neg \left(a \leq 2.1 \cdot 10^{-108}\right):\\
\;\;\;\;a \cdot \left(27 \cdot b\right)\\

\mathbf{else}:\\
\;\;\;\;2 \cdot x\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if a < -1.09999999999999999e126 or 2.0999999999999999e-108 < a

    1. Initial program 86.0%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-86.0%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative86.0%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative86.0%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*86.0%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-86.0%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*86.0%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative86.0%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative86.0%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*92.3%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*93.0%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified93.0%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in a around inf 44.4%

      \[\leadsto \color{blue}{27 \cdot \left(a \cdot b\right)} \]
    6. Step-by-step derivation
      1. associate-*r*44.5%

        \[\leadsto \color{blue}{\left(27 \cdot a\right) \cdot b} \]
      2. *-commutative44.5%

        \[\leadsto \color{blue}{\left(a \cdot 27\right)} \cdot b \]
      3. associate-*r*44.4%

        \[\leadsto \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    7. Simplified44.4%

      \[\leadsto \color{blue}{a \cdot \left(27 \cdot b\right)} \]

    if -1.09999999999999999e126 < a < 2.0999999999999999e-108

    1. Initial program 94.3%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-94.3%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative94.3%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative94.3%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*94.3%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-94.3%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*94.3%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative94.3%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative94.3%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*97.1%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*97.1%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified97.1%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in x around inf 39.7%

      \[\leadsto \color{blue}{2 \cdot x} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification41.9%

    \[\leadsto \begin{array}{l} \mathbf{if}\;a \leq -1.1 \cdot 10^{+126} \lor \neg \left(a \leq 2.1 \cdot 10^{-108}\right):\\ \;\;\;\;a \cdot \left(27 \cdot b\right)\\ \mathbf{else}:\\ \;\;\;\;2 \cdot x\\ \end{array} \]
  5. Add Preprocessing

Alternative 18: 44.2% accurate, 1.1× speedup?

\[\begin{array}{l} [x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\ \\ \begin{array}{l} \mathbf{if}\;a \leq -1.8 \cdot 10^{+125}:\\ \;\;\;\;b \cdot \left(27 \cdot a\right)\\ \mathbf{elif}\;a \leq 3.5 \cdot 10^{-108}:\\ \;\;\;\;2 \cdot x\\ \mathbf{else}:\\ \;\;\;\;a \cdot \left(27 \cdot b\right)\\ \end{array} \end{array} \]
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
(FPCore (x y z t a b)
 :precision binary64
 (if (<= a -1.8e+125)
   (* b (* 27.0 a))
   (if (<= a 3.5e-108) (* 2.0 x) (* a (* 27.0 b)))))
assert(x < y && y < z && z < t && t < a && a < b);
double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if (a <= -1.8e+125) {
		tmp = b * (27.0 * a);
	} else if (a <= 3.5e-108) {
		tmp = 2.0 * x;
	} else {
		tmp = a * (27.0 * b);
	}
	return tmp;
}
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
real(8) function code(x, y, z, t, a, b)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8) :: tmp
    if (a <= (-1.8d+125)) then
        tmp = b * (27.0d0 * a)
    else if (a <= 3.5d-108) then
        tmp = 2.0d0 * x
    else
        tmp = a * (27.0d0 * b)
    end if
    code = tmp
end function
assert x < y && y < z && z < t && t < a && a < b;
public static double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if (a <= -1.8e+125) {
		tmp = b * (27.0 * a);
	} else if (a <= 3.5e-108) {
		tmp = 2.0 * x;
	} else {
		tmp = a * (27.0 * b);
	}
	return tmp;
}
[x, y, z, t, a, b] = sort([x, y, z, t, a, b])
def code(x, y, z, t, a, b):
	tmp = 0
	if a <= -1.8e+125:
		tmp = b * (27.0 * a)
	elif a <= 3.5e-108:
		tmp = 2.0 * x
	else:
		tmp = a * (27.0 * b)
	return tmp
x, y, z, t, a, b = sort([x, y, z, t, a, b])
function code(x, y, z, t, a, b)
	tmp = 0.0
	if (a <= -1.8e+125)
		tmp = Float64(b * Float64(27.0 * a));
	elseif (a <= 3.5e-108)
		tmp = Float64(2.0 * x);
	else
		tmp = Float64(a * Float64(27.0 * b));
	end
	return tmp
end
x, y, z, t, a, b = num2cell(sort([x, y, z, t, a, b])){:}
function tmp_2 = code(x, y, z, t, a, b)
	tmp = 0.0;
	if (a <= -1.8e+125)
		tmp = b * (27.0 * a);
	elseif (a <= 3.5e-108)
		tmp = 2.0 * x;
	else
		tmp = a * (27.0 * b);
	end
	tmp_2 = tmp;
end
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
code[x_, y_, z_, t_, a_, b_] := If[LessEqual[a, -1.8e+125], N[(b * N[(27.0 * a), $MachinePrecision]), $MachinePrecision], If[LessEqual[a, 3.5e-108], N[(2.0 * x), $MachinePrecision], N[(a * N[(27.0 * b), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}
[x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\
\\
\begin{array}{l}
\mathbf{if}\;a \leq -1.8 \cdot 10^{+125}:\\
\;\;\;\;b \cdot \left(27 \cdot a\right)\\

\mathbf{elif}\;a \leq 3.5 \cdot 10^{-108}:\\
\;\;\;\;2 \cdot x\\

\mathbf{else}:\\
\;\;\;\;a \cdot \left(27 \cdot b\right)\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if a < -1.8000000000000002e125

    1. Initial program 81.3%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-81.3%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative81.3%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative81.3%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*81.2%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-81.2%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*81.3%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative81.3%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative81.3%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*88.8%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*88.7%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified88.7%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in a around inf 56.7%

      \[\leadsto \color{blue}{27 \cdot \left(a \cdot b\right)} \]
    6. Step-by-step derivation
      1. associate-*r*56.7%

        \[\leadsto \color{blue}{\left(27 \cdot a\right) \cdot b} \]
    7. Simplified56.7%

      \[\leadsto \color{blue}{\left(27 \cdot a\right) \cdot b} \]

    if -1.8000000000000002e125 < a < 3.4999999999999999e-108

    1. Initial program 94.3%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-94.3%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative94.3%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative94.3%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*94.3%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-94.3%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*94.3%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative94.3%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative94.3%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*97.1%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*97.1%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified97.1%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in x around inf 39.7%

      \[\leadsto \color{blue}{2 \cdot x} \]

    if 3.4999999999999999e-108 < a

    1. Initial program 88.1%

      \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    2. Step-by-step derivation
      1. associate-+l-88.1%

        \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
      2. *-commutative88.1%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      3. *-commutative88.1%

        \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      4. associate-*l*88.2%

        \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
      5. associate-+l-88.2%

        \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
      6. associate-*l*88.1%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      7. *-commutative88.1%

        \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      8. *-commutative88.1%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
      9. associate-*l*93.8%

        \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
      10. associate-*l*94.9%

        \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    3. Simplified94.9%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in a around inf 39.0%

      \[\leadsto \color{blue}{27 \cdot \left(a \cdot b\right)} \]
    6. Step-by-step derivation
      1. associate-*r*39.1%

        \[\leadsto \color{blue}{\left(27 \cdot a\right) \cdot b} \]
      2. *-commutative39.1%

        \[\leadsto \color{blue}{\left(a \cdot 27\right)} \cdot b \]
      3. associate-*r*39.1%

        \[\leadsto \color{blue}{a \cdot \left(27 \cdot b\right)} \]
    7. Simplified39.1%

      \[\leadsto \color{blue}{a \cdot \left(27 \cdot b\right)} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification41.9%

    \[\leadsto \begin{array}{l} \mathbf{if}\;a \leq -1.8 \cdot 10^{+125}:\\ \;\;\;\;b \cdot \left(27 \cdot a\right)\\ \mathbf{elif}\;a \leq 3.5 \cdot 10^{-108}:\\ \;\;\;\;2 \cdot x\\ \mathbf{else}:\\ \;\;\;\;a \cdot \left(27 \cdot b\right)\\ \end{array} \]
  5. Add Preprocessing

Alternative 19: 30.3% accurate, 5.7× speedup?

\[\begin{array}{l} [x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\ \\ 2 \cdot x \end{array} \]
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
(FPCore (x y z t a b) :precision binary64 (* 2.0 x))
assert(x < y && y < z && z < t && t < a && a < b);
double code(double x, double y, double z, double t, double a, double b) {
	return 2.0 * x;
}
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
real(8) function code(x, y, z, t, a, b)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    code = 2.0d0 * x
end function
assert x < y && y < z && z < t && t < a && a < b;
public static double code(double x, double y, double z, double t, double a, double b) {
	return 2.0 * x;
}
[x, y, z, t, a, b] = sort([x, y, z, t, a, b])
def code(x, y, z, t, a, b):
	return 2.0 * x
x, y, z, t, a, b = sort([x, y, z, t, a, b])
function code(x, y, z, t, a, b)
	return Float64(2.0 * x)
end
x, y, z, t, a, b = num2cell(sort([x, y, z, t, a, b])){:}
function tmp = code(x, y, z, t, a, b)
	tmp = 2.0 * x;
end
NOTE: x, y, z, t, a, and b should be sorted in increasing order before calling this function.
code[x_, y_, z_, t_, a_, b_] := N[(2.0 * x), $MachinePrecision]
\begin{array}{l}
[x, y, z, t, a, b] = \mathsf{sort}([x, y, z, t, a, b])\\
\\
2 \cdot x
\end{array}
Derivation
  1. Initial program 90.5%

    \[\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
  2. Step-by-step derivation
    1. associate-+l-90.5%

      \[\leadsto \color{blue}{x \cdot 2 - \left(\left(\left(y \cdot 9\right) \cdot z\right) \cdot t - \left(a \cdot 27\right) \cdot b\right)} \]
    2. *-commutative90.5%

      \[\leadsto x \cdot 2 - \left(\color{blue}{\left(z \cdot \left(y \cdot 9\right)\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
    3. *-commutative90.5%

      \[\leadsto x \cdot 2 - \left(\left(z \cdot \color{blue}{\left(9 \cdot y\right)}\right) \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
    4. associate-*l*90.5%

      \[\leadsto x \cdot 2 - \left(\color{blue}{\left(\left(z \cdot 9\right) \cdot y\right)} \cdot t - \left(a \cdot 27\right) \cdot b\right) \]
    5. associate-+l-90.5%

      \[\leadsto \color{blue}{\left(x \cdot 2 - \left(\left(z \cdot 9\right) \cdot y\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b} \]
    6. associate-*l*90.5%

      \[\leadsto \left(x \cdot 2 - \color{blue}{\left(z \cdot \left(9 \cdot y\right)\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    7. *-commutative90.5%

      \[\leadsto \left(x \cdot 2 - \left(z \cdot \color{blue}{\left(y \cdot 9\right)}\right) \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    8. *-commutative90.5%

      \[\leadsto \left(x \cdot 2 - \color{blue}{\left(\left(y \cdot 9\right) \cdot z\right)} \cdot t\right) + \left(a \cdot 27\right) \cdot b \]
    9. associate-*l*94.9%

      \[\leadsto \left(x \cdot 2 - \color{blue}{\left(y \cdot 9\right) \cdot \left(z \cdot t\right)}\right) + \left(a \cdot 27\right) \cdot b \]
    10. associate-*l*95.2%

      \[\leadsto \left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + \color{blue}{a \cdot \left(27 \cdot b\right)} \]
  3. Simplified95.2%

    \[\leadsto \color{blue}{\left(x \cdot 2 - \left(y \cdot 9\right) \cdot \left(z \cdot t\right)\right) + a \cdot \left(27 \cdot b\right)} \]
  4. Add Preprocessing
  5. Taylor expanded in x around inf 31.3%

    \[\leadsto \color{blue}{2 \cdot x} \]
  6. Final simplification31.3%

    \[\leadsto 2 \cdot x \]
  7. Add Preprocessing

Developer target: 94.7% accurate, 0.8× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;y < 7.590524218811189 \cdot 10^{-161}:\\ \;\;\;\;\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + a \cdot \left(27 \cdot b\right)\\ \mathbf{else}:\\ \;\;\;\;\left(x \cdot 2 - 9 \cdot \left(y \cdot \left(t \cdot z\right)\right)\right) + \left(a \cdot 27\right) \cdot b\\ \end{array} \end{array} \]
(FPCore (x y z t a b)
 :precision binary64
 (if (< y 7.590524218811189e-161)
   (+ (- (* x 2.0) (* (* (* y 9.0) z) t)) (* a (* 27.0 b)))
   (+ (- (* x 2.0) (* 9.0 (* y (* t z)))) (* (* a 27.0) b))))
double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if (y < 7.590524218811189e-161) {
		tmp = ((x * 2.0) - (((y * 9.0) * z) * t)) + (a * (27.0 * b));
	} else {
		tmp = ((x * 2.0) - (9.0 * (y * (t * z)))) + ((a * 27.0) * b);
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8) :: tmp
    if (y < 7.590524218811189d-161) then
        tmp = ((x * 2.0d0) - (((y * 9.0d0) * z) * t)) + (a * (27.0d0 * b))
    else
        tmp = ((x * 2.0d0) - (9.0d0 * (y * (t * z)))) + ((a * 27.0d0) * b)
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if (y < 7.590524218811189e-161) {
		tmp = ((x * 2.0) - (((y * 9.0) * z) * t)) + (a * (27.0 * b));
	} else {
		tmp = ((x * 2.0) - (9.0 * (y * (t * z)))) + ((a * 27.0) * b);
	}
	return tmp;
}
def code(x, y, z, t, a, b):
	tmp = 0
	if y < 7.590524218811189e-161:
		tmp = ((x * 2.0) - (((y * 9.0) * z) * t)) + (a * (27.0 * b))
	else:
		tmp = ((x * 2.0) - (9.0 * (y * (t * z)))) + ((a * 27.0) * b)
	return tmp
function code(x, y, z, t, a, b)
	tmp = 0.0
	if (y < 7.590524218811189e-161)
		tmp = Float64(Float64(Float64(x * 2.0) - Float64(Float64(Float64(y * 9.0) * z) * t)) + Float64(a * Float64(27.0 * b)));
	else
		tmp = Float64(Float64(Float64(x * 2.0) - Float64(9.0 * Float64(y * Float64(t * z)))) + Float64(Float64(a * 27.0) * b));
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b)
	tmp = 0.0;
	if (y < 7.590524218811189e-161)
		tmp = ((x * 2.0) - (((y * 9.0) * z) * t)) + (a * (27.0 * b));
	else
		tmp = ((x * 2.0) - (9.0 * (y * (t * z)))) + ((a * 27.0) * b);
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_] := If[Less[y, 7.590524218811189e-161], N[(N[(N[(x * 2.0), $MachinePrecision] - N[(N[(N[(y * 9.0), $MachinePrecision] * z), $MachinePrecision] * t), $MachinePrecision]), $MachinePrecision] + N[(a * N[(27.0 * b), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(N[(N[(x * 2.0), $MachinePrecision] - N[(9.0 * N[(y * N[(t * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(N[(a * 27.0), $MachinePrecision] * b), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;y < 7.590524218811189 \cdot 10^{-161}:\\
\;\;\;\;\left(x \cdot 2 - \left(\left(y \cdot 9\right) \cdot z\right) \cdot t\right) + a \cdot \left(27 \cdot b\right)\\

\mathbf{else}:\\
\;\;\;\;\left(x \cdot 2 - 9 \cdot \left(y \cdot \left(t \cdot z\right)\right)\right) + \left(a \cdot 27\right) \cdot b\\


\end{array}
\end{array}

Reproduce

?
herbie shell --seed 2024115 
(FPCore (x y z t a b)
  :name "Diagrams.Solve.Polynomial:cubForm  from diagrams-solve-0.1, A"
  :precision binary64

  :alt
  (if (< y 7.590524218811189e-161) (+ (- (* x 2.0) (* (* (* y 9.0) z) t)) (* a (* 27.0 b))) (+ (- (* x 2.0) (* 9.0 (* y (* t z)))) (* (* a 27.0) b)))

  (+ (- (* x 2.0) (* (* (* y 9.0) z) t)) (* (* a 27.0) b)))