Diagrams.Solve.Polynomial:quartForm from diagrams-solve-0.1, C

Percentage Accurate: 97.6% → 98.9%
Time: 8.6s
Alternatives: 11
Speedup: 1.0×

Specification

?
\[\begin{array}{l} \\ \left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (+ (- (+ (* x y) (/ (* z t) 16.0)) (/ (* a b) 4.0)) c))
double code(double x, double y, double z, double t, double a, double b, double c) {
	return (((x * y) + ((z * t) / 16.0)) - ((a * b) / 4.0)) + c;
}
real(8) function code(x, y, z, t, a, b, c)
    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), intent (in) :: c
    code = (((x * y) + ((z * t) / 16.0d0)) - ((a * b) / 4.0d0)) + c
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	return (((x * y) + ((z * t) / 16.0)) - ((a * b) / 4.0)) + c;
}
def code(x, y, z, t, a, b, c):
	return (((x * y) + ((z * t) / 16.0)) - ((a * b) / 4.0)) + c
function code(x, y, z, t, a, b, c)
	return Float64(Float64(Float64(Float64(x * y) + Float64(Float64(z * t) / 16.0)) - Float64(Float64(a * b) / 4.0)) + c)
end
function tmp = code(x, y, z, t, a, b, c)
	tmp = (((x * y) + ((z * t) / 16.0)) - ((a * b) / 4.0)) + c;
end
code[x_, y_, z_, t_, a_, b_, c_] := N[(N[(N[(N[(x * y), $MachinePrecision] + N[(N[(z * t), $MachinePrecision] / 16.0), $MachinePrecision]), $MachinePrecision] - N[(N[(a * b), $MachinePrecision] / 4.0), $MachinePrecision]), $MachinePrecision] + c), $MachinePrecision]
\begin{array}{l}

\\
\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c
\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 11 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: 97.6% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (+ (- (+ (* x y) (/ (* z t) 16.0)) (/ (* a b) 4.0)) c))
double code(double x, double y, double z, double t, double a, double b, double c) {
	return (((x * y) + ((z * t) / 16.0)) - ((a * b) / 4.0)) + c;
}
real(8) function code(x, y, z, t, a, b, c)
    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), intent (in) :: c
    code = (((x * y) + ((z * t) / 16.0d0)) - ((a * b) / 4.0d0)) + c
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	return (((x * y) + ((z * t) / 16.0)) - ((a * b) / 4.0)) + c;
}
def code(x, y, z, t, a, b, c):
	return (((x * y) + ((z * t) / 16.0)) - ((a * b) / 4.0)) + c
function code(x, y, z, t, a, b, c)
	return Float64(Float64(Float64(Float64(x * y) + Float64(Float64(z * t) / 16.0)) - Float64(Float64(a * b) / 4.0)) + c)
end
function tmp = code(x, y, z, t, a, b, c)
	tmp = (((x * y) + ((z * t) / 16.0)) - ((a * b) / 4.0)) + c;
end
code[x_, y_, z_, t_, a_, b_, c_] := N[(N[(N[(N[(x * y), $MachinePrecision] + N[(N[(z * t), $MachinePrecision] / 16.0), $MachinePrecision]), $MachinePrecision] - N[(N[(a * b), $MachinePrecision] / 4.0), $MachinePrecision]), $MachinePrecision] + c), $MachinePrecision]
\begin{array}{l}

\\
\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c
\end{array}

Alternative 1: 98.9% accurate, 0.1× speedup?

\[\begin{array}{l} \\ \mathsf{fma}\left(x, y, \mathsf{fma}\left(\frac{z}{16}, t, \mathsf{fma}\left(\frac{a}{-4}, b, c\right)\right)\right) \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (fma x y (fma (/ z 16.0) t (fma (/ a -4.0) b c))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	return fma(x, y, fma((z / 16.0), t, fma((a / -4.0), b, c)));
}
function code(x, y, z, t, a, b, c)
	return fma(x, y, fma(Float64(z / 16.0), t, fma(Float64(a / -4.0), b, c)))
end
code[x_, y_, z_, t_, a_, b_, c_] := N[(x * y + N[(N[(z / 16.0), $MachinePrecision] * t + N[(N[(a / -4.0), $MachinePrecision] * b + c), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
\mathsf{fma}\left(x, y, \mathsf{fma}\left(\frac{z}{16}, t, \mathsf{fma}\left(\frac{a}{-4}, b, c\right)\right)\right)
\end{array}
Derivation
  1. Initial program 98.0%

    \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
  2. Step-by-step derivation
    1. associate-+l-98.0%

      \[\leadsto \color{blue}{\left(x \cdot y + \frac{z \cdot t}{16}\right) - \left(\frac{a \cdot b}{4} - c\right)} \]
    2. associate--l+98.0%

      \[\leadsto \color{blue}{x \cdot y + \left(\frac{z \cdot t}{16} - \left(\frac{a \cdot b}{4} - c\right)\right)} \]
    3. fma-def98.4%

      \[\leadsto \color{blue}{\mathsf{fma}\left(x, y, \frac{z \cdot t}{16} - \left(\frac{a \cdot b}{4} - c\right)\right)} \]
    4. associate-*l/98.4%

      \[\leadsto \mathsf{fma}\left(x, y, \color{blue}{\frac{z}{16} \cdot t} - \left(\frac{a \cdot b}{4} - c\right)\right) \]
    5. fma-neg98.8%

      \[\leadsto \mathsf{fma}\left(x, y, \color{blue}{\mathsf{fma}\left(\frac{z}{16}, t, -\left(\frac{a \cdot b}{4} - c\right)\right)}\right) \]
    6. sub-neg98.8%

      \[\leadsto \mathsf{fma}\left(x, y, \mathsf{fma}\left(\frac{z}{16}, t, -\color{blue}{\left(\frac{a \cdot b}{4} + \left(-c\right)\right)}\right)\right) \]
    7. distribute-neg-in98.8%

      \[\leadsto \mathsf{fma}\left(x, y, \mathsf{fma}\left(\frac{z}{16}, t, \color{blue}{\left(-\frac{a \cdot b}{4}\right) + \left(-\left(-c\right)\right)}\right)\right) \]
    8. remove-double-neg98.8%

      \[\leadsto \mathsf{fma}\left(x, y, \mathsf{fma}\left(\frac{z}{16}, t, \left(-\frac{a \cdot b}{4}\right) + \color{blue}{c}\right)\right) \]
    9. associate-/l*98.7%

      \[\leadsto \mathsf{fma}\left(x, y, \mathsf{fma}\left(\frac{z}{16}, t, \left(-\color{blue}{\frac{a}{\frac{4}{b}}}\right) + c\right)\right) \]
    10. distribute-frac-neg98.7%

      \[\leadsto \mathsf{fma}\left(x, y, \mathsf{fma}\left(\frac{z}{16}, t, \color{blue}{\frac{-a}{\frac{4}{b}}} + c\right)\right) \]
    11. associate-/r/98.8%

      \[\leadsto \mathsf{fma}\left(x, y, \mathsf{fma}\left(\frac{z}{16}, t, \color{blue}{\frac{-a}{4} \cdot b} + c\right)\right) \]
    12. fma-def98.8%

      \[\leadsto \mathsf{fma}\left(x, y, \mathsf{fma}\left(\frac{z}{16}, t, \color{blue}{\mathsf{fma}\left(\frac{-a}{4}, b, c\right)}\right)\right) \]
    13. neg-mul-198.8%

      \[\leadsto \mathsf{fma}\left(x, y, \mathsf{fma}\left(\frac{z}{16}, t, \mathsf{fma}\left(\frac{\color{blue}{-1 \cdot a}}{4}, b, c\right)\right)\right) \]
    14. *-commutative98.8%

      \[\leadsto \mathsf{fma}\left(x, y, \mathsf{fma}\left(\frac{z}{16}, t, \mathsf{fma}\left(\frac{\color{blue}{a \cdot -1}}{4}, b, c\right)\right)\right) \]
    15. associate-/l*98.8%

      \[\leadsto \mathsf{fma}\left(x, y, \mathsf{fma}\left(\frac{z}{16}, t, \mathsf{fma}\left(\color{blue}{\frac{a}{\frac{4}{-1}}}, b, c\right)\right)\right) \]
    16. metadata-eval98.8%

      \[\leadsto \mathsf{fma}\left(x, y, \mathsf{fma}\left(\frac{z}{16}, t, \mathsf{fma}\left(\frac{a}{\color{blue}{-4}}, b, c\right)\right)\right) \]
  3. Simplified98.8%

    \[\leadsto \color{blue}{\mathsf{fma}\left(x, y, \mathsf{fma}\left(\frac{z}{16}, t, \mathsf{fma}\left(\frac{a}{-4}, b, c\right)\right)\right)} \]
  4. Add Preprocessing
  5. Final simplification98.8%

    \[\leadsto \mathsf{fma}\left(x, y, \mathsf{fma}\left(\frac{z}{16}, t, \mathsf{fma}\left(\frac{a}{-4}, b, c\right)\right)\right) \]
  6. Add Preprocessing

Alternative 2: 98.0% accurate, 0.1× speedup?

\[\begin{array}{l} \\ c + \left(\mathsf{fma}\left(z \cdot 0.0625, t, x \cdot y\right) - \frac{a \cdot b}{4}\right) \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (+ c (- (fma (* z 0.0625) t (* x y)) (/ (* a b) 4.0))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	return c + (fma((z * 0.0625), t, (x * y)) - ((a * b) / 4.0));
}
function code(x, y, z, t, a, b, c)
	return Float64(c + Float64(fma(Float64(z * 0.0625), t, Float64(x * y)) - Float64(Float64(a * b) / 4.0)))
end
code[x_, y_, z_, t_, a_, b_, c_] := N[(c + N[(N[(N[(z * 0.0625), $MachinePrecision] * t + N[(x * y), $MachinePrecision]), $MachinePrecision] - N[(N[(a * b), $MachinePrecision] / 4.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
c + \left(\mathsf{fma}\left(z \cdot 0.0625, t, x \cdot y\right) - \frac{a \cdot b}{4}\right)
\end{array}
Derivation
  1. Initial program 98.0%

    \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
  2. Add Preprocessing
  3. Step-by-step derivation
    1. +-commutative98.0%

      \[\leadsto \left(\color{blue}{\left(\frac{z \cdot t}{16} + x \cdot y\right)} - \frac{a \cdot b}{4}\right) + c \]
    2. associate-*l/98.0%

      \[\leadsto \left(\left(\color{blue}{\frac{z}{16} \cdot t} + x \cdot y\right) - \frac{a \cdot b}{4}\right) + c \]
    3. fma-def98.0%

      \[\leadsto \left(\color{blue}{\mathsf{fma}\left(\frac{z}{16}, t, x \cdot y\right)} - \frac{a \cdot b}{4}\right) + c \]
    4. div-inv98.0%

      \[\leadsto \left(\mathsf{fma}\left(\color{blue}{z \cdot \frac{1}{16}}, t, x \cdot y\right) - \frac{a \cdot b}{4}\right) + c \]
    5. metadata-eval98.0%

      \[\leadsto \left(\mathsf{fma}\left(z \cdot \color{blue}{0.0625}, t, x \cdot y\right) - \frac{a \cdot b}{4}\right) + c \]
  4. Applied egg-rr98.0%

    \[\leadsto \left(\color{blue}{\mathsf{fma}\left(z \cdot 0.0625, t, x \cdot y\right)} - \frac{a \cdot b}{4}\right) + c \]
  5. Final simplification98.0%

    \[\leadsto c + \left(\mathsf{fma}\left(z \cdot 0.0625, t, x \cdot y\right) - \frac{a \cdot b}{4}\right) \]
  6. Add Preprocessing

Alternative 3: 64.7% accurate, 0.5× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := c + a \cdot \left(b \cdot -0.25\right)\\ t_2 := c + x \cdot y\\ \mathbf{if}\;x \cdot y \leq -1.2 \cdot 10^{+169}:\\ \;\;\;\;t_2\\ \mathbf{elif}\;x \cdot y \leq -1.95 \cdot 10^{-5}:\\ \;\;\;\;t_1\\ \mathbf{elif}\;x \cdot y \leq -9 \cdot 10^{-32}:\\ \;\;\;\;c + 0.0625 \cdot \left(z \cdot t\right)\\ \mathbf{elif}\;x \cdot y \leq 4.9 \cdot 10^{+57}:\\ \;\;\;\;t_1\\ \mathbf{else}:\\ \;\;\;\;t_2\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (let* ((t_1 (+ c (* a (* b -0.25)))) (t_2 (+ c (* x y))))
   (if (<= (* x y) -1.2e+169)
     t_2
     (if (<= (* x y) -1.95e-5)
       t_1
       (if (<= (* x y) -9e-32)
         (+ c (* 0.0625 (* z t)))
         (if (<= (* x y) 4.9e+57) t_1 t_2))))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = c + (a * (b * -0.25));
	double t_2 = c + (x * y);
	double tmp;
	if ((x * y) <= -1.2e+169) {
		tmp = t_2;
	} else if ((x * y) <= -1.95e-5) {
		tmp = t_1;
	} else if ((x * y) <= -9e-32) {
		tmp = c + (0.0625 * (z * t));
	} else if ((x * y) <= 4.9e+57) {
		tmp = t_1;
	} else {
		tmp = t_2;
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b, c)
    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), intent (in) :: c
    real(8) :: t_1
    real(8) :: t_2
    real(8) :: tmp
    t_1 = c + (a * (b * (-0.25d0)))
    t_2 = c + (x * y)
    if ((x * y) <= (-1.2d+169)) then
        tmp = t_2
    else if ((x * y) <= (-1.95d-5)) then
        tmp = t_1
    else if ((x * y) <= (-9d-32)) then
        tmp = c + (0.0625d0 * (z * t))
    else if ((x * y) <= 4.9d+57) then
        tmp = t_1
    else
        tmp = t_2
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = c + (a * (b * -0.25));
	double t_2 = c + (x * y);
	double tmp;
	if ((x * y) <= -1.2e+169) {
		tmp = t_2;
	} else if ((x * y) <= -1.95e-5) {
		tmp = t_1;
	} else if ((x * y) <= -9e-32) {
		tmp = c + (0.0625 * (z * t));
	} else if ((x * y) <= 4.9e+57) {
		tmp = t_1;
	} else {
		tmp = t_2;
	}
	return tmp;
}
def code(x, y, z, t, a, b, c):
	t_1 = c + (a * (b * -0.25))
	t_2 = c + (x * y)
	tmp = 0
	if (x * y) <= -1.2e+169:
		tmp = t_2
	elif (x * y) <= -1.95e-5:
		tmp = t_1
	elif (x * y) <= -9e-32:
		tmp = c + (0.0625 * (z * t))
	elif (x * y) <= 4.9e+57:
		tmp = t_1
	else:
		tmp = t_2
	return tmp
function code(x, y, z, t, a, b, c)
	t_1 = Float64(c + Float64(a * Float64(b * -0.25)))
	t_2 = Float64(c + Float64(x * y))
	tmp = 0.0
	if (Float64(x * y) <= -1.2e+169)
		tmp = t_2;
	elseif (Float64(x * y) <= -1.95e-5)
		tmp = t_1;
	elseif (Float64(x * y) <= -9e-32)
		tmp = Float64(c + Float64(0.0625 * Float64(z * t)));
	elseif (Float64(x * y) <= 4.9e+57)
		tmp = t_1;
	else
		tmp = t_2;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b, c)
	t_1 = c + (a * (b * -0.25));
	t_2 = c + (x * y);
	tmp = 0.0;
	if ((x * y) <= -1.2e+169)
		tmp = t_2;
	elseif ((x * y) <= -1.95e-5)
		tmp = t_1;
	elseif ((x * y) <= -9e-32)
		tmp = c + (0.0625 * (z * t));
	elseif ((x * y) <= 4.9e+57)
		tmp = t_1;
	else
		tmp = t_2;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_, c_] := Block[{t$95$1 = N[(c + N[(a * N[(b * -0.25), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, Block[{t$95$2 = N[(c + N[(x * y), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[N[(x * y), $MachinePrecision], -1.2e+169], t$95$2, If[LessEqual[N[(x * y), $MachinePrecision], -1.95e-5], t$95$1, If[LessEqual[N[(x * y), $MachinePrecision], -9e-32], N[(c + N[(0.0625 * N[(z * t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[N[(x * y), $MachinePrecision], 4.9e+57], t$95$1, t$95$2]]]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := c + a \cdot \left(b \cdot -0.25\right)\\
t_2 := c + x \cdot y\\
\mathbf{if}\;x \cdot y \leq -1.2 \cdot 10^{+169}:\\
\;\;\;\;t_2\\

\mathbf{elif}\;x \cdot y \leq -1.95 \cdot 10^{-5}:\\
\;\;\;\;t_1\\

\mathbf{elif}\;x \cdot y \leq -9 \cdot 10^{-32}:\\
\;\;\;\;c + 0.0625 \cdot \left(z \cdot t\right)\\

\mathbf{elif}\;x \cdot y \leq 4.9 \cdot 10^{+57}:\\
\;\;\;\;t_1\\

\mathbf{else}:\\
\;\;\;\;t_2\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if (*.f64 x y) < -1.1999999999999999e169 or 4.8999999999999999e57 < (*.f64 x y)

    1. Initial program 96.6%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in x around inf 79.1%

      \[\leadsto \color{blue}{x \cdot y} + c \]

    if -1.1999999999999999e169 < (*.f64 x y) < -1.95e-5 or -9.00000000000000009e-32 < (*.f64 x y) < 4.8999999999999999e57

    1. Initial program 98.7%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in a around inf 67.0%

      \[\leadsto \color{blue}{-0.25 \cdot \left(a \cdot b\right)} + c \]
    4. Step-by-step derivation
      1. *-commutative67.0%

        \[\leadsto \color{blue}{\left(a \cdot b\right) \cdot -0.25} + c \]
      2. associate-*r*67.0%

        \[\leadsto \color{blue}{a \cdot \left(b \cdot -0.25\right)} + c \]
    5. Simplified67.0%

      \[\leadsto \color{blue}{a \cdot \left(b \cdot -0.25\right)} + c \]

    if -1.95e-5 < (*.f64 x y) < -9.00000000000000009e-32

    1. Initial program 100.0%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in z around inf 83.6%

      \[\leadsto \color{blue}{0.0625 \cdot \left(t \cdot z\right)} + c \]
  3. Recombined 3 regimes into one program.
  4. Final simplification71.5%

    \[\leadsto \begin{array}{l} \mathbf{if}\;x \cdot y \leq -1.2 \cdot 10^{+169}:\\ \;\;\;\;c + x \cdot y\\ \mathbf{elif}\;x \cdot y \leq -1.95 \cdot 10^{-5}:\\ \;\;\;\;c + a \cdot \left(b \cdot -0.25\right)\\ \mathbf{elif}\;x \cdot y \leq -9 \cdot 10^{-32}:\\ \;\;\;\;c + 0.0625 \cdot \left(z \cdot t\right)\\ \mathbf{elif}\;x \cdot y \leq 4.9 \cdot 10^{+57}:\\ \;\;\;\;c + a \cdot \left(b \cdot -0.25\right)\\ \mathbf{else}:\\ \;\;\;\;c + x \cdot y\\ \end{array} \]
  5. Add Preprocessing

Alternative 4: 89.2% accurate, 0.6× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \left(a \cdot b\right) \cdot 0.25\\ t_2 := 0.0625 \cdot \left(z \cdot t\right)\\ \mathbf{if}\;x \cdot y \leq -1.9 \cdot 10^{+17}:\\ \;\;\;\;c + \left(x \cdot y - t_1\right)\\ \mathbf{elif}\;x \cdot y \leq 2.4 \cdot 10^{+60}:\\ \;\;\;\;c + \left(t_2 - t_1\right)\\ \mathbf{else}:\\ \;\;\;\;c + \left(x \cdot y + t_2\right)\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (let* ((t_1 (* (* a b) 0.25)) (t_2 (* 0.0625 (* z t))))
   (if (<= (* x y) -1.9e+17)
     (+ c (- (* x y) t_1))
     (if (<= (* x y) 2.4e+60) (+ c (- t_2 t_1)) (+ c (+ (* x y) t_2))))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = (a * b) * 0.25;
	double t_2 = 0.0625 * (z * t);
	double tmp;
	if ((x * y) <= -1.9e+17) {
		tmp = c + ((x * y) - t_1);
	} else if ((x * y) <= 2.4e+60) {
		tmp = c + (t_2 - t_1);
	} else {
		tmp = c + ((x * y) + t_2);
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b, c)
    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), intent (in) :: c
    real(8) :: t_1
    real(8) :: t_2
    real(8) :: tmp
    t_1 = (a * b) * 0.25d0
    t_2 = 0.0625d0 * (z * t)
    if ((x * y) <= (-1.9d+17)) then
        tmp = c + ((x * y) - t_1)
    else if ((x * y) <= 2.4d+60) then
        tmp = c + (t_2 - t_1)
    else
        tmp = c + ((x * y) + t_2)
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = (a * b) * 0.25;
	double t_2 = 0.0625 * (z * t);
	double tmp;
	if ((x * y) <= -1.9e+17) {
		tmp = c + ((x * y) - t_1);
	} else if ((x * y) <= 2.4e+60) {
		tmp = c + (t_2 - t_1);
	} else {
		tmp = c + ((x * y) + t_2);
	}
	return tmp;
}
def code(x, y, z, t, a, b, c):
	t_1 = (a * b) * 0.25
	t_2 = 0.0625 * (z * t)
	tmp = 0
	if (x * y) <= -1.9e+17:
		tmp = c + ((x * y) - t_1)
	elif (x * y) <= 2.4e+60:
		tmp = c + (t_2 - t_1)
	else:
		tmp = c + ((x * y) + t_2)
	return tmp
function code(x, y, z, t, a, b, c)
	t_1 = Float64(Float64(a * b) * 0.25)
	t_2 = Float64(0.0625 * Float64(z * t))
	tmp = 0.0
	if (Float64(x * y) <= -1.9e+17)
		tmp = Float64(c + Float64(Float64(x * y) - t_1));
	elseif (Float64(x * y) <= 2.4e+60)
		tmp = Float64(c + Float64(t_2 - t_1));
	else
		tmp = Float64(c + Float64(Float64(x * y) + t_2));
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b, c)
	t_1 = (a * b) * 0.25;
	t_2 = 0.0625 * (z * t);
	tmp = 0.0;
	if ((x * y) <= -1.9e+17)
		tmp = c + ((x * y) - t_1);
	elseif ((x * y) <= 2.4e+60)
		tmp = c + (t_2 - t_1);
	else
		tmp = c + ((x * y) + t_2);
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_, c_] := Block[{t$95$1 = N[(N[(a * b), $MachinePrecision] * 0.25), $MachinePrecision]}, Block[{t$95$2 = N[(0.0625 * N[(z * t), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[N[(x * y), $MachinePrecision], -1.9e+17], N[(c + N[(N[(x * y), $MachinePrecision] - t$95$1), $MachinePrecision]), $MachinePrecision], If[LessEqual[N[(x * y), $MachinePrecision], 2.4e+60], N[(c + N[(t$95$2 - t$95$1), $MachinePrecision]), $MachinePrecision], N[(c + N[(N[(x * y), $MachinePrecision] + t$95$2), $MachinePrecision]), $MachinePrecision]]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := \left(a \cdot b\right) \cdot 0.25\\
t_2 := 0.0625 \cdot \left(z \cdot t\right)\\
\mathbf{if}\;x \cdot y \leq -1.9 \cdot 10^{+17}:\\
\;\;\;\;c + \left(x \cdot y - t_1\right)\\

\mathbf{elif}\;x \cdot y \leq 2.4 \cdot 10^{+60}:\\
\;\;\;\;c + \left(t_2 - t_1\right)\\

\mathbf{else}:\\
\;\;\;\;c + \left(x \cdot y + t_2\right)\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if (*.f64 x y) < -1.9e17

    1. Initial program 94.4%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in z around 0 86.3%

      \[\leadsto \color{blue}{\left(x \cdot y - 0.25 \cdot \left(a \cdot b\right)\right)} + c \]

    if -1.9e17 < (*.f64 x y) < 2.4e60

    1. Initial program 99.3%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in x around 0 95.3%

      \[\leadsto \color{blue}{\left(0.0625 \cdot \left(t \cdot z\right) - 0.25 \cdot \left(a \cdot b\right)\right)} + c \]

    if 2.4e60 < (*.f64 x y)

    1. Initial program 98.4%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in a around 0 92.2%

      \[\leadsto \color{blue}{\left(0.0625 \cdot \left(t \cdot z\right) + x \cdot y\right)} + c \]
  3. Recombined 3 regimes into one program.
  4. Final simplification92.6%

    \[\leadsto \begin{array}{l} \mathbf{if}\;x \cdot y \leq -1.9 \cdot 10^{+17}:\\ \;\;\;\;c + \left(x \cdot y - \left(a \cdot b\right) \cdot 0.25\right)\\ \mathbf{elif}\;x \cdot y \leq 2.4 \cdot 10^{+60}:\\ \;\;\;\;c + \left(0.0625 \cdot \left(z \cdot t\right) - \left(a \cdot b\right) \cdot 0.25\right)\\ \mathbf{else}:\\ \;\;\;\;c + \left(x \cdot y + 0.0625 \cdot \left(z \cdot t\right)\right)\\ \end{array} \]
  5. Add Preprocessing

Alternative 5: 75.7% accurate, 0.7× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;a \leq -1.48 \cdot 10^{+174} \lor \neg \left(a \leq -2.85 \cdot 10^{+128}\right) \land a \leq -1.5 \cdot 10^{+81}:\\ \;\;\;\;c + a \cdot \left(b \cdot -0.25\right)\\ \mathbf{else}:\\ \;\;\;\;c + \left(x \cdot y + 0.0625 \cdot \left(z \cdot t\right)\right)\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (if (or (<= a -1.48e+174) (and (not (<= a -2.85e+128)) (<= a -1.5e+81)))
   (+ c (* a (* b -0.25)))
   (+ c (+ (* x y) (* 0.0625 (* z t))))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double tmp;
	if ((a <= -1.48e+174) || (!(a <= -2.85e+128) && (a <= -1.5e+81))) {
		tmp = c + (a * (b * -0.25));
	} else {
		tmp = c + ((x * y) + (0.0625 * (z * t)));
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b, c)
    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), intent (in) :: c
    real(8) :: tmp
    if ((a <= (-1.48d+174)) .or. (.not. (a <= (-2.85d+128))) .and. (a <= (-1.5d+81))) then
        tmp = c + (a * (b * (-0.25d0)))
    else
        tmp = c + ((x * y) + (0.0625d0 * (z * t)))
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	double tmp;
	if ((a <= -1.48e+174) || (!(a <= -2.85e+128) && (a <= -1.5e+81))) {
		tmp = c + (a * (b * -0.25));
	} else {
		tmp = c + ((x * y) + (0.0625 * (z * t)));
	}
	return tmp;
}
def code(x, y, z, t, a, b, c):
	tmp = 0
	if (a <= -1.48e+174) or (not (a <= -2.85e+128) and (a <= -1.5e+81)):
		tmp = c + (a * (b * -0.25))
	else:
		tmp = c + ((x * y) + (0.0625 * (z * t)))
	return tmp
function code(x, y, z, t, a, b, c)
	tmp = 0.0
	if ((a <= -1.48e+174) || (!(a <= -2.85e+128) && (a <= -1.5e+81)))
		tmp = Float64(c + Float64(a * Float64(b * -0.25)));
	else
		tmp = Float64(c + Float64(Float64(x * y) + Float64(0.0625 * Float64(z * t))));
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b, c)
	tmp = 0.0;
	if ((a <= -1.48e+174) || (~((a <= -2.85e+128)) && (a <= -1.5e+81)))
		tmp = c + (a * (b * -0.25));
	else
		tmp = c + ((x * y) + (0.0625 * (z * t)));
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_, c_] := If[Or[LessEqual[a, -1.48e+174], And[N[Not[LessEqual[a, -2.85e+128]], $MachinePrecision], LessEqual[a, -1.5e+81]]], N[(c + N[(a * N[(b * -0.25), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(c + N[(N[(x * y), $MachinePrecision] + N[(0.0625 * N[(z * t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;a \leq -1.48 \cdot 10^{+174} \lor \neg \left(a \leq -2.85 \cdot 10^{+128}\right) \land a \leq -1.5 \cdot 10^{+81}:\\
\;\;\;\;c + a \cdot \left(b \cdot -0.25\right)\\

\mathbf{else}:\\
\;\;\;\;c + \left(x \cdot y + 0.0625 \cdot \left(z \cdot t\right)\right)\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if a < -1.47999999999999994e174 or -2.85000000000000012e128 < a < -1.49999999999999999e81

    1. Initial program 97.4%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in a around inf 74.9%

      \[\leadsto \color{blue}{-0.25 \cdot \left(a \cdot b\right)} + c \]
    4. Step-by-step derivation
      1. *-commutative74.9%

        \[\leadsto \color{blue}{\left(a \cdot b\right) \cdot -0.25} + c \]
      2. associate-*r*74.9%

        \[\leadsto \color{blue}{a \cdot \left(b \cdot -0.25\right)} + c \]
    5. Simplified74.9%

      \[\leadsto \color{blue}{a \cdot \left(b \cdot -0.25\right)} + c \]

    if -1.47999999999999994e174 < a < -2.85000000000000012e128 or -1.49999999999999999e81 < a

    1. Initial program 98.1%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in a around 0 77.5%

      \[\leadsto \color{blue}{\left(0.0625 \cdot \left(t \cdot z\right) + x \cdot y\right)} + c \]
  3. Recombined 2 regimes into one program.
  4. Final simplification77.1%

    \[\leadsto \begin{array}{l} \mathbf{if}\;a \leq -1.48 \cdot 10^{+174} \lor \neg \left(a \leq -2.85 \cdot 10^{+128}\right) \land a \leq -1.5 \cdot 10^{+81}:\\ \;\;\;\;c + a \cdot \left(b \cdot -0.25\right)\\ \mathbf{else}:\\ \;\;\;\;c + \left(x \cdot y + 0.0625 \cdot \left(z \cdot t\right)\right)\\ \end{array} \]
  5. Add Preprocessing

Alternative 6: 89.0% accurate, 0.7× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;a \cdot b \leq -2 \cdot 10^{+134} \lor \neg \left(a \cdot b \leq 4 \cdot 10^{+96}\right):\\ \;\;\;\;c + \left(x \cdot y - \left(a \cdot b\right) \cdot 0.25\right)\\ \mathbf{else}:\\ \;\;\;\;c + \left(x \cdot y + 0.0625 \cdot \left(z \cdot t\right)\right)\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (if (or (<= (* a b) -2e+134) (not (<= (* a b) 4e+96)))
   (+ c (- (* x y) (* (* a b) 0.25)))
   (+ c (+ (* x y) (* 0.0625 (* z t))))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double tmp;
	if (((a * b) <= -2e+134) || !((a * b) <= 4e+96)) {
		tmp = c + ((x * y) - ((a * b) * 0.25));
	} else {
		tmp = c + ((x * y) + (0.0625 * (z * t)));
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b, c)
    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), intent (in) :: c
    real(8) :: tmp
    if (((a * b) <= (-2d+134)) .or. (.not. ((a * b) <= 4d+96))) then
        tmp = c + ((x * y) - ((a * b) * 0.25d0))
    else
        tmp = c + ((x * y) + (0.0625d0 * (z * t)))
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	double tmp;
	if (((a * b) <= -2e+134) || !((a * b) <= 4e+96)) {
		tmp = c + ((x * y) - ((a * b) * 0.25));
	} else {
		tmp = c + ((x * y) + (0.0625 * (z * t)));
	}
	return tmp;
}
def code(x, y, z, t, a, b, c):
	tmp = 0
	if ((a * b) <= -2e+134) or not ((a * b) <= 4e+96):
		tmp = c + ((x * y) - ((a * b) * 0.25))
	else:
		tmp = c + ((x * y) + (0.0625 * (z * t)))
	return tmp
function code(x, y, z, t, a, b, c)
	tmp = 0.0
	if ((Float64(a * b) <= -2e+134) || !(Float64(a * b) <= 4e+96))
		tmp = Float64(c + Float64(Float64(x * y) - Float64(Float64(a * b) * 0.25)));
	else
		tmp = Float64(c + Float64(Float64(x * y) + Float64(0.0625 * Float64(z * t))));
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b, c)
	tmp = 0.0;
	if (((a * b) <= -2e+134) || ~(((a * b) <= 4e+96)))
		tmp = c + ((x * y) - ((a * b) * 0.25));
	else
		tmp = c + ((x * y) + (0.0625 * (z * t)));
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_, c_] := If[Or[LessEqual[N[(a * b), $MachinePrecision], -2e+134], N[Not[LessEqual[N[(a * b), $MachinePrecision], 4e+96]], $MachinePrecision]], N[(c + N[(N[(x * y), $MachinePrecision] - N[(N[(a * b), $MachinePrecision] * 0.25), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(c + N[(N[(x * y), $MachinePrecision] + N[(0.0625 * N[(z * t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;a \cdot b \leq -2 \cdot 10^{+134} \lor \neg \left(a \cdot b \leq 4 \cdot 10^{+96}\right):\\
\;\;\;\;c + \left(x \cdot y - \left(a \cdot b\right) \cdot 0.25\right)\\

\mathbf{else}:\\
\;\;\;\;c + \left(x \cdot y + 0.0625 \cdot \left(z \cdot t\right)\right)\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if (*.f64 a b) < -1.99999999999999984e134 or 4.0000000000000002e96 < (*.f64 a b)

    1. Initial program 94.9%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in z around 0 85.2%

      \[\leadsto \color{blue}{\left(x \cdot y - 0.25 \cdot \left(a \cdot b\right)\right)} + c \]

    if -1.99999999999999984e134 < (*.f64 a b) < 4.0000000000000002e96

    1. Initial program 100.0%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in a around 0 93.4%

      \[\leadsto \color{blue}{\left(0.0625 \cdot \left(t \cdot z\right) + x \cdot y\right)} + c \]
  3. Recombined 2 regimes into one program.
  4. Final simplification90.3%

    \[\leadsto \begin{array}{l} \mathbf{if}\;a \cdot b \leq -2 \cdot 10^{+134} \lor \neg \left(a \cdot b \leq 4 \cdot 10^{+96}\right):\\ \;\;\;\;c + \left(x \cdot y - \left(a \cdot b\right) \cdot 0.25\right)\\ \mathbf{else}:\\ \;\;\;\;c + \left(x \cdot y + 0.0625 \cdot \left(z \cdot t\right)\right)\\ \end{array} \]
  5. Add Preprocessing

Alternative 7: 88.4% accurate, 0.7× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \left(a \cdot b\right) \cdot 0.25\\ t_2 := 0.0625 \cdot \left(z \cdot t\right)\\ \mathbf{if}\;a \cdot b \leq -2 \cdot 10^{+134}:\\ \;\;\;\;t_2 - t_1\\ \mathbf{elif}\;a \cdot b \leq 4 \cdot 10^{+96}:\\ \;\;\;\;c + \left(x \cdot y + t_2\right)\\ \mathbf{else}:\\ \;\;\;\;c + \left(x \cdot y - t_1\right)\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (let* ((t_1 (* (* a b) 0.25)) (t_2 (* 0.0625 (* z t))))
   (if (<= (* a b) -2e+134)
     (- t_2 t_1)
     (if (<= (* a b) 4e+96) (+ c (+ (* x y) t_2)) (+ c (- (* x y) t_1))))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = (a * b) * 0.25;
	double t_2 = 0.0625 * (z * t);
	double tmp;
	if ((a * b) <= -2e+134) {
		tmp = t_2 - t_1;
	} else if ((a * b) <= 4e+96) {
		tmp = c + ((x * y) + t_2);
	} else {
		tmp = c + ((x * y) - t_1);
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b, c)
    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), intent (in) :: c
    real(8) :: t_1
    real(8) :: t_2
    real(8) :: tmp
    t_1 = (a * b) * 0.25d0
    t_2 = 0.0625d0 * (z * t)
    if ((a * b) <= (-2d+134)) then
        tmp = t_2 - t_1
    else if ((a * b) <= 4d+96) then
        tmp = c + ((x * y) + t_2)
    else
        tmp = c + ((x * y) - t_1)
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = (a * b) * 0.25;
	double t_2 = 0.0625 * (z * t);
	double tmp;
	if ((a * b) <= -2e+134) {
		tmp = t_2 - t_1;
	} else if ((a * b) <= 4e+96) {
		tmp = c + ((x * y) + t_2);
	} else {
		tmp = c + ((x * y) - t_1);
	}
	return tmp;
}
def code(x, y, z, t, a, b, c):
	t_1 = (a * b) * 0.25
	t_2 = 0.0625 * (z * t)
	tmp = 0
	if (a * b) <= -2e+134:
		tmp = t_2 - t_1
	elif (a * b) <= 4e+96:
		tmp = c + ((x * y) + t_2)
	else:
		tmp = c + ((x * y) - t_1)
	return tmp
function code(x, y, z, t, a, b, c)
	t_1 = Float64(Float64(a * b) * 0.25)
	t_2 = Float64(0.0625 * Float64(z * t))
	tmp = 0.0
	if (Float64(a * b) <= -2e+134)
		tmp = Float64(t_2 - t_1);
	elseif (Float64(a * b) <= 4e+96)
		tmp = Float64(c + Float64(Float64(x * y) + t_2));
	else
		tmp = Float64(c + Float64(Float64(x * y) - t_1));
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b, c)
	t_1 = (a * b) * 0.25;
	t_2 = 0.0625 * (z * t);
	tmp = 0.0;
	if ((a * b) <= -2e+134)
		tmp = t_2 - t_1;
	elseif ((a * b) <= 4e+96)
		tmp = c + ((x * y) + t_2);
	else
		tmp = c + ((x * y) - t_1);
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_, c_] := Block[{t$95$1 = N[(N[(a * b), $MachinePrecision] * 0.25), $MachinePrecision]}, Block[{t$95$2 = N[(0.0625 * N[(z * t), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[N[(a * b), $MachinePrecision], -2e+134], N[(t$95$2 - t$95$1), $MachinePrecision], If[LessEqual[N[(a * b), $MachinePrecision], 4e+96], N[(c + N[(N[(x * y), $MachinePrecision] + t$95$2), $MachinePrecision]), $MachinePrecision], N[(c + N[(N[(x * y), $MachinePrecision] - t$95$1), $MachinePrecision]), $MachinePrecision]]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := \left(a \cdot b\right) \cdot 0.25\\
t_2 := 0.0625 \cdot \left(z \cdot t\right)\\
\mathbf{if}\;a \cdot b \leq -2 \cdot 10^{+134}:\\
\;\;\;\;t_2 - t_1\\

\mathbf{elif}\;a \cdot b \leq 4 \cdot 10^{+96}:\\
\;\;\;\;c + \left(x \cdot y + t_2\right)\\

\mathbf{else}:\\
\;\;\;\;c + \left(x \cdot y - t_1\right)\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if (*.f64 a b) < -1.99999999999999984e134

    1. Initial program 94.4%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in x around 0 91.0%

      \[\leadsto \color{blue}{\left(0.0625 \cdot \left(t \cdot z\right) - 0.25 \cdot \left(a \cdot b\right)\right)} + c \]
    4. Taylor expanded in c around 0 89.2%

      \[\leadsto \color{blue}{0.0625 \cdot \left(t \cdot z\right) - 0.25 \cdot \left(a \cdot b\right)} \]

    if -1.99999999999999984e134 < (*.f64 a b) < 4.0000000000000002e96

    1. Initial program 100.0%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in a around 0 93.4%

      \[\leadsto \color{blue}{\left(0.0625 \cdot \left(t \cdot z\right) + x \cdot y\right)} + c \]

    if 4.0000000000000002e96 < (*.f64 a b)

    1. Initial program 95.5%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in z around 0 91.1%

      \[\leadsto \color{blue}{\left(x \cdot y - 0.25 \cdot \left(a \cdot b\right)\right)} + c \]
  3. Recombined 3 regimes into one program.
  4. Final simplification92.1%

    \[\leadsto \begin{array}{l} \mathbf{if}\;a \cdot b \leq -2 \cdot 10^{+134}:\\ \;\;\;\;0.0625 \cdot \left(z \cdot t\right) - \left(a \cdot b\right) \cdot 0.25\\ \mathbf{elif}\;a \cdot b \leq 4 \cdot 10^{+96}:\\ \;\;\;\;c + \left(x \cdot y + 0.0625 \cdot \left(z \cdot t\right)\right)\\ \mathbf{else}:\\ \;\;\;\;c + \left(x \cdot y - \left(a \cdot b\right) \cdot 0.25\right)\\ \end{array} \]
  5. Add Preprocessing

Alternative 8: 63.2% accurate, 0.8× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;x \cdot y \leq -9 \cdot 10^{+38} \lor \neg \left(x \cdot y \leq 1.52 \cdot 10^{-52}\right):\\ \;\;\;\;c + x \cdot y\\ \mathbf{else}:\\ \;\;\;\;c + 0.0625 \cdot \left(z \cdot t\right)\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (if (or (<= (* x y) -9e+38) (not (<= (* x y) 1.52e-52)))
   (+ c (* x y))
   (+ c (* 0.0625 (* z t)))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double tmp;
	if (((x * y) <= -9e+38) || !((x * y) <= 1.52e-52)) {
		tmp = c + (x * y);
	} else {
		tmp = c + (0.0625 * (z * t));
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b, c)
    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), intent (in) :: c
    real(8) :: tmp
    if (((x * y) <= (-9d+38)) .or. (.not. ((x * y) <= 1.52d-52))) then
        tmp = c + (x * y)
    else
        tmp = c + (0.0625d0 * (z * t))
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	double tmp;
	if (((x * y) <= -9e+38) || !((x * y) <= 1.52e-52)) {
		tmp = c + (x * y);
	} else {
		tmp = c + (0.0625 * (z * t));
	}
	return tmp;
}
def code(x, y, z, t, a, b, c):
	tmp = 0
	if ((x * y) <= -9e+38) or not ((x * y) <= 1.52e-52):
		tmp = c + (x * y)
	else:
		tmp = c + (0.0625 * (z * t))
	return tmp
function code(x, y, z, t, a, b, c)
	tmp = 0.0
	if ((Float64(x * y) <= -9e+38) || !(Float64(x * y) <= 1.52e-52))
		tmp = Float64(c + Float64(x * y));
	else
		tmp = Float64(c + Float64(0.0625 * Float64(z * t)));
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b, c)
	tmp = 0.0;
	if (((x * y) <= -9e+38) || ~(((x * y) <= 1.52e-52)))
		tmp = c + (x * y);
	else
		tmp = c + (0.0625 * (z * t));
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_, c_] := If[Or[LessEqual[N[(x * y), $MachinePrecision], -9e+38], N[Not[LessEqual[N[(x * y), $MachinePrecision], 1.52e-52]], $MachinePrecision]], N[(c + N[(x * y), $MachinePrecision]), $MachinePrecision], N[(c + N[(0.0625 * N[(z * t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;x \cdot y \leq -9 \cdot 10^{+38} \lor \neg \left(x \cdot y \leq 1.52 \cdot 10^{-52}\right):\\
\;\;\;\;c + x \cdot y\\

\mathbf{else}:\\
\;\;\;\;c + 0.0625 \cdot \left(z \cdot t\right)\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if (*.f64 x y) < -8.99999999999999961e38 or 1.5199999999999999e-52 < (*.f64 x y)

    1. Initial program 97.6%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in x around inf 67.2%

      \[\leadsto \color{blue}{x \cdot y} + c \]

    if -8.99999999999999961e38 < (*.f64 x y) < 1.5199999999999999e-52

    1. Initial program 98.4%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in z around inf 59.4%

      \[\leadsto \color{blue}{0.0625 \cdot \left(t \cdot z\right)} + c \]
  3. Recombined 2 regimes into one program.
  4. Final simplification63.3%

    \[\leadsto \begin{array}{l} \mathbf{if}\;x \cdot y \leq -9 \cdot 10^{+38} \lor \neg \left(x \cdot y \leq 1.52 \cdot 10^{-52}\right):\\ \;\;\;\;c + x \cdot y\\ \mathbf{else}:\\ \;\;\;\;c + 0.0625 \cdot \left(z \cdot t\right)\\ \end{array} \]
  5. Add Preprocessing

Alternative 9: 97.6% accurate, 1.0× speedup?

\[\begin{array}{l} \\ c + \left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (+ c (- (+ (* x y) (/ (* z t) 16.0)) (/ (* a b) 4.0))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	return c + (((x * y) + ((z * t) / 16.0)) - ((a * b) / 4.0));
}
real(8) function code(x, y, z, t, a, b, c)
    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), intent (in) :: c
    code = c + (((x * y) + ((z * t) / 16.0d0)) - ((a * b) / 4.0d0))
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	return c + (((x * y) + ((z * t) / 16.0)) - ((a * b) / 4.0));
}
def code(x, y, z, t, a, b, c):
	return c + (((x * y) + ((z * t) / 16.0)) - ((a * b) / 4.0))
function code(x, y, z, t, a, b, c)
	return Float64(c + Float64(Float64(Float64(x * y) + Float64(Float64(z * t) / 16.0)) - Float64(Float64(a * b) / 4.0)))
end
function tmp = code(x, y, z, t, a, b, c)
	tmp = c + (((x * y) + ((z * t) / 16.0)) - ((a * b) / 4.0));
end
code[x_, y_, z_, t_, a_, b_, c_] := N[(c + N[(N[(N[(x * y), $MachinePrecision] + N[(N[(z * t), $MachinePrecision] / 16.0), $MachinePrecision]), $MachinePrecision] - N[(N[(a * b), $MachinePrecision] / 4.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
c + \left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right)
\end{array}
Derivation
  1. Initial program 98.0%

    \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
  2. Add Preprocessing
  3. Final simplification98.0%

    \[\leadsto c + \left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) \]
  4. Add Preprocessing

Alternative 10: 48.0% accurate, 3.4× speedup?

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

\\
c + x \cdot y
\end{array}
Derivation
  1. Initial program 98.0%

    \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
  2. Add Preprocessing
  3. Taylor expanded in x around inf 49.4%

    \[\leadsto \color{blue}{x \cdot y} + c \]
  4. Final simplification49.4%

    \[\leadsto c + x \cdot y \]
  5. Add Preprocessing

Alternative 11: 22.3% accurate, 17.0× speedup?

\[\begin{array}{l} \\ c \end{array} \]
(FPCore (x y z t a b c) :precision binary64 c)
double code(double x, double y, double z, double t, double a, double b, double c) {
	return c;
}
real(8) function code(x, y, z, t, a, b, c)
    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), intent (in) :: c
    code = c
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	return c;
}
def code(x, y, z, t, a, b, c):
	return c
function code(x, y, z, t, a, b, c)
	return c
end
function tmp = code(x, y, z, t, a, b, c)
	tmp = c;
end
code[x_, y_, z_, t_, a_, b_, c_] := c
\begin{array}{l}

\\
c
\end{array}
Derivation
  1. Initial program 98.0%

    \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
  2. Step-by-step derivation
    1. sub-neg98.0%

      \[\leadsto \color{blue}{\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) + \left(-\frac{a \cdot b}{4}\right)\right)} + c \]
    2. associate-+l+98.0%

      \[\leadsto \color{blue}{\left(x \cdot y + \frac{z \cdot t}{16}\right) + \left(\left(-\frac{a \cdot b}{4}\right) + c\right)} \]
    3. fma-def98.0%

      \[\leadsto \color{blue}{\mathsf{fma}\left(x, y, \frac{z \cdot t}{16}\right)} + \left(\left(-\frac{a \cdot b}{4}\right) + c\right) \]
    4. associate-*l/98.0%

      \[\leadsto \mathsf{fma}\left(x, y, \color{blue}{\frac{z}{16} \cdot t}\right) + \left(\left(-\frac{a \cdot b}{4}\right) + c\right) \]
    5. distribute-frac-neg98.0%

      \[\leadsto \mathsf{fma}\left(x, y, \frac{z}{16} \cdot t\right) + \left(\color{blue}{\frac{-a \cdot b}{4}} + c\right) \]
    6. distribute-rgt-neg-out98.0%

      \[\leadsto \mathsf{fma}\left(x, y, \frac{z}{16} \cdot t\right) + \left(\frac{\color{blue}{a \cdot \left(-b\right)}}{4} + c\right) \]
    7. associate-/l*97.9%

      \[\leadsto \mathsf{fma}\left(x, y, \frac{z}{16} \cdot t\right) + \left(\color{blue}{\frac{a}{\frac{4}{-b}}} + c\right) \]
    8. neg-mul-197.9%

      \[\leadsto \mathsf{fma}\left(x, y, \frac{z}{16} \cdot t\right) + \left(\frac{a}{\frac{4}{\color{blue}{-1 \cdot b}}} + c\right) \]
    9. associate-/r*97.9%

      \[\leadsto \mathsf{fma}\left(x, y, \frac{z}{16} \cdot t\right) + \left(\frac{a}{\color{blue}{\frac{\frac{4}{-1}}{b}}} + c\right) \]
    10. metadata-eval97.9%

      \[\leadsto \mathsf{fma}\left(x, y, \frac{z}{16} \cdot t\right) + \left(\frac{a}{\frac{\color{blue}{-4}}{b}} + c\right) \]
  3. Simplified97.9%

    \[\leadsto \color{blue}{\mathsf{fma}\left(x, y, \frac{z}{16} \cdot t\right) + \left(\frac{a}{\frac{-4}{b}} + c\right)} \]
  4. Add Preprocessing
  5. Taylor expanded in c around inf 19.9%

    \[\leadsto \color{blue}{c} \]
  6. Final simplification19.9%

    \[\leadsto c \]
  7. Add Preprocessing

Reproduce

?
herbie shell --seed 2024024 
(FPCore (x y z t a b c)
  :name "Diagrams.Solve.Polynomial:quartForm  from diagrams-solve-0.1, C"
  :precision binary64
  (+ (- (+ (* x y) (/ (* z t) 16.0)) (/ (* a b) 4.0)) c))