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

Percentage Accurate: 69.9% → 76.4%
Time: 14.2s
Alternatives: 9
Speedup: 1.2×

Specification

?
\[\begin{array}{l} \\ \left(2 \cdot \sqrt{x}\right) \cdot \cos \left(y - \frac{z \cdot t}{3}\right) - \frac{a}{b \cdot 3} \end{array} \]
(FPCore (x y z t a b)
 :precision binary64
 (- (* (* 2.0 (sqrt x)) (cos (- y (/ (* z t) 3.0)))) (/ a (* b 3.0))))
double code(double x, double y, double z, double t, double a, double b) {
	return ((2.0 * sqrt(x)) * cos((y - ((z * t) / 3.0)))) - (a / (b * 3.0));
}
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 * sqrt(x)) * cos((y - ((z * t) / 3.0d0)))) - (a / (b * 3.0d0))
end function
public static double code(double x, double y, double z, double t, double a, double b) {
	return ((2.0 * Math.sqrt(x)) * Math.cos((y - ((z * t) / 3.0)))) - (a / (b * 3.0));
}
def code(x, y, z, t, a, b):
	return ((2.0 * math.sqrt(x)) * math.cos((y - ((z * t) / 3.0)))) - (a / (b * 3.0))
function code(x, y, z, t, a, b)
	return Float64(Float64(Float64(2.0 * sqrt(x)) * cos(Float64(y - Float64(Float64(z * t) / 3.0)))) - Float64(a / Float64(b * 3.0)))
end
function tmp = code(x, y, z, t, a, b)
	tmp = ((2.0 * sqrt(x)) * cos((y - ((z * t) / 3.0)))) - (a / (b * 3.0));
end
code[x_, y_, z_, t_, a_, b_] := N[(N[(N[(2.0 * N[Sqrt[x], $MachinePrecision]), $MachinePrecision] * N[Cos[N[(y - N[(N[(z * t), $MachinePrecision] / 3.0), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision] - N[(a / N[(b * 3.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
\left(2 \cdot \sqrt{x}\right) \cdot \cos \left(y - \frac{z \cdot t}{3}\right) - \frac{a}{b \cdot 3}
\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 9 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: 69.9% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \left(2 \cdot \sqrt{x}\right) \cdot \cos \left(y - \frac{z \cdot t}{3}\right) - \frac{a}{b \cdot 3} \end{array} \]
(FPCore (x y z t a b)
 :precision binary64
 (- (* (* 2.0 (sqrt x)) (cos (- y (/ (* z t) 3.0)))) (/ a (* b 3.0))))
double code(double x, double y, double z, double t, double a, double b) {
	return ((2.0 * sqrt(x)) * cos((y - ((z * t) / 3.0)))) - (a / (b * 3.0));
}
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 * sqrt(x)) * cos((y - ((z * t) / 3.0d0)))) - (a / (b * 3.0d0))
end function
public static double code(double x, double y, double z, double t, double a, double b) {
	return ((2.0 * Math.sqrt(x)) * Math.cos((y - ((z * t) / 3.0)))) - (a / (b * 3.0));
}
def code(x, y, z, t, a, b):
	return ((2.0 * math.sqrt(x)) * math.cos((y - ((z * t) / 3.0)))) - (a / (b * 3.0))
function code(x, y, z, t, a, b)
	return Float64(Float64(Float64(2.0 * sqrt(x)) * cos(Float64(y - Float64(Float64(z * t) / 3.0)))) - Float64(a / Float64(b * 3.0)))
end
function tmp = code(x, y, z, t, a, b)
	tmp = ((2.0 * sqrt(x)) * cos((y - ((z * t) / 3.0)))) - (a / (b * 3.0));
end
code[x_, y_, z_, t_, a_, b_] := N[(N[(N[(2.0 * N[Sqrt[x], $MachinePrecision]), $MachinePrecision] * N[Cos[N[(y - N[(N[(z * t), $MachinePrecision] / 3.0), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision] - N[(a / N[(b * 3.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
\left(2 \cdot \sqrt{x}\right) \cdot \cos \left(y - \frac{z \cdot t}{3}\right) - \frac{a}{b \cdot 3}
\end{array}

Alternative 1: 76.4% accurate, 1.1× speedup?

\[\begin{array}{l} \\ \left(2 \cdot \sqrt{x}\right) \cdot \cos y - \frac{a}{b \cdot 3} \end{array} \]
(FPCore (x y z t a b)
 :precision binary64
 (- (* (* 2.0 (sqrt x)) (cos y)) (/ a (* b 3.0))))
double code(double x, double y, double z, double t, double a, double b) {
	return ((2.0 * sqrt(x)) * cos(y)) - (a / (b * 3.0));
}
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 * sqrt(x)) * cos(y)) - (a / (b * 3.0d0))
end function
public static double code(double x, double y, double z, double t, double a, double b) {
	return ((2.0 * Math.sqrt(x)) * Math.cos(y)) - (a / (b * 3.0));
}
def code(x, y, z, t, a, b):
	return ((2.0 * math.sqrt(x)) * math.cos(y)) - (a / (b * 3.0))
function code(x, y, z, t, a, b)
	return Float64(Float64(Float64(2.0 * sqrt(x)) * cos(y)) - Float64(a / Float64(b * 3.0)))
end
function tmp = code(x, y, z, t, a, b)
	tmp = ((2.0 * sqrt(x)) * cos(y)) - (a / (b * 3.0));
end
code[x_, y_, z_, t_, a_, b_] := N[(N[(N[(2.0 * N[Sqrt[x], $MachinePrecision]), $MachinePrecision] * N[Cos[y], $MachinePrecision]), $MachinePrecision] - N[(a / N[(b * 3.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
\left(2 \cdot \sqrt{x}\right) \cdot \cos y - \frac{a}{b \cdot 3}
\end{array}
Derivation
  1. Initial program 70.9%

    \[\left(2 \cdot \sqrt{x}\right) \cdot \cos \left(y - \frac{z \cdot t}{3}\right) - \frac{a}{b \cdot 3} \]
  2. Add Preprocessing
  3. Taylor expanded in z around 0

    \[\leadsto \left(2 \cdot \sqrt{x}\right) \cdot \color{blue}{\cos y} - \frac{a}{b \cdot 3} \]
  4. Step-by-step derivation
    1. lower-cos.f6477.5

      \[\leadsto \left(2 \cdot \sqrt{x}\right) \cdot \color{blue}{\cos y} - \frac{a}{b \cdot 3} \]
  5. Applied rewrites77.5%

    \[\leadsto \left(2 \cdot \sqrt{x}\right) \cdot \color{blue}{\cos y} - \frac{a}{b \cdot 3} \]
  6. Add Preprocessing

Alternative 2: 71.2% accurate, 0.9× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \frac{a}{b \cdot 3}\\ \mathbf{if}\;t\_1 \leq -1.65 \cdot 10^{-69} \lor \neg \left(t\_1 \leq 2 \cdot 10^{-78}\right):\\ \;\;\;\;\mathsf{fma}\left(\frac{2}{a}, \sqrt{x}, \frac{-0.3333333333333333}{b}\right) \cdot a\\ \mathbf{else}:\\ \;\;\;\;\left(\sqrt{x} \cdot 2\right) \cdot \cos \left(\mathsf{fma}\left(-0.3333333333333333, t \cdot z, y\right)\right)\\ \end{array} \end{array} \]
(FPCore (x y z t a b)
 :precision binary64
 (let* ((t_1 (/ a (* b 3.0))))
   (if (or (<= t_1 -1.65e-69) (not (<= t_1 2e-78)))
     (* (fma (/ 2.0 a) (sqrt x) (/ -0.3333333333333333 b)) a)
     (* (* (sqrt x) 2.0) (cos (fma -0.3333333333333333 (* t z) y))))))
double code(double x, double y, double z, double t, double a, double b) {
	double t_1 = a / (b * 3.0);
	double tmp;
	if ((t_1 <= -1.65e-69) || !(t_1 <= 2e-78)) {
		tmp = fma((2.0 / a), sqrt(x), (-0.3333333333333333 / b)) * a;
	} else {
		tmp = (sqrt(x) * 2.0) * cos(fma(-0.3333333333333333, (t * z), y));
	}
	return tmp;
}
function code(x, y, z, t, a, b)
	t_1 = Float64(a / Float64(b * 3.0))
	tmp = 0.0
	if ((t_1 <= -1.65e-69) || !(t_1 <= 2e-78))
		tmp = Float64(fma(Float64(2.0 / a), sqrt(x), Float64(-0.3333333333333333 / b)) * a);
	else
		tmp = Float64(Float64(sqrt(x) * 2.0) * cos(fma(-0.3333333333333333, Float64(t * z), y)));
	end
	return tmp
end
code[x_, y_, z_, t_, a_, b_] := Block[{t$95$1 = N[(a / N[(b * 3.0), $MachinePrecision]), $MachinePrecision]}, If[Or[LessEqual[t$95$1, -1.65e-69], N[Not[LessEqual[t$95$1, 2e-78]], $MachinePrecision]], N[(N[(N[(2.0 / a), $MachinePrecision] * N[Sqrt[x], $MachinePrecision] + N[(-0.3333333333333333 / b), $MachinePrecision]), $MachinePrecision] * a), $MachinePrecision], N[(N[(N[Sqrt[x], $MachinePrecision] * 2.0), $MachinePrecision] * N[Cos[N[(-0.3333333333333333 * N[(t * z), $MachinePrecision] + y), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := \frac{a}{b \cdot 3}\\
\mathbf{if}\;t\_1 \leq -1.65 \cdot 10^{-69} \lor \neg \left(t\_1 \leq 2 \cdot 10^{-78}\right):\\
\;\;\;\;\mathsf{fma}\left(\frac{2}{a}, \sqrt{x}, \frac{-0.3333333333333333}{b}\right) \cdot a\\

\mathbf{else}:\\
\;\;\;\;\left(\sqrt{x} \cdot 2\right) \cdot \cos \left(\mathsf{fma}\left(-0.3333333333333333, t \cdot z, y\right)\right)\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if (/.f64 a (*.f64 b #s(literal 3 binary64))) < -1.65e-69 or 2e-78 < (/.f64 a (*.f64 b #s(literal 3 binary64)))

    1. Initial program 79.2%

      \[\left(2 \cdot \sqrt{x}\right) \cdot \cos \left(y - \frac{z \cdot t}{3}\right) - \frac{a}{b \cdot 3} \]
    2. Add Preprocessing
    3. Taylor expanded in a around inf

      \[\leadsto \color{blue}{a \cdot \left(2 \cdot \left(\frac{\cos \left(y - \frac{1}{3} \cdot \left(t \cdot z\right)\right)}{a} \cdot \sqrt{x}\right) - \frac{1}{3} \cdot \frac{1}{b}\right)} \]
    4. Applied rewrites78.4%

      \[\leadsto \color{blue}{\mathsf{fma}\left(\cos \left(\mathsf{fma}\left(-0.3333333333333333, t \cdot z, y\right)\right) \cdot \frac{\sqrt{x}}{a}, 2, \frac{-0.3333333333333333}{b}\right) \cdot a} \]
    5. Taylor expanded in z around 0

      \[\leadsto \frac{2}{3} \cdot \left(\left(t \cdot \left(z \cdot \sin y\right)\right) \cdot \sqrt{x}\right) + \color{blue}{a \cdot \left(2 \cdot \left(\frac{\cos y}{a} \cdot \sqrt{x}\right) - \frac{1}{3} \cdot \frac{1}{b}\right)} \]
    6. Step-by-step derivation
      1. Applied rewrites73.2%

        \[\leadsto \mathsf{fma}\left(0.6666666666666666 \cdot \left(\left(\sin y \cdot z\right) \cdot t\right), \color{blue}{\sqrt{x}}, \mathsf{fma}\left(2 \cdot \frac{\cos y}{a}, \sqrt{x}, \frac{-0.3333333333333333}{b}\right) \cdot a\right) \]
      2. Step-by-step derivation
        1. Applied rewrites75.1%

          \[\leadsto \color{blue}{\mathsf{fma}\left(\sqrt{x} \cdot \left(\left(\sin y \cdot z\right) \cdot 0.6666666666666666\right), t, \mathsf{fma}\left(2 \cdot \sqrt{x}, \frac{\cos y}{a}, \frac{-0.3333333333333333}{b}\right) \cdot a\right)} \]
        2. Taylor expanded in y around 0

          \[\leadsto a \cdot \left(2 \cdot \left(\frac{1}{a} \cdot \sqrt{x}\right) - \color{blue}{\frac{1}{3} \cdot \frac{1}{b}}\right) \]
        3. Step-by-step derivation
          1. Applied rewrites86.0%

            \[\leadsto \mathsf{fma}\left(\frac{2}{a}, \sqrt{x}, \frac{-0.3333333333333333}{b}\right) \cdot a \]

          if -1.65e-69 < (/.f64 a (*.f64 b #s(literal 3 binary64))) < 2e-78

          1. Initial program 55.8%

            \[\left(2 \cdot \sqrt{x}\right) \cdot \cos \left(y - \frac{z \cdot t}{3}\right) - \frac{a}{b \cdot 3} \]
          2. Add Preprocessing
          3. Taylor expanded in x around -inf

            \[\leadsto \color{blue}{-2 \cdot \left(\sqrt{x} \cdot \left(\cos \left(y - \frac{1}{3} \cdot \left(t \cdot z\right)\right) \cdot {\left(\sqrt{-1}\right)}^{2}\right)\right)} \]
          4. Applied rewrites51.0%

            \[\leadsto \color{blue}{\left(\sqrt{x} \cdot 2\right) \cdot \cos \left(\mathsf{fma}\left(-0.3333333333333333, t \cdot z, y\right)\right)} \]
        4. Recombined 2 regimes into one program.
        5. Final simplification73.5%

          \[\leadsto \begin{array}{l} \mathbf{if}\;\frac{a}{b \cdot 3} \leq -1.65 \cdot 10^{-69} \lor \neg \left(\frac{a}{b \cdot 3} \leq 2 \cdot 10^{-78}\right):\\ \;\;\;\;\mathsf{fma}\left(\frac{2}{a}, \sqrt{x}, \frac{-0.3333333333333333}{b}\right) \cdot a\\ \mathbf{else}:\\ \;\;\;\;\left(\sqrt{x} \cdot 2\right) \cdot \cos \left(\mathsf{fma}\left(-0.3333333333333333, t \cdot z, y\right)\right)\\ \end{array} \]
        6. Add Preprocessing

        Alternative 3: 76.3% accurate, 1.2× speedup?

        \[\begin{array}{l} \\ \mathsf{fma}\left(a, \frac{-0.3333333333333333}{b}, \cos y \cdot \left(\sqrt{x} \cdot 2\right)\right) \end{array} \]
        (FPCore (x y z t a b)
         :precision binary64
         (fma a (/ -0.3333333333333333 b) (* (cos y) (* (sqrt x) 2.0))))
        double code(double x, double y, double z, double t, double a, double b) {
        	return fma(a, (-0.3333333333333333 / b), (cos(y) * (sqrt(x) * 2.0)));
        }
        
        function code(x, y, z, t, a, b)
        	return fma(a, Float64(-0.3333333333333333 / b), Float64(cos(y) * Float64(sqrt(x) * 2.0)))
        end
        
        code[x_, y_, z_, t_, a_, b_] := N[(a * N[(-0.3333333333333333 / b), $MachinePrecision] + N[(N[Cos[y], $MachinePrecision] * N[(N[Sqrt[x], $MachinePrecision] * 2.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
        
        \begin{array}{l}
        
        \\
        \mathsf{fma}\left(a, \frac{-0.3333333333333333}{b}, \cos y \cdot \left(\sqrt{x} \cdot 2\right)\right)
        \end{array}
        
        Derivation
        1. Initial program 70.9%

          \[\left(2 \cdot \sqrt{x}\right) \cdot \cos \left(y - \frac{z \cdot t}{3}\right) - \frac{a}{b \cdot 3} \]
        2. Add Preprocessing
        3. Taylor expanded in z around 0

          \[\leadsto \left(2 \cdot \sqrt{x}\right) \cdot \color{blue}{\cos y} - \frac{a}{b \cdot 3} \]
        4. Step-by-step derivation
          1. lower-cos.f6477.5

            \[\leadsto \left(2 \cdot \sqrt{x}\right) \cdot \color{blue}{\cos y} - \frac{a}{b \cdot 3} \]
        5. Applied rewrites77.5%

          \[\leadsto \left(2 \cdot \sqrt{x}\right) \cdot \color{blue}{\cos y} - \frac{a}{b \cdot 3} \]
        6. Step-by-step derivation
          1. lift--.f64N/A

            \[\leadsto \color{blue}{\left(2 \cdot \sqrt{x}\right) \cdot \cos y - \frac{a}{b \cdot 3}} \]
          2. sub-negN/A

            \[\leadsto \color{blue}{\left(2 \cdot \sqrt{x}\right) \cdot \cos y + \left(\mathsf{neg}\left(\frac{a}{b \cdot 3}\right)\right)} \]
          3. +-commutativeN/A

            \[\leadsto \color{blue}{\left(\mathsf{neg}\left(\frac{a}{b \cdot 3}\right)\right) + \left(2 \cdot \sqrt{x}\right) \cdot \cos y} \]
          4. lift-/.f64N/A

            \[\leadsto \left(\mathsf{neg}\left(\color{blue}{\frac{a}{b \cdot 3}}\right)\right) + \left(2 \cdot \sqrt{x}\right) \cdot \cos y \]
          5. div-invN/A

            \[\leadsto \left(\mathsf{neg}\left(\color{blue}{a \cdot \frac{1}{b \cdot 3}}\right)\right) + \left(2 \cdot \sqrt{x}\right) \cdot \cos y \]
          6. distribute-rgt-neg-inN/A

            \[\leadsto \color{blue}{a \cdot \left(\mathsf{neg}\left(\frac{1}{b \cdot 3}\right)\right)} + \left(2 \cdot \sqrt{x}\right) \cdot \cos y \]
          7. lift-*.f64N/A

            \[\leadsto a \cdot \left(\mathsf{neg}\left(\frac{1}{\color{blue}{b \cdot 3}}\right)\right) + \left(2 \cdot \sqrt{x}\right) \cdot \cos y \]
          8. *-commutativeN/A

            \[\leadsto a \cdot \left(\mathsf{neg}\left(\frac{1}{\color{blue}{3 \cdot b}}\right)\right) + \left(2 \cdot \sqrt{x}\right) \cdot \cos y \]
          9. associate-/r*N/A

            \[\leadsto a \cdot \left(\mathsf{neg}\left(\color{blue}{\frac{\frac{1}{3}}{b}}\right)\right) + \left(2 \cdot \sqrt{x}\right) \cdot \cos y \]
          10. metadata-evalN/A

            \[\leadsto a \cdot \left(\mathsf{neg}\left(\frac{\color{blue}{\frac{1}{3}}}{b}\right)\right) + \left(2 \cdot \sqrt{x}\right) \cdot \cos y \]
          11. distribute-frac-neg2N/A

            \[\leadsto a \cdot \color{blue}{\frac{\frac{1}{3}}{\mathsf{neg}\left(b\right)}} + \left(2 \cdot \sqrt{x}\right) \cdot \cos y \]
          12. metadata-evalN/A

            \[\leadsto a \cdot \frac{\color{blue}{\mathsf{neg}\left(\frac{-1}{3}\right)}}{\mathsf{neg}\left(b\right)} + \left(2 \cdot \sqrt{x}\right) \cdot \cos y \]
          13. frac-2negN/A

            \[\leadsto a \cdot \color{blue}{\frac{\frac{-1}{3}}{b}} + \left(2 \cdot \sqrt{x}\right) \cdot \cos y \]
          14. lift-/.f64N/A

            \[\leadsto a \cdot \color{blue}{\frac{\frac{-1}{3}}{b}} + \left(2 \cdot \sqrt{x}\right) \cdot \cos y \]
          15. lower-fma.f6477.4

            \[\leadsto \color{blue}{\mathsf{fma}\left(a, \frac{-0.3333333333333333}{b}, \left(2 \cdot \sqrt{x}\right) \cdot \cos y\right)} \]
          16. lift-*.f64N/A

            \[\leadsto \mathsf{fma}\left(a, \frac{\frac{-1}{3}}{b}, \color{blue}{\left(2 \cdot \sqrt{x}\right) \cdot \cos y}\right) \]
        7. Applied rewrites77.4%

          \[\leadsto \color{blue}{\mathsf{fma}\left(a, \frac{-0.3333333333333333}{b}, \cos y \cdot \left(\sqrt{x} \cdot 2\right)\right)} \]
        8. Add Preprocessing

        Alternative 4: 76.3% accurate, 1.2× speedup?

        \[\begin{array}{l} \\ \mathsf{fma}\left(2 \cdot \cos y, \sqrt{x}, -0.3333333333333333 \cdot \frac{a}{b}\right) \end{array} \]
        (FPCore (x y z t a b)
         :precision binary64
         (fma (* 2.0 (cos y)) (sqrt x) (* -0.3333333333333333 (/ a b))))
        double code(double x, double y, double z, double t, double a, double b) {
        	return fma((2.0 * cos(y)), sqrt(x), (-0.3333333333333333 * (a / b)));
        }
        
        function code(x, y, z, t, a, b)
        	return fma(Float64(2.0 * cos(y)), sqrt(x), Float64(-0.3333333333333333 * Float64(a / b)))
        end
        
        code[x_, y_, z_, t_, a_, b_] := N[(N[(2.0 * N[Cos[y], $MachinePrecision]), $MachinePrecision] * N[Sqrt[x], $MachinePrecision] + N[(-0.3333333333333333 * N[(a / b), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
        
        \begin{array}{l}
        
        \\
        \mathsf{fma}\left(2 \cdot \cos y, \sqrt{x}, -0.3333333333333333 \cdot \frac{a}{b}\right)
        \end{array}
        
        Derivation
        1. Initial program 70.9%

          \[\left(2 \cdot \sqrt{x}\right) \cdot \cos \left(y - \frac{z \cdot t}{3}\right) - \frac{a}{b \cdot 3} \]
        2. Add Preprocessing
        3. Taylor expanded in z around 0

          \[\leadsto \color{blue}{2 \cdot \left(\sqrt{x} \cdot \cos y\right) - \frac{1}{3} \cdot \frac{a}{b}} \]
        4. Step-by-step derivation
          1. cancel-sign-sub-invN/A

            \[\leadsto \color{blue}{2 \cdot \left(\sqrt{x} \cdot \cos y\right) + \left(\mathsf{neg}\left(\frac{1}{3}\right)\right) \cdot \frac{a}{b}} \]
          2. metadata-evalN/A

            \[\leadsto 2 \cdot \left(\sqrt{x} \cdot \cos y\right) + \color{blue}{\frac{-1}{3}} \cdot \frac{a}{b} \]
          3. *-commutativeN/A

            \[\leadsto 2 \cdot \color{blue}{\left(\cos y \cdot \sqrt{x}\right)} + \frac{-1}{3} \cdot \frac{a}{b} \]
          4. associate-*r*N/A

            \[\leadsto \color{blue}{\left(2 \cdot \cos y\right) \cdot \sqrt{x}} + \frac{-1}{3} \cdot \frac{a}{b} \]
          5. lower-fma.f64N/A

            \[\leadsto \color{blue}{\mathsf{fma}\left(2 \cdot \cos y, \sqrt{x}, \frac{-1}{3} \cdot \frac{a}{b}\right)} \]
          6. lower-*.f64N/A

            \[\leadsto \mathsf{fma}\left(\color{blue}{2 \cdot \cos y}, \sqrt{x}, \frac{-1}{3} \cdot \frac{a}{b}\right) \]
          7. lower-cos.f64N/A

            \[\leadsto \mathsf{fma}\left(2 \cdot \color{blue}{\cos y}, \sqrt{x}, \frac{-1}{3} \cdot \frac{a}{b}\right) \]
          8. lower-sqrt.f64N/A

            \[\leadsto \mathsf{fma}\left(2 \cdot \cos y, \color{blue}{\sqrt{x}}, \frac{-1}{3} \cdot \frac{a}{b}\right) \]
          9. lower-*.f64N/A

            \[\leadsto \mathsf{fma}\left(2 \cdot \cos y, \sqrt{x}, \color{blue}{\frac{-1}{3} \cdot \frac{a}{b}}\right) \]
          10. lower-/.f6477.0

            \[\leadsto \mathsf{fma}\left(2 \cdot \cos y, \sqrt{x}, -0.3333333333333333 \cdot \color{blue}{\frac{a}{b}}\right) \]
        5. Applied rewrites77.0%

          \[\leadsto \color{blue}{\mathsf{fma}\left(2 \cdot \cos y, \sqrt{x}, -0.3333333333333333 \cdot \frac{a}{b}\right)} \]
        6. Add Preprocessing

        Alternative 5: 58.8% accurate, 1.9× speedup?

        \[\begin{array}{l} \\ \begin{array}{l} t_1 := \frac{a}{b \cdot 3}\\ \mathbf{if}\;t\_1 \leq -1 \cdot 10^{-110} \lor \neg \left(t\_1 \leq 10^{-78}\right):\\ \;\;\;\;\frac{a}{-3 \cdot b}\\ \mathbf{else}:\\ \;\;\;\;\left(\left(\frac{1}{-a} \cdot \sqrt{x}\right) \cdot -2\right) \cdot a\\ \end{array} \end{array} \]
        (FPCore (x y z t a b)
         :precision binary64
         (let* ((t_1 (/ a (* b 3.0))))
           (if (or (<= t_1 -1e-110) (not (<= t_1 1e-78)))
             (/ a (* -3.0 b))
             (* (* (* (/ 1.0 (- a)) (sqrt x)) -2.0) a))))
        double code(double x, double y, double z, double t, double a, double b) {
        	double t_1 = a / (b * 3.0);
        	double tmp;
        	if ((t_1 <= -1e-110) || !(t_1 <= 1e-78)) {
        		tmp = a / (-3.0 * b);
        	} else {
        		tmp = (((1.0 / -a) * sqrt(x)) * -2.0) * a;
        	}
        	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) :: t_1
            real(8) :: tmp
            t_1 = a / (b * 3.0d0)
            if ((t_1 <= (-1d-110)) .or. (.not. (t_1 <= 1d-78))) then
                tmp = a / ((-3.0d0) * b)
            else
                tmp = (((1.0d0 / -a) * sqrt(x)) * (-2.0d0)) * a
            end if
            code = tmp
        end function
        
        public static double code(double x, double y, double z, double t, double a, double b) {
        	double t_1 = a / (b * 3.0);
        	double tmp;
        	if ((t_1 <= -1e-110) || !(t_1 <= 1e-78)) {
        		tmp = a / (-3.0 * b);
        	} else {
        		tmp = (((1.0 / -a) * Math.sqrt(x)) * -2.0) * a;
        	}
        	return tmp;
        }
        
        def code(x, y, z, t, a, b):
        	t_1 = a / (b * 3.0)
        	tmp = 0
        	if (t_1 <= -1e-110) or not (t_1 <= 1e-78):
        		tmp = a / (-3.0 * b)
        	else:
        		tmp = (((1.0 / -a) * math.sqrt(x)) * -2.0) * a
        	return tmp
        
        function code(x, y, z, t, a, b)
        	t_1 = Float64(a / Float64(b * 3.0))
        	tmp = 0.0
        	if ((t_1 <= -1e-110) || !(t_1 <= 1e-78))
        		tmp = Float64(a / Float64(-3.0 * b));
        	else
        		tmp = Float64(Float64(Float64(Float64(1.0 / Float64(-a)) * sqrt(x)) * -2.0) * a);
        	end
        	return tmp
        end
        
        function tmp_2 = code(x, y, z, t, a, b)
        	t_1 = a / (b * 3.0);
        	tmp = 0.0;
        	if ((t_1 <= -1e-110) || ~((t_1 <= 1e-78)))
        		tmp = a / (-3.0 * b);
        	else
        		tmp = (((1.0 / -a) * sqrt(x)) * -2.0) * a;
        	end
        	tmp_2 = tmp;
        end
        
        code[x_, y_, z_, t_, a_, b_] := Block[{t$95$1 = N[(a / N[(b * 3.0), $MachinePrecision]), $MachinePrecision]}, If[Or[LessEqual[t$95$1, -1e-110], N[Not[LessEqual[t$95$1, 1e-78]], $MachinePrecision]], N[(a / N[(-3.0 * b), $MachinePrecision]), $MachinePrecision], N[(N[(N[(N[(1.0 / (-a)), $MachinePrecision] * N[Sqrt[x], $MachinePrecision]), $MachinePrecision] * -2.0), $MachinePrecision] * a), $MachinePrecision]]]
        
        \begin{array}{l}
        
        \\
        \begin{array}{l}
        t_1 := \frac{a}{b \cdot 3}\\
        \mathbf{if}\;t\_1 \leq -1 \cdot 10^{-110} \lor \neg \left(t\_1 \leq 10^{-78}\right):\\
        \;\;\;\;\frac{a}{-3 \cdot b}\\
        
        \mathbf{else}:\\
        \;\;\;\;\left(\left(\frac{1}{-a} \cdot \sqrt{x}\right) \cdot -2\right) \cdot a\\
        
        
        \end{array}
        \end{array}
        
        Derivation
        1. Split input into 2 regimes
        2. if (/.f64 a (*.f64 b #s(literal 3 binary64))) < -1.0000000000000001e-110 or 9.99999999999999999e-79 < (/.f64 a (*.f64 b #s(literal 3 binary64)))

          1. Initial program 80.0%

            \[\left(2 \cdot \sqrt{x}\right) \cdot \cos \left(y - \frac{z \cdot t}{3}\right) - \frac{a}{b \cdot 3} \]
          2. Add Preprocessing
          3. Taylor expanded in a around inf

            \[\leadsto \color{blue}{\frac{-1}{3} \cdot \frac{a}{b}} \]
          4. Step-by-step derivation
            1. lower-*.f64N/A

              \[\leadsto \color{blue}{\frac{-1}{3} \cdot \frac{a}{b}} \]
            2. lower-/.f6473.5

              \[\leadsto -0.3333333333333333 \cdot \color{blue}{\frac{a}{b}} \]
          5. Applied rewrites73.5%

            \[\leadsto \color{blue}{-0.3333333333333333 \cdot \frac{a}{b}} \]
          6. Step-by-step derivation
            1. Applied rewrites74.1%

              \[\leadsto \frac{a}{\color{blue}{-3 \cdot b}} \]

            if -1.0000000000000001e-110 < (/.f64 a (*.f64 b #s(literal 3 binary64))) < 9.99999999999999999e-79

            1. Initial program 49.7%

              \[\left(2 \cdot \sqrt{x}\right) \cdot \cos \left(y - \frac{z \cdot t}{3}\right) - \frac{a}{b \cdot 3} \]
            2. Add Preprocessing
            3. Taylor expanded in a around inf

              \[\leadsto \color{blue}{a \cdot \left(2 \cdot \left(\frac{\cos \left(y - \frac{1}{3} \cdot \left(t \cdot z\right)\right)}{a} \cdot \sqrt{x}\right) - \frac{1}{3} \cdot \frac{1}{b}\right)} \]
            4. Applied rewrites41.0%

              \[\leadsto \color{blue}{\mathsf{fma}\left(\cos \left(\mathsf{fma}\left(-0.3333333333333333, t \cdot z, y\right)\right) \cdot \frac{\sqrt{x}}{a}, 2, \frac{-0.3333333333333333}{b}\right) \cdot a} \]
            5. Taylor expanded in x around -inf

              \[\leadsto \left(-2 \cdot \left(\frac{\cos \left(y + \frac{-1}{3} \cdot \left(t \cdot z\right)\right) \cdot {\left(\sqrt{-1}\right)}^{2}}{a} \cdot \sqrt{x}\right)\right) \cdot a \]
            6. Step-by-step derivation
              1. Applied rewrites40.8%

                \[\leadsto \left(\left(\left(\cos \left(\mathsf{fma}\left(-0.3333333333333333, t \cdot z, y\right)\right) \cdot \frac{-1}{a}\right) \cdot \sqrt{x}\right) \cdot -2\right) \cdot a \]
              2. Taylor expanded in y around 0

                \[\leadsto \left(\left(\left(-1 \cdot \frac{\cos \left(\frac{-1}{3} \cdot \left(t \cdot z\right)\right)}{a}\right) \cdot \sqrt{x}\right) \cdot -2\right) \cdot a \]
              3. Step-by-step derivation
                1. Applied rewrites24.4%

                  \[\leadsto \left(\left(\frac{\cos \left(0.3333333333333333 \cdot \left(t \cdot z\right)\right)}{-a} \cdot \sqrt{x}\right) \cdot -2\right) \cdot a \]
                2. Taylor expanded in z around 0

                  \[\leadsto \left(\left(\frac{1}{-a} \cdot \sqrt{x}\right) \cdot -2\right) \cdot a \]
                3. Step-by-step derivation
                  1. Applied rewrites24.2%

                    \[\leadsto \left(\left(\frac{1}{-a} \cdot \sqrt{x}\right) \cdot -2\right) \cdot a \]
                4. Recombined 2 regimes into one program.
                5. Final simplification59.1%

                  \[\leadsto \begin{array}{l} \mathbf{if}\;\frac{a}{b \cdot 3} \leq -1 \cdot 10^{-110} \lor \neg \left(\frac{a}{b \cdot 3} \leq 10^{-78}\right):\\ \;\;\;\;\frac{a}{-3 \cdot b}\\ \mathbf{else}:\\ \;\;\;\;\left(\left(\frac{1}{-a} \cdot \sqrt{x}\right) \cdot -2\right) \cdot a\\ \end{array} \]
                6. Add Preprocessing

                Alternative 6: 63.5% accurate, 3.6× speedup?

                \[\begin{array}{l} \\ \mathsf{fma}\left(\frac{2}{a}, \sqrt{x}, \frac{-0.3333333333333333}{b}\right) \cdot a \end{array} \]
                (FPCore (x y z t a b)
                 :precision binary64
                 (* (fma (/ 2.0 a) (sqrt x) (/ -0.3333333333333333 b)) a))
                double code(double x, double y, double z, double t, double a, double b) {
                	return fma((2.0 / a), sqrt(x), (-0.3333333333333333 / b)) * a;
                }
                
                function code(x, y, z, t, a, b)
                	return Float64(fma(Float64(2.0 / a), sqrt(x), Float64(-0.3333333333333333 / b)) * a)
                end
                
                code[x_, y_, z_, t_, a_, b_] := N[(N[(N[(2.0 / a), $MachinePrecision] * N[Sqrt[x], $MachinePrecision] + N[(-0.3333333333333333 / b), $MachinePrecision]), $MachinePrecision] * a), $MachinePrecision]
                
                \begin{array}{l}
                
                \\
                \mathsf{fma}\left(\frac{2}{a}, \sqrt{x}, \frac{-0.3333333333333333}{b}\right) \cdot a
                \end{array}
                
                Derivation
                1. Initial program 70.9%

                  \[\left(2 \cdot \sqrt{x}\right) \cdot \cos \left(y - \frac{z \cdot t}{3}\right) - \frac{a}{b \cdot 3} \]
                2. Add Preprocessing
                3. Taylor expanded in a around inf

                  \[\leadsto \color{blue}{a \cdot \left(2 \cdot \left(\frac{\cos \left(y - \frac{1}{3} \cdot \left(t \cdot z\right)\right)}{a} \cdot \sqrt{x}\right) - \frac{1}{3} \cdot \frac{1}{b}\right)} \]
                4. Applied rewrites67.3%

                  \[\leadsto \color{blue}{\mathsf{fma}\left(\cos \left(\mathsf{fma}\left(-0.3333333333333333, t \cdot z, y\right)\right) \cdot \frac{\sqrt{x}}{a}, 2, \frac{-0.3333333333333333}{b}\right) \cdot a} \]
                5. Taylor expanded in z around 0

                  \[\leadsto \frac{2}{3} \cdot \left(\left(t \cdot \left(z \cdot \sin y\right)\right) \cdot \sqrt{x}\right) + \color{blue}{a \cdot \left(2 \cdot \left(\frac{\cos y}{a} \cdot \sqrt{x}\right) - \frac{1}{3} \cdot \frac{1}{b}\right)} \]
                6. Step-by-step derivation
                  1. Applied rewrites62.7%

                    \[\leadsto \mathsf{fma}\left(0.6666666666666666 \cdot \left(\left(\sin y \cdot z\right) \cdot t\right), \color{blue}{\sqrt{x}}, \mathsf{fma}\left(2 \cdot \frac{\cos y}{a}, \sqrt{x}, \frac{-0.3333333333333333}{b}\right) \cdot a\right) \]
                  2. Step-by-step derivation
                    1. Applied rewrites63.9%

                      \[\leadsto \color{blue}{\mathsf{fma}\left(\sqrt{x} \cdot \left(\left(\sin y \cdot z\right) \cdot 0.6666666666666666\right), t, \mathsf{fma}\left(2 \cdot \sqrt{x}, \frac{\cos y}{a}, \frac{-0.3333333333333333}{b}\right) \cdot a\right)} \]
                    2. Taylor expanded in y around 0

                      \[\leadsto a \cdot \left(2 \cdot \left(\frac{1}{a} \cdot \sqrt{x}\right) - \color{blue}{\frac{1}{3} \cdot \frac{1}{b}}\right) \]
                    3. Step-by-step derivation
                      1. Applied rewrites65.6%

                        \[\leadsto \mathsf{fma}\left(\frac{2}{a}, \sqrt{x}, \frac{-0.3333333333333333}{b}\right) \cdot a \]
                      2. Add Preprocessing

                      Alternative 7: 50.4% accurate, 9.4× speedup?

                      \[\begin{array}{l} \\ \frac{a}{-3 \cdot b} \end{array} \]
                      (FPCore (x y z t a b) :precision binary64 (/ a (* -3.0 b)))
                      double code(double x, double y, double z, double t, double a, double b) {
                      	return a / (-3.0 * 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 = a / ((-3.0d0) * b)
                      end function
                      
                      public static double code(double x, double y, double z, double t, double a, double b) {
                      	return a / (-3.0 * b);
                      }
                      
                      def code(x, y, z, t, a, b):
                      	return a / (-3.0 * b)
                      
                      function code(x, y, z, t, a, b)
                      	return Float64(a / Float64(-3.0 * b))
                      end
                      
                      function tmp = code(x, y, z, t, a, b)
                      	tmp = a / (-3.0 * b);
                      end
                      
                      code[x_, y_, z_, t_, a_, b_] := N[(a / N[(-3.0 * b), $MachinePrecision]), $MachinePrecision]
                      
                      \begin{array}{l}
                      
                      \\
                      \frac{a}{-3 \cdot b}
                      \end{array}
                      
                      Derivation
                      1. Initial program 70.9%

                        \[\left(2 \cdot \sqrt{x}\right) \cdot \cos \left(y - \frac{z \cdot t}{3}\right) - \frac{a}{b \cdot 3} \]
                      2. Add Preprocessing
                      3. Taylor expanded in a around inf

                        \[\leadsto \color{blue}{\frac{-1}{3} \cdot \frac{a}{b}} \]
                      4. Step-by-step derivation
                        1. lower-*.f64N/A

                          \[\leadsto \color{blue}{\frac{-1}{3} \cdot \frac{a}{b}} \]
                        2. lower-/.f6452.4

                          \[\leadsto -0.3333333333333333 \cdot \color{blue}{\frac{a}{b}} \]
                      5. Applied rewrites52.4%

                        \[\leadsto \color{blue}{-0.3333333333333333 \cdot \frac{a}{b}} \]
                      6. Step-by-step derivation
                        1. Applied rewrites52.8%

                          \[\leadsto \frac{a}{\color{blue}{-3 \cdot b}} \]
                        2. Add Preprocessing

                        Alternative 8: 50.3% accurate, 9.4× speedup?

                        \[\begin{array}{l} \\ \frac{-0.3333333333333333}{b} \cdot a \end{array} \]
                        (FPCore (x y z t a b) :precision binary64 (* (/ -0.3333333333333333 b) a))
                        double code(double x, double y, double z, double t, double a, double b) {
                        	return (-0.3333333333333333 / b) * a;
                        }
                        
                        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 = ((-0.3333333333333333d0) / b) * a
                        end function
                        
                        public static double code(double x, double y, double z, double t, double a, double b) {
                        	return (-0.3333333333333333 / b) * a;
                        }
                        
                        def code(x, y, z, t, a, b):
                        	return (-0.3333333333333333 / b) * a
                        
                        function code(x, y, z, t, a, b)
                        	return Float64(Float64(-0.3333333333333333 / b) * a)
                        end
                        
                        function tmp = code(x, y, z, t, a, b)
                        	tmp = (-0.3333333333333333 / b) * a;
                        end
                        
                        code[x_, y_, z_, t_, a_, b_] := N[(N[(-0.3333333333333333 / b), $MachinePrecision] * a), $MachinePrecision]
                        
                        \begin{array}{l}
                        
                        \\
                        \frac{-0.3333333333333333}{b} \cdot a
                        \end{array}
                        
                        Derivation
                        1. Initial program 70.9%

                          \[\left(2 \cdot \sqrt{x}\right) \cdot \cos \left(y - \frac{z \cdot t}{3}\right) - \frac{a}{b \cdot 3} \]
                        2. Add Preprocessing
                        3. Taylor expanded in a around inf

                          \[\leadsto \color{blue}{a \cdot \left(2 \cdot \left(\frac{\cos \left(y - \frac{1}{3} \cdot \left(t \cdot z\right)\right)}{a} \cdot \sqrt{x}\right) - \frac{1}{3} \cdot \frac{1}{b}\right)} \]
                        4. Applied rewrites67.3%

                          \[\leadsto \color{blue}{\mathsf{fma}\left(\cos \left(\mathsf{fma}\left(-0.3333333333333333, t \cdot z, y\right)\right) \cdot \frac{\sqrt{x}}{a}, 2, \frac{-0.3333333333333333}{b}\right) \cdot a} \]
                        5. Taylor expanded in a around inf

                          \[\leadsto \frac{\frac{-1}{3}}{b} \cdot a \]
                        6. Step-by-step derivation
                          1. Applied rewrites52.7%

                            \[\leadsto \frac{-0.3333333333333333}{b} \cdot a \]
                          2. Add Preprocessing

                          Alternative 9: 50.3% accurate, 9.4× speedup?

                          \[\begin{array}{l} \\ -0.3333333333333333 \cdot \frac{a}{b} \end{array} \]
                          (FPCore (x y z t a b) :precision binary64 (* -0.3333333333333333 (/ a b)))
                          double code(double x, double y, double z, double t, double a, double b) {
                          	return -0.3333333333333333 * (a / 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 = (-0.3333333333333333d0) * (a / b)
                          end function
                          
                          public static double code(double x, double y, double z, double t, double a, double b) {
                          	return -0.3333333333333333 * (a / b);
                          }
                          
                          def code(x, y, z, t, a, b):
                          	return -0.3333333333333333 * (a / b)
                          
                          function code(x, y, z, t, a, b)
                          	return Float64(-0.3333333333333333 * Float64(a / b))
                          end
                          
                          function tmp = code(x, y, z, t, a, b)
                          	tmp = -0.3333333333333333 * (a / b);
                          end
                          
                          code[x_, y_, z_, t_, a_, b_] := N[(-0.3333333333333333 * N[(a / b), $MachinePrecision]), $MachinePrecision]
                          
                          \begin{array}{l}
                          
                          \\
                          -0.3333333333333333 \cdot \frac{a}{b}
                          \end{array}
                          
                          Derivation
                          1. Initial program 70.9%

                            \[\left(2 \cdot \sqrt{x}\right) \cdot \cos \left(y - \frac{z \cdot t}{3}\right) - \frac{a}{b \cdot 3} \]
                          2. Add Preprocessing
                          3. Taylor expanded in a around inf

                            \[\leadsto \color{blue}{\frac{-1}{3} \cdot \frac{a}{b}} \]
                          4. Step-by-step derivation
                            1. lower-*.f64N/A

                              \[\leadsto \color{blue}{\frac{-1}{3} \cdot \frac{a}{b}} \]
                            2. lower-/.f6452.4

                              \[\leadsto -0.3333333333333333 \cdot \color{blue}{\frac{a}{b}} \]
                          5. Applied rewrites52.4%

                            \[\leadsto \color{blue}{-0.3333333333333333 \cdot \frac{a}{b}} \]
                          6. Add Preprocessing

                          Developer Target 1: 73.7% accurate, 0.8× speedup?

                          \[\begin{array}{l} \\ \begin{array}{l} t_1 := \frac{\frac{0.3333333333333333}{z}}{t}\\ t_2 := \frac{\frac{a}{3}}{b}\\ t_3 := 2 \cdot \sqrt{x}\\ \mathbf{if}\;z < -1.3793337487235141 \cdot 10^{+129}:\\ \;\;\;\;t\_3 \cdot \cos \left(\frac{1}{y} - t\_1\right) - t\_2\\ \mathbf{elif}\;z < 3.516290613555987 \cdot 10^{+106}:\\ \;\;\;\;\left(\sqrt{x} \cdot 2\right) \cdot \cos \left(y - \frac{t}{3} \cdot z\right) - t\_2\\ \mathbf{else}:\\ \;\;\;\;\cos \left(y - t\_1\right) \cdot t\_3 - \frac{\frac{a}{b}}{3}\\ \end{array} \end{array} \]
                          (FPCore (x y z t a b)
                           :precision binary64
                           (let* ((t_1 (/ (/ 0.3333333333333333 z) t))
                                  (t_2 (/ (/ a 3.0) b))
                                  (t_3 (* 2.0 (sqrt x))))
                             (if (< z -1.3793337487235141e+129)
                               (- (* t_3 (cos (- (/ 1.0 y) t_1))) t_2)
                               (if (< z 3.516290613555987e+106)
                                 (- (* (* (sqrt x) 2.0) (cos (- y (* (/ t 3.0) z)))) t_2)
                                 (- (* (cos (- y t_1)) t_3) (/ (/ a b) 3.0))))))
                          double code(double x, double y, double z, double t, double a, double b) {
                          	double t_1 = (0.3333333333333333 / z) / t;
                          	double t_2 = (a / 3.0) / b;
                          	double t_3 = 2.0 * sqrt(x);
                          	double tmp;
                          	if (z < -1.3793337487235141e+129) {
                          		tmp = (t_3 * cos(((1.0 / y) - t_1))) - t_2;
                          	} else if (z < 3.516290613555987e+106) {
                          		tmp = ((sqrt(x) * 2.0) * cos((y - ((t / 3.0) * z)))) - t_2;
                          	} else {
                          		tmp = (cos((y - t_1)) * t_3) - ((a / b) / 3.0);
                          	}
                          	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) :: t_1
                              real(8) :: t_2
                              real(8) :: t_3
                              real(8) :: tmp
                              t_1 = (0.3333333333333333d0 / z) / t
                              t_2 = (a / 3.0d0) / b
                              t_3 = 2.0d0 * sqrt(x)
                              if (z < (-1.3793337487235141d+129)) then
                                  tmp = (t_3 * cos(((1.0d0 / y) - t_1))) - t_2
                              else if (z < 3.516290613555987d+106) then
                                  tmp = ((sqrt(x) * 2.0d0) * cos((y - ((t / 3.0d0) * z)))) - t_2
                              else
                                  tmp = (cos((y - t_1)) * t_3) - ((a / b) / 3.0d0)
                              end if
                              code = tmp
                          end function
                          
                          public static double code(double x, double y, double z, double t, double a, double b) {
                          	double t_1 = (0.3333333333333333 / z) / t;
                          	double t_2 = (a / 3.0) / b;
                          	double t_3 = 2.0 * Math.sqrt(x);
                          	double tmp;
                          	if (z < -1.3793337487235141e+129) {
                          		tmp = (t_3 * Math.cos(((1.0 / y) - t_1))) - t_2;
                          	} else if (z < 3.516290613555987e+106) {
                          		tmp = ((Math.sqrt(x) * 2.0) * Math.cos((y - ((t / 3.0) * z)))) - t_2;
                          	} else {
                          		tmp = (Math.cos((y - t_1)) * t_3) - ((a / b) / 3.0);
                          	}
                          	return tmp;
                          }
                          
                          def code(x, y, z, t, a, b):
                          	t_1 = (0.3333333333333333 / z) / t
                          	t_2 = (a / 3.0) / b
                          	t_3 = 2.0 * math.sqrt(x)
                          	tmp = 0
                          	if z < -1.3793337487235141e+129:
                          		tmp = (t_3 * math.cos(((1.0 / y) - t_1))) - t_2
                          	elif z < 3.516290613555987e+106:
                          		tmp = ((math.sqrt(x) * 2.0) * math.cos((y - ((t / 3.0) * z)))) - t_2
                          	else:
                          		tmp = (math.cos((y - t_1)) * t_3) - ((a / b) / 3.0)
                          	return tmp
                          
                          function code(x, y, z, t, a, b)
                          	t_1 = Float64(Float64(0.3333333333333333 / z) / t)
                          	t_2 = Float64(Float64(a / 3.0) / b)
                          	t_3 = Float64(2.0 * sqrt(x))
                          	tmp = 0.0
                          	if (z < -1.3793337487235141e+129)
                          		tmp = Float64(Float64(t_3 * cos(Float64(Float64(1.0 / y) - t_1))) - t_2);
                          	elseif (z < 3.516290613555987e+106)
                          		tmp = Float64(Float64(Float64(sqrt(x) * 2.0) * cos(Float64(y - Float64(Float64(t / 3.0) * z)))) - t_2);
                          	else
                          		tmp = Float64(Float64(cos(Float64(y - t_1)) * t_3) - Float64(Float64(a / b) / 3.0));
                          	end
                          	return tmp
                          end
                          
                          function tmp_2 = code(x, y, z, t, a, b)
                          	t_1 = (0.3333333333333333 / z) / t;
                          	t_2 = (a / 3.0) / b;
                          	t_3 = 2.0 * sqrt(x);
                          	tmp = 0.0;
                          	if (z < -1.3793337487235141e+129)
                          		tmp = (t_3 * cos(((1.0 / y) - t_1))) - t_2;
                          	elseif (z < 3.516290613555987e+106)
                          		tmp = ((sqrt(x) * 2.0) * cos((y - ((t / 3.0) * z)))) - t_2;
                          	else
                          		tmp = (cos((y - t_1)) * t_3) - ((a / b) / 3.0);
                          	end
                          	tmp_2 = tmp;
                          end
                          
                          code[x_, y_, z_, t_, a_, b_] := Block[{t$95$1 = N[(N[(0.3333333333333333 / z), $MachinePrecision] / t), $MachinePrecision]}, Block[{t$95$2 = N[(N[(a / 3.0), $MachinePrecision] / b), $MachinePrecision]}, Block[{t$95$3 = N[(2.0 * N[Sqrt[x], $MachinePrecision]), $MachinePrecision]}, If[Less[z, -1.3793337487235141e+129], N[(N[(t$95$3 * N[Cos[N[(N[(1.0 / y), $MachinePrecision] - t$95$1), $MachinePrecision]], $MachinePrecision]), $MachinePrecision] - t$95$2), $MachinePrecision], If[Less[z, 3.516290613555987e+106], N[(N[(N[(N[Sqrt[x], $MachinePrecision] * 2.0), $MachinePrecision] * N[Cos[N[(y - N[(N[(t / 3.0), $MachinePrecision] * z), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision] - t$95$2), $MachinePrecision], N[(N[(N[Cos[N[(y - t$95$1), $MachinePrecision]], $MachinePrecision] * t$95$3), $MachinePrecision] - N[(N[(a / b), $MachinePrecision] / 3.0), $MachinePrecision]), $MachinePrecision]]]]]]
                          
                          \begin{array}{l}
                          
                          \\
                          \begin{array}{l}
                          t_1 := \frac{\frac{0.3333333333333333}{z}}{t}\\
                          t_2 := \frac{\frac{a}{3}}{b}\\
                          t_3 := 2 \cdot \sqrt{x}\\
                          \mathbf{if}\;z < -1.3793337487235141 \cdot 10^{+129}:\\
                          \;\;\;\;t\_3 \cdot \cos \left(\frac{1}{y} - t\_1\right) - t\_2\\
                          
                          \mathbf{elif}\;z < 3.516290613555987 \cdot 10^{+106}:\\
                          \;\;\;\;\left(\sqrt{x} \cdot 2\right) \cdot \cos \left(y - \frac{t}{3} \cdot z\right) - t\_2\\
                          
                          \mathbf{else}:\\
                          \;\;\;\;\cos \left(y - t\_1\right) \cdot t\_3 - \frac{\frac{a}{b}}{3}\\
                          
                          
                          \end{array}
                          \end{array}
                          

                          Reproduce

                          ?
                          herbie shell --seed 2024313 
                          (FPCore (x y z t a b)
                            :name "Diagrams.Solve.Polynomial:cubForm  from diagrams-solve-0.1, K"
                            :precision binary64
                          
                            :alt
                            (! :herbie-platform default (if (< z -1379333748723514100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000) (- (* (* 2 (sqrt x)) (cos (- (/ 1 y) (/ (/ 3333333333333333/10000000000000000 z) t)))) (/ (/ a 3) b)) (if (< z 35162906135559870000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000) (- (* (* (sqrt x) 2) (cos (- y (* (/ t 3) z)))) (/ (/ a 3) b)) (- (* (cos (- y (/ (/ 3333333333333333/10000000000000000 z) t))) (* 2 (sqrt x))) (/ (/ a b) 3)))))
                          
                            (- (* (* 2.0 (sqrt x)) (cos (- y (/ (* z t) 3.0)))) (/ a (* b 3.0))))