Average Error: 15.1 → 1.4
Time: 19.7s
Precision: binary64
Cost: 8016
\[ \begin{array}{c}[x, y] = \mathsf{sort}([x, y])\\ \end{array} \]
\[\frac{x \cdot y}{\left(z \cdot z\right) \cdot \left(z + 1\right)} \]
\[\begin{array}{l} t_0 := \frac{\frac{x \cdot y}{\mathsf{fma}\left(z, z, z\right)}}{z}\\ \mathbf{if}\;x \cdot y \leq -1 \cdot 10^{+303}:\\ \;\;\;\;\frac{\frac{y}{z}}{z \cdot \frac{z}{x}}\\ \mathbf{elif}\;x \cdot y \leq -1 \cdot 10^{-203}:\\ \;\;\;\;t_0\\ \mathbf{elif}\;x \cdot y \leq 5 \cdot 10^{-180}:\\ \;\;\;\;\frac{\frac{y}{z}}{\frac{\mathsf{fma}\left(z, z, z\right)}{x}}\\ \mathbf{elif}\;x \cdot y \leq 2 \cdot 10^{+132}:\\ \;\;\;\;t_0\\ \mathbf{else}:\\ \;\;\;\;\frac{\frac{y}{z}}{\frac{z}{\frac{x}{z}}}\\ \end{array} \]
(FPCore (x y z) :precision binary64 (/ (* x y) (* (* z z) (+ z 1.0))))
(FPCore (x y z)
 :precision binary64
 (let* ((t_0 (/ (/ (* x y) (fma z z z)) z)))
   (if (<= (* x y) -1e+303)
     (/ (/ y z) (* z (/ z x)))
     (if (<= (* x y) -1e-203)
       t_0
       (if (<= (* x y) 5e-180)
         (/ (/ y z) (/ (fma z z z) x))
         (if (<= (* x y) 2e+132) t_0 (/ (/ y z) (/ z (/ x z)))))))))
double code(double x, double y, double z) {
	return (x * y) / ((z * z) * (z + 1.0));
}
double code(double x, double y, double z) {
	double t_0 = ((x * y) / fma(z, z, z)) / z;
	double tmp;
	if ((x * y) <= -1e+303) {
		tmp = (y / z) / (z * (z / x));
	} else if ((x * y) <= -1e-203) {
		tmp = t_0;
	} else if ((x * y) <= 5e-180) {
		tmp = (y / z) / (fma(z, z, z) / x);
	} else if ((x * y) <= 2e+132) {
		tmp = t_0;
	} else {
		tmp = (y / z) / (z / (x / z));
	}
	return tmp;
}
function code(x, y, z)
	return Float64(Float64(x * y) / Float64(Float64(z * z) * Float64(z + 1.0)))
end
function code(x, y, z)
	t_0 = Float64(Float64(Float64(x * y) / fma(z, z, z)) / z)
	tmp = 0.0
	if (Float64(x * y) <= -1e+303)
		tmp = Float64(Float64(y / z) / Float64(z * Float64(z / x)));
	elseif (Float64(x * y) <= -1e-203)
		tmp = t_0;
	elseif (Float64(x * y) <= 5e-180)
		tmp = Float64(Float64(y / z) / Float64(fma(z, z, z) / x));
	elseif (Float64(x * y) <= 2e+132)
		tmp = t_0;
	else
		tmp = Float64(Float64(y / z) / Float64(z / Float64(x / z)));
	end
	return tmp
end
code[x_, y_, z_] := N[(N[(x * y), $MachinePrecision] / N[(N[(z * z), $MachinePrecision] * N[(z + 1.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
code[x_, y_, z_] := Block[{t$95$0 = N[(N[(N[(x * y), $MachinePrecision] / N[(z * z + z), $MachinePrecision]), $MachinePrecision] / z), $MachinePrecision]}, If[LessEqual[N[(x * y), $MachinePrecision], -1e+303], N[(N[(y / z), $MachinePrecision] / N[(z * N[(z / x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[N[(x * y), $MachinePrecision], -1e-203], t$95$0, If[LessEqual[N[(x * y), $MachinePrecision], 5e-180], N[(N[(y / z), $MachinePrecision] / N[(N[(z * z + z), $MachinePrecision] / x), $MachinePrecision]), $MachinePrecision], If[LessEqual[N[(x * y), $MachinePrecision], 2e+132], t$95$0, N[(N[(y / z), $MachinePrecision] / N[(z / N[(x / z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]]]]
\frac{x \cdot y}{\left(z \cdot z\right) \cdot \left(z + 1\right)}
\begin{array}{l}
t_0 := \frac{\frac{x \cdot y}{\mathsf{fma}\left(z, z, z\right)}}{z}\\
\mathbf{if}\;x \cdot y \leq -1 \cdot 10^{+303}:\\
\;\;\;\;\frac{\frac{y}{z}}{z \cdot \frac{z}{x}}\\

\mathbf{elif}\;x \cdot y \leq -1 \cdot 10^{-203}:\\
\;\;\;\;t_0\\

\mathbf{elif}\;x \cdot y \leq 5 \cdot 10^{-180}:\\
\;\;\;\;\frac{\frac{y}{z}}{\frac{\mathsf{fma}\left(z, z, z\right)}{x}}\\

\mathbf{elif}\;x \cdot y \leq 2 \cdot 10^{+132}:\\
\;\;\;\;t_0\\

\mathbf{else}:\\
\;\;\;\;\frac{\frac{y}{z}}{\frac{z}{\frac{x}{z}}}\\


\end{array}

Error

Target

Original15.1
Target4.2
Herbie1.4
\[\begin{array}{l} \mathbf{if}\;z < 249.6182814532307:\\ \;\;\;\;\frac{y \cdot \frac{x}{z}}{z + z \cdot z}\\ \mathbf{else}:\\ \;\;\;\;\frac{\frac{\frac{y}{z}}{1 + z} \cdot x}{z}\\ \end{array} \]

Derivation

  1. Split input into 4 regimes
  2. if (*.f64 x y) < -1e303

    1. Initial program 62.0

      \[\frac{x \cdot y}{\left(z \cdot z\right) \cdot \left(z + 1\right)} \]
    2. Simplified18.8

      \[\leadsto \color{blue}{\frac{y}{z} \cdot \frac{x}{\mathsf{fma}\left(z, z, z\right)}} \]
      Proof
      (*.f64 (/.f64 y z) (/.f64 x (fma.f64 z z z))): 0 points increase in error, 0 points decrease in error
      (*.f64 (/.f64 y z) (/.f64 x (fma.f64 z z (Rewrite<= *-lft-identity_binary64 (*.f64 1 z))))): 0 points increase in error, 0 points decrease in error
      (*.f64 (/.f64 y z) (/.f64 x (Rewrite<= fma-def_binary64 (+.f64 (*.f64 z z) (*.f64 1 z))))): 0 points increase in error, 0 points decrease in error
      (*.f64 (/.f64 y z) (/.f64 x (Rewrite<= distribute-rgt-in_binary64 (*.f64 z (+.f64 z 1))))): 1 points increase in error, 1 points decrease in error
      (Rewrite<= times-frac_binary64 (/.f64 (*.f64 y x) (*.f64 z (*.f64 z (+.f64 z 1))))): 73 points increase in error, 20 points decrease in error
      (/.f64 (Rewrite<= *-commutative_binary64 (*.f64 x y)) (*.f64 z (*.f64 z (+.f64 z 1)))): 0 points increase in error, 0 points decrease in error
      (/.f64 (*.f64 x y) (Rewrite<= associate-*l*_binary64 (*.f64 (*.f64 z z) (+.f64 z 1)))): 1 points increase in error, 4 points decrease in error
    3. Applied egg-rr18.8

      \[\leadsto \color{blue}{\frac{\frac{y}{z}}{\frac{\mathsf{fma}\left(z, z, z\right)}{x}}} \]
    4. Taylor expanded in z around inf 18.8

      \[\leadsto \frac{\frac{y}{z}}{\color{blue}{\frac{{z}^{2}}{x}}} \]
    5. Simplified0.7

      \[\leadsto \frac{\frac{y}{z}}{\color{blue}{\frac{z}{\frac{x}{z}}}} \]
      Proof
      (/.f64 z (/.f64 x z)): 0 points increase in error, 0 points decrease in error
      (Rewrite<= associate-/l*_binary64 (/.f64 (*.f64 z z) x)): 61 points increase in error, 24 points decrease in error
      (/.f64 (Rewrite<= unpow2_binary64 (pow.f64 z 2)) x): 0 points increase in error, 0 points decrease in error
    6. Taylor expanded in z around 0 18.8

      \[\leadsto \frac{\frac{y}{z}}{\color{blue}{\frac{{z}^{2}}{x}}} \]
    7. Simplified0.7

      \[\leadsto \frac{\frac{y}{z}}{\color{blue}{\frac{z}{x} \cdot z}} \]
      Proof
      (*.f64 (/.f64 z x) z): 0 points increase in error, 0 points decrease in error
      (Rewrite=> associate-*l/_binary64 (/.f64 (*.f64 z z) x)): 70 points increase in error, 18 points decrease in error
      (/.f64 (Rewrite<= unpow2_binary64 (pow.f64 z 2)) x): 0 points increase in error, 0 points decrease in error

    if -1e303 < (*.f64 x y) < -1e-203 or 5.0000000000000001e-180 < (*.f64 x y) < 1.99999999999999998e132

    1. Initial program 6.2

      \[\frac{x \cdot y}{\left(z \cdot z\right) \cdot \left(z + 1\right)} \]
    2. Simplified5.8

      \[\leadsto \color{blue}{\frac{y}{z} \cdot \frac{x}{\mathsf{fma}\left(z, z, z\right)}} \]
      Proof
      (*.f64 (/.f64 y z) (/.f64 x (fma.f64 z z z))): 0 points increase in error, 0 points decrease in error
      (*.f64 (/.f64 y z) (/.f64 x (fma.f64 z z (Rewrite<= *-lft-identity_binary64 (*.f64 1 z))))): 0 points increase in error, 0 points decrease in error
      (*.f64 (/.f64 y z) (/.f64 x (Rewrite<= fma-def_binary64 (+.f64 (*.f64 z z) (*.f64 1 z))))): 0 points increase in error, 0 points decrease in error
      (*.f64 (/.f64 y z) (/.f64 x (Rewrite<= distribute-rgt-in_binary64 (*.f64 z (+.f64 z 1))))): 1 points increase in error, 1 points decrease in error
      (Rewrite<= times-frac_binary64 (/.f64 (*.f64 y x) (*.f64 z (*.f64 z (+.f64 z 1))))): 73 points increase in error, 20 points decrease in error
      (/.f64 (Rewrite<= *-commutative_binary64 (*.f64 x y)) (*.f64 z (*.f64 z (+.f64 z 1)))): 0 points increase in error, 0 points decrease in error
      (/.f64 (*.f64 x y) (Rewrite<= associate-*l*_binary64 (*.f64 (*.f64 z z) (+.f64 z 1)))): 1 points increase in error, 4 points decrease in error
    3. Applied egg-rr0.9

      \[\leadsto \color{blue}{\frac{\frac{x \cdot y}{\mathsf{fma}\left(z, z, z\right)}}{z}} \]

    if -1e-203 < (*.f64 x y) < 5.0000000000000001e-180

    1. Initial program 18.6

      \[\frac{x \cdot y}{\left(z \cdot z\right) \cdot \left(z + 1\right)} \]
    2. Simplified0.2

      \[\leadsto \color{blue}{\frac{y}{z} \cdot \frac{x}{\mathsf{fma}\left(z, z, z\right)}} \]
      Proof
      (*.f64 (/.f64 y z) (/.f64 x (fma.f64 z z z))): 0 points increase in error, 0 points decrease in error
      (*.f64 (/.f64 y z) (/.f64 x (fma.f64 z z (Rewrite<= *-lft-identity_binary64 (*.f64 1 z))))): 0 points increase in error, 0 points decrease in error
      (*.f64 (/.f64 y z) (/.f64 x (Rewrite<= fma-def_binary64 (+.f64 (*.f64 z z) (*.f64 1 z))))): 0 points increase in error, 0 points decrease in error
      (*.f64 (/.f64 y z) (/.f64 x (Rewrite<= distribute-rgt-in_binary64 (*.f64 z (+.f64 z 1))))): 1 points increase in error, 1 points decrease in error
      (Rewrite<= times-frac_binary64 (/.f64 (*.f64 y x) (*.f64 z (*.f64 z (+.f64 z 1))))): 73 points increase in error, 20 points decrease in error
      (/.f64 (Rewrite<= *-commutative_binary64 (*.f64 x y)) (*.f64 z (*.f64 z (+.f64 z 1)))): 0 points increase in error, 0 points decrease in error
      (/.f64 (*.f64 x y) (Rewrite<= associate-*l*_binary64 (*.f64 (*.f64 z z) (+.f64 z 1)))): 1 points increase in error, 4 points decrease in error
    3. Applied egg-rr0.2

      \[\leadsto \color{blue}{\frac{\frac{y}{z}}{\frac{\mathsf{fma}\left(z, z, z\right)}{x}}} \]

    if 1.99999999999999998e132 < (*.f64 x y)

    1. Initial program 32.2

      \[\frac{x \cdot y}{\left(z \cdot z\right) \cdot \left(z + 1\right)} \]
    2. Simplified12.3

      \[\leadsto \color{blue}{\frac{y}{z} \cdot \frac{x}{\mathsf{fma}\left(z, z, z\right)}} \]
      Proof
      (*.f64 (/.f64 y z) (/.f64 x (fma.f64 z z z))): 0 points increase in error, 0 points decrease in error
      (*.f64 (/.f64 y z) (/.f64 x (fma.f64 z z (Rewrite<= *-lft-identity_binary64 (*.f64 1 z))))): 0 points increase in error, 0 points decrease in error
      (*.f64 (/.f64 y z) (/.f64 x (Rewrite<= fma-def_binary64 (+.f64 (*.f64 z z) (*.f64 1 z))))): 0 points increase in error, 0 points decrease in error
      (*.f64 (/.f64 y z) (/.f64 x (Rewrite<= distribute-rgt-in_binary64 (*.f64 z (+.f64 z 1))))): 1 points increase in error, 1 points decrease in error
      (Rewrite<= times-frac_binary64 (/.f64 (*.f64 y x) (*.f64 z (*.f64 z (+.f64 z 1))))): 73 points increase in error, 20 points decrease in error
      (/.f64 (Rewrite<= *-commutative_binary64 (*.f64 x y)) (*.f64 z (*.f64 z (+.f64 z 1)))): 0 points increase in error, 0 points decrease in error
      (/.f64 (*.f64 x y) (Rewrite<= associate-*l*_binary64 (*.f64 (*.f64 z z) (+.f64 z 1)))): 1 points increase in error, 4 points decrease in error
    3. Applied egg-rr12.3

      \[\leadsto \color{blue}{\frac{\frac{y}{z}}{\frac{\mathsf{fma}\left(z, z, z\right)}{x}}} \]
    4. Taylor expanded in z around inf 17.2

      \[\leadsto \frac{\frac{y}{z}}{\color{blue}{\frac{{z}^{2}}{x}}} \]
    5. Simplified7.4

      \[\leadsto \frac{\frac{y}{z}}{\color{blue}{\frac{z}{\frac{x}{z}}}} \]
      Proof
      (/.f64 z (/.f64 x z)): 0 points increase in error, 0 points decrease in error
      (Rewrite<= associate-/l*_binary64 (/.f64 (*.f64 z z) x)): 61 points increase in error, 24 points decrease in error
      (/.f64 (Rewrite<= unpow2_binary64 (pow.f64 z 2)) x): 0 points increase in error, 0 points decrease in error
  3. Recombined 4 regimes into one program.
  4. Final simplification1.4

    \[\leadsto \begin{array}{l} \mathbf{if}\;x \cdot y \leq -1 \cdot 10^{+303}:\\ \;\;\;\;\frac{\frac{y}{z}}{z \cdot \frac{z}{x}}\\ \mathbf{elif}\;x \cdot y \leq -1 \cdot 10^{-203}:\\ \;\;\;\;\frac{\frac{x \cdot y}{\mathsf{fma}\left(z, z, z\right)}}{z}\\ \mathbf{elif}\;x \cdot y \leq 5 \cdot 10^{-180}:\\ \;\;\;\;\frac{\frac{y}{z}}{\frac{\mathsf{fma}\left(z, z, z\right)}{x}}\\ \mathbf{elif}\;x \cdot y \leq 2 \cdot 10^{+132}:\\ \;\;\;\;\frac{\frac{x \cdot y}{\mathsf{fma}\left(z, z, z\right)}}{z}\\ \mathbf{else}:\\ \;\;\;\;\frac{\frac{y}{z}}{\frac{z}{\frac{x}{z}}}\\ \end{array} \]

Alternatives

Alternative 1
Error1.7
Cost7496
\[\begin{array}{l} \mathbf{if}\;x \cdot y \leq -1 \cdot 10^{+303}:\\ \;\;\;\;\frac{\frac{y}{z}}{z \cdot \frac{z}{x}}\\ \mathbf{elif}\;x \cdot y \leq -2 \cdot 10^{-303}:\\ \;\;\;\;\frac{\frac{x \cdot y}{\mathsf{fma}\left(z, z, z\right)}}{z}\\ \mathbf{elif}\;x \cdot y \leq 5 \cdot 10^{-231}:\\ \;\;\;\;\frac{\frac{y}{z}}{\frac{z}{x}}\\ \mathbf{elif}\;x \cdot y \leq 5 \cdot 10^{+119}:\\ \;\;\;\;\frac{1}{z + 1} \cdot \frac{\frac{x \cdot y}{z}}{z}\\ \mathbf{else}:\\ \;\;\;\;\frac{\frac{y}{z}}{\frac{z}{\frac{x}{z}}}\\ \end{array} \]
Alternative 2
Error1.4
Cost1872
\[\begin{array}{l} t_0 := \frac{1}{z + 1} \cdot \frac{\frac{x \cdot y}{z}}{z}\\ \mathbf{if}\;x \cdot y \leq -1 \cdot 10^{+303}:\\ \;\;\;\;\frac{\frac{y}{z}}{z \cdot \frac{z}{x}}\\ \mathbf{elif}\;x \cdot y \leq -2 \cdot 10^{-303}:\\ \;\;\;\;t_0\\ \mathbf{elif}\;x \cdot y \leq 5 \cdot 10^{-231}:\\ \;\;\;\;\frac{\frac{y}{z}}{\frac{z}{x}}\\ \mathbf{elif}\;x \cdot y \leq 5 \cdot 10^{+119}:\\ \;\;\;\;t_0\\ \mathbf{else}:\\ \;\;\;\;\frac{\frac{y}{z}}{\frac{z}{\frac{x}{z}}}\\ \end{array} \]
Alternative 3
Error3.3
Cost1232
\[\begin{array}{l} t_0 := \frac{y \cdot \frac{x}{z \cdot z}}{z + 1}\\ t_1 := \frac{\frac{y}{z}}{\frac{z}{\frac{x}{z}}}\\ \mathbf{if}\;z \leq -3.25 \cdot 10^{+47}:\\ \;\;\;\;t_1\\ \mathbf{elif}\;z \leq -1 \cdot 10^{-104}:\\ \;\;\;\;t_0\\ \mathbf{elif}\;z \leq 10^{-90}:\\ \;\;\;\;\frac{\frac{x}{z}}{\frac{z}{y}}\\ \mathbf{elif}\;z \leq 1.1369548196907596 \cdot 10^{+44}:\\ \;\;\;\;t_0\\ \mathbf{else}:\\ \;\;\;\;t_1\\ \end{array} \]
Alternative 4
Error3.3
Cost1232
\[\begin{array}{l} t_0 := \frac{y \cdot \frac{x}{z \cdot z}}{z + 1}\\ t_1 := \frac{z}{\frac{x}{z}}\\ \mathbf{if}\;z \leq -3.25 \cdot 10^{+47}:\\ \;\;\;\;\frac{\frac{y}{z}}{t_1}\\ \mathbf{elif}\;z \leq -1 \cdot 10^{-104}:\\ \;\;\;\;t_0\\ \mathbf{elif}\;z \leq 10^{-90}:\\ \;\;\;\;\frac{\frac{x}{z}}{\frac{z}{y}}\\ \mathbf{elif}\;z \leq 10^{+20}:\\ \;\;\;\;t_0\\ \mathbf{else}:\\ \;\;\;\;\frac{1}{z} \cdot \frac{y}{t_1}\\ \end{array} \]
Alternative 5
Error3.3
Cost1232
\[\begin{array}{l} t_0 := \frac{z}{\frac{x}{z}}\\ \mathbf{if}\;z \leq -1.3448661924577893 \cdot 10^{+55}:\\ \;\;\;\;\frac{\frac{y}{z}}{t_0}\\ \mathbf{elif}\;z \leq -1 \cdot 10^{-104}:\\ \;\;\;\;\frac{y}{\left(z + 1\right) \cdot \frac{z \cdot z}{x}}\\ \mathbf{elif}\;z \leq 10^{-90}:\\ \;\;\;\;\frac{\frac{x}{z}}{\frac{z}{y}}\\ \mathbf{elif}\;z \leq 10^{+20}:\\ \;\;\;\;\frac{y \cdot \frac{x}{z \cdot z}}{z + 1}\\ \mathbf{else}:\\ \;\;\;\;\frac{1}{z} \cdot \frac{y}{t_0}\\ \end{array} \]
Alternative 6
Error3.2
Cost1232
\[\begin{array}{l} t_0 := \frac{x \cdot y}{\left(z + 1\right) \cdot \left(z \cdot z\right)}\\ t_1 := \frac{z}{\frac{x}{z}}\\ \mathbf{if}\;z \leq -3.25 \cdot 10^{+47}:\\ \;\;\;\;\frac{\frac{y}{z}}{t_1}\\ \mathbf{elif}\;z \leq -1 \cdot 10^{-140}:\\ \;\;\;\;t_0\\ \mathbf{elif}\;z \leq 10^{-70}:\\ \;\;\;\;\frac{\frac{x}{z}}{\frac{z}{y}}\\ \mathbf{elif}\;z \leq 5.839418904491006 \cdot 10^{+54}:\\ \;\;\;\;t_0\\ \mathbf{else}:\\ \;\;\;\;\frac{1}{z} \cdot \frac{y}{t_1}\\ \end{array} \]
Alternative 7
Error4.6
Cost968
\[\begin{array}{l} \mathbf{if}\;z \leq -1 \cdot 10^{-60}:\\ \;\;\;\;\frac{y}{z \cdot z} \cdot \frac{x}{z + 1}\\ \mathbf{elif}\;z \leq 1:\\ \;\;\;\;\frac{\frac{x}{z}}{\frac{z}{y}}\\ \mathbf{else}:\\ \;\;\;\;\frac{1}{z} \cdot \frac{y}{\frac{z}{\frac{x}{z}}}\\ \end{array} \]
Alternative 8
Error4.4
Cost840
\[\begin{array}{l} t_0 := \frac{\frac{y}{z}}{z \cdot \frac{z}{x}}\\ \mathbf{if}\;z \leq -1:\\ \;\;\;\;t_0\\ \mathbf{elif}\;z \leq 1:\\ \;\;\;\;\frac{\frac{x}{z}}{\frac{z}{y}}\\ \mathbf{else}:\\ \;\;\;\;t_0\\ \end{array} \]
Alternative 9
Error4.1
Cost840
\[\begin{array}{l} t_0 := \frac{\frac{y}{z}}{z \cdot \frac{z}{x}}\\ \mathbf{if}\;z \leq -1:\\ \;\;\;\;t_0\\ \mathbf{elif}\;z \leq 1:\\ \;\;\;\;\frac{x \cdot \left(\frac{y}{z} - y\right)}{z}\\ \mathbf{else}:\\ \;\;\;\;t_0\\ \end{array} \]
Alternative 10
Error4.1
Cost840
\[\begin{array}{l} t_0 := \frac{\frac{y}{z}}{z \cdot \frac{z}{x}}\\ \mathbf{if}\;z \leq -1:\\ \;\;\;\;t_0\\ \mathbf{elif}\;z \leq 1:\\ \;\;\;\;\frac{\frac{y}{z} - y}{\frac{z}{x}}\\ \mathbf{else}:\\ \;\;\;\;t_0\\ \end{array} \]
Alternative 11
Error4.1
Cost840
\[\begin{array}{l} \mathbf{if}\;z \leq -1:\\ \;\;\;\;\frac{\frac{y}{z}}{z \cdot \frac{z}{x}}\\ \mathbf{elif}\;z \leq 1:\\ \;\;\;\;\frac{\frac{y}{z} - y}{\frac{z}{x}}\\ \mathbf{else}:\\ \;\;\;\;\frac{\frac{y}{z}}{\frac{z}{\frac{x}{z}}}\\ \end{array} \]
Alternative 12
Error17.9
Cost712
\[\begin{array}{l} t_0 := \frac{y}{\frac{z \cdot z}{x}}\\ \mathbf{if}\;z \leq -1 \cdot 10^{-104}:\\ \;\;\;\;t_0\\ \mathbf{elif}\;z \leq 10^{-90}:\\ \;\;\;\;\frac{\frac{x}{z}}{\frac{z}{y}}\\ \mathbf{else}:\\ \;\;\;\;t_0\\ \end{array} \]
Alternative 13
Error17.4
Cost712
\[\begin{array}{l} \mathbf{if}\;x \leq -1 \cdot 10^{+45}:\\ \;\;\;\;x \cdot \frac{y}{z \cdot z}\\ \mathbf{elif}\;x \leq -2.2043045098779213 \cdot 10^{-218}:\\ \;\;\;\;\frac{\frac{x}{z}}{\frac{z}{y}}\\ \mathbf{else}:\\ \;\;\;\;\frac{y}{\frac{z}{\frac{x}{z}}}\\ \end{array} \]
Alternative 14
Error17.4
Cost712
\[\begin{array}{l} \mathbf{if}\;x \leq -1 \cdot 10^{+45}:\\ \;\;\;\;x \cdot \frac{y}{z \cdot z}\\ \mathbf{elif}\;x \leq -1.0271701134459973 \cdot 10^{-190}:\\ \;\;\;\;\frac{\frac{x}{z}}{\frac{z}{y}}\\ \mathbf{else}:\\ \;\;\;\;\frac{y}{z \cdot \frac{z}{x}}\\ \end{array} \]
Alternative 15
Error18.7
Cost580
\[\begin{array}{l} \mathbf{if}\;y \leq 10^{+43}:\\ \;\;\;\;\frac{\frac{x}{z}}{\frac{z}{y}}\\ \mathbf{else}:\\ \;\;\;\;\frac{y}{\frac{z}{\frac{x}{z}}}\\ \end{array} \]
Alternative 16
Error43.4
Cost452
\[\begin{array}{l} \mathbf{if}\;y \leq 1.8636723453605865 \cdot 10^{-91}:\\ \;\;\;\;x \cdot \frac{y}{z}\\ \mathbf{else}:\\ \;\;\;\;y \cdot \frac{x}{z}\\ \end{array} \]
Alternative 17
Error43.1
Cost452
\[\begin{array}{l} \mathbf{if}\;y \leq 1.8636723453605865 \cdot 10^{-91}:\\ \;\;\;\;x \cdot \frac{y}{z}\\ \mathbf{else}:\\ \;\;\;\;\frac{y}{\frac{z}{x}}\\ \end{array} \]
Alternative 18
Error42.7
Cost452
\[\begin{array}{l} \mathbf{if}\;y \leq 1.8636723453605865 \cdot 10^{-91}:\\ \;\;\;\;\frac{x}{\frac{z}{y}}\\ \mathbf{else}:\\ \;\;\;\;\frac{y}{\frac{z}{x}}\\ \end{array} \]
Alternative 19
Error21.8
Cost448
\[\frac{\frac{x}{z}}{\frac{z}{y}} \]
Alternative 20
Error48.8
Cost320
\[\frac{x \cdot y}{z} \]
Alternative 21
Error46.1
Cost320
\[y \cdot \frac{x}{z} \]

Error

Reproduce

herbie shell --seed 2022291 
(FPCore (x y z)
  :name "Statistics.Distribution.Beta:$cvariance from math-functions-0.1.5.2"
  :precision binary64

  :herbie-target
  (if (< z 249.6182814532307) (/ (* y (/ x z)) (+ z (* z z))) (/ (* (/ (/ y z) (+ 1.0 z)) x) z))

  (/ (* x y) (* (* z z) (+ z 1.0))))