
(FPCore (x y z) :precision binary64 (/ (* x (- y z)) y))
double code(double x, double y, double z) {
return (x * (y - z)) / y;
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
code = (x * (y - z)) / y
end function
public static double code(double x, double y, double z) {
return (x * (y - z)) / y;
}
def code(x, y, z): return (x * (y - z)) / y
function code(x, y, z) return Float64(Float64(x * Float64(y - z)) / y) end
function tmp = code(x, y, z) tmp = (x * (y - z)) / y; end
code[x_, y_, z_] := N[(N[(x * N[(y - z), $MachinePrecision]), $MachinePrecision] / y), $MachinePrecision]
\begin{array}{l}
\\
\frac{x \cdot \left(y - z\right)}{y}
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 8 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x y z) :precision binary64 (/ (* x (- y z)) y))
double code(double x, double y, double z) {
return (x * (y - z)) / y;
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
code = (x * (y - z)) / y
end function
public static double code(double x, double y, double z) {
return (x * (y - z)) / y;
}
def code(x, y, z): return (x * (y - z)) / y
function code(x, y, z) return Float64(Float64(x * Float64(y - z)) / y) end
function tmp = code(x, y, z) tmp = (x * (y - z)) / y; end
code[x_, y_, z_] := N[(N[(x * N[(y - z), $MachinePrecision]), $MachinePrecision] / y), $MachinePrecision]
\begin{array}{l}
\\
\frac{x \cdot \left(y - z\right)}{y}
\end{array}
(FPCore (x y z) :precision binary64 (/ x (/ y (- y z))))
double code(double x, double y, double z) {
return x / (y / (y - z));
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
code = x / (y / (y - z))
end function
public static double code(double x, double y, double z) {
return x / (y / (y - z));
}
def code(x, y, z): return x / (y / (y - z))
function code(x, y, z) return Float64(x / Float64(y / Float64(y - z))) end
function tmp = code(x, y, z) tmp = x / (y / (y - z)); end
code[x_, y_, z_] := N[(x / N[(y / N[(y - z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\frac{x}{\frac{y}{y - z}}
\end{array}
Initial program 86.1%
associate-/l*96.5%
add-sqr-sqrt50.1%
associate-*l*50.1%
Applied egg-rr50.1%
associate-*r*50.1%
add-sqr-sqrt96.5%
clear-num96.4%
un-div-inv96.7%
Applied egg-rr96.7%
(FPCore (x y z) :precision binary64 (if (<= y -2.5e-18) x (if (<= y 4.9e-21) (/ (* x (- z)) y) x)))
double code(double x, double y, double z) {
double tmp;
if (y <= -2.5e-18) {
tmp = x;
} else if (y <= 4.9e-21) {
tmp = (x * -z) / y;
} else {
tmp = x;
}
return tmp;
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
real(8) :: tmp
if (y <= (-2.5d-18)) then
tmp = x
else if (y <= 4.9d-21) then
tmp = (x * -z) / y
else
tmp = x
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if (y <= -2.5e-18) {
tmp = x;
} else if (y <= 4.9e-21) {
tmp = (x * -z) / y;
} else {
tmp = x;
}
return tmp;
}
def code(x, y, z): tmp = 0 if y <= -2.5e-18: tmp = x elif y <= 4.9e-21: tmp = (x * -z) / y else: tmp = x return tmp
function code(x, y, z) tmp = 0.0 if (y <= -2.5e-18) tmp = x; elseif (y <= 4.9e-21) tmp = Float64(Float64(x * Float64(-z)) / y); else tmp = x; end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if (y <= -2.5e-18) tmp = x; elseif (y <= 4.9e-21) tmp = (x * -z) / y; else tmp = x; end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[y, -2.5e-18], x, If[LessEqual[y, 4.9e-21], N[(N[(x * (-z)), $MachinePrecision] / y), $MachinePrecision], x]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -2.5 \cdot 10^{-18}:\\
\;\;\;\;x\\
\mathbf{elif}\;y \leq 4.9 \cdot 10^{-21}:\\
\;\;\;\;\frac{x \cdot \left(-z\right)}{y}\\
\mathbf{else}:\\
\;\;\;\;x\\
\end{array}
\end{array}
if y < -2.50000000000000018e-18 or 4.9000000000000002e-21 < y Initial program 78.5%
remove-double-neg78.5%
distribute-frac-neg278.5%
distribute-frac-neg78.5%
distribute-rgt-neg-in78.5%
associate-/l*99.9%
distribute-frac-neg99.9%
distribute-frac-neg299.9%
remove-double-neg99.9%
div-sub99.9%
*-inverses99.9%
Simplified99.9%
Taylor expanded in z around 0 76.8%
if -2.50000000000000018e-18 < y < 4.9000000000000002e-21Initial program 94.0%
Taylor expanded in y around 0 76.1%
associate-*r*76.1%
mul-1-neg76.1%
Simplified76.1%
Final simplification76.4%
(FPCore (x y z) :precision binary64 (if (<= y -1.75e-17) x (if (<= y 1.86e-19) (* z (/ (- x) y)) x)))
double code(double x, double y, double z) {
double tmp;
if (y <= -1.75e-17) {
tmp = x;
} else if (y <= 1.86e-19) {
tmp = z * (-x / y);
} else {
tmp = x;
}
return tmp;
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
real(8) :: tmp
if (y <= (-1.75d-17)) then
tmp = x
else if (y <= 1.86d-19) then
tmp = z * (-x / y)
else
tmp = x
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if (y <= -1.75e-17) {
tmp = x;
} else if (y <= 1.86e-19) {
tmp = z * (-x / y);
} else {
tmp = x;
}
return tmp;
}
def code(x, y, z): tmp = 0 if y <= -1.75e-17: tmp = x elif y <= 1.86e-19: tmp = z * (-x / y) else: tmp = x return tmp
function code(x, y, z) tmp = 0.0 if (y <= -1.75e-17) tmp = x; elseif (y <= 1.86e-19) tmp = Float64(z * Float64(Float64(-x) / y)); else tmp = x; end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if (y <= -1.75e-17) tmp = x; elseif (y <= 1.86e-19) tmp = z * (-x / y); else tmp = x; end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[y, -1.75e-17], x, If[LessEqual[y, 1.86e-19], N[(z * N[((-x) / y), $MachinePrecision]), $MachinePrecision], x]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -1.75 \cdot 10^{-17}:\\
\;\;\;\;x\\
\mathbf{elif}\;y \leq 1.86 \cdot 10^{-19}:\\
\;\;\;\;z \cdot \frac{-x}{y}\\
\mathbf{else}:\\
\;\;\;\;x\\
\end{array}
\end{array}
if y < -1.7500000000000001e-17 or 1.8600000000000001e-19 < y Initial program 78.5%
remove-double-neg78.5%
distribute-frac-neg278.5%
distribute-frac-neg78.5%
distribute-rgt-neg-in78.5%
associate-/l*99.9%
distribute-frac-neg99.9%
distribute-frac-neg299.9%
remove-double-neg99.9%
div-sub99.9%
*-inverses99.9%
Simplified99.9%
Taylor expanded in z around 0 76.8%
if -1.7500000000000001e-17 < y < 1.8600000000000001e-19Initial program 94.0%
remove-double-neg94.0%
distribute-frac-neg294.0%
distribute-frac-neg94.0%
distribute-rgt-neg-in94.0%
associate-/l*93.0%
distribute-frac-neg93.0%
distribute-frac-neg293.0%
remove-double-neg93.0%
div-sub93.0%
*-inverses93.0%
Simplified93.0%
Taylor expanded in z around inf 76.1%
associate-*l/71.3%
associate-*l*71.3%
*-commutative71.3%
associate-*r/71.3%
mul-1-neg71.3%
Simplified71.3%
(FPCore (x y z) :precision binary64 (if (<= y -2.9e-17) x (if (<= y 8.6e-21) (* x (/ z (- y))) x)))
double code(double x, double y, double z) {
double tmp;
if (y <= -2.9e-17) {
tmp = x;
} else if (y <= 8.6e-21) {
tmp = x * (z / -y);
} else {
tmp = x;
}
return tmp;
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
real(8) :: tmp
if (y <= (-2.9d-17)) then
tmp = x
else if (y <= 8.6d-21) then
tmp = x * (z / -y)
else
tmp = x
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if (y <= -2.9e-17) {
tmp = x;
} else if (y <= 8.6e-21) {
tmp = x * (z / -y);
} else {
tmp = x;
}
return tmp;
}
def code(x, y, z): tmp = 0 if y <= -2.9e-17: tmp = x elif y <= 8.6e-21: tmp = x * (z / -y) else: tmp = x return tmp
function code(x, y, z) tmp = 0.0 if (y <= -2.9e-17) tmp = x; elseif (y <= 8.6e-21) tmp = Float64(x * Float64(z / Float64(-y))); else tmp = x; end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if (y <= -2.9e-17) tmp = x; elseif (y <= 8.6e-21) tmp = x * (z / -y); else tmp = x; end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[y, -2.9e-17], x, If[LessEqual[y, 8.6e-21], N[(x * N[(z / (-y)), $MachinePrecision]), $MachinePrecision], x]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -2.9 \cdot 10^{-17}:\\
\;\;\;\;x\\
\mathbf{elif}\;y \leq 8.6 \cdot 10^{-21}:\\
\;\;\;\;x \cdot \frac{z}{-y}\\
\mathbf{else}:\\
\;\;\;\;x\\
\end{array}
\end{array}
if y < -2.9000000000000003e-17 or 8.5999999999999996e-21 < y Initial program 78.5%
remove-double-neg78.5%
distribute-frac-neg278.5%
distribute-frac-neg78.5%
distribute-rgt-neg-in78.5%
associate-/l*99.9%
distribute-frac-neg99.9%
distribute-frac-neg299.9%
remove-double-neg99.9%
div-sub99.9%
*-inverses99.9%
Simplified99.9%
Taylor expanded in z around 0 76.8%
if -2.9000000000000003e-17 < y < 8.5999999999999996e-21Initial program 94.0%
remove-double-neg94.0%
distribute-frac-neg294.0%
distribute-frac-neg94.0%
distribute-rgt-neg-in94.0%
associate-/l*93.0%
distribute-frac-neg93.0%
distribute-frac-neg293.0%
remove-double-neg93.0%
div-sub93.0%
*-inverses93.0%
Simplified93.0%
Taylor expanded in z around inf 70.6%
mul-1-neg70.6%
distribute-frac-neg270.6%
Simplified70.6%
(FPCore (x y z) :precision binary64 (if (<= x 1e+73) x (/ y (/ y x))))
double code(double x, double y, double z) {
double tmp;
if (x <= 1e+73) {
tmp = x;
} else {
tmp = y / (y / x);
}
return tmp;
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
real(8) :: tmp
if (x <= 1d+73) then
tmp = x
else
tmp = y / (y / x)
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if (x <= 1e+73) {
tmp = x;
} else {
tmp = y / (y / x);
}
return tmp;
}
def code(x, y, z): tmp = 0 if x <= 1e+73: tmp = x else: tmp = y / (y / x) return tmp
function code(x, y, z) tmp = 0.0 if (x <= 1e+73) tmp = x; else tmp = Float64(y / Float64(y / x)); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if (x <= 1e+73) tmp = x; else tmp = y / (y / x); end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[x, 1e+73], x, N[(y / N[(y / x), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq 10^{+73}:\\
\;\;\;\;x\\
\mathbf{else}:\\
\;\;\;\;\frac{y}{\frac{y}{x}}\\
\end{array}
\end{array}
if x < 9.99999999999999983e72Initial program 88.9%
remove-double-neg88.9%
distribute-frac-neg288.9%
distribute-frac-neg88.9%
distribute-rgt-neg-in88.9%
associate-/l*95.9%
distribute-frac-neg95.9%
distribute-frac-neg295.9%
remove-double-neg95.9%
div-sub95.9%
*-inverses95.9%
Simplified95.9%
Taylor expanded in z around 0 52.3%
if 9.99999999999999983e72 < x Initial program 71.3%
Taylor expanded in y around inf 22.2%
*-commutative22.2%
associate-/l*40.2%
Applied egg-rr40.2%
clear-num40.1%
un-div-inv40.2%
Applied egg-rr40.2%
(FPCore (x y z) :precision binary64 (if (<= x 2.5e+67) x (* y (/ x y))))
double code(double x, double y, double z) {
double tmp;
if (x <= 2.5e+67) {
tmp = x;
} else {
tmp = y * (x / y);
}
return tmp;
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
real(8) :: tmp
if (x <= 2.5d+67) then
tmp = x
else
tmp = y * (x / y)
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if (x <= 2.5e+67) {
tmp = x;
} else {
tmp = y * (x / y);
}
return tmp;
}
def code(x, y, z): tmp = 0 if x <= 2.5e+67: tmp = x else: tmp = y * (x / y) return tmp
function code(x, y, z) tmp = 0.0 if (x <= 2.5e+67) tmp = x; else tmp = Float64(y * Float64(x / y)); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if (x <= 2.5e+67) tmp = x; else tmp = y * (x / y); end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[x, 2.5e+67], x, N[(y * N[(x / y), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq 2.5 \cdot 10^{+67}:\\
\;\;\;\;x\\
\mathbf{else}:\\
\;\;\;\;y \cdot \frac{x}{y}\\
\end{array}
\end{array}
if x < 2.49999999999999988e67Initial program 88.9%
remove-double-neg88.9%
distribute-frac-neg288.9%
distribute-frac-neg88.9%
distribute-rgt-neg-in88.9%
associate-/l*95.9%
distribute-frac-neg95.9%
distribute-frac-neg295.9%
remove-double-neg95.9%
div-sub95.9%
*-inverses95.9%
Simplified95.9%
Taylor expanded in z around 0 52.0%
if 2.49999999999999988e67 < x Initial program 72.0%
Taylor expanded in y around inf 24.0%
*-commutative24.0%
associate-/l*41.6%
Applied egg-rr41.6%
(FPCore (x y z) :precision binary64 (* x (- 1.0 (/ z y))))
double code(double x, double y, double z) {
return x * (1.0 - (z / y));
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
code = x * (1.0d0 - (z / y))
end function
public static double code(double x, double y, double z) {
return x * (1.0 - (z / y));
}
def code(x, y, z): return x * (1.0 - (z / y))
function code(x, y, z) return Float64(x * Float64(1.0 - Float64(z / y))) end
function tmp = code(x, y, z) tmp = x * (1.0 - (z / y)); end
code[x_, y_, z_] := N[(x * N[(1.0 - N[(z / y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x \cdot \left(1 - \frac{z}{y}\right)
\end{array}
Initial program 86.1%
remove-double-neg86.1%
distribute-frac-neg286.1%
distribute-frac-neg86.1%
distribute-rgt-neg-in86.1%
associate-/l*96.5%
distribute-frac-neg96.5%
distribute-frac-neg296.5%
remove-double-neg96.5%
div-sub96.5%
*-inverses96.5%
Simplified96.5%
(FPCore (x y z) :precision binary64 x)
double code(double x, double y, double z) {
return x;
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
code = x
end function
public static double code(double x, double y, double z) {
return x;
}
def code(x, y, z): return x
function code(x, y, z) return x end
function tmp = code(x, y, z) tmp = x; end
code[x_, y_, z_] := x
\begin{array}{l}
\\
x
\end{array}
Initial program 86.1%
remove-double-neg86.1%
distribute-frac-neg286.1%
distribute-frac-neg86.1%
distribute-rgt-neg-in86.1%
associate-/l*96.5%
distribute-frac-neg96.5%
distribute-frac-neg296.5%
remove-double-neg96.5%
div-sub96.5%
*-inverses96.5%
Simplified96.5%
Taylor expanded in z around 0 50.6%
(FPCore (x y z) :precision binary64 (if (< z -2.060202331921739e+104) (- x (/ (* z x) y)) (if (< z 1.6939766013828526e+213) (/ x (/ y (- y z))) (* (- y z) (/ x y)))))
double code(double x, double y, double z) {
double tmp;
if (z < -2.060202331921739e+104) {
tmp = x - ((z * x) / y);
} else if (z < 1.6939766013828526e+213) {
tmp = x / (y / (y - z));
} else {
tmp = (y - z) * (x / y);
}
return tmp;
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
real(8) :: tmp
if (z < (-2.060202331921739d+104)) then
tmp = x - ((z * x) / y)
else if (z < 1.6939766013828526d+213) then
tmp = x / (y / (y - z))
else
tmp = (y - z) * (x / y)
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if (z < -2.060202331921739e+104) {
tmp = x - ((z * x) / y);
} else if (z < 1.6939766013828526e+213) {
tmp = x / (y / (y - z));
} else {
tmp = (y - z) * (x / y);
}
return tmp;
}
def code(x, y, z): tmp = 0 if z < -2.060202331921739e+104: tmp = x - ((z * x) / y) elif z < 1.6939766013828526e+213: tmp = x / (y / (y - z)) else: tmp = (y - z) * (x / y) return tmp
function code(x, y, z) tmp = 0.0 if (z < -2.060202331921739e+104) tmp = Float64(x - Float64(Float64(z * x) / y)); elseif (z < 1.6939766013828526e+213) tmp = Float64(x / Float64(y / Float64(y - z))); else tmp = Float64(Float64(y - z) * Float64(x / y)); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if (z < -2.060202331921739e+104) tmp = x - ((z * x) / y); elseif (z < 1.6939766013828526e+213) tmp = x / (y / (y - z)); else tmp = (y - z) * (x / y); end tmp_2 = tmp; end
code[x_, y_, z_] := If[Less[z, -2.060202331921739e+104], N[(x - N[(N[(z * x), $MachinePrecision] / y), $MachinePrecision]), $MachinePrecision], If[Less[z, 1.6939766013828526e+213], N[(x / N[(y / N[(y - z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(N[(y - z), $MachinePrecision] * N[(x / y), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z < -2.060202331921739 \cdot 10^{+104}:\\
\;\;\;\;x - \frac{z \cdot x}{y}\\
\mathbf{elif}\;z < 1.6939766013828526 \cdot 10^{+213}:\\
\;\;\;\;\frac{x}{\frac{y}{y - z}}\\
\mathbf{else}:\\
\;\;\;\;\left(y - z\right) \cdot \frac{x}{y}\\
\end{array}
\end{array}
herbie shell --seed 2024085
(FPCore (x y z)
:name "Diagrams.Backend.Cairo.Internal:setTexture from diagrams-cairo-1.3.0.3"
:precision binary64
:alt
(if (< z -2.060202331921739e+104) (- x (/ (* z x) y)) (if (< z 1.6939766013828526e+213) (/ x (/ y (- y z))) (* (- y z) (/ x y))))
(/ (* x (- y z)) y))