
(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 5 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 (- 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 83.7%
remove-double-neg83.7%
distribute-frac-neg283.7%
distribute-frac-neg83.7%
distribute-rgt-neg-in83.7%
associate-/l*97.2%
distribute-frac-neg97.2%
distribute-frac-neg297.2%
remove-double-neg97.2%
div-sub97.2%
*-inverses97.2%
Simplified97.2%
(FPCore (x y z) :precision binary64 (if (<= y -23000000.0) x (if (<= y 2.6e-17) (* z (/ x (- y))) x)))
double code(double x, double y, double z) {
double tmp;
if (y <= -23000000.0) {
tmp = x;
} else if (y <= 2.6e-17) {
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 <= (-23000000.0d0)) then
tmp = x
else if (y <= 2.6d-17) 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 <= -23000000.0) {
tmp = x;
} else if (y <= 2.6e-17) {
tmp = z * (x / -y);
} else {
tmp = x;
}
return tmp;
}
def code(x, y, z): tmp = 0 if y <= -23000000.0: tmp = x elif y <= 2.6e-17: tmp = z * (x / -y) else: tmp = x return tmp
function code(x, y, z) tmp = 0.0 if (y <= -23000000.0) tmp = x; elseif (y <= 2.6e-17) tmp = Float64(z * Float64(x / Float64(-y))); else tmp = x; end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if (y <= -23000000.0) tmp = x; elseif (y <= 2.6e-17) tmp = z * (x / -y); else tmp = x; end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[y, -23000000.0], x, If[LessEqual[y, 2.6e-17], N[(z * N[(x / (-y)), $MachinePrecision]), $MachinePrecision], x]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -23000000:\\
\;\;\;\;x\\
\mathbf{elif}\;y \leq 2.6 \cdot 10^{-17}:\\
\;\;\;\;z \cdot \frac{x}{-y}\\
\mathbf{else}:\\
\;\;\;\;x\\
\end{array}
\end{array}
if y < -2.3e7 or 2.60000000000000003e-17 < y Initial program 76.0%
remove-double-neg76.0%
distribute-frac-neg276.0%
distribute-frac-neg76.0%
distribute-rgt-neg-in76.0%
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 77.9%
if -2.3e7 < y < 2.60000000000000003e-17Initial program 92.6%
remove-double-neg92.6%
distribute-frac-neg292.6%
distribute-frac-neg92.6%
distribute-rgt-neg-in92.6%
associate-/l*94.1%
distribute-frac-neg94.1%
distribute-frac-neg294.1%
remove-double-neg94.1%
div-sub94.2%
*-inverses94.2%
Simplified94.2%
Taylor expanded in z around inf 73.5%
mul-1-neg73.5%
distribute-frac-neg273.5%
*-commutative73.5%
associate-/l*73.6%
Simplified73.6%
(FPCore (x y z) :precision binary64 (if (<= y -66000000.0) x (if (<= y 5.6e-9) (* x (/ z (- y))) x)))
double code(double x, double y, double z) {
double tmp;
if (y <= -66000000.0) {
tmp = x;
} else if (y <= 5.6e-9) {
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 <= (-66000000.0d0)) then
tmp = x
else if (y <= 5.6d-9) 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 <= -66000000.0) {
tmp = x;
} else if (y <= 5.6e-9) {
tmp = x * (z / -y);
} else {
tmp = x;
}
return tmp;
}
def code(x, y, z): tmp = 0 if y <= -66000000.0: tmp = x elif y <= 5.6e-9: tmp = x * (z / -y) else: tmp = x return tmp
function code(x, y, z) tmp = 0.0 if (y <= -66000000.0) tmp = x; elseif (y <= 5.6e-9) 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 <= -66000000.0) tmp = x; elseif (y <= 5.6e-9) tmp = x * (z / -y); else tmp = x; end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[y, -66000000.0], x, If[LessEqual[y, 5.6e-9], N[(x * N[(z / (-y)), $MachinePrecision]), $MachinePrecision], x]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -66000000:\\
\;\;\;\;x\\
\mathbf{elif}\;y \leq 5.6 \cdot 10^{-9}:\\
\;\;\;\;x \cdot \frac{z}{-y}\\
\mathbf{else}:\\
\;\;\;\;x\\
\end{array}
\end{array}
if y < -6.6e7 or 5.59999999999999969e-9 < y Initial program 76.0%
remove-double-neg76.0%
distribute-frac-neg276.0%
distribute-frac-neg76.0%
distribute-rgt-neg-in76.0%
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 77.9%
if -6.6e7 < y < 5.59999999999999969e-9Initial program 92.6%
remove-double-neg92.6%
distribute-frac-neg292.6%
distribute-frac-neg92.6%
distribute-rgt-neg-in92.6%
associate-/l*94.1%
distribute-frac-neg94.1%
distribute-frac-neg294.1%
remove-double-neg94.1%
div-sub94.2%
*-inverses94.2%
Simplified94.2%
Taylor expanded in z around inf 73.5%
mul-1-neg73.5%
distribute-frac-neg273.5%
associate-*r/71.9%
Simplified71.9%
(FPCore (x y z) :precision binary64 (if (<= x 1e-20) x (* y (/ x y))))
double code(double x, double y, double z) {
double tmp;
if (x <= 1e-20) {
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 <= 1d-20) 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 <= 1e-20) {
tmp = x;
} else {
tmp = y * (x / y);
}
return tmp;
}
def code(x, y, z): tmp = 0 if x <= 1e-20: tmp = x else: tmp = y * (x / y) return tmp
function code(x, y, z) tmp = 0.0 if (x <= 1e-20) 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 <= 1e-20) tmp = x; else tmp = y * (x / y); end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[x, 1e-20], x, N[(y * N[(x / y), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq 10^{-20}:\\
\;\;\;\;x\\
\mathbf{else}:\\
\;\;\;\;y \cdot \frac{x}{y}\\
\end{array}
\end{array}
if x < 9.99999999999999945e-21Initial program 85.5%
remove-double-neg85.5%
distribute-frac-neg285.5%
distribute-frac-neg85.5%
distribute-rgt-neg-in85.5%
associate-/l*96.4%
distribute-frac-neg96.4%
distribute-frac-neg296.4%
remove-double-neg96.4%
div-sub96.4%
*-inverses96.4%
Simplified96.4%
Taylor expanded in z around 0 51.2%
if 9.99999999999999945e-21 < x Initial program 78.0%
Taylor expanded in y around inf 40.1%
*-commutative40.1%
associate-/l*62.9%
Applied egg-rr62.9%
(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 83.7%
remove-double-neg83.7%
distribute-frac-neg283.7%
distribute-frac-neg83.7%
distribute-rgt-neg-in83.7%
associate-/l*97.2%
distribute-frac-neg97.2%
distribute-frac-neg297.2%
remove-double-neg97.2%
div-sub97.2%
*-inverses97.2%
Simplified97.2%
Taylor expanded in z around 0 52.7%
(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 2024165
(FPCore (x y z)
:name "Diagrams.Backend.Cairo.Internal:setTexture from diagrams-cairo-1.3.0.3"
:precision binary64
:alt
(! :herbie-platform default (if (< z -206020233192173900000000000000000000000000000000000000000000000000000000000000000000000000000000000000000) (- x (/ (* z x) y)) (if (< z 1693976601382852600000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000) (/ x (/ y (- y z))) (* (- y z) (/ x y)))))
(/ (* x (- y z)) y))