
(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 6 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 82.3%
associate-*l/85.1%
Simplified85.1%
associate-/r/96.3%
Applied egg-rr96.3%
Final simplification96.3%
(FPCore (x y z) :precision binary64 (if (or (<= z -1020000000.0) (not (<= z 720000000000.0))) (* x (/ (- z) y)) x))
double code(double x, double y, double z) {
double tmp;
if ((z <= -1020000000.0) || !(z <= 720000000000.0)) {
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 ((z <= (-1020000000.0d0)) .or. (.not. (z <= 720000000000.0d0))) 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 ((z <= -1020000000.0) || !(z <= 720000000000.0)) {
tmp = x * (-z / y);
} else {
tmp = x;
}
return tmp;
}
def code(x, y, z): tmp = 0 if (z <= -1020000000.0) or not (z <= 720000000000.0): tmp = x * (-z / y) else: tmp = x return tmp
function code(x, y, z) tmp = 0.0 if ((z <= -1020000000.0) || !(z <= 720000000000.0)) tmp = Float64(x * Float64(Float64(-z) / y)); else tmp = x; end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((z <= -1020000000.0) || ~((z <= 720000000000.0))) tmp = x * (-z / y); else tmp = x; end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[z, -1020000000.0], N[Not[LessEqual[z, 720000000000.0]], $MachinePrecision]], N[(x * N[((-z) / y), $MachinePrecision]), $MachinePrecision], x]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z \leq -1020000000 \lor \neg \left(z \leq 720000000000\right):\\
\;\;\;\;x \cdot \frac{-z}{y}\\
\mathbf{else}:\\
\;\;\;\;x\\
\end{array}
\end{array}
if z < -1.02e9 or 7.2e11 < z Initial program 89.1%
*-commutative89.1%
associate-*l/92.0%
*-commutative92.0%
div-sub92.0%
*-inverses92.0%
Simplified92.0%
Taylor expanded in z around inf 76.0%
associate-*r/76.0%
mul-1-neg76.0%
distribute-rgt-neg-out76.0%
associate-*r/71.7%
Simplified71.7%
if -1.02e9 < z < 7.2e11Initial program 75.3%
*-commutative75.3%
associate-*l/99.9%
*-commutative99.9%
div-sub99.9%
*-inverses99.9%
Simplified99.9%
Taylor expanded in z around 0 78.7%
Final simplification75.1%
(FPCore (x y z) :precision binary64 (if (or (<= z -55000.0) (not (<= z 25000000000.0))) (* z (/ (- x) y)) x))
double code(double x, double y, double z) {
double tmp;
if ((z <= -55000.0) || !(z <= 25000000000.0)) {
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 ((z <= (-55000.0d0)) .or. (.not. (z <= 25000000000.0d0))) 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 ((z <= -55000.0) || !(z <= 25000000000.0)) {
tmp = z * (-x / y);
} else {
tmp = x;
}
return tmp;
}
def code(x, y, z): tmp = 0 if (z <= -55000.0) or not (z <= 25000000000.0): tmp = z * (-x / y) else: tmp = x return tmp
function code(x, y, z) tmp = 0.0 if ((z <= -55000.0) || !(z <= 25000000000.0)) 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 ((z <= -55000.0) || ~((z <= 25000000000.0))) tmp = z * (-x / y); else tmp = x; end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[z, -55000.0], N[Not[LessEqual[z, 25000000000.0]], $MachinePrecision]], N[(z * N[((-x) / y), $MachinePrecision]), $MachinePrecision], x]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z \leq -55000 \lor \neg \left(z \leq 25000000000\right):\\
\;\;\;\;z \cdot \frac{-x}{y}\\
\mathbf{else}:\\
\;\;\;\;x\\
\end{array}
\end{array}
if z < -55000 or 2.5e10 < z Initial program 89.1%
*-commutative89.1%
associate-*l/92.0%
*-commutative92.0%
div-sub92.0%
*-inverses92.0%
Simplified92.0%
Taylor expanded in z around inf 76.0%
mul-1-neg76.0%
*-commutative76.0%
associate-*r/77.1%
distribute-lft-neg-out77.1%
Simplified77.1%
if -55000 < z < 2.5e10Initial program 75.3%
*-commutative75.3%
associate-*l/99.9%
*-commutative99.9%
div-sub99.9%
*-inverses99.9%
Simplified99.9%
Taylor expanded in z around 0 78.7%
Final simplification77.9%
(FPCore (x y z) :precision binary64 (if (<= z -23500.0) (/ (* x (- z)) y) (if (<= z 1000000000000.0) x (* z (/ (- x) y)))))
double code(double x, double y, double z) {
double tmp;
if (z <= -23500.0) {
tmp = (x * -z) / y;
} else if (z <= 1000000000000.0) {
tmp = x;
} else {
tmp = 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 <= (-23500.0d0)) then
tmp = (x * -z) / y
else if (z <= 1000000000000.0d0) then
tmp = x
else
tmp = z * (-x / y)
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if (z <= -23500.0) {
tmp = (x * -z) / y;
} else if (z <= 1000000000000.0) {
tmp = x;
} else {
tmp = z * (-x / y);
}
return tmp;
}
def code(x, y, z): tmp = 0 if z <= -23500.0: tmp = (x * -z) / y elif z <= 1000000000000.0: tmp = x else: tmp = z * (-x / y) return tmp
function code(x, y, z) tmp = 0.0 if (z <= -23500.0) tmp = Float64(Float64(x * Float64(-z)) / y); elseif (z <= 1000000000000.0) tmp = x; else tmp = Float64(z * Float64(Float64(-x) / y)); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if (z <= -23500.0) tmp = (x * -z) / y; elseif (z <= 1000000000000.0) tmp = x; else tmp = z * (-x / y); end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[z, -23500.0], N[(N[(x * (-z)), $MachinePrecision] / y), $MachinePrecision], If[LessEqual[z, 1000000000000.0], x, N[(z * N[((-x) / y), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z \leq -23500:\\
\;\;\;\;\frac{x \cdot \left(-z\right)}{y}\\
\mathbf{elif}\;z \leq 1000000000000:\\
\;\;\;\;x\\
\mathbf{else}:\\
\;\;\;\;z \cdot \frac{-x}{y}\\
\end{array}
\end{array}
if z < -23500Initial program 87.7%
Taylor expanded in y around 0 74.1%
mul-1-neg74.1%
distribute-rgt-neg-out74.1%
Simplified74.1%
if -23500 < z < 1e12Initial program 75.3%
*-commutative75.3%
associate-*l/99.9%
*-commutative99.9%
div-sub99.9%
*-inverses99.9%
Simplified99.9%
Taylor expanded in z around 0 78.7%
if 1e12 < z Initial program 90.7%
*-commutative90.7%
associate-*l/90.5%
*-commutative90.5%
div-sub90.5%
*-inverses90.5%
Simplified90.5%
Taylor expanded in z around inf 78.1%
mul-1-neg78.1%
*-commutative78.1%
associate-*r/82.7%
distribute-lft-neg-out82.7%
Simplified82.7%
Final simplification78.4%
(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 82.3%
*-commutative82.3%
associate-*l/95.8%
*-commutative95.8%
div-sub95.9%
*-inverses95.9%
Simplified95.9%
Final simplification95.9%
(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 82.3%
*-commutative82.3%
associate-*l/95.8%
*-commutative95.8%
div-sub95.9%
*-inverses95.9%
Simplified95.9%
Taylor expanded in z around 0 49.8%
Final simplification49.8%
(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 2023334
(FPCore (x y z)
:name "Diagrams.Backend.Cairo.Internal:setTexture from diagrams-cairo-1.3.0.3"
:precision binary64
:herbie-target
(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))