
(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 4 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 (* (/ (- y z) y) x))
double code(double x, double y, double z) {
return ((y - z) / y) * x;
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
code = ((y - z) / y) * x
end function
public static double code(double x, double y, double z) {
return ((y - z) / y) * x;
}
def code(x, y, z): return ((y - z) / y) * x
function code(x, y, z) return Float64(Float64(Float64(y - z) / y) * x) end
function tmp = code(x, y, z) tmp = ((y - z) / y) * x; end
code[x_, y_, z_] := N[(N[(N[(y - z), $MachinePrecision] / y), $MachinePrecision] * x), $MachinePrecision]
\begin{array}{l}
\\
\frac{y - z}{y} \cdot x
\end{array}
Initial program 83.0%
Applied rewrites97.3%
(FPCore (x y z) :precision binary64 (if (or (<= z -4.7e+54) (not (<= z 2.4e+45))) (* (/ (- x) y) z) (* 1.0 x)))
double code(double x, double y, double z) {
double tmp;
if ((z <= -4.7e+54) || !(z <= 2.4e+45)) {
tmp = (-x / y) * z;
} else {
tmp = 1.0 * 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 <= (-4.7d+54)) .or. (.not. (z <= 2.4d+45))) then
tmp = (-x / y) * z
else
tmp = 1.0d0 * x
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if ((z <= -4.7e+54) || !(z <= 2.4e+45)) {
tmp = (-x / y) * z;
} else {
tmp = 1.0 * x;
}
return tmp;
}
def code(x, y, z): tmp = 0 if (z <= -4.7e+54) or not (z <= 2.4e+45): tmp = (-x / y) * z else: tmp = 1.0 * x return tmp
function code(x, y, z) tmp = 0.0 if ((z <= -4.7e+54) || !(z <= 2.4e+45)) tmp = Float64(Float64(Float64(-x) / y) * z); else tmp = Float64(1.0 * x); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((z <= -4.7e+54) || ~((z <= 2.4e+45))) tmp = (-x / y) * z; else tmp = 1.0 * x; end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[z, -4.7e+54], N[Not[LessEqual[z, 2.4e+45]], $MachinePrecision]], N[(N[((-x) / y), $MachinePrecision] * z), $MachinePrecision], N[(1.0 * x), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z \leq -4.7 \cdot 10^{+54} \lor \neg \left(z \leq 2.4 \cdot 10^{+45}\right):\\
\;\;\;\;\frac{-x}{y} \cdot z\\
\mathbf{else}:\\
\;\;\;\;1 \cdot x\\
\end{array}
\end{array}
if z < -4.69999999999999993e54 or 2.39999999999999989e45 < z Initial program 90.4%
Taylor expanded in y around 0
associate-*l/N/A
associate-*l*N/A
lower-*.f64N/A
associate-*r/N/A
lower-/.f64N/A
mul-1-negN/A
lower-neg.f6484.2
Applied rewrites84.2%
if -4.69999999999999993e54 < z < 2.39999999999999989e45Initial program 77.5%
Applied rewrites99.9%
Taylor expanded in y around inf
Applied rewrites78.6%
Final simplification81.0%
(FPCore (x y z) :precision binary64 (if (<= z -4.7e+54) (/ (* x (- z)) y) (if (<= z 2.4e+45) (* 1.0 x) (* (/ (- x) y) z))))
double code(double x, double y, double z) {
double tmp;
if (z <= -4.7e+54) {
tmp = (x * -z) / y;
} else if (z <= 2.4e+45) {
tmp = 1.0 * x;
} else {
tmp = (-x / y) * z;
}
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 <= (-4.7d+54)) then
tmp = (x * -z) / y
else if (z <= 2.4d+45) then
tmp = 1.0d0 * x
else
tmp = (-x / y) * z
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if (z <= -4.7e+54) {
tmp = (x * -z) / y;
} else if (z <= 2.4e+45) {
tmp = 1.0 * x;
} else {
tmp = (-x / y) * z;
}
return tmp;
}
def code(x, y, z): tmp = 0 if z <= -4.7e+54: tmp = (x * -z) / y elif z <= 2.4e+45: tmp = 1.0 * x else: tmp = (-x / y) * z return tmp
function code(x, y, z) tmp = 0.0 if (z <= -4.7e+54) tmp = Float64(Float64(x * Float64(-z)) / y); elseif (z <= 2.4e+45) tmp = Float64(1.0 * x); else tmp = Float64(Float64(Float64(-x) / y) * z); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if (z <= -4.7e+54) tmp = (x * -z) / y; elseif (z <= 2.4e+45) tmp = 1.0 * x; else tmp = (-x / y) * z; end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[z, -4.7e+54], N[(N[(x * (-z)), $MachinePrecision] / y), $MachinePrecision], If[LessEqual[z, 2.4e+45], N[(1.0 * x), $MachinePrecision], N[(N[((-x) / y), $MachinePrecision] * z), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z \leq -4.7 \cdot 10^{+54}:\\
\;\;\;\;\frac{x \cdot \left(-z\right)}{y}\\
\mathbf{elif}\;z \leq 2.4 \cdot 10^{+45}:\\
\;\;\;\;1 \cdot x\\
\mathbf{else}:\\
\;\;\;\;\frac{-x}{y} \cdot z\\
\end{array}
\end{array}
if z < -4.69999999999999993e54Initial program 91.2%
Taylor expanded in y around 0
mul-1-negN/A
lower-neg.f6478.3
Applied rewrites78.3%
if -4.69999999999999993e54 < z < 2.39999999999999989e45Initial program 77.5%
Applied rewrites99.9%
Taylor expanded in y around inf
Applied rewrites78.6%
if 2.39999999999999989e45 < z Initial program 89.2%
Taylor expanded in y around 0
associate-*l/N/A
associate-*l*N/A
lower-*.f64N/A
associate-*r/N/A
lower-/.f64N/A
mul-1-negN/A
lower-neg.f6496.4
Applied rewrites96.4%
(FPCore (x y z) :precision binary64 (* 1.0 x))
double code(double x, double y, double z) {
return 1.0 * x;
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
code = 1.0d0 * x
end function
public static double code(double x, double y, double z) {
return 1.0 * x;
}
def code(x, y, z): return 1.0 * x
function code(x, y, z) return Float64(1.0 * x) end
function tmp = code(x, y, z) tmp = 1.0 * x; end
code[x_, y_, z_] := N[(1.0 * x), $MachinePrecision]
\begin{array}{l}
\\
1 \cdot x
\end{array}
Initial program 83.0%
Applied rewrites97.3%
Taylor expanded in y around inf
Applied rewrites51.5%
(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 2024326
(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))