
(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 (* (- 1.0 (/ z y)) x))
double code(double x, double y, double z) {
return (1.0 - (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 = (1.0d0 - (z / y)) * x
end function
public static double code(double x, double y, double z) {
return (1.0 - (z / y)) * x;
}
def code(x, y, z): return (1.0 - (z / y)) * x
function code(x, y, z) return Float64(Float64(1.0 - Float64(z / y)) * x) end
function tmp = code(x, y, z) tmp = (1.0 - (z / y)) * x; end
code[x_, y_, z_] := N[(N[(1.0 - N[(z / y), $MachinePrecision]), $MachinePrecision] * x), $MachinePrecision]
\begin{array}{l}
\\
\left(1 - \frac{z}{y}\right) \cdot x
\end{array}
Initial program 81.1%
Applied rewrites96.5%
lift-/.f64N/A
lift--.f64N/A
div-subN/A
lower--.f64N/A
*-inversesN/A
lower-/.f6496.5
Applied rewrites96.5%
(FPCore (x y z) :precision binary64 (if (or (<= z -5.9e+94) (not (<= z 2.5e-73))) (* (/ (- x) y) z) (* 1.0 x)))
double code(double x, double y, double z) {
double tmp;
if ((z <= -5.9e+94) || !(z <= 2.5e-73)) {
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 <= (-5.9d+94)) .or. (.not. (z <= 2.5d-73))) 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 <= -5.9e+94) || !(z <= 2.5e-73)) {
tmp = (-x / y) * z;
} else {
tmp = 1.0 * x;
}
return tmp;
}
def code(x, y, z): tmp = 0 if (z <= -5.9e+94) or not (z <= 2.5e-73): tmp = (-x / y) * z else: tmp = 1.0 * x return tmp
function code(x, y, z) tmp = 0.0 if ((z <= -5.9e+94) || !(z <= 2.5e-73)) 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 <= -5.9e+94) || ~((z <= 2.5e-73))) tmp = (-x / y) * z; else tmp = 1.0 * x; end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[z, -5.9e+94], N[Not[LessEqual[z, 2.5e-73]], $MachinePrecision]], N[(N[((-x) / y), $MachinePrecision] * z), $MachinePrecision], N[(1.0 * x), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z \leq -5.9 \cdot 10^{+94} \lor \neg \left(z \leq 2.5 \cdot 10^{-73}\right):\\
\;\;\;\;\frac{-x}{y} \cdot z\\
\mathbf{else}:\\
\;\;\;\;1 \cdot x\\
\end{array}
\end{array}
if z < -5.8999999999999999e94 or 2.4999999999999999e-73 < z Initial program 86.5%
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.f6478.3
Applied rewrites78.3%
if -5.8999999999999999e94 < z < 2.4999999999999999e-73Initial program 75.4%
Applied rewrites99.9%
Taylor expanded in y around inf
Applied rewrites76.3%
Final simplification77.3%
(FPCore (x y z) :precision binary64 (if (<= z -5.9e+94) (* (/ (- x) y) z) (if (<= z 8.5e-74) (* 1.0 x) (/ (* x (- z)) y))))
double code(double x, double y, double z) {
double tmp;
if (z <= -5.9e+94) {
tmp = (-x / y) * z;
} else if (z <= 8.5e-74) {
tmp = 1.0 * x;
} else {
tmp = (x * -z) / 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 <= (-5.9d+94)) then
tmp = (-x / y) * z
else if (z <= 8.5d-74) then
tmp = 1.0d0 * x
else
tmp = (x * -z) / y
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if (z <= -5.9e+94) {
tmp = (-x / y) * z;
} else if (z <= 8.5e-74) {
tmp = 1.0 * x;
} else {
tmp = (x * -z) / y;
}
return tmp;
}
def code(x, y, z): tmp = 0 if z <= -5.9e+94: tmp = (-x / y) * z elif z <= 8.5e-74: tmp = 1.0 * x else: tmp = (x * -z) / y return tmp
function code(x, y, z) tmp = 0.0 if (z <= -5.9e+94) tmp = Float64(Float64(Float64(-x) / y) * z); elseif (z <= 8.5e-74) tmp = Float64(1.0 * x); else tmp = Float64(Float64(x * Float64(-z)) / y); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if (z <= -5.9e+94) tmp = (-x / y) * z; elseif (z <= 8.5e-74) tmp = 1.0 * x; else tmp = (x * -z) / y; end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[z, -5.9e+94], N[(N[((-x) / y), $MachinePrecision] * z), $MachinePrecision], If[LessEqual[z, 8.5e-74], N[(1.0 * x), $MachinePrecision], N[(N[(x * (-z)), $MachinePrecision] / y), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z \leq -5.9 \cdot 10^{+94}:\\
\;\;\;\;\frac{-x}{y} \cdot z\\
\mathbf{elif}\;z \leq 8.5 \cdot 10^{-74}:\\
\;\;\;\;1 \cdot x\\
\mathbf{else}:\\
\;\;\;\;\frac{x \cdot \left(-z\right)}{y}\\
\end{array}
\end{array}
if z < -5.8999999999999999e94Initial program 87.5%
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.f6482.6
Applied rewrites82.6%
if -5.8999999999999999e94 < z < 8.50000000000000052e-74Initial program 75.4%
Applied rewrites99.9%
Taylor expanded in y around inf
Applied rewrites76.3%
if 8.50000000000000052e-74 < z Initial program 85.9%
Taylor expanded in y around 0
mul-1-negN/A
lower-neg.f6475.6
Applied rewrites75.6%
(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 81.1%
Applied rewrites96.5%
Taylor expanded in y around inf
Applied rewrites47.2%
(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 2024339
(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))