
(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 (if (<= x 3.8e-176) (- x (* z (/ x y))) (/ x (/ (- y) (- z y)))))
double code(double x, double y, double z) {
double tmp;
if (x <= 3.8e-176) {
tmp = x - (z * (x / y));
} else {
tmp = x / (-y / (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 (x <= 3.8d-176) then
tmp = x - (z * (x / y))
else
tmp = x / (-y / (z - y))
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if (x <= 3.8e-176) {
tmp = x - (z * (x / y));
} else {
tmp = x / (-y / (z - y));
}
return tmp;
}
def code(x, y, z): tmp = 0 if x <= 3.8e-176: tmp = x - (z * (x / y)) else: tmp = x / (-y / (z - y)) return tmp
function code(x, y, z) tmp = 0.0 if (x <= 3.8e-176) tmp = Float64(x - Float64(z * Float64(x / y))); else tmp = Float64(x / Float64(Float64(-y) / Float64(z - y))); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if (x <= 3.8e-176) tmp = x - (z * (x / y)); else tmp = x / (-y / (z - y)); end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[x, 3.8e-176], N[(x - N[(z * N[(x / y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(x / N[((-y) / N[(z - y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq 3.8 \cdot 10^{-176}:\\
\;\;\;\;x - z \cdot \frac{x}{y}\\
\mathbf{else}:\\
\;\;\;\;\frac{x}{\frac{-y}{z - y}}\\
\end{array}
\end{array}
if x < 3.80000000000000012e-176Initial program 78.3%
associate-*l/83.6%
distribute-rgt-out--79.8%
associate-*r/77.0%
associate-*l/96.6%
*-inverses96.6%
*-lft-identity96.6%
Simplified96.6%
if 3.80000000000000012e-176 < x Initial program 84.9%
frac-2neg84.9%
div-inv84.8%
distribute-rgt-neg-in84.8%
Applied egg-rr84.8%
associate-*r/84.9%
*-rgt-identity84.9%
associate-/l*99.8%
neg-sub099.8%
associate--r-99.8%
neg-sub099.8%
Simplified99.8%
Final simplification97.9%
(FPCore (x y z) :precision binary64 (if (or (<= z -8e+27) (not (<= z 5.5e+25))) (* z (/ (- x) y)) x))
double code(double x, double y, double z) {
double tmp;
if ((z <= -8e+27) || !(z <= 5.5e+25)) {
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 <= (-8d+27)) .or. (.not. (z <= 5.5d+25))) 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 <= -8e+27) || !(z <= 5.5e+25)) {
tmp = z * (-x / y);
} else {
tmp = x;
}
return tmp;
}
def code(x, y, z): tmp = 0 if (z <= -8e+27) or not (z <= 5.5e+25): tmp = z * (-x / y) else: tmp = x return tmp
function code(x, y, z) tmp = 0.0 if ((z <= -8e+27) || !(z <= 5.5e+25)) 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 <= -8e+27) || ~((z <= 5.5e+25))) tmp = z * (-x / y); else tmp = x; end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[z, -8e+27], N[Not[LessEqual[z, 5.5e+25]], $MachinePrecision]], N[(z * N[((-x) / y), $MachinePrecision]), $MachinePrecision], x]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z \leq -8 \cdot 10^{+27} \lor \neg \left(z \leq 5.5 \cdot 10^{+25}\right):\\
\;\;\;\;z \cdot \frac{-x}{y}\\
\mathbf{else}:\\
\;\;\;\;x\\
\end{array}
\end{array}
if z < -8.0000000000000001e27 or 5.50000000000000018e25 < z Initial program 87.8%
associate-*l/87.8%
distribute-rgt-out--85.2%
associate-*r/85.3%
associate-*l/96.0%
*-inverses96.0%
*-lft-identity96.0%
Simplified96.0%
Taylor expanded in z around inf 74.6%
mul-1-neg74.6%
associate-*l/70.9%
distribute-rgt-neg-in70.9%
Simplified70.9%
Taylor expanded in z around 0 74.6%
associate-*r/77.5%
neg-mul-177.5%
distribute-rgt-neg-in77.5%
distribute-neg-frac77.5%
Simplified77.5%
if -8.0000000000000001e27 < z < 5.50000000000000018e25Initial program 75.1%
associate-*l/82.7%
distribute-rgt-out--77.6%
associate-*r/74.0%
associate-*l/95.9%
*-inverses95.9%
*-lft-identity95.9%
Simplified95.9%
Taylor expanded in z around 0 75.7%
Final simplification76.5%
(FPCore (x y z) :precision binary64 (if (<= z -7.5e+28) (/ (* x (- z)) y) (if (<= z 3.3e+25) x (* z (/ (- x) y)))))
double code(double x, double y, double z) {
double tmp;
if (z <= -7.5e+28) {
tmp = (x * -z) / y;
} else if (z <= 3.3e+25) {
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 <= (-7.5d+28)) then
tmp = (x * -z) / y
else if (z <= 3.3d+25) 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 <= -7.5e+28) {
tmp = (x * -z) / y;
} else if (z <= 3.3e+25) {
tmp = x;
} else {
tmp = z * (-x / y);
}
return tmp;
}
def code(x, y, z): tmp = 0 if z <= -7.5e+28: tmp = (x * -z) / y elif z <= 3.3e+25: tmp = x else: tmp = z * (-x / y) return tmp
function code(x, y, z) tmp = 0.0 if (z <= -7.5e+28) tmp = Float64(Float64(x * Float64(-z)) / y); elseif (z <= 3.3e+25) 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 <= -7.5e+28) tmp = (x * -z) / y; elseif (z <= 3.3e+25) tmp = x; else tmp = z * (-x / y); end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[z, -7.5e+28], N[(N[(x * (-z)), $MachinePrecision] / y), $MachinePrecision], If[LessEqual[z, 3.3e+25], x, N[(z * N[((-x) / y), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z \leq -7.5 \cdot 10^{+28}:\\
\;\;\;\;\frac{x \cdot \left(-z\right)}{y}\\
\mathbf{elif}\;z \leq 3.3 \cdot 10^{+25}:\\
\;\;\;\;x\\
\mathbf{else}:\\
\;\;\;\;z \cdot \frac{-x}{y}\\
\end{array}
\end{array}
if z < -7.4999999999999998e28Initial program 94.1%
associate-*l/79.6%
distribute-rgt-out--77.6%
associate-*r/89.2%
associate-*l/94.9%
*-inverses94.9%
*-lft-identity94.9%
Simplified94.9%
Taylor expanded in z around inf 73.0%
associate-*r/73.0%
neg-mul-173.0%
distribute-rgt-neg-in73.0%
Simplified73.0%
if -7.4999999999999998e28 < z < 3.3000000000000001e25Initial program 75.1%
associate-*l/82.7%
distribute-rgt-out--77.6%
associate-*r/74.0%
associate-*l/95.9%
*-inverses95.9%
*-lft-identity95.9%
Simplified95.9%
Taylor expanded in z around 0 75.7%
if 3.3000000000000001e25 < z Initial program 83.0%
associate-*l/93.9%
distribute-rgt-out--90.9%
associate-*r/82.4%
associate-*l/96.8%
*-inverses96.8%
*-lft-identity96.8%
Simplified96.8%
Taylor expanded in z around inf 75.8%
mul-1-neg75.8%
associate-*l/79.1%
distribute-rgt-neg-in79.1%
Simplified79.1%
Taylor expanded in z around 0 75.8%
associate-*r/83.1%
neg-mul-183.1%
distribute-rgt-neg-in83.1%
distribute-neg-frac83.1%
Simplified83.1%
Final simplification77.1%
(FPCore (x y z) :precision binary64 (- x (* z (/ x y))))
double code(double x, double y, double z) {
return x - (z * (x / 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 - (z * (x / y))
end function
public static double code(double x, double y, double z) {
return x - (z * (x / y));
}
def code(x, y, z): return x - (z * (x / y))
function code(x, y, z) return Float64(x - Float64(z * Float64(x / y))) end
function tmp = code(x, y, z) tmp = x - (z * (x / y)); end
code[x_, y_, z_] := N[(x - N[(z * N[(x / y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x - z \cdot \frac{x}{y}
\end{array}
Initial program 80.9%
associate-*l/85.1%
distribute-rgt-out--81.1%
associate-*r/79.2%
associate-*l/95.9%
*-inverses95.9%
*-lft-identity95.9%
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 80.9%
associate-*l/85.1%
distribute-rgt-out--81.1%
associate-*r/79.2%
associate-*l/95.9%
*-inverses95.9%
*-lft-identity95.9%
Simplified95.9%
Taylor expanded in z around 0 50.6%
Final simplification50.6%
(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 2023230
(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))