
(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 87.1%
remove-double-neg87.1%
distribute-frac-neg287.1%
distribute-frac-neg87.1%
distribute-rgt-neg-in87.1%
associate-/l*97.3%
distribute-frac-neg97.3%
distribute-frac-neg297.3%
remove-double-neg97.3%
div-sub97.3%
*-inverses97.3%
Simplified97.3%
(FPCore (x y z) :precision binary64 (if (<= y -1.7e-16) x (if (<= y 0.0125) (/ (* z (- x)) y) x)))
double code(double x, double y, double z) {
double tmp;
if (y <= -1.7e-16) {
tmp = x;
} else if (y <= 0.0125) {
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 <= (-1.7d-16)) then
tmp = x
else if (y <= 0.0125d0) 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 <= -1.7e-16) {
tmp = x;
} else if (y <= 0.0125) {
tmp = (z * -x) / y;
} else {
tmp = x;
}
return tmp;
}
def code(x, y, z): tmp = 0 if y <= -1.7e-16: tmp = x elif y <= 0.0125: tmp = (z * -x) / y else: tmp = x return tmp
function code(x, y, z) tmp = 0.0 if (y <= -1.7e-16) tmp = x; elseif (y <= 0.0125) tmp = Float64(Float64(z * Float64(-x)) / y); else tmp = x; end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if (y <= -1.7e-16) tmp = x; elseif (y <= 0.0125) tmp = (z * -x) / y; else tmp = x; end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[y, -1.7e-16], x, If[LessEqual[y, 0.0125], N[(N[(z * (-x)), $MachinePrecision] / y), $MachinePrecision], x]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -1.7 \cdot 10^{-16}:\\
\;\;\;\;x\\
\mathbf{elif}\;y \leq 0.0125:\\
\;\;\;\;\frac{z \cdot \left(-x\right)}{y}\\
\mathbf{else}:\\
\;\;\;\;x\\
\end{array}
\end{array}
if y < -1.7e-16 or 0.012500000000000001 < y Initial program 78.3%
Taylor expanded in y around inf 80.7%
if -1.7e-16 < y < 0.012500000000000001Initial program 95.1%
Taylor expanded in y around 0 74.6%
associate-*r*74.6%
*-commutative74.6%
mul-1-neg74.6%
Simplified74.6%
(FPCore (x y z) :precision binary64 (if (<= y -6.4e-16) x (if (<= y 0.115) (/ z (/ (- y) x)) x)))
double code(double x, double y, double z) {
double tmp;
if (y <= -6.4e-16) {
tmp = x;
} else if (y <= 0.115) {
tmp = z / (-y / x);
} 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 <= (-6.4d-16)) then
tmp = x
else if (y <= 0.115d0) then
tmp = z / (-y / x)
else
tmp = x
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if (y <= -6.4e-16) {
tmp = x;
} else if (y <= 0.115) {
tmp = z / (-y / x);
} else {
tmp = x;
}
return tmp;
}
def code(x, y, z): tmp = 0 if y <= -6.4e-16: tmp = x elif y <= 0.115: tmp = z / (-y / x) else: tmp = x return tmp
function code(x, y, z) tmp = 0.0 if (y <= -6.4e-16) tmp = x; elseif (y <= 0.115) tmp = Float64(z / Float64(Float64(-y) / x)); else tmp = x; end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if (y <= -6.4e-16) tmp = x; elseif (y <= 0.115) tmp = z / (-y / x); else tmp = x; end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[y, -6.4e-16], x, If[LessEqual[y, 0.115], N[(z / N[((-y) / x), $MachinePrecision]), $MachinePrecision], x]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -6.4 \cdot 10^{-16}:\\
\;\;\;\;x\\
\mathbf{elif}\;y \leq 0.115:\\
\;\;\;\;\frac{z}{\frac{-y}{x}}\\
\mathbf{else}:\\
\;\;\;\;x\\
\end{array}
\end{array}
if y < -6.40000000000000046e-16 or 0.115000000000000005 < y Initial program 78.3%
Taylor expanded in y around inf 80.7%
if -6.40000000000000046e-16 < y < 0.115000000000000005Initial program 95.1%
*-commutative95.1%
associate-/l*90.9%
Applied egg-rr90.9%
clear-num90.8%
un-div-inv91.2%
Applied egg-rr91.2%
Taylor expanded in y around 0 73.9%
neg-mul-173.9%
Simplified73.9%
Final simplification77.1%
(FPCore (x y z) :precision binary64 (if (<= y -1.06e-16) x (if (<= y 0.018) (/ (- x) (/ y z)) x)))
double code(double x, double y, double z) {
double tmp;
if (y <= -1.06e-16) {
tmp = x;
} else if (y <= 0.018) {
tmp = -x / (y / z);
} 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 <= (-1.06d-16)) then
tmp = x
else if (y <= 0.018d0) then
tmp = -x / (y / z)
else
tmp = x
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if (y <= -1.06e-16) {
tmp = x;
} else if (y <= 0.018) {
tmp = -x / (y / z);
} else {
tmp = x;
}
return tmp;
}
def code(x, y, z): tmp = 0 if y <= -1.06e-16: tmp = x elif y <= 0.018: tmp = -x / (y / z) else: tmp = x return tmp
function code(x, y, z) tmp = 0.0 if (y <= -1.06e-16) tmp = x; elseif (y <= 0.018) tmp = Float64(Float64(-x) / Float64(y / z)); else tmp = x; end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if (y <= -1.06e-16) tmp = x; elseif (y <= 0.018) tmp = -x / (y / z); else tmp = x; end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[y, -1.06e-16], x, If[LessEqual[y, 0.018], N[((-x) / N[(y / z), $MachinePrecision]), $MachinePrecision], x]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -1.06 \cdot 10^{-16}:\\
\;\;\;\;x\\
\mathbf{elif}\;y \leq 0.018:\\
\;\;\;\;\frac{-x}{\frac{y}{z}}\\
\mathbf{else}:\\
\;\;\;\;x\\
\end{array}
\end{array}
if y < -1.06e-16 or 0.0179999999999999986 < y Initial program 78.3%
Taylor expanded in y around inf 80.7%
if -1.06e-16 < y < 0.0179999999999999986Initial program 95.1%
Taylor expanded in y around 0 74.6%
mul-1-neg74.6%
associate-/l*72.4%
distribute-lft-neg-in72.4%
Simplified72.4%
distribute-lft-neg-out72.4%
clear-num72.4%
un-div-inv72.7%
Applied egg-rr72.7%
Final simplification76.5%
(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 87.1%
Taylor expanded in y around inf 50.3%
(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 2024111
(FPCore (x y z)
:name "Diagrams.Backend.Cairo.Internal:setTexture from diagrams-cairo-1.3.0.3"
:precision binary64
:alt
(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))