
(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 (if (or (<= y -5.5e-42) (not (<= y 1.85e-194))) (* x (- 1.0 (/ z y))) (* (- y z) (/ x y))))
double code(double x, double y, double z) {
double tmp;
if ((y <= -5.5e-42) || !(y <= 1.85e-194)) {
tmp = x * (1.0 - (z / y));
} 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 ((y <= (-5.5d-42)) .or. (.not. (y <= 1.85d-194))) then
tmp = x * (1.0d0 - (z / y))
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 ((y <= -5.5e-42) || !(y <= 1.85e-194)) {
tmp = x * (1.0 - (z / y));
} else {
tmp = (y - z) * (x / y);
}
return tmp;
}
def code(x, y, z): tmp = 0 if (y <= -5.5e-42) or not (y <= 1.85e-194): tmp = x * (1.0 - (z / y)) else: tmp = (y - z) * (x / y) return tmp
function code(x, y, z) tmp = 0.0 if ((y <= -5.5e-42) || !(y <= 1.85e-194)) tmp = Float64(x * Float64(1.0 - Float64(z / y))); else tmp = Float64(Float64(y - z) * Float64(x / y)); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((y <= -5.5e-42) || ~((y <= 1.85e-194))) tmp = x * (1.0 - (z / y)); else tmp = (y - z) * (x / y); end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[y, -5.5e-42], N[Not[LessEqual[y, 1.85e-194]], $MachinePrecision]], N[(x * N[(1.0 - N[(z / y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(N[(y - z), $MachinePrecision] * N[(x / y), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -5.5 \cdot 10^{-42} \lor \neg \left(y \leq 1.85 \cdot 10^{-194}\right):\\
\;\;\;\;x \cdot \left(1 - \frac{z}{y}\right)\\
\mathbf{else}:\\
\;\;\;\;\left(y - z\right) \cdot \frac{x}{y}\\
\end{array}
\end{array}
if y < -5.5e-42 or 1.85000000000000004e-194 < y Initial program 78.3%
remove-double-neg78.3%
distribute-frac-neg278.3%
distribute-frac-neg78.3%
distribute-rgt-neg-in78.3%
associate-/l*99.4%
distribute-frac-neg99.4%
distribute-frac-neg299.4%
remove-double-neg99.4%
div-sub99.4%
*-inverses99.4%
Simplified99.4%
if -5.5e-42 < y < 1.85000000000000004e-194Initial program 86.6%
*-commutative86.6%
associate-/l*95.7%
Applied egg-rr95.7%
Final simplification98.4%
(FPCore (x y z) :precision binary64 (if (or (<= z -6.2e-14) (not (<= z 65000.0))) (/ (* x (- z)) y) x))
double code(double x, double y, double z) {
double tmp;
if ((z <= -6.2e-14) || !(z <= 65000.0)) {
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 <= (-6.2d-14)) .or. (.not. (z <= 65000.0d0))) 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 <= -6.2e-14) || !(z <= 65000.0)) {
tmp = (x * -z) / y;
} else {
tmp = x;
}
return tmp;
}
def code(x, y, z): tmp = 0 if (z <= -6.2e-14) or not (z <= 65000.0): tmp = (x * -z) / y else: tmp = x return tmp
function code(x, y, z) tmp = 0.0 if ((z <= -6.2e-14) || !(z <= 65000.0)) tmp = Float64(Float64(x * Float64(-z)) / y); else tmp = x; end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((z <= -6.2e-14) || ~((z <= 65000.0))) tmp = (x * -z) / y; else tmp = x; end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[z, -6.2e-14], N[Not[LessEqual[z, 65000.0]], $MachinePrecision]], N[(N[(x * (-z)), $MachinePrecision] / y), $MachinePrecision], x]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z \leq -6.2 \cdot 10^{-14} \lor \neg \left(z \leq 65000\right):\\
\;\;\;\;\frac{x \cdot \left(-z\right)}{y}\\
\mathbf{else}:\\
\;\;\;\;x\\
\end{array}
\end{array}
if z < -6.20000000000000009e-14 or 65000 < z Initial program 89.9%
Taylor expanded in y around 0 73.8%
associate-*r*73.8%
*-commutative73.8%
mul-1-neg73.8%
Simplified73.8%
if -6.20000000000000009e-14 < z < 65000Initial program 72.1%
remove-double-neg72.1%
distribute-frac-neg272.1%
distribute-frac-neg72.1%
distribute-rgt-neg-in72.1%
associate-/l*99.9%
distribute-frac-neg99.9%
distribute-frac-neg299.9%
remove-double-neg99.9%
div-sub99.9%
*-inverses99.9%
Simplified99.9%
Taylor expanded in z around 0 82.1%
Final simplification78.2%
(FPCore (x y z) :precision binary64 (if (or (<= z -3.1e-13) (not (<= z 980000.0))) (* z (/ x (- y))) x))
double code(double x, double y, double z) {
double tmp;
if ((z <= -3.1e-13) || !(z <= 980000.0)) {
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 <= (-3.1d-13)) .or. (.not. (z <= 980000.0d0))) 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 <= -3.1e-13) || !(z <= 980000.0)) {
tmp = z * (x / -y);
} else {
tmp = x;
}
return tmp;
}
def code(x, y, z): tmp = 0 if (z <= -3.1e-13) or not (z <= 980000.0): tmp = z * (x / -y) else: tmp = x return tmp
function code(x, y, z) tmp = 0.0 if ((z <= -3.1e-13) || !(z <= 980000.0)) tmp = Float64(z * Float64(x / Float64(-y))); else tmp = x; end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((z <= -3.1e-13) || ~((z <= 980000.0))) tmp = z * (x / -y); else tmp = x; end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[z, -3.1e-13], N[Not[LessEqual[z, 980000.0]], $MachinePrecision]], N[(z * N[(x / (-y)), $MachinePrecision]), $MachinePrecision], x]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z \leq -3.1 \cdot 10^{-13} \lor \neg \left(z \leq 980000\right):\\
\;\;\;\;z \cdot \frac{x}{-y}\\
\mathbf{else}:\\
\;\;\;\;x\\
\end{array}
\end{array}
if z < -3.0999999999999999e-13 or 9.8e5 < z Initial program 89.9%
remove-double-neg89.9%
distribute-frac-neg289.9%
distribute-frac-neg89.9%
distribute-rgt-neg-in89.9%
associate-/l*89.9%
distribute-frac-neg89.9%
distribute-frac-neg289.9%
remove-double-neg89.9%
div-sub89.9%
*-inverses89.9%
Simplified89.9%
Taylor expanded in z around inf 73.8%
associate-*l/70.0%
associate-*l*70.0%
*-commutative70.0%
associate-*r/70.0%
mul-1-neg70.0%
Simplified70.0%
if -3.0999999999999999e-13 < z < 9.8e5Initial program 72.1%
remove-double-neg72.1%
distribute-frac-neg272.1%
distribute-frac-neg72.1%
distribute-rgt-neg-in72.1%
associate-/l*99.9%
distribute-frac-neg99.9%
distribute-frac-neg299.9%
remove-double-neg99.9%
div-sub99.9%
*-inverses99.9%
Simplified99.9%
Taylor expanded in z around 0 82.1%
Final simplification76.3%
(FPCore (x y z) :precision binary64 (if (<= x 5e+26) (- x (/ (* x z) y)) (* x (- 1.0 (/ z y)))))
double code(double x, double y, double z) {
double tmp;
if (x <= 5e+26) {
tmp = x - ((x * z) / y);
} else {
tmp = x * (1.0 - (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 <= 5d+26) then
tmp = x - ((x * z) / y)
else
tmp = x * (1.0d0 - (z / y))
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if (x <= 5e+26) {
tmp = x - ((x * z) / y);
} else {
tmp = x * (1.0 - (z / y));
}
return tmp;
}
def code(x, y, z): tmp = 0 if x <= 5e+26: tmp = x - ((x * z) / y) else: tmp = x * (1.0 - (z / y)) return tmp
function code(x, y, z) tmp = 0.0 if (x <= 5e+26) tmp = Float64(x - Float64(Float64(x * z) / y)); else tmp = Float64(x * Float64(1.0 - Float64(z / y))); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if (x <= 5e+26) tmp = x - ((x * z) / y); else tmp = x * (1.0 - (z / y)); end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[x, 5e+26], N[(x - N[(N[(x * z), $MachinePrecision] / y), $MachinePrecision]), $MachinePrecision], N[(x * N[(1.0 - N[(z / y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq 5 \cdot 10^{+26}:\\
\;\;\;\;x - \frac{x \cdot z}{y}\\
\mathbf{else}:\\
\;\;\;\;x \cdot \left(1 - \frac{z}{y}\right)\\
\end{array}
\end{array}
if x < 5.0000000000000001e26Initial program 86.6%
remove-double-neg86.6%
distribute-frac-neg286.6%
distribute-frac-neg86.6%
distribute-rgt-neg-in86.6%
associate-/l*93.7%
distribute-frac-neg93.7%
distribute-frac-neg293.7%
remove-double-neg93.7%
div-sub93.7%
*-inverses93.7%
Simplified93.7%
Taylor expanded in z around 0 95.0%
associate-*r/95.0%
mul-1-neg95.0%
distribute-rgt-neg-out95.0%
Simplified95.0%
if 5.0000000000000001e26 < x Initial program 60.9%
remove-double-neg60.9%
distribute-frac-neg260.9%
distribute-frac-neg60.9%
distribute-rgt-neg-in60.9%
associate-/l*99.9%
distribute-frac-neg99.9%
distribute-frac-neg299.9%
remove-double-neg99.9%
div-sub99.9%
*-inverses99.9%
Simplified99.9%
Final simplification96.1%
(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 80.6%
remove-double-neg80.6%
distribute-frac-neg280.6%
distribute-frac-neg80.6%
distribute-rgt-neg-in80.6%
associate-/l*95.1%
distribute-frac-neg95.1%
distribute-frac-neg295.1%
remove-double-neg95.1%
div-sub95.1%
*-inverses95.1%
Simplified95.1%
(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 80.6%
remove-double-neg80.6%
distribute-frac-neg280.6%
distribute-frac-neg80.6%
distribute-rgt-neg-in80.6%
associate-/l*95.1%
distribute-frac-neg95.1%
distribute-frac-neg295.1%
remove-double-neg95.1%
div-sub95.1%
*-inverses95.1%
Simplified95.1%
Taylor expanded in z around 0 55.2%
(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 2024092
(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))