
(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 (/ x (/ y (- y z))))
double code(double x, double y, double z) {
return x / (y / (y - z));
}
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 / (y - z))
end function
public static double code(double x, double y, double z) {
return x / (y / (y - z));
}
def code(x, y, z): return x / (y / (y - z))
function code(x, y, z) return Float64(x / Float64(y / Float64(y - z))) end
function tmp = code(x, y, z) tmp = x / (y / (y - z)); end
code[x_, y_, z_] := N[(x / N[(y / N[(y - z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\frac{x}{\frac{y}{y - z}}
\end{array}
Initial program 85.6%
remove-double-neg85.6%
distribute-frac-neg285.6%
distribute-frac-neg85.6%
distribute-rgt-neg-in85.6%
associate-/l*97.3%
distribute-frac-neg97.3%
distribute-frac-neg297.3%
remove-double-neg97.3%
div-sub97.3%
*-inverses97.3%
Simplified97.3%
*-inverses97.3%
div-sub97.3%
clear-num97.2%
un-div-inv97.3%
Applied egg-rr97.3%
(FPCore (x y z) :precision binary64 (if (or (<= z -2.5e-24) (not (<= z 520000000000.0))) (* z (/ (- x) y)) x))
double code(double x, double y, double z) {
double tmp;
if ((z <= -2.5e-24) || !(z <= 520000000000.0)) {
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 <= (-2.5d-24)) .or. (.not. (z <= 520000000000.0d0))) 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 <= -2.5e-24) || !(z <= 520000000000.0)) {
tmp = z * (-x / y);
} else {
tmp = x;
}
return tmp;
}
def code(x, y, z): tmp = 0 if (z <= -2.5e-24) or not (z <= 520000000000.0): tmp = z * (-x / y) else: tmp = x return tmp
function code(x, y, z) tmp = 0.0 if ((z <= -2.5e-24) || !(z <= 520000000000.0)) 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 <= -2.5e-24) || ~((z <= 520000000000.0))) tmp = z * (-x / y); else tmp = x; end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[z, -2.5e-24], N[Not[LessEqual[z, 520000000000.0]], $MachinePrecision]], N[(z * N[((-x) / y), $MachinePrecision]), $MachinePrecision], x]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z \leq -2.5 \cdot 10^{-24} \lor \neg \left(z \leq 520000000000\right):\\
\;\;\;\;z \cdot \frac{-x}{y}\\
\mathbf{else}:\\
\;\;\;\;x\\
\end{array}
\end{array}
if z < -2.4999999999999999e-24 or 5.2e11 < z Initial program 88.3%
remove-double-neg88.3%
distribute-frac-neg288.3%
distribute-frac-neg88.3%
distribute-rgt-neg-in88.3%
associate-/l*94.8%
distribute-frac-neg94.8%
distribute-frac-neg294.8%
remove-double-neg94.8%
div-sub94.7%
*-inverses94.7%
Simplified94.7%
Taylor expanded in z around inf 72.8%
mul-1-neg72.8%
distribute-frac-neg272.8%
*-commutative72.8%
associate-/l*75.6%
Simplified75.6%
if -2.4999999999999999e-24 < z < 5.2e11Initial program 82.8%
remove-double-neg82.8%
distribute-frac-neg282.8%
distribute-frac-neg82.8%
distribute-rgt-neg-in82.8%
associate-/l*100.0%
distribute-frac-neg100.0%
distribute-frac-neg2100.0%
remove-double-neg100.0%
div-sub100.0%
*-inverses100.0%
Simplified100.0%
Taylor expanded in z around 0 83.2%
Final simplification79.3%
(FPCore (x y z) :precision binary64 (if (or (<= z -8.2e-24) (not (<= z 230000000000.0))) (* x (/ (- z) y)) x))
double code(double x, double y, double z) {
double tmp;
if ((z <= -8.2e-24) || !(z <= 230000000000.0)) {
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 <= (-8.2d-24)) .or. (.not. (z <= 230000000000.0d0))) 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 <= -8.2e-24) || !(z <= 230000000000.0)) {
tmp = x * (-z / y);
} else {
tmp = x;
}
return tmp;
}
def code(x, y, z): tmp = 0 if (z <= -8.2e-24) or not (z <= 230000000000.0): tmp = x * (-z / y) else: tmp = x return tmp
function code(x, y, z) tmp = 0.0 if ((z <= -8.2e-24) || !(z <= 230000000000.0)) tmp = Float64(x * Float64(Float64(-z) / y)); else tmp = x; end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((z <= -8.2e-24) || ~((z <= 230000000000.0))) tmp = x * (-z / y); else tmp = x; end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[z, -8.2e-24], N[Not[LessEqual[z, 230000000000.0]], $MachinePrecision]], N[(x * N[((-z) / y), $MachinePrecision]), $MachinePrecision], x]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z \leq -8.2 \cdot 10^{-24} \lor \neg \left(z \leq 230000000000\right):\\
\;\;\;\;x \cdot \frac{-z}{y}\\
\mathbf{else}:\\
\;\;\;\;x\\
\end{array}
\end{array}
if z < -8.20000000000000029e-24 or 2.3e11 < z Initial program 88.3%
associate-/l*94.8%
Simplified94.8%
Taylor expanded in y around 0 72.6%
neg-mul-172.6%
Simplified72.6%
if -8.20000000000000029e-24 < z < 2.3e11Initial program 82.8%
remove-double-neg82.8%
distribute-frac-neg282.8%
distribute-frac-neg82.8%
distribute-rgt-neg-in82.8%
associate-/l*100.0%
distribute-frac-neg100.0%
distribute-frac-neg2100.0%
remove-double-neg100.0%
div-sub100.0%
*-inverses100.0%
Simplified100.0%
Taylor expanded in z around 0 83.2%
Final simplification77.8%
(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(x * Float64(Float64(y - z) / y)) end
function tmp = code(x, y, z) tmp = x * ((y - z) / y); end
code[x_, y_, z_] := N[(x * N[(N[(y - z), $MachinePrecision] / y), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x \cdot \frac{y - z}{y}
\end{array}
Initial program 85.6%
associate-/l*97.3%
Simplified97.3%
(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 85.6%
remove-double-neg85.6%
distribute-frac-neg285.6%
distribute-frac-neg85.6%
distribute-rgt-neg-in85.6%
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 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 85.6%
remove-double-neg85.6%
distribute-frac-neg285.6%
distribute-frac-neg85.6%
distribute-rgt-neg-in85.6%
associate-/l*97.3%
distribute-frac-neg97.3%
distribute-frac-neg297.3%
remove-double-neg97.3%
div-sub97.3%
*-inverses97.3%
Simplified97.3%
Taylor expanded in z around 0 51.9%
(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 2024170
(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))