
(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 (* x (/ z y))))
double code(double x, double y, double z) {
return x - (x * (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 - (x * (z / y))
end function
public static double code(double x, double y, double z) {
return x - (x * (z / y));
}
def code(x, y, z): return x - (x * (z / y))
function code(x, y, z) return Float64(x - Float64(x * Float64(z / y))) end
function tmp = code(x, y, z) tmp = x - (x * (z / y)); end
code[x_, y_, z_] := N[(x - N[(x * N[(z / y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x - x \cdot \frac{z}{y}
\end{array}
Initial program 85.8%
remove-double-neg85.8%
distribute-frac-neg285.8%
distribute-frac-neg85.8%
distribute-rgt-neg-in85.8%
associate-/l*97.3%
distribute-frac-neg97.3%
distribute-frac-neg297.3%
remove-double-neg97.3%
div-sub97.3%
*-inverses97.3%
Simplified97.3%
sub-neg97.3%
distribute-rgt-in97.3%
*-un-lft-identity97.3%
distribute-neg-frac297.3%
Applied egg-rr97.3%
Final simplification97.3%
(FPCore (x y z)
:precision binary64
(if (<= y -5.2e-13)
x
(if (or (<= y 1.55e-38) (and (not (<= y 2.35e+111)) (<= y 2.65e+122)))
(* z (/ x (- y)))
x)))
double code(double x, double y, double z) {
double tmp;
if (y <= -5.2e-13) {
tmp = x;
} else if ((y <= 1.55e-38) || (!(y <= 2.35e+111) && (y <= 2.65e+122))) {
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 <= (-5.2d-13)) then
tmp = x
else if ((y <= 1.55d-38) .or. (.not. (y <= 2.35d+111)) .and. (y <= 2.65d+122)) 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 <= -5.2e-13) {
tmp = x;
} else if ((y <= 1.55e-38) || (!(y <= 2.35e+111) && (y <= 2.65e+122))) {
tmp = z * (x / -y);
} else {
tmp = x;
}
return tmp;
}
def code(x, y, z): tmp = 0 if y <= -5.2e-13: tmp = x elif (y <= 1.55e-38) or (not (y <= 2.35e+111) and (y <= 2.65e+122)): tmp = z * (x / -y) else: tmp = x return tmp
function code(x, y, z) tmp = 0.0 if (y <= -5.2e-13) tmp = x; elseif ((y <= 1.55e-38) || (!(y <= 2.35e+111) && (y <= 2.65e+122))) 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 (y <= -5.2e-13) tmp = x; elseif ((y <= 1.55e-38) || (~((y <= 2.35e+111)) && (y <= 2.65e+122))) tmp = z * (x / -y); else tmp = x; end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[y, -5.2e-13], x, If[Or[LessEqual[y, 1.55e-38], And[N[Not[LessEqual[y, 2.35e+111]], $MachinePrecision], LessEqual[y, 2.65e+122]]], N[(z * N[(x / (-y)), $MachinePrecision]), $MachinePrecision], x]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -5.2 \cdot 10^{-13}:\\
\;\;\;\;x\\
\mathbf{elif}\;y \leq 1.55 \cdot 10^{-38} \lor \neg \left(y \leq 2.35 \cdot 10^{+111}\right) \land y \leq 2.65 \cdot 10^{+122}:\\
\;\;\;\;z \cdot \frac{x}{-y}\\
\mathbf{else}:\\
\;\;\;\;x\\
\end{array}
\end{array}
if y < -5.2000000000000001e-13 or 1.54999999999999991e-38 < y < 2.35000000000000004e111 or 2.65e122 < y Initial program 82.3%
remove-double-neg82.3%
distribute-frac-neg282.3%
distribute-frac-neg82.3%
distribute-rgt-neg-in82.3%
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 79.1%
if -5.2000000000000001e-13 < y < 1.54999999999999991e-38 or 2.35000000000000004e111 < y < 2.65e122Initial program 89.7%
remove-double-neg89.7%
distribute-frac-neg289.7%
distribute-frac-neg89.7%
distribute-rgt-neg-in89.7%
associate-/l*94.3%
distribute-frac-neg94.3%
distribute-frac-neg294.3%
remove-double-neg94.3%
div-sub94.3%
*-inverses94.3%
Simplified94.3%
Taylor expanded in z around inf 72.2%
mul-1-neg72.2%
distribute-frac-neg272.2%
*-commutative72.2%
associate-/l*73.7%
Simplified73.7%
Final simplification76.5%
(FPCore (x y z)
:precision binary64
(if (<= y -2.4e-70)
x
(if (or (<= y 1.75e-38) (and (not (<= y 2.35e+111)) (<= y 3.4e+121)))
(* x (/ z (- y)))
x)))
double code(double x, double y, double z) {
double tmp;
if (y <= -2.4e-70) {
tmp = x;
} else if ((y <= 1.75e-38) || (!(y <= 2.35e+111) && (y <= 3.4e+121))) {
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 (y <= (-2.4d-70)) then
tmp = x
else if ((y <= 1.75d-38) .or. (.not. (y <= 2.35d+111)) .and. (y <= 3.4d+121)) 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 (y <= -2.4e-70) {
tmp = x;
} else if ((y <= 1.75e-38) || (!(y <= 2.35e+111) && (y <= 3.4e+121))) {
tmp = x * (z / -y);
} else {
tmp = x;
}
return tmp;
}
def code(x, y, z): tmp = 0 if y <= -2.4e-70: tmp = x elif (y <= 1.75e-38) or (not (y <= 2.35e+111) and (y <= 3.4e+121)): tmp = x * (z / -y) else: tmp = x return tmp
function code(x, y, z) tmp = 0.0 if (y <= -2.4e-70) tmp = x; elseif ((y <= 1.75e-38) || (!(y <= 2.35e+111) && (y <= 3.4e+121))) tmp = Float64(x * Float64(z / Float64(-y))); else tmp = x; end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if (y <= -2.4e-70) tmp = x; elseif ((y <= 1.75e-38) || (~((y <= 2.35e+111)) && (y <= 3.4e+121))) tmp = x * (z / -y); else tmp = x; end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[y, -2.4e-70], x, If[Or[LessEqual[y, 1.75e-38], And[N[Not[LessEqual[y, 2.35e+111]], $MachinePrecision], LessEqual[y, 3.4e+121]]], N[(x * N[(z / (-y)), $MachinePrecision]), $MachinePrecision], x]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -2.4 \cdot 10^{-70}:\\
\;\;\;\;x\\
\mathbf{elif}\;y \leq 1.75 \cdot 10^{-38} \lor \neg \left(y \leq 2.35 \cdot 10^{+111}\right) \land y \leq 3.4 \cdot 10^{+121}:\\
\;\;\;\;x \cdot \frac{z}{-y}\\
\mathbf{else}:\\
\;\;\;\;x\\
\end{array}
\end{array}
if y < -2.4000000000000001e-70 or 1.7500000000000001e-38 < y < 2.35000000000000004e111 or 3.4000000000000001e121 < y Initial program 83.4%
remove-double-neg83.4%
distribute-frac-neg283.4%
distribute-frac-neg83.4%
distribute-rgt-neg-in83.4%
associate-/l*99.3%
distribute-frac-neg99.3%
distribute-frac-neg299.3%
remove-double-neg99.3%
div-sub99.3%
*-inverses99.3%
Simplified99.3%
Taylor expanded in z around 0 76.5%
if -2.4000000000000001e-70 < y < 1.7500000000000001e-38 or 2.35000000000000004e111 < y < 3.4000000000000001e121Initial program 89.1%
remove-double-neg89.1%
distribute-frac-neg289.1%
distribute-frac-neg89.1%
distribute-rgt-neg-in89.1%
associate-/l*94.5%
distribute-frac-neg94.5%
distribute-frac-neg294.5%
remove-double-neg94.5%
div-sub94.5%
*-inverses94.5%
Simplified94.5%
Taylor expanded in z around inf 74.2%
mul-1-neg74.2%
distribute-frac-neg274.2%
associate-*r/75.7%
Simplified75.7%
Final simplification76.1%
(FPCore (x y z) :precision binary64 (if (<= x 2e+37) x (* y (/ x y))))
double code(double x, double y, double z) {
double tmp;
if (x <= 2e+37) {
tmp = x;
} else {
tmp = y * (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 (x <= 2d+37) then
tmp = x
else
tmp = y * (x / y)
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if (x <= 2e+37) {
tmp = x;
} else {
tmp = y * (x / y);
}
return tmp;
}
def code(x, y, z): tmp = 0 if x <= 2e+37: tmp = x else: tmp = y * (x / y) return tmp
function code(x, y, z) tmp = 0.0 if (x <= 2e+37) tmp = x; else tmp = Float64(y * Float64(x / y)); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if (x <= 2e+37) tmp = x; else tmp = y * (x / y); end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[x, 2e+37], x, N[(y * N[(x / y), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq 2 \cdot 10^{+37}:\\
\;\;\;\;x\\
\mathbf{else}:\\
\;\;\;\;y \cdot \frac{x}{y}\\
\end{array}
\end{array}
if x < 1.99999999999999991e37Initial program 90.5%
remove-double-neg90.5%
distribute-frac-neg290.5%
distribute-frac-neg90.5%
distribute-rgt-neg-in90.5%
associate-/l*96.5%
distribute-frac-neg96.5%
distribute-frac-neg296.5%
remove-double-neg96.5%
div-sub96.5%
*-inverses96.5%
Simplified96.5%
Taylor expanded in z around 0 53.8%
if 1.99999999999999991e37 < x Initial program 70.4%
Taylor expanded in y around inf 31.9%
*-commutative31.9%
associate-/l*55.2%
Applied egg-rr55.2%
(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 85.8%
remove-double-neg85.8%
distribute-frac-neg285.8%
distribute-frac-neg85.8%
distribute-rgt-neg-in85.8%
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 85.8%
remove-double-neg85.8%
distribute-frac-neg285.8%
distribute-frac-neg85.8%
distribute-rgt-neg-in85.8%
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 53.0%
(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 2024110
(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))