
(FPCore (x y z) :precision binary64 (* x (- 1.0 (* y z))))
double code(double x, double y, double z) {
return x * (1.0 - (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 * (1.0d0 - (y * z))
end function
public static double code(double x, double y, double z) {
return x * (1.0 - (y * z));
}
def code(x, y, z): return x * (1.0 - (y * z))
function code(x, y, z) return Float64(x * Float64(1.0 - Float64(y * z))) end
function tmp = code(x, y, z) tmp = x * (1.0 - (y * z)); end
code[x_, y_, z_] := N[(x * N[(1.0 - N[(y * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x \cdot \left(1 - y \cdot z\right)
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 4 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x y z) :precision binary64 (* x (- 1.0 (* y z))))
double code(double x, double y, double z) {
return x * (1.0 - (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 * (1.0d0 - (y * z))
end function
public static double code(double x, double y, double z) {
return x * (1.0 - (y * z));
}
def code(x, y, z): return x * (1.0 - (y * z))
function code(x, y, z) return Float64(x * Float64(1.0 - Float64(y * z))) end
function tmp = code(x, y, z) tmp = x * (1.0 - (y * z)); end
code[x_, y_, z_] := N[(x * N[(1.0 - N[(y * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x \cdot \left(1 - y \cdot z\right)
\end{array}
x\_m = (fabs.f64 x) x\_s = (copysign.f64 1 x) NOTE: x_m, y, and z should be sorted in increasing order before calling this function. (FPCore (x_s x_m y z) :precision binary64 (let* ((t_0 (* x_m (- 1.0 (* y z))))) (* x_s (if (<= t_0 2e+298) t_0 (* y (* x_m (- z)))))))
x\_m = fabs(x);
x\_s = copysign(1.0, x);
assert(x_m < y && y < z);
double code(double x_s, double x_m, double y, double z) {
double t_0 = x_m * (1.0 - (y * z));
double tmp;
if (t_0 <= 2e+298) {
tmp = t_0;
} else {
tmp = y * (x_m * -z);
}
return x_s * tmp;
}
x\_m = abs(x)
x\_s = copysign(1.0d0, x)
NOTE: x_m, y, and z should be sorted in increasing order before calling this function.
real(8) function code(x_s, x_m, y, z)
real(8), intent (in) :: x_s
real(8), intent (in) :: x_m
real(8), intent (in) :: y
real(8), intent (in) :: z
real(8) :: t_0
real(8) :: tmp
t_0 = x_m * (1.0d0 - (y * z))
if (t_0 <= 2d+298) then
tmp = t_0
else
tmp = y * (x_m * -z)
end if
code = x_s * tmp
end function
x\_m = Math.abs(x);
x\_s = Math.copySign(1.0, x);
assert x_m < y && y < z;
public static double code(double x_s, double x_m, double y, double z) {
double t_0 = x_m * (1.0 - (y * z));
double tmp;
if (t_0 <= 2e+298) {
tmp = t_0;
} else {
tmp = y * (x_m * -z);
}
return x_s * tmp;
}
x\_m = math.fabs(x) x\_s = math.copysign(1.0, x) [x_m, y, z] = sort([x_m, y, z]) def code(x_s, x_m, y, z): t_0 = x_m * (1.0 - (y * z)) tmp = 0 if t_0 <= 2e+298: tmp = t_0 else: tmp = y * (x_m * -z) return x_s * tmp
x\_m = abs(x) x\_s = copysign(1.0, x) x_m, y, z = sort([x_m, y, z]) function code(x_s, x_m, y, z) t_0 = Float64(x_m * Float64(1.0 - Float64(y * z))) tmp = 0.0 if (t_0 <= 2e+298) tmp = t_0; else tmp = Float64(y * Float64(x_m * Float64(-z))); end return Float64(x_s * tmp) end
x\_m = abs(x);
x\_s = sign(x) * abs(1.0);
x_m, y, z = num2cell(sort([x_m, y, z])){:}
function tmp_2 = code(x_s, x_m, y, z)
t_0 = x_m * (1.0 - (y * z));
tmp = 0.0;
if (t_0 <= 2e+298)
tmp = t_0;
else
tmp = y * (x_m * -z);
end
tmp_2 = x_s * tmp;
end
x\_m = N[Abs[x], $MachinePrecision]
x\_s = N[With[{TMP1 = Abs[1.0], TMP2 = Sign[x]}, TMP1 * If[TMP2 == 0, 1, TMP2]], $MachinePrecision]
NOTE: x_m, y, and z should be sorted in increasing order before calling this function.
code[x$95$s_, x$95$m_, y_, z_] := Block[{t$95$0 = N[(x$95$m * N[(1.0 - N[(y * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, N[(x$95$s * If[LessEqual[t$95$0, 2e+298], t$95$0, N[(y * N[(x$95$m * (-z)), $MachinePrecision]), $MachinePrecision]]), $MachinePrecision]]
\begin{array}{l}
x\_m = \left|x\right|
\\
x\_s = \mathsf{copysign}\left(1, x\right)
\\
[x_m, y, z] = \mathsf{sort}([x_m, y, z])\\
\\
\begin{array}{l}
t_0 := x\_m \cdot \left(1 - y \cdot z\right)\\
x\_s \cdot \begin{array}{l}
\mathbf{if}\;t\_0 \leq 2 \cdot 10^{+298}:\\
\;\;\;\;t\_0\\
\mathbf{else}:\\
\;\;\;\;y \cdot \left(x\_m \cdot \left(-z\right)\right)\\
\end{array}
\end{array}
\end{array}
if (*.f64 x (-.f64 1 (*.f64 y z))) < 1.9999999999999999e298Initial program 98.6%
if 1.9999999999999999e298 < (*.f64 x (-.f64 1 (*.f64 y z))) Initial program 83.5%
Taylor expanded in y around inf 83.5%
mul-1-neg83.5%
associate-*r*96.7%
distribute-rgt-neg-in96.7%
*-commutative96.7%
associate-*l*96.7%
Simplified96.7%
Final simplification98.4%
x\_m = (fabs.f64 x)
x\_s = (copysign.f64 1 x)
NOTE: x_m, y, and z should be sorted in increasing order before calling this function.
(FPCore (x_s x_m y z)
:precision binary64
(*
x_s
(if (<= (* y z) (- INFINITY))
(* (- z) (* x_m y))
(if (or (<= (* y z) -200000000000.0) (not (<= (* y z) 1e-15)))
(* x_m (* y (- z)))
x_m))))x\_m = fabs(x);
x\_s = copysign(1.0, x);
assert(x_m < y && y < z);
double code(double x_s, double x_m, double y, double z) {
double tmp;
if ((y * z) <= -((double) INFINITY)) {
tmp = -z * (x_m * y);
} else if (((y * z) <= -200000000000.0) || !((y * z) <= 1e-15)) {
tmp = x_m * (y * -z);
} else {
tmp = x_m;
}
return x_s * tmp;
}
x\_m = Math.abs(x);
x\_s = Math.copySign(1.0, x);
assert x_m < y && y < z;
public static double code(double x_s, double x_m, double y, double z) {
double tmp;
if ((y * z) <= -Double.POSITIVE_INFINITY) {
tmp = -z * (x_m * y);
} else if (((y * z) <= -200000000000.0) || !((y * z) <= 1e-15)) {
tmp = x_m * (y * -z);
} else {
tmp = x_m;
}
return x_s * tmp;
}
x\_m = math.fabs(x) x\_s = math.copysign(1.0, x) [x_m, y, z] = sort([x_m, y, z]) def code(x_s, x_m, y, z): tmp = 0 if (y * z) <= -math.inf: tmp = -z * (x_m * y) elif ((y * z) <= -200000000000.0) or not ((y * z) <= 1e-15): tmp = x_m * (y * -z) else: tmp = x_m return x_s * tmp
x\_m = abs(x) x\_s = copysign(1.0, x) x_m, y, z = sort([x_m, y, z]) function code(x_s, x_m, y, z) tmp = 0.0 if (Float64(y * z) <= Float64(-Inf)) tmp = Float64(Float64(-z) * Float64(x_m * y)); elseif ((Float64(y * z) <= -200000000000.0) || !(Float64(y * z) <= 1e-15)) tmp = Float64(x_m * Float64(y * Float64(-z))); else tmp = x_m; end return Float64(x_s * tmp) end
x\_m = abs(x);
x\_s = sign(x) * abs(1.0);
x_m, y, z = num2cell(sort([x_m, y, z])){:}
function tmp_2 = code(x_s, x_m, y, z)
tmp = 0.0;
if ((y * z) <= -Inf)
tmp = -z * (x_m * y);
elseif (((y * z) <= -200000000000.0) || ~(((y * z) <= 1e-15)))
tmp = x_m * (y * -z);
else
tmp = x_m;
end
tmp_2 = x_s * tmp;
end
x\_m = N[Abs[x], $MachinePrecision]
x\_s = N[With[{TMP1 = Abs[1.0], TMP2 = Sign[x]}, TMP1 * If[TMP2 == 0, 1, TMP2]], $MachinePrecision]
NOTE: x_m, y, and z should be sorted in increasing order before calling this function.
code[x$95$s_, x$95$m_, y_, z_] := N[(x$95$s * If[LessEqual[N[(y * z), $MachinePrecision], (-Infinity)], N[((-z) * N[(x$95$m * y), $MachinePrecision]), $MachinePrecision], If[Or[LessEqual[N[(y * z), $MachinePrecision], -200000000000.0], N[Not[LessEqual[N[(y * z), $MachinePrecision], 1e-15]], $MachinePrecision]], N[(x$95$m * N[(y * (-z)), $MachinePrecision]), $MachinePrecision], x$95$m]]), $MachinePrecision]
\begin{array}{l}
x\_m = \left|x\right|
\\
x\_s = \mathsf{copysign}\left(1, x\right)
\\
[x_m, y, z] = \mathsf{sort}([x_m, y, z])\\
\\
x\_s \cdot \begin{array}{l}
\mathbf{if}\;y \cdot z \leq -\infty:\\
\;\;\;\;\left(-z\right) \cdot \left(x\_m \cdot y\right)\\
\mathbf{elif}\;y \cdot z \leq -200000000000 \lor \neg \left(y \cdot z \leq 10^{-15}\right):\\
\;\;\;\;x\_m \cdot \left(y \cdot \left(-z\right)\right)\\
\mathbf{else}:\\
\;\;\;\;x\_m\\
\end{array}
\end{array}
if (*.f64 y z) < -inf.0Initial program 74.4%
Taylor expanded in y around inf 74.4%
mul-1-neg74.4%
associate-*r*99.9%
Simplified99.9%
if -inf.0 < (*.f64 y z) < -2e11 or 1.0000000000000001e-15 < (*.f64 y z) Initial program 97.0%
Taylor expanded in y around inf 95.9%
mul-1-neg95.9%
associate-*r*88.8%
Simplified88.8%
Taylor expanded in x around 0 95.9%
if -2e11 < (*.f64 y z) < 1.0000000000000001e-15Initial program 100.0%
Taylor expanded in y around 0 98.9%
Final simplification97.7%
x\_m = (fabs.f64 x)
x\_s = (copysign.f64 1 x)
NOTE: x_m, y, and z should be sorted in increasing order before calling this function.
(FPCore (x_s x_m y z)
:precision binary64
(*
x_s
(if (or (<= (* y z) -200000000000.0) (not (<= (* y z) 1e-15)))
(* x_m (* y (- z)))
x_m)))x\_m = fabs(x);
x\_s = copysign(1.0, x);
assert(x_m < y && y < z);
double code(double x_s, double x_m, double y, double z) {
double tmp;
if (((y * z) <= -200000000000.0) || !((y * z) <= 1e-15)) {
tmp = x_m * (y * -z);
} else {
tmp = x_m;
}
return x_s * tmp;
}
x\_m = abs(x)
x\_s = copysign(1.0d0, x)
NOTE: x_m, y, and z should be sorted in increasing order before calling this function.
real(8) function code(x_s, x_m, y, z)
real(8), intent (in) :: x_s
real(8), intent (in) :: x_m
real(8), intent (in) :: y
real(8), intent (in) :: z
real(8) :: tmp
if (((y * z) <= (-200000000000.0d0)) .or. (.not. ((y * z) <= 1d-15))) then
tmp = x_m * (y * -z)
else
tmp = x_m
end if
code = x_s * tmp
end function
x\_m = Math.abs(x);
x\_s = Math.copySign(1.0, x);
assert x_m < y && y < z;
public static double code(double x_s, double x_m, double y, double z) {
double tmp;
if (((y * z) <= -200000000000.0) || !((y * z) <= 1e-15)) {
tmp = x_m * (y * -z);
} else {
tmp = x_m;
}
return x_s * tmp;
}
x\_m = math.fabs(x) x\_s = math.copysign(1.0, x) [x_m, y, z] = sort([x_m, y, z]) def code(x_s, x_m, y, z): tmp = 0 if ((y * z) <= -200000000000.0) or not ((y * z) <= 1e-15): tmp = x_m * (y * -z) else: tmp = x_m return x_s * tmp
x\_m = abs(x) x\_s = copysign(1.0, x) x_m, y, z = sort([x_m, y, z]) function code(x_s, x_m, y, z) tmp = 0.0 if ((Float64(y * z) <= -200000000000.0) || !(Float64(y * z) <= 1e-15)) tmp = Float64(x_m * Float64(y * Float64(-z))); else tmp = x_m; end return Float64(x_s * tmp) end
x\_m = abs(x);
x\_s = sign(x) * abs(1.0);
x_m, y, z = num2cell(sort([x_m, y, z])){:}
function tmp_2 = code(x_s, x_m, y, z)
tmp = 0.0;
if (((y * z) <= -200000000000.0) || ~(((y * z) <= 1e-15)))
tmp = x_m * (y * -z);
else
tmp = x_m;
end
tmp_2 = x_s * tmp;
end
x\_m = N[Abs[x], $MachinePrecision]
x\_s = N[With[{TMP1 = Abs[1.0], TMP2 = Sign[x]}, TMP1 * If[TMP2 == 0, 1, TMP2]], $MachinePrecision]
NOTE: x_m, y, and z should be sorted in increasing order before calling this function.
code[x$95$s_, x$95$m_, y_, z_] := N[(x$95$s * If[Or[LessEqual[N[(y * z), $MachinePrecision], -200000000000.0], N[Not[LessEqual[N[(y * z), $MachinePrecision], 1e-15]], $MachinePrecision]], N[(x$95$m * N[(y * (-z)), $MachinePrecision]), $MachinePrecision], x$95$m]), $MachinePrecision]
\begin{array}{l}
x\_m = \left|x\right|
\\
x\_s = \mathsf{copysign}\left(1, x\right)
\\
[x_m, y, z] = \mathsf{sort}([x_m, y, z])\\
\\
x\_s \cdot \begin{array}{l}
\mathbf{if}\;y \cdot z \leq -200000000000 \lor \neg \left(y \cdot z \leq 10^{-15}\right):\\
\;\;\;\;x\_m \cdot \left(y \cdot \left(-z\right)\right)\\
\mathbf{else}:\\
\;\;\;\;x\_m\\
\end{array}
\end{array}
if (*.f64 y z) < -2e11 or 1.0000000000000001e-15 < (*.f64 y z) Initial program 93.7%
Taylor expanded in y around inf 92.8%
mul-1-neg92.8%
associate-*r*90.4%
Simplified90.4%
Taylor expanded in x around 0 92.8%
if -2e11 < (*.f64 y z) < 1.0000000000000001e-15Initial program 100.0%
Taylor expanded in y around 0 98.9%
Final simplification95.9%
x\_m = (fabs.f64 x) x\_s = (copysign.f64 1 x) NOTE: x_m, y, and z should be sorted in increasing order before calling this function. (FPCore (x_s x_m y z) :precision binary64 (* x_s x_m))
x\_m = fabs(x);
x\_s = copysign(1.0, x);
assert(x_m < y && y < z);
double code(double x_s, double x_m, double y, double z) {
return x_s * x_m;
}
x\_m = abs(x)
x\_s = copysign(1.0d0, x)
NOTE: x_m, y, and z should be sorted in increasing order before calling this function.
real(8) function code(x_s, x_m, y, z)
real(8), intent (in) :: x_s
real(8), intent (in) :: x_m
real(8), intent (in) :: y
real(8), intent (in) :: z
code = x_s * x_m
end function
x\_m = Math.abs(x);
x\_s = Math.copySign(1.0, x);
assert x_m < y && y < z;
public static double code(double x_s, double x_m, double y, double z) {
return x_s * x_m;
}
x\_m = math.fabs(x) x\_s = math.copysign(1.0, x) [x_m, y, z] = sort([x_m, y, z]) def code(x_s, x_m, y, z): return x_s * x_m
x\_m = abs(x) x\_s = copysign(1.0, x) x_m, y, z = sort([x_m, y, z]) function code(x_s, x_m, y, z) return Float64(x_s * x_m) end
x\_m = abs(x);
x\_s = sign(x) * abs(1.0);
x_m, y, z = num2cell(sort([x_m, y, z])){:}
function tmp = code(x_s, x_m, y, z)
tmp = x_s * x_m;
end
x\_m = N[Abs[x], $MachinePrecision]
x\_s = N[With[{TMP1 = Abs[1.0], TMP2 = Sign[x]}, TMP1 * If[TMP2 == 0, 1, TMP2]], $MachinePrecision]
NOTE: x_m, y, and z should be sorted in increasing order before calling this function.
code[x$95$s_, x$95$m_, y_, z_] := N[(x$95$s * x$95$m), $MachinePrecision]
\begin{array}{l}
x\_m = \left|x\right|
\\
x\_s = \mathsf{copysign}\left(1, x\right)
\\
[x_m, y, z] = \mathsf{sort}([x_m, y, z])\\
\\
x\_s \cdot x\_m
\end{array}
Initial program 97.0%
Taylor expanded in y around 0 52.7%
Final simplification52.7%
herbie shell --seed 2024055
(FPCore (x y z)
:name "Data.Colour.RGBSpace.HSV:hsv from colour-2.3.3, I"
:precision binary64
(* x (- 1.0 (* y z))))