
(FPCore (x y z) :precision binary64 (/ (* x (+ (- y z) 1.0)) z))
double code(double x, double y, double z) {
return (x * ((y - z) + 1.0)) / 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 - z) + 1.0d0)) / z
end function
public static double code(double x, double y, double z) {
return (x * ((y - z) + 1.0)) / z;
}
def code(x, y, z): return (x * ((y - z) + 1.0)) / z
function code(x, y, z) return Float64(Float64(x * Float64(Float64(y - z) + 1.0)) / z) end
function tmp = code(x, y, z) tmp = (x * ((y - z) + 1.0)) / z; end
code[x_, y_, z_] := N[(N[(x * N[(N[(y - z), $MachinePrecision] + 1.0), $MachinePrecision]), $MachinePrecision] / z), $MachinePrecision]
\begin{array}{l}
\\
\frac{x \cdot \left(\left(y - z\right) + 1\right)}{z}
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 8 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x y z) :precision binary64 (/ (* x (+ (- y z) 1.0)) z))
double code(double x, double y, double z) {
return (x * ((y - z) + 1.0)) / 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 - z) + 1.0d0)) / z
end function
public static double code(double x, double y, double z) {
return (x * ((y - z) + 1.0)) / z;
}
def code(x, y, z): return (x * ((y - z) + 1.0)) / z
function code(x, y, z) return Float64(Float64(x * Float64(Float64(y - z) + 1.0)) / z) end
function tmp = code(x, y, z) tmp = (x * ((y - z) + 1.0)) / z; end
code[x_, y_, z_] := N[(N[(x * N[(N[(y - z), $MachinePrecision] + 1.0), $MachinePrecision]), $MachinePrecision] / z), $MachinePrecision]
\begin{array}{l}
\\
\frac{x \cdot \left(\left(y - z\right) + 1\right)}{z}
\end{array}
x\_m = (fabs.f64 x)
x\_s = (copysign.f64 #s(literal 1 binary64) x)
(FPCore (x_s x_m y z)
:precision binary64
(*
x_s
(if (<= x_m 1.82e-41)
(/ (fma (- y z) x_m x_m) z)
(* (/ (+ 1.0 (- y z)) z) x_m))))x\_m = fabs(x);
x\_s = copysign(1.0, x);
double code(double x_s, double x_m, double y, double z) {
double tmp;
if (x_m <= 1.82e-41) {
tmp = fma((y - z), x_m, x_m) / z;
} else {
tmp = ((1.0 + (y - z)) / z) * x_m;
}
return x_s * tmp;
}
x\_m = abs(x) x\_s = copysign(1.0, x) function code(x_s, x_m, y, z) tmp = 0.0 if (x_m <= 1.82e-41) tmp = Float64(fma(Float64(y - z), x_m, x_m) / z); else tmp = Float64(Float64(Float64(1.0 + Float64(y - z)) / z) * x_m); end return Float64(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]
code[x$95$s_, x$95$m_, y_, z_] := N[(x$95$s * If[LessEqual[x$95$m, 1.82e-41], N[(N[(N[(y - z), $MachinePrecision] * x$95$m + x$95$m), $MachinePrecision] / z), $MachinePrecision], N[(N[(N[(1.0 + N[(y - z), $MachinePrecision]), $MachinePrecision] / z), $MachinePrecision] * x$95$m), $MachinePrecision]]), $MachinePrecision]
\begin{array}{l}
x\_m = \left|x\right|
\\
x\_s = \mathsf{copysign}\left(1, x\right)
\\
x\_s \cdot \begin{array}{l}
\mathbf{if}\;x\_m \leq 1.82 \cdot 10^{-41}:\\
\;\;\;\;\frac{\mathsf{fma}\left(y - z, x\_m, x\_m\right)}{z}\\
\mathbf{else}:\\
\;\;\;\;\frac{1 + \left(y - z\right)}{z} \cdot x\_m\\
\end{array}
\end{array}
if x < 1.81999999999999991e-41Initial program 92.1%
lift-*.f64N/A
lift-+.f64N/A
distribute-rgt-inN/A
*-lft-identityN/A
lower-fma.f6492.1
Applied rewrites92.1%
if 1.81999999999999991e-41 < x Initial program 76.5%
lift-/.f64N/A
lift-*.f64N/A
associate-/l*N/A
*-commutativeN/A
lower-*.f64N/A
lower-/.f6499.9
lift-+.f64N/A
+-commutativeN/A
lower-+.f6499.9
Applied rewrites99.9%
x\_m = (fabs.f64 x)
x\_s = (copysign.f64 #s(literal 1 binary64) x)
(FPCore (x_s x_m y z)
:precision binary64
(*
x_s
(if (or (<= z -5.5e+18) (not (<= z 8.5e+15)))
(- x_m)
(/ (fma y x_m x_m) z))))x\_m = fabs(x);
x\_s = copysign(1.0, x);
double code(double x_s, double x_m, double y, double z) {
double tmp;
if ((z <= -5.5e+18) || !(z <= 8.5e+15)) {
tmp = -x_m;
} else {
tmp = fma(y, x_m, x_m) / z;
}
return x_s * tmp;
}
x\_m = abs(x) x\_s = copysign(1.0, x) function code(x_s, x_m, y, z) tmp = 0.0 if ((z <= -5.5e+18) || !(z <= 8.5e+15)) tmp = Float64(-x_m); else tmp = Float64(fma(y, x_m, x_m) / z); end return Float64(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]
code[x$95$s_, x$95$m_, y_, z_] := N[(x$95$s * If[Or[LessEqual[z, -5.5e+18], N[Not[LessEqual[z, 8.5e+15]], $MachinePrecision]], (-x$95$m), N[(N[(y * x$95$m + x$95$m), $MachinePrecision] / z), $MachinePrecision]]), $MachinePrecision]
\begin{array}{l}
x\_m = \left|x\right|
\\
x\_s = \mathsf{copysign}\left(1, x\right)
\\
x\_s \cdot \begin{array}{l}
\mathbf{if}\;z \leq -5.5 \cdot 10^{+18} \lor \neg \left(z \leq 8.5 \cdot 10^{+15}\right):\\
\;\;\;\;-x\_m\\
\mathbf{else}:\\
\;\;\;\;\frac{\mathsf{fma}\left(y, x\_m, x\_m\right)}{z}\\
\end{array}
\end{array}
if z < -5.5e18 or 8.5e15 < z Initial program 72.2%
Taylor expanded in z around inf
mul-1-negN/A
lower-neg.f6478.5
Applied rewrites78.5%
if -5.5e18 < z < 8.5e15Initial program 99.8%
Taylor expanded in z around 0
+-commutativeN/A
distribute-rgt-inN/A
*-lft-identityN/A
lower-fma.f6497.3
Applied rewrites97.3%
Final simplification89.0%
x\_m = (fabs.f64 x)
x\_s = (copysign.f64 #s(literal 1 binary64) x)
(FPCore (x_s x_m y z)
:precision binary64
(*
x_s
(if (or (<= y -2.6e+16) (not (<= y 3.6e+120)))
(* (/ x_m z) y)
(- (/ x_m z) x_m))))x\_m = fabs(x);
x\_s = copysign(1.0, x);
double code(double x_s, double x_m, double y, double z) {
double tmp;
if ((y <= -2.6e+16) || !(y <= 3.6e+120)) {
tmp = (x_m / z) * y;
} else {
tmp = (x_m / z) - x_m;
}
return x_s * tmp;
}
x\_m = abs(x)
x\_s = copysign(1.0d0, x)
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 <= (-2.6d+16)) .or. (.not. (y <= 3.6d+120))) then
tmp = (x_m / z) * y
else
tmp = (x_m / z) - x_m
end if
code = x_s * tmp
end function
x\_m = Math.abs(x);
x\_s = Math.copySign(1.0, x);
public static double code(double x_s, double x_m, double y, double z) {
double tmp;
if ((y <= -2.6e+16) || !(y <= 3.6e+120)) {
tmp = (x_m / z) * y;
} else {
tmp = (x_m / z) - x_m;
}
return x_s * tmp;
}
x\_m = math.fabs(x) x\_s = math.copysign(1.0, x) def code(x_s, x_m, y, z): tmp = 0 if (y <= -2.6e+16) or not (y <= 3.6e+120): tmp = (x_m / z) * y else: tmp = (x_m / z) - x_m return x_s * tmp
x\_m = abs(x) x\_s = copysign(1.0, x) function code(x_s, x_m, y, z) tmp = 0.0 if ((y <= -2.6e+16) || !(y <= 3.6e+120)) tmp = Float64(Float64(x_m / z) * y); else tmp = Float64(Float64(x_m / z) - x_m); end return Float64(x_s * tmp) end
x\_m = abs(x); x\_s = sign(x) * abs(1.0); function tmp_2 = code(x_s, x_m, y, z) tmp = 0.0; if ((y <= -2.6e+16) || ~((y <= 3.6e+120))) tmp = (x_m / z) * y; else tmp = (x_m / z) - 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]
code[x$95$s_, x$95$m_, y_, z_] := N[(x$95$s * If[Or[LessEqual[y, -2.6e+16], N[Not[LessEqual[y, 3.6e+120]], $MachinePrecision]], N[(N[(x$95$m / z), $MachinePrecision] * y), $MachinePrecision], N[(N[(x$95$m / z), $MachinePrecision] - x$95$m), $MachinePrecision]]), $MachinePrecision]
\begin{array}{l}
x\_m = \left|x\right|
\\
x\_s = \mathsf{copysign}\left(1, x\right)
\\
x\_s \cdot \begin{array}{l}
\mathbf{if}\;y \leq -2.6 \cdot 10^{+16} \lor \neg \left(y \leq 3.6 \cdot 10^{+120}\right):\\
\;\;\;\;\frac{x\_m}{z} \cdot y\\
\mathbf{else}:\\
\;\;\;\;\frac{x\_m}{z} - x\_m\\
\end{array}
\end{array}
if y < -2.6e16 or 3.60000000000000016e120 < y Initial program 88.9%
lift-/.f64N/A
lift-*.f64N/A
associate-/l*N/A
*-commutativeN/A
lower-*.f64N/A
lower-/.f6493.1
lift-+.f64N/A
+-commutativeN/A
lower-+.f6493.1
Applied rewrites93.1%
Taylor expanded in y around inf
associate-*l/N/A
lower-*.f64N/A
lower-/.f6475.0
Applied rewrites75.0%
if -2.6e16 < y < 3.60000000000000016e120Initial program 86.6%
Taylor expanded in y around 0
associate-/l*N/A
div-subN/A
*-inversesN/A
distribute-lft-out--N/A
*-rgt-identityN/A
associate-*r/N/A
*-rgt-identityN/A
lower--.f64N/A
lower-/.f6491.0
Applied rewrites91.0%
Final simplification84.1%
x\_m = (fabs.f64 x)
x\_s = (copysign.f64 #s(literal 1 binary64) x)
(FPCore (x_s x_m y z)
:precision binary64
(*
x_s
(if (<= y -2.6e+16)
(* (/ x_m z) y)
(if (<= y 3.6e+120) (- (/ x_m z) x_m) (/ (* y x_m) z)))))x\_m = fabs(x);
x\_s = copysign(1.0, x);
double code(double x_s, double x_m, double y, double z) {
double tmp;
if (y <= -2.6e+16) {
tmp = (x_m / z) * y;
} else if (y <= 3.6e+120) {
tmp = (x_m / z) - x_m;
} else {
tmp = (y * x_m) / z;
}
return x_s * tmp;
}
x\_m = abs(x)
x\_s = copysign(1.0d0, x)
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 <= (-2.6d+16)) then
tmp = (x_m / z) * y
else if (y <= 3.6d+120) then
tmp = (x_m / z) - x_m
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);
public static double code(double x_s, double x_m, double y, double z) {
double tmp;
if (y <= -2.6e+16) {
tmp = (x_m / z) * y;
} else if (y <= 3.6e+120) {
tmp = (x_m / z) - x_m;
} else {
tmp = (y * x_m) / z;
}
return x_s * tmp;
}
x\_m = math.fabs(x) x\_s = math.copysign(1.0, x) def code(x_s, x_m, y, z): tmp = 0 if y <= -2.6e+16: tmp = (x_m / z) * y elif y <= 3.6e+120: tmp = (x_m / z) - x_m else: tmp = (y * x_m) / z return x_s * tmp
x\_m = abs(x) x\_s = copysign(1.0, x) function code(x_s, x_m, y, z) tmp = 0.0 if (y <= -2.6e+16) tmp = Float64(Float64(x_m / z) * y); elseif (y <= 3.6e+120) tmp = Float64(Float64(x_m / z) - x_m); else tmp = Float64(Float64(y * x_m) / z); end return Float64(x_s * tmp) end
x\_m = abs(x); x\_s = sign(x) * abs(1.0); function tmp_2 = code(x_s, x_m, y, z) tmp = 0.0; if (y <= -2.6e+16) tmp = (x_m / z) * y; elseif (y <= 3.6e+120) tmp = (x_m / z) - x_m; 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]
code[x$95$s_, x$95$m_, y_, z_] := N[(x$95$s * If[LessEqual[y, -2.6e+16], N[(N[(x$95$m / z), $MachinePrecision] * y), $MachinePrecision], If[LessEqual[y, 3.6e+120], N[(N[(x$95$m / z), $MachinePrecision] - x$95$m), $MachinePrecision], N[(N[(y * x$95$m), $MachinePrecision] / z), $MachinePrecision]]]), $MachinePrecision]
\begin{array}{l}
x\_m = \left|x\right|
\\
x\_s = \mathsf{copysign}\left(1, x\right)
\\
x\_s \cdot \begin{array}{l}
\mathbf{if}\;y \leq -2.6 \cdot 10^{+16}:\\
\;\;\;\;\frac{x\_m}{z} \cdot y\\
\mathbf{elif}\;y \leq 3.6 \cdot 10^{+120}:\\
\;\;\;\;\frac{x\_m}{z} - x\_m\\
\mathbf{else}:\\
\;\;\;\;\frac{y \cdot x\_m}{z}\\
\end{array}
\end{array}
if y < -2.6e16Initial program 90.0%
lift-/.f64N/A
lift-*.f64N/A
associate-/l*N/A
*-commutativeN/A
lower-*.f64N/A
lower-/.f6492.8
lift-+.f64N/A
+-commutativeN/A
lower-+.f6492.8
Applied rewrites92.8%
Taylor expanded in y around inf
associate-*l/N/A
lower-*.f64N/A
lower-/.f6473.2
Applied rewrites73.2%
if -2.6e16 < y < 3.60000000000000016e120Initial program 86.6%
Taylor expanded in y around 0
associate-/l*N/A
div-subN/A
*-inversesN/A
distribute-lft-out--N/A
*-rgt-identityN/A
associate-*r/N/A
*-rgt-identityN/A
lower--.f64N/A
lower-/.f6491.0
Applied rewrites91.0%
if 3.60000000000000016e120 < y Initial program 87.1%
Taylor expanded in y around inf
*-commutativeN/A
lower-*.f6478.0
Applied rewrites78.0%
Final simplification84.2%
x\_m = (fabs.f64 x)
x\_s = (copysign.f64 #s(literal 1 binary64) x)
(FPCore (x_s x_m y z)
:precision binary64
(*
x_s
(if (<= x_m 2e+33)
(/ (fma (- y z) x_m x_m) z)
(* (/ x_m z) (+ 1.0 (- y z))))))x\_m = fabs(x);
x\_s = copysign(1.0, x);
double code(double x_s, double x_m, double y, double z) {
double tmp;
if (x_m <= 2e+33) {
tmp = fma((y - z), x_m, x_m) / z;
} else {
tmp = (x_m / z) * (1.0 + (y - z));
}
return x_s * tmp;
}
x\_m = abs(x) x\_s = copysign(1.0, x) function code(x_s, x_m, y, z) tmp = 0.0 if (x_m <= 2e+33) tmp = Float64(fma(Float64(y - z), x_m, x_m) / z); else tmp = Float64(Float64(x_m / z) * Float64(1.0 + Float64(y - z))); end return Float64(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]
code[x$95$s_, x$95$m_, y_, z_] := N[(x$95$s * If[LessEqual[x$95$m, 2e+33], N[(N[(N[(y - z), $MachinePrecision] * x$95$m + x$95$m), $MachinePrecision] / z), $MachinePrecision], N[(N[(x$95$m / z), $MachinePrecision] * N[(1.0 + N[(y - z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]), $MachinePrecision]
\begin{array}{l}
x\_m = \left|x\right|
\\
x\_s = \mathsf{copysign}\left(1, x\right)
\\
x\_s \cdot \begin{array}{l}
\mathbf{if}\;x\_m \leq 2 \cdot 10^{+33}:\\
\;\;\;\;\frac{\mathsf{fma}\left(y - z, x\_m, x\_m\right)}{z}\\
\mathbf{else}:\\
\;\;\;\;\frac{x\_m}{z} \cdot \left(1 + \left(y - z\right)\right)\\
\end{array}
\end{array}
if x < 1.9999999999999999e33Initial program 92.8%
lift-*.f64N/A
lift-+.f64N/A
distribute-rgt-inN/A
*-lft-identityN/A
lower-fma.f6492.8
Applied rewrites92.8%
if 1.9999999999999999e33 < x Initial program 69.5%
lift-/.f64N/A
lift-*.f64N/A
*-commutativeN/A
associate-/l*N/A
*-commutativeN/A
lower-*.f64N/A
lower-/.f6499.9
lift-+.f64N/A
+-commutativeN/A
lower-+.f6499.9
Applied rewrites99.9%
x\_m = (fabs.f64 x) x\_s = (copysign.f64 #s(literal 1 binary64) x) (FPCore (x_s x_m y z) :precision binary64 (* x_s (if (<= x_m 3.2e+189) (/ (fma (- y z) x_m x_m) z) (- (/ x_m z) x_m))))
x\_m = fabs(x);
x\_s = copysign(1.0, x);
double code(double x_s, double x_m, double y, double z) {
double tmp;
if (x_m <= 3.2e+189) {
tmp = fma((y - z), x_m, x_m) / z;
} else {
tmp = (x_m / z) - x_m;
}
return x_s * tmp;
}
x\_m = abs(x) x\_s = copysign(1.0, x) function code(x_s, x_m, y, z) tmp = 0.0 if (x_m <= 3.2e+189) tmp = Float64(fma(Float64(y - z), x_m, x_m) / z); else tmp = Float64(Float64(x_m / z) - x_m); end return Float64(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]
code[x$95$s_, x$95$m_, y_, z_] := N[(x$95$s * If[LessEqual[x$95$m, 3.2e+189], N[(N[(N[(y - z), $MachinePrecision] * x$95$m + x$95$m), $MachinePrecision] / z), $MachinePrecision], N[(N[(x$95$m / z), $MachinePrecision] - x$95$m), $MachinePrecision]]), $MachinePrecision]
\begin{array}{l}
x\_m = \left|x\right|
\\
x\_s = \mathsf{copysign}\left(1, x\right)
\\
x\_s \cdot \begin{array}{l}
\mathbf{if}\;x\_m \leq 3.2 \cdot 10^{+189}:\\
\;\;\;\;\frac{\mathsf{fma}\left(y - z, x\_m, x\_m\right)}{z}\\
\mathbf{else}:\\
\;\;\;\;\frac{x\_m}{z} - x\_m\\
\end{array}
\end{array}
if x < 3.2000000000000001e189Initial program 92.4%
lift-*.f64N/A
lift-+.f64N/A
distribute-rgt-inN/A
*-lft-identityN/A
lower-fma.f6492.4
Applied rewrites92.4%
if 3.2000000000000001e189 < x Initial program 53.1%
Taylor expanded in y around 0
associate-/l*N/A
div-subN/A
*-inversesN/A
distribute-lft-out--N/A
*-rgt-identityN/A
associate-*r/N/A
*-rgt-identityN/A
lower--.f64N/A
lower-/.f6478.4
Applied rewrites78.4%
x\_m = (fabs.f64 x) x\_s = (copysign.f64 #s(literal 1 binary64) x) (FPCore (x_s x_m y z) :precision binary64 (* x_s (- (/ x_m z) x_m)))
x\_m = fabs(x);
x\_s = copysign(1.0, x);
double code(double x_s, double x_m, double y, double z) {
return x_s * ((x_m / z) - x_m);
}
x\_m = abs(x)
x\_s = copysign(1.0d0, x)
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 / z) - x_m)
end function
x\_m = Math.abs(x);
x\_s = Math.copySign(1.0, x);
public static double code(double x_s, double x_m, double y, double z) {
return x_s * ((x_m / z) - x_m);
}
x\_m = math.fabs(x) x\_s = math.copysign(1.0, x) def code(x_s, x_m, y, z): return x_s * ((x_m / z) - x_m)
x\_m = abs(x) x\_s = copysign(1.0, x) function code(x_s, x_m, y, z) return Float64(x_s * Float64(Float64(x_m / z) - x_m)) end
x\_m = abs(x); x\_s = sign(x) * abs(1.0); function tmp = code(x_s, x_m, y, z) tmp = x_s * ((x_m / z) - 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]
code[x$95$s_, x$95$m_, y_, z_] := N[(x$95$s * N[(N[(x$95$m / z), $MachinePrecision] - x$95$m), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
x\_m = \left|x\right|
\\
x\_s = \mathsf{copysign}\left(1, x\right)
\\
x\_s \cdot \left(\frac{x\_m}{z} - x\_m\right)
\end{array}
Initial program 87.6%
Taylor expanded in y around 0
associate-/l*N/A
div-subN/A
*-inversesN/A
distribute-lft-out--N/A
*-rgt-identityN/A
associate-*r/N/A
*-rgt-identityN/A
lower--.f64N/A
lower-/.f6462.1
Applied rewrites62.1%
x\_m = (fabs.f64 x) x\_s = (copysign.f64 #s(literal 1 binary64) x) (FPCore (x_s x_m y z) :precision binary64 (* x_s (- x_m)))
x\_m = fabs(x);
x\_s = copysign(1.0, x);
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)
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);
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) def code(x_s, x_m, y, z): return x_s * -x_m
x\_m = abs(x) x\_s = copysign(1.0, x) function code(x_s, x_m, y, z) return Float64(x_s * Float64(-x_m)) end
x\_m = abs(x); x\_s = sign(x) * abs(1.0); 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]
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\_s \cdot \left(-x\_m\right)
\end{array}
Initial program 87.6%
Taylor expanded in z around inf
mul-1-negN/A
lower-neg.f6436.9
Applied rewrites36.9%
(FPCore (x y z)
:precision binary64
(let* ((t_0 (- (* (+ 1.0 y) (/ x z)) x)))
(if (< x -2.71483106713436e-162)
t_0
(if (< x 3.874108816439546e-197)
(* (* x (+ (- y z) 1.0)) (/ 1.0 z))
t_0))))
double code(double x, double y, double z) {
double t_0 = ((1.0 + y) * (x / z)) - x;
double tmp;
if (x < -2.71483106713436e-162) {
tmp = t_0;
} else if (x < 3.874108816439546e-197) {
tmp = (x * ((y - z) + 1.0)) * (1.0 / z);
} else {
tmp = t_0;
}
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) :: t_0
real(8) :: tmp
t_0 = ((1.0d0 + y) * (x / z)) - x
if (x < (-2.71483106713436d-162)) then
tmp = t_0
else if (x < 3.874108816439546d-197) then
tmp = (x * ((y - z) + 1.0d0)) * (1.0d0 / z)
else
tmp = t_0
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double t_0 = ((1.0 + y) * (x / z)) - x;
double tmp;
if (x < -2.71483106713436e-162) {
tmp = t_0;
} else if (x < 3.874108816439546e-197) {
tmp = (x * ((y - z) + 1.0)) * (1.0 / z);
} else {
tmp = t_0;
}
return tmp;
}
def code(x, y, z): t_0 = ((1.0 + y) * (x / z)) - x tmp = 0 if x < -2.71483106713436e-162: tmp = t_0 elif x < 3.874108816439546e-197: tmp = (x * ((y - z) + 1.0)) * (1.0 / z) else: tmp = t_0 return tmp
function code(x, y, z) t_0 = Float64(Float64(Float64(1.0 + y) * Float64(x / z)) - x) tmp = 0.0 if (x < -2.71483106713436e-162) tmp = t_0; elseif (x < 3.874108816439546e-197) tmp = Float64(Float64(x * Float64(Float64(y - z) + 1.0)) * Float64(1.0 / z)); else tmp = t_0; end return tmp end
function tmp_2 = code(x, y, z) t_0 = ((1.0 + y) * (x / z)) - x; tmp = 0.0; if (x < -2.71483106713436e-162) tmp = t_0; elseif (x < 3.874108816439546e-197) tmp = (x * ((y - z) + 1.0)) * (1.0 / z); else tmp = t_0; end tmp_2 = tmp; end
code[x_, y_, z_] := Block[{t$95$0 = N[(N[(N[(1.0 + y), $MachinePrecision] * N[(x / z), $MachinePrecision]), $MachinePrecision] - x), $MachinePrecision]}, If[Less[x, -2.71483106713436e-162], t$95$0, If[Less[x, 3.874108816439546e-197], N[(N[(x * N[(N[(y - z), $MachinePrecision] + 1.0), $MachinePrecision]), $MachinePrecision] * N[(1.0 / z), $MachinePrecision]), $MachinePrecision], t$95$0]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := \left(1 + y\right) \cdot \frac{x}{z} - x\\
\mathbf{if}\;x < -2.71483106713436 \cdot 10^{-162}:\\
\;\;\;\;t\_0\\
\mathbf{elif}\;x < 3.874108816439546 \cdot 10^{-197}:\\
\;\;\;\;\left(x \cdot \left(\left(y - z\right) + 1\right)\right) \cdot \frac{1}{z}\\
\mathbf{else}:\\
\;\;\;\;t\_0\\
\end{array}
\end{array}
herbie shell --seed 2024337
(FPCore (x y z)
:name "Diagrams.TwoD.Segment.Bernstein:evaluateBernstein from diagrams-lib-1.3.0.3"
:precision binary64
:alt
(! :herbie-platform default (if (< x -67870776678359/25000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000) (- (* (+ 1 y) (/ x z)) x) (if (< x 1937054408219773/50000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000) (* (* x (+ (- y z) 1)) (/ 1 z)) (- (* (+ 1 y) (/ x z)) x))))
(/ (* x (+ (- y z) 1.0)) z))