
(FPCore (x y z) :precision binary64 (* (+ x y) (+ z 1.0)))
double code(double x, double y, double z) {
return (x + y) * (z + 1.0);
}
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)
end function
public static double code(double x, double y, double z) {
return (x + y) * (z + 1.0);
}
def code(x, y, z): return (x + y) * (z + 1.0)
function code(x, y, z) return Float64(Float64(x + y) * Float64(z + 1.0)) end
function tmp = code(x, y, z) tmp = (x + y) * (z + 1.0); end
code[x_, y_, z_] := N[(N[(x + y), $MachinePrecision] * N[(z + 1.0), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\left(x + y\right) \cdot \left(z + 1\right)
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 6 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x y z) :precision binary64 (* (+ x y) (+ z 1.0)))
double code(double x, double y, double z) {
return (x + y) * (z + 1.0);
}
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)
end function
public static double code(double x, double y, double z) {
return (x + y) * (z + 1.0);
}
def code(x, y, z): return (x + y) * (z + 1.0)
function code(x, y, z) return Float64(Float64(x + y) * Float64(z + 1.0)) end
function tmp = code(x, y, z) tmp = (x + y) * (z + 1.0); end
code[x_, y_, z_] := N[(N[(x + y), $MachinePrecision] * N[(z + 1.0), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\left(x + y\right) \cdot \left(z + 1\right)
\end{array}
(FPCore (x y z) :precision binary64 (* (+ x y) (+ z 1.0)))
double code(double x, double y, double z) {
return (x + y) * (z + 1.0);
}
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)
end function
public static double code(double x, double y, double z) {
return (x + y) * (z + 1.0);
}
def code(x, y, z): return (x + y) * (z + 1.0)
function code(x, y, z) return Float64(Float64(x + y) * Float64(z + 1.0)) end
function tmp = code(x, y, z) tmp = (x + y) * (z + 1.0); end
code[x_, y_, z_] := N[(N[(x + y), $MachinePrecision] * N[(z + 1.0), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\left(x + y\right) \cdot \left(z + 1\right)
\end{array}
Initial program 100.0%
(FPCore (x y z)
:precision binary64
(if (<= (+ z 1.0) -5e+172)
(* x z)
(if (<= (+ z 1.0) -50.0)
(* y z)
(if (<= (+ z 1.0) 1.0) (+ y x) (fma z x x)))))
double code(double x, double y, double z) {
double tmp;
if ((z + 1.0) <= -5e+172) {
tmp = x * z;
} else if ((z + 1.0) <= -50.0) {
tmp = y * z;
} else if ((z + 1.0) <= 1.0) {
tmp = y + x;
} else {
tmp = fma(z, x, x);
}
return tmp;
}
function code(x, y, z) tmp = 0.0 if (Float64(z + 1.0) <= -5e+172) tmp = Float64(x * z); elseif (Float64(z + 1.0) <= -50.0) tmp = Float64(y * z); elseif (Float64(z + 1.0) <= 1.0) tmp = Float64(y + x); else tmp = fma(z, x, x); end return tmp end
code[x_, y_, z_] := If[LessEqual[N[(z + 1.0), $MachinePrecision], -5e+172], N[(x * z), $MachinePrecision], If[LessEqual[N[(z + 1.0), $MachinePrecision], -50.0], N[(y * z), $MachinePrecision], If[LessEqual[N[(z + 1.0), $MachinePrecision], 1.0], N[(y + x), $MachinePrecision], N[(z * x + x), $MachinePrecision]]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z + 1 \leq -5 \cdot 10^{+172}:\\
\;\;\;\;x \cdot z\\
\mathbf{elif}\;z + 1 \leq -50:\\
\;\;\;\;y \cdot z\\
\mathbf{elif}\;z + 1 \leq 1:\\
\;\;\;\;y + x\\
\mathbf{else}:\\
\;\;\;\;\mathsf{fma}\left(z, x, x\right)\\
\end{array}
\end{array}
if (+.f64 z #s(literal 1 binary64)) < -5.0000000000000001e172Initial program 100.0%
Taylor expanded in z around inf
*-commutativeN/A
lower-*.f64N/A
+-commutativeN/A
lower-+.f64100.0
Applied rewrites100.0%
Taylor expanded in x around inf
Applied rewrites55.5%
if -5.0000000000000001e172 < (+.f64 z #s(literal 1 binary64)) < -50Initial program 100.0%
Taylor expanded in z around inf
*-commutativeN/A
lower-*.f64N/A
+-commutativeN/A
lower-+.f6495.3
Applied rewrites95.3%
Taylor expanded in x around 0
Applied rewrites57.4%
if -50 < (+.f64 z #s(literal 1 binary64)) < 1Initial program 100.0%
Taylor expanded in z around inf
*-commutativeN/A
lower-*.f64N/A
+-commutativeN/A
lower-+.f643.7
Applied rewrites3.7%
Taylor expanded in x around inf
Applied rewrites3.0%
Taylor expanded in z around 0
+-commutativeN/A
lower-+.f6499.6
Applied rewrites99.6%
if 1 < (+.f64 z #s(literal 1 binary64)) Initial program 99.9%
Taylor expanded in x around inf
+-commutativeN/A
distribute-rgt-inN/A
*-lft-identityN/A
lower-fma.f6455.3
Applied rewrites55.3%
(FPCore (x y z) :precision binary64 (if (<= (+ z 1.0) -5e+172) (* x z) (if (<= (+ z 1.0) -50.0) (* y z) (if (<= (+ z 1.0) 2.0) (+ y x) (* x z)))))
double code(double x, double y, double z) {
double tmp;
if ((z + 1.0) <= -5e+172) {
tmp = x * z;
} else if ((z + 1.0) <= -50.0) {
tmp = y * z;
} else if ((z + 1.0) <= 2.0) {
tmp = y + x;
} else {
tmp = x * z;
}
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 + 1.0d0) <= (-5d+172)) then
tmp = x * z
else if ((z + 1.0d0) <= (-50.0d0)) then
tmp = y * z
else if ((z + 1.0d0) <= 2.0d0) then
tmp = y + x
else
tmp = x * z
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if ((z + 1.0) <= -5e+172) {
tmp = x * z;
} else if ((z + 1.0) <= -50.0) {
tmp = y * z;
} else if ((z + 1.0) <= 2.0) {
tmp = y + x;
} else {
tmp = x * z;
}
return tmp;
}
def code(x, y, z): tmp = 0 if (z + 1.0) <= -5e+172: tmp = x * z elif (z + 1.0) <= -50.0: tmp = y * z elif (z + 1.0) <= 2.0: tmp = y + x else: tmp = x * z return tmp
function code(x, y, z) tmp = 0.0 if (Float64(z + 1.0) <= -5e+172) tmp = Float64(x * z); elseif (Float64(z + 1.0) <= -50.0) tmp = Float64(y * z); elseif (Float64(z + 1.0) <= 2.0) tmp = Float64(y + x); else tmp = Float64(x * z); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((z + 1.0) <= -5e+172) tmp = x * z; elseif ((z + 1.0) <= -50.0) tmp = y * z; elseif ((z + 1.0) <= 2.0) tmp = y + x; else tmp = x * z; end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[N[(z + 1.0), $MachinePrecision], -5e+172], N[(x * z), $MachinePrecision], If[LessEqual[N[(z + 1.0), $MachinePrecision], -50.0], N[(y * z), $MachinePrecision], If[LessEqual[N[(z + 1.0), $MachinePrecision], 2.0], N[(y + x), $MachinePrecision], N[(x * z), $MachinePrecision]]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z + 1 \leq -5 \cdot 10^{+172}:\\
\;\;\;\;x \cdot z\\
\mathbf{elif}\;z + 1 \leq -50:\\
\;\;\;\;y \cdot z\\
\mathbf{elif}\;z + 1 \leq 2:\\
\;\;\;\;y + x\\
\mathbf{else}:\\
\;\;\;\;x \cdot z\\
\end{array}
\end{array}
if (+.f64 z #s(literal 1 binary64)) < -5.0000000000000001e172 or 2 < (+.f64 z #s(literal 1 binary64)) Initial program 100.0%
Taylor expanded in z around inf
*-commutativeN/A
lower-*.f64N/A
+-commutativeN/A
lower-+.f6498.7
Applied rewrites98.7%
Taylor expanded in x around inf
Applied rewrites55.3%
if -5.0000000000000001e172 < (+.f64 z #s(literal 1 binary64)) < -50Initial program 100.0%
Taylor expanded in z around inf
*-commutativeN/A
lower-*.f64N/A
+-commutativeN/A
lower-+.f6495.3
Applied rewrites95.3%
Taylor expanded in x around 0
Applied rewrites57.4%
if -50 < (+.f64 z #s(literal 1 binary64)) < 2Initial program 100.0%
Taylor expanded in z around inf
*-commutativeN/A
lower-*.f64N/A
+-commutativeN/A
lower-+.f643.8
Applied rewrites3.8%
Taylor expanded in x around inf
Applied rewrites3.1%
Taylor expanded in z around 0
+-commutativeN/A
lower-+.f6498.8
Applied rewrites98.8%
(FPCore (x y z) :precision binary64 (if (or (<= (+ z 1.0) -50.0) (not (<= (+ z 1.0) 2.0))) (* x z) (+ y x)))
double code(double x, double y, double z) {
double tmp;
if (((z + 1.0) <= -50.0) || !((z + 1.0) <= 2.0)) {
tmp = x * z;
} else {
tmp = y + 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 + 1.0d0) <= (-50.0d0)) .or. (.not. ((z + 1.0d0) <= 2.0d0))) then
tmp = x * z
else
tmp = y + x
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if (((z + 1.0) <= -50.0) || !((z + 1.0) <= 2.0)) {
tmp = x * z;
} else {
tmp = y + x;
}
return tmp;
}
def code(x, y, z): tmp = 0 if ((z + 1.0) <= -50.0) or not ((z + 1.0) <= 2.0): tmp = x * z else: tmp = y + x return tmp
function code(x, y, z) tmp = 0.0 if ((Float64(z + 1.0) <= -50.0) || !(Float64(z + 1.0) <= 2.0)) tmp = Float64(x * z); else tmp = Float64(y + x); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if (((z + 1.0) <= -50.0) || ~(((z + 1.0) <= 2.0))) tmp = x * z; else tmp = y + x; end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[N[(z + 1.0), $MachinePrecision], -50.0], N[Not[LessEqual[N[(z + 1.0), $MachinePrecision], 2.0]], $MachinePrecision]], N[(x * z), $MachinePrecision], N[(y + x), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z + 1 \leq -50 \lor \neg \left(z + 1 \leq 2\right):\\
\;\;\;\;x \cdot z\\
\mathbf{else}:\\
\;\;\;\;y + x\\
\end{array}
\end{array}
if (+.f64 z #s(literal 1 binary64)) < -50 or 2 < (+.f64 z #s(literal 1 binary64)) Initial program 100.0%
Taylor expanded in z around inf
*-commutativeN/A
lower-*.f64N/A
+-commutativeN/A
lower-+.f6497.8
Applied rewrites97.8%
Taylor expanded in x around inf
Applied rewrites51.8%
if -50 < (+.f64 z #s(literal 1 binary64)) < 2Initial program 100.0%
Taylor expanded in z around inf
*-commutativeN/A
lower-*.f64N/A
+-commutativeN/A
lower-+.f643.8
Applied rewrites3.8%
Taylor expanded in x around inf
Applied rewrites3.1%
Taylor expanded in z around 0
+-commutativeN/A
lower-+.f6498.8
Applied rewrites98.8%
Final simplification75.1%
(FPCore (x y z) :precision binary64 (if (<= (+ x y) -1e-251) (fma z x x) (fma z y y)))
double code(double x, double y, double z) {
double tmp;
if ((x + y) <= -1e-251) {
tmp = fma(z, x, x);
} else {
tmp = fma(z, y, y);
}
return tmp;
}
function code(x, y, z) tmp = 0.0 if (Float64(x + y) <= -1e-251) tmp = fma(z, x, x); else tmp = fma(z, y, y); end return tmp end
code[x_, y_, z_] := If[LessEqual[N[(x + y), $MachinePrecision], -1e-251], N[(z * x + x), $MachinePrecision], N[(z * y + y), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x + y \leq -1 \cdot 10^{-251}:\\
\;\;\;\;\mathsf{fma}\left(z, x, x\right)\\
\mathbf{else}:\\
\;\;\;\;\mathsf{fma}\left(z, y, y\right)\\
\end{array}
\end{array}
if (+.f64 x y) < -1.00000000000000002e-251Initial program 100.0%
Taylor expanded in x around inf
+-commutativeN/A
distribute-rgt-inN/A
*-lft-identityN/A
lower-fma.f6452.7
Applied rewrites52.7%
if -1.00000000000000002e-251 < (+.f64 x y) Initial program 100.0%
Taylor expanded in x around 0
+-commutativeN/A
distribute-rgt-inN/A
*-lft-identityN/A
lower-fma.f6459.6
Applied rewrites59.6%
(FPCore (x y z) :precision binary64 (+ y x))
double code(double x, double y, double z) {
return y + x;
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
code = y + x
end function
public static double code(double x, double y, double z) {
return y + x;
}
def code(x, y, z): return y + x
function code(x, y, z) return Float64(y + x) end
function tmp = code(x, y, z) tmp = y + x; end
code[x_, y_, z_] := N[(y + x), $MachinePrecision]
\begin{array}{l}
\\
y + x
\end{array}
Initial program 100.0%
Taylor expanded in z around inf
*-commutativeN/A
lower-*.f64N/A
+-commutativeN/A
lower-+.f6451.2
Applied rewrites51.2%
Taylor expanded in x around inf
Applied rewrites27.6%
Taylor expanded in z around 0
+-commutativeN/A
lower-+.f6450.7
Applied rewrites50.7%
herbie shell --seed 2024324
(FPCore (x y z)
:name "Optimisation.CirclePacking:place from circle-packing-0.1.0.4, G"
:precision binary64
(* (+ x y) (+ z 1.0)))