
(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) -500.0) (* z y) (if (<= (+ z 1.0) 2.0) (+ y x) (if (<= (+ z 1.0) 2e+60) (* z y) (* z x)))))
double code(double x, double y, double z) {
double tmp;
if ((z + 1.0) <= -500.0) {
tmp = z * y;
} else if ((z + 1.0) <= 2.0) {
tmp = y + x;
} else if ((z + 1.0) <= 2e+60) {
tmp = z * y;
} else {
tmp = z * 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) <= (-500.0d0)) then
tmp = z * y
else if ((z + 1.0d0) <= 2.0d0) then
tmp = y + x
else if ((z + 1.0d0) <= 2d+60) then
tmp = z * y
else
tmp = z * x
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if ((z + 1.0) <= -500.0) {
tmp = z * y;
} else if ((z + 1.0) <= 2.0) {
tmp = y + x;
} else if ((z + 1.0) <= 2e+60) {
tmp = z * y;
} else {
tmp = z * x;
}
return tmp;
}
def code(x, y, z): tmp = 0 if (z + 1.0) <= -500.0: tmp = z * y elif (z + 1.0) <= 2.0: tmp = y + x elif (z + 1.0) <= 2e+60: tmp = z * y else: tmp = z * x return tmp
function code(x, y, z) tmp = 0.0 if (Float64(z + 1.0) <= -500.0) tmp = Float64(z * y); elseif (Float64(z + 1.0) <= 2.0) tmp = Float64(y + x); elseif (Float64(z + 1.0) <= 2e+60) tmp = Float64(z * y); else tmp = Float64(z * x); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((z + 1.0) <= -500.0) tmp = z * y; elseif ((z + 1.0) <= 2.0) tmp = y + x; elseif ((z + 1.0) <= 2e+60) tmp = z * y; else tmp = z * x; end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[N[(z + 1.0), $MachinePrecision], -500.0], N[(z * y), $MachinePrecision], If[LessEqual[N[(z + 1.0), $MachinePrecision], 2.0], N[(y + x), $MachinePrecision], If[LessEqual[N[(z + 1.0), $MachinePrecision], 2e+60], N[(z * y), $MachinePrecision], N[(z * x), $MachinePrecision]]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z + 1 \leq -500:\\
\;\;\;\;z \cdot y\\
\mathbf{elif}\;z + 1 \leq 2:\\
\;\;\;\;y + x\\
\mathbf{elif}\;z + 1 \leq 2 \cdot 10^{+60}:\\
\;\;\;\;z \cdot y\\
\mathbf{else}:\\
\;\;\;\;z \cdot x\\
\end{array}
\end{array}
if (+.f64 z #s(literal 1 binary64)) < -500 or 2 < (+.f64 z #s(literal 1 binary64)) < 1.9999999999999999e60Initial program 100.0%
Taylor expanded in z around inf
*-commutativeN/A
lower-*.f64N/A
+-commutativeN/A
lower-+.f6496.7
Applied rewrites96.7%
Taylor expanded in x around 0
Applied rewrites61.8%
if -500 < (+.f64 z #s(literal 1 binary64)) < 2Initial program 100.0%
Taylor expanded in z around inf
*-commutativeN/A
lower-*.f64N/A
+-commutativeN/A
lower-+.f643.5
Applied rewrites3.5%
Taylor expanded in x around inf
Applied rewrites3.3%
Taylor expanded in z around 0
+-commutativeN/A
lower-+.f6497.1
Applied rewrites97.1%
if 1.9999999999999999e60 < (+.f64 z #s(literal 1 binary64)) Initial 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 rewrites33.7%
(FPCore (x y z) :precision binary64 (if (<= (+ z 1.0) -500.0) (* z y) (if (<= (+ z 1.0) 1.002) (+ y x) (fma z x x))))
double code(double x, double y, double z) {
double tmp;
if ((z + 1.0) <= -500.0) {
tmp = z * y;
} else if ((z + 1.0) <= 1.002) {
tmp = y + x;
} else {
tmp = fma(z, x, x);
}
return tmp;
}
function code(x, y, z) tmp = 0.0 if (Float64(z + 1.0) <= -500.0) tmp = Float64(z * y); elseif (Float64(z + 1.0) <= 1.002) 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], -500.0], N[(z * y), $MachinePrecision], If[LessEqual[N[(z + 1.0), $MachinePrecision], 1.002], N[(y + x), $MachinePrecision], N[(z * x + x), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z + 1 \leq -500:\\
\;\;\;\;z \cdot y\\
\mathbf{elif}\;z + 1 \leq 1.002:\\
\;\;\;\;y + x\\
\mathbf{else}:\\
\;\;\;\;\mathsf{fma}\left(z, x, x\right)\\
\end{array}
\end{array}
if (+.f64 z #s(literal 1 binary64)) < -500Initial 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 0
Applied rewrites61.2%
if -500 < (+.f64 z #s(literal 1 binary64)) < 1.002Initial program 100.0%
Taylor expanded in z around inf
*-commutativeN/A
lower-*.f64N/A
+-commutativeN/A
lower-+.f643.4
Applied rewrites3.4%
Taylor expanded in x around inf
Applied rewrites3.1%
Taylor expanded in z around 0
+-commutativeN/A
lower-+.f6498.2
Applied rewrites98.2%
if 1.002 < (+.f64 z #s(literal 1 binary64)) Initial program 100.0%
Taylor expanded in x around inf
+-commutativeN/A
distribute-rgt-inN/A
*-lft-identityN/A
lower-fma.f6435.6
Applied rewrites35.6%
(FPCore (x y z) :precision binary64 (if (or (<= (+ z 1.0) -500.0) (not (<= (+ z 1.0) 20000.0))) (* z x) (+ y x)))
double code(double x, double y, double z) {
double tmp;
if (((z + 1.0) <= -500.0) || !((z + 1.0) <= 20000.0)) {
tmp = z * x;
} 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) <= (-500.0d0)) .or. (.not. ((z + 1.0d0) <= 20000.0d0))) then
tmp = z * x
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) <= -500.0) || !((z + 1.0) <= 20000.0)) {
tmp = z * x;
} else {
tmp = y + x;
}
return tmp;
}
def code(x, y, z): tmp = 0 if ((z + 1.0) <= -500.0) or not ((z + 1.0) <= 20000.0): tmp = z * x else: tmp = y + x return tmp
function code(x, y, z) tmp = 0.0 if ((Float64(z + 1.0) <= -500.0) || !(Float64(z + 1.0) <= 20000.0)) tmp = Float64(z * x); else tmp = Float64(y + x); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if (((z + 1.0) <= -500.0) || ~(((z + 1.0) <= 20000.0))) tmp = z * x; else tmp = y + x; end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[N[(z + 1.0), $MachinePrecision], -500.0], N[Not[LessEqual[N[(z + 1.0), $MachinePrecision], 20000.0]], $MachinePrecision]], N[(z * x), $MachinePrecision], N[(y + x), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z + 1 \leq -500 \lor \neg \left(z + 1 \leq 20000\right):\\
\;\;\;\;z \cdot x\\
\mathbf{else}:\\
\;\;\;\;y + x\\
\end{array}
\end{array}
if (+.f64 z #s(literal 1 binary64)) < -500 or 2e4 < (+.f64 z #s(literal 1 binary64)) Initial program 100.0%
Taylor expanded in z around inf
*-commutativeN/A
lower-*.f64N/A
+-commutativeN/A
lower-+.f6497.9
Applied rewrites97.9%
Taylor expanded in x around inf
Applied rewrites39.4%
if -500 < (+.f64 z #s(literal 1 binary64)) < 2e4Initial program 100.0%
Taylor expanded in z around inf
*-commutativeN/A
lower-*.f64N/A
+-commutativeN/A
lower-+.f644.3
Applied rewrites4.3%
Taylor expanded in x around inf
Applied rewrites3.2%
Taylor expanded in z around 0
+-commutativeN/A
lower-+.f6496.5
Applied rewrites96.5%
Final simplification68.8%
(FPCore (x y z) :precision binary64 (if (<= (+ x y) -1e-293) (fma z x x) (fma z y y)))
double code(double x, double y, double z) {
double tmp;
if ((x + y) <= -1e-293) {
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-293) 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-293], N[(z * x + x), $MachinePrecision], N[(z * y + y), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x + y \leq -1 \cdot 10^{-293}:\\
\;\;\;\;\mathsf{fma}\left(z, x, x\right)\\
\mathbf{else}:\\
\;\;\;\;\mathsf{fma}\left(z, y, y\right)\\
\end{array}
\end{array}
if (+.f64 x y) < -1.0000000000000001e-293Initial program 100.0%
Taylor expanded in x around inf
+-commutativeN/A
distribute-rgt-inN/A
*-lft-identityN/A
lower-fma.f6443.0
Applied rewrites43.0%
if -1.0000000000000001e-293 < (+.f64 x y) Initial program 100.0%
Taylor expanded in x around 0
+-commutativeN/A
distribute-rgt-inN/A
*-lft-identityN/A
lower-fma.f6449.1
Applied rewrites49.1%
(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-+.f6449.6
Applied rewrites49.6%
Taylor expanded in x around inf
Applied rewrites20.8%
Taylor expanded in z around 0
+-commutativeN/A
lower-+.f6451.3
Applied rewrites51.3%
herbie shell --seed 2024313
(FPCore (x y z)
:name "Optimisation.CirclePacking:place from circle-packing-0.1.0.4, G"
:precision binary64
(* (+ x y) (+ z 1.0)))