
(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 (<= (+ x y) -5e+181)
(+ x y)
(if (<= (+ x y) -2e+79)
(* x z)
(if (<= (+ x y) -1e-75)
(+ x y)
(if (<= (+ x y) -1e-265) (* x z) (fma y z y))))))
double code(double x, double y, double z) {
double tmp;
if ((x + y) <= -5e+181) {
tmp = x + y;
} else if ((x + y) <= -2e+79) {
tmp = x * z;
} else if ((x + y) <= -1e-75) {
tmp = x + y;
} else if ((x + y) <= -1e-265) {
tmp = x * z;
} else {
tmp = fma(y, z, y);
}
return tmp;
}
function code(x, y, z) tmp = 0.0 if (Float64(x + y) <= -5e+181) tmp = Float64(x + y); elseif (Float64(x + y) <= -2e+79) tmp = Float64(x * z); elseif (Float64(x + y) <= -1e-75) tmp = Float64(x + y); elseif (Float64(x + y) <= -1e-265) tmp = Float64(x * z); else tmp = fma(y, z, y); end return tmp end
code[x_, y_, z_] := If[LessEqual[N[(x + y), $MachinePrecision], -5e+181], N[(x + y), $MachinePrecision], If[LessEqual[N[(x + y), $MachinePrecision], -2e+79], N[(x * z), $MachinePrecision], If[LessEqual[N[(x + y), $MachinePrecision], -1e-75], N[(x + y), $MachinePrecision], If[LessEqual[N[(x + y), $MachinePrecision], -1e-265], N[(x * z), $MachinePrecision], N[(y * z + y), $MachinePrecision]]]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x + y \leq -5 \cdot 10^{+181}:\\
\;\;\;\;x + y\\
\mathbf{elif}\;x + y \leq -2 \cdot 10^{+79}:\\
\;\;\;\;x \cdot z\\
\mathbf{elif}\;x + y \leq -1 \cdot 10^{-75}:\\
\;\;\;\;x + y\\
\mathbf{elif}\;x + y \leq -1 \cdot 10^{-265}:\\
\;\;\;\;x \cdot z\\
\mathbf{else}:\\
\;\;\;\;\mathsf{fma}\left(y, z, y\right)\\
\end{array}
\end{array}
if (+.f64 x y) < -5.0000000000000003e181 or -1.99999999999999993e79 < (+.f64 x y) < -9.9999999999999996e-76Initial program 100.0%
Taylor expanded in z around 0
+-commutativeN/A
lower-+.f6467.9
Applied rewrites67.9%
if -5.0000000000000003e181 < (+.f64 x y) < -1.99999999999999993e79 or -9.9999999999999996e-76 < (+.f64 x y) < -9.99999999999999985e-266Initial program 100.0%
Taylor expanded in x around inf
+-commutativeN/A
distribute-rgt-inN/A
*-lft-identityN/A
lower-fma.f6455.1
Applied rewrites55.1%
Taylor expanded in z around inf
Applied rewrites39.5%
if -9.99999999999999985e-266 < (+.f64 x y) Initial program 100.0%
Taylor expanded in x around 0
+-commutativeN/A
distribute-lft-inN/A
*-rgt-identityN/A
lower-fma.f6449.8
Applied rewrites49.8%
Final simplification52.6%
(FPCore (x y z)
:precision binary64
(if (<= (+ z 1.0) -5e+206)
(* y z)
(if (<= (+ z 1.0) -2.0)
(* x z)
(if (<= (+ z 1.0) 1000.0)
(+ x y)
(if (<= (+ z 1.0) 5.5e+181) (* y z) (* x z))))))
double code(double x, double y, double z) {
double tmp;
if ((z + 1.0) <= -5e+206) {
tmp = y * z;
} else if ((z + 1.0) <= -2.0) {
tmp = x * z;
} else if ((z + 1.0) <= 1000.0) {
tmp = x + y;
} else if ((z + 1.0) <= 5.5e+181) {
tmp = y * z;
} 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+206)) then
tmp = y * z
else if ((z + 1.0d0) <= (-2.0d0)) then
tmp = x * z
else if ((z + 1.0d0) <= 1000.0d0) then
tmp = x + y
else if ((z + 1.0d0) <= 5.5d+181) then
tmp = y * z
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+206) {
tmp = y * z;
} else if ((z + 1.0) <= -2.0) {
tmp = x * z;
} else if ((z + 1.0) <= 1000.0) {
tmp = x + y;
} else if ((z + 1.0) <= 5.5e+181) {
tmp = y * z;
} else {
tmp = x * z;
}
return tmp;
}
def code(x, y, z): tmp = 0 if (z + 1.0) <= -5e+206: tmp = y * z elif (z + 1.0) <= -2.0: tmp = x * z elif (z + 1.0) <= 1000.0: tmp = x + y elif (z + 1.0) <= 5.5e+181: tmp = y * z else: tmp = x * z return tmp
function code(x, y, z) tmp = 0.0 if (Float64(z + 1.0) <= -5e+206) tmp = Float64(y * z); elseif (Float64(z + 1.0) <= -2.0) tmp = Float64(x * z); elseif (Float64(z + 1.0) <= 1000.0) tmp = Float64(x + y); elseif (Float64(z + 1.0) <= 5.5e+181) tmp = Float64(y * z); else tmp = Float64(x * z); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((z + 1.0) <= -5e+206) tmp = y * z; elseif ((z + 1.0) <= -2.0) tmp = x * z; elseif ((z + 1.0) <= 1000.0) tmp = x + y; elseif ((z + 1.0) <= 5.5e+181) tmp = y * z; else tmp = x * z; end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[N[(z + 1.0), $MachinePrecision], -5e+206], N[(y * z), $MachinePrecision], If[LessEqual[N[(z + 1.0), $MachinePrecision], -2.0], N[(x * z), $MachinePrecision], If[LessEqual[N[(z + 1.0), $MachinePrecision], 1000.0], N[(x + y), $MachinePrecision], If[LessEqual[N[(z + 1.0), $MachinePrecision], 5.5e+181], N[(y * z), $MachinePrecision], N[(x * z), $MachinePrecision]]]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z + 1 \leq -5 \cdot 10^{+206}:\\
\;\;\;\;y \cdot z\\
\mathbf{elif}\;z + 1 \leq -2:\\
\;\;\;\;x \cdot z\\
\mathbf{elif}\;z + 1 \leq 1000:\\
\;\;\;\;x + y\\
\mathbf{elif}\;z + 1 \leq 5.5 \cdot 10^{+181}:\\
\;\;\;\;y \cdot z\\
\mathbf{else}:\\
\;\;\;\;x \cdot z\\
\end{array}
\end{array}
if (+.f64 z #s(literal 1 binary64)) < -5.0000000000000002e206 or 1e3 < (+.f64 z #s(literal 1 binary64)) < 5.49999999999999991e181Initial program 100.0%
Taylor expanded in x around 0
+-commutativeN/A
distribute-lft-inN/A
*-rgt-identityN/A
lower-fma.f6448.9
Applied rewrites48.9%
Taylor expanded in z around inf
Applied rewrites47.3%
if -5.0000000000000002e206 < (+.f64 z #s(literal 1 binary64)) < -2 or 5.49999999999999991e181 < (+.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.f6454.5
Applied rewrites54.5%
Taylor expanded in z around inf
Applied rewrites52.9%
if -2 < (+.f64 z #s(literal 1 binary64)) < 1e3Initial program 100.0%
Taylor expanded in z around 0
+-commutativeN/A
lower-+.f6496.5
Applied rewrites96.5%
Final simplification74.4%
(FPCore (x y z) :precision binary64 (if (<= (+ z 1.0) -2.0) (* y z) (if (<= (+ z 1.0) 1000.0) (+ x y) (* y z))))
double code(double x, double y, double z) {
double tmp;
if ((z + 1.0) <= -2.0) {
tmp = y * z;
} else if ((z + 1.0) <= 1000.0) {
tmp = x + y;
} else {
tmp = y * 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) <= (-2.0d0)) then
tmp = y * z
else if ((z + 1.0d0) <= 1000.0d0) then
tmp = x + y
else
tmp = y * z
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if ((z + 1.0) <= -2.0) {
tmp = y * z;
} else if ((z + 1.0) <= 1000.0) {
tmp = x + y;
} else {
tmp = y * z;
}
return tmp;
}
def code(x, y, z): tmp = 0 if (z + 1.0) <= -2.0: tmp = y * z elif (z + 1.0) <= 1000.0: tmp = x + y else: tmp = y * z return tmp
function code(x, y, z) tmp = 0.0 if (Float64(z + 1.0) <= -2.0) tmp = Float64(y * z); elseif (Float64(z + 1.0) <= 1000.0) tmp = Float64(x + y); else tmp = Float64(y * z); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((z + 1.0) <= -2.0) tmp = y * z; elseif ((z + 1.0) <= 1000.0) tmp = x + y; else tmp = y * z; end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[N[(z + 1.0), $MachinePrecision], -2.0], N[(y * z), $MachinePrecision], If[LessEqual[N[(z + 1.0), $MachinePrecision], 1000.0], N[(x + y), $MachinePrecision], N[(y * z), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z + 1 \leq -2:\\
\;\;\;\;y \cdot z\\
\mathbf{elif}\;z + 1 \leq 1000:\\
\;\;\;\;x + y\\
\mathbf{else}:\\
\;\;\;\;y \cdot z\\
\end{array}
\end{array}
if (+.f64 z #s(literal 1 binary64)) < -2 or 1e3 < (+.f64 z #s(literal 1 binary64)) Initial program 100.0%
Taylor expanded in x around 0
+-commutativeN/A
distribute-lft-inN/A
*-rgt-identityN/A
lower-fma.f6447.6
Applied rewrites47.6%
Taylor expanded in z around inf
Applied rewrites46.6%
if -2 < (+.f64 z #s(literal 1 binary64)) < 1e3Initial program 100.0%
Taylor expanded in z around 0
+-commutativeN/A
lower-+.f6496.5
Applied rewrites96.5%
Final simplification72.5%
(FPCore (x y z) :precision binary64 (if (<= (+ x y) -1e-265) (fma z x x) (fma y z y)))
double code(double x, double y, double z) {
double tmp;
if ((x + y) <= -1e-265) {
tmp = fma(z, x, x);
} else {
tmp = fma(y, z, y);
}
return tmp;
}
function code(x, y, z) tmp = 0.0 if (Float64(x + y) <= -1e-265) tmp = fma(z, x, x); else tmp = fma(y, z, y); end return tmp end
code[x_, y_, z_] := If[LessEqual[N[(x + y), $MachinePrecision], -1e-265], N[(z * x + x), $MachinePrecision], N[(y * z + y), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x + y \leq -1 \cdot 10^{-265}:\\
\;\;\;\;\mathsf{fma}\left(z, x, x\right)\\
\mathbf{else}:\\
\;\;\;\;\mathsf{fma}\left(y, z, y\right)\\
\end{array}
\end{array}
if (+.f64 x y) < -9.99999999999999985e-266Initial program 100.0%
Taylor expanded in x around inf
+-commutativeN/A
distribute-rgt-inN/A
*-lft-identityN/A
lower-fma.f6450.6
Applied rewrites50.6%
if -9.99999999999999985e-266 < (+.f64 x y) Initial program 100.0%
Taylor expanded in x around 0
+-commutativeN/A
distribute-lft-inN/A
*-rgt-identityN/A
lower-fma.f6449.8
Applied rewrites49.8%
(FPCore (x y z) :precision binary64 (+ x y))
double code(double x, double y, double z) {
return x + 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
end function
public static double code(double x, double y, double z) {
return x + y;
}
def code(x, y, z): return x + y
function code(x, y, z) return Float64(x + y) end
function tmp = code(x, y, z) tmp = x + y; end
code[x_, y_, z_] := N[(x + y), $MachinePrecision]
\begin{array}{l}
\\
x + y
\end{array}
Initial program 100.0%
Taylor expanded in z around 0
+-commutativeN/A
lower-+.f6452.0
Applied rewrites52.0%
Final simplification52.0%
herbie shell --seed 2024238
(FPCore (x y z)
:name "Optimisation.CirclePacking:place from circle-packing-0.1.0.4, G"
:precision binary64
(* (+ x y) (+ z 1.0)))