
(FPCore (x y z) :precision binary64 (+ (+ (+ (+ (+ x y) y) x) z) x))
double code(double x, double y, double z) {
return ((((x + y) + y) + x) + z) + x;
}
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) + y) + x) + z) + x
end function
public static double code(double x, double y, double z) {
return ((((x + y) + y) + x) + z) + x;
}
def code(x, y, z): return ((((x + y) + y) + x) + z) + x
function code(x, y, z) return Float64(Float64(Float64(Float64(Float64(x + y) + y) + x) + z) + x) end
function tmp = code(x, y, z) tmp = ((((x + y) + y) + x) + z) + x; end
code[x_, y_, z_] := N[(N[(N[(N[(N[(x + y), $MachinePrecision] + y), $MachinePrecision] + x), $MachinePrecision] + z), $MachinePrecision] + x), $MachinePrecision]
\begin{array}{l}
\\
\left(\left(\left(\left(x + y\right) + y\right) + x\right) + z\right) + x
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 8 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x y z) :precision binary64 (+ (+ (+ (+ (+ x y) y) x) z) x))
double code(double x, double y, double z) {
return ((((x + y) + y) + x) + z) + x;
}
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) + y) + x) + z) + x
end function
public static double code(double x, double y, double z) {
return ((((x + y) + y) + x) + z) + x;
}
def code(x, y, z): return ((((x + y) + y) + x) + z) + x
function code(x, y, z) return Float64(Float64(Float64(Float64(Float64(x + y) + y) + x) + z) + x) end
function tmp = code(x, y, z) tmp = ((((x + y) + y) + x) + z) + x; end
code[x_, y_, z_] := N[(N[(N[(N[(N[(x + y), $MachinePrecision] + y), $MachinePrecision] + x), $MachinePrecision] + z), $MachinePrecision] + x), $MachinePrecision]
\begin{array}{l}
\\
\left(\left(\left(\left(x + y\right) + y\right) + x\right) + z\right) + x
\end{array}
(FPCore (x y z) :precision binary64 (+ (+ z (+ (+ (+ x y) x) y)) x))
double code(double x, double y, double z) {
return (z + (((x + y) + x) + 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 = (z + (((x + y) + x) + y)) + x
end function
public static double code(double x, double y, double z) {
return (z + (((x + y) + x) + y)) + x;
}
def code(x, y, z): return (z + (((x + y) + x) + y)) + x
function code(x, y, z) return Float64(Float64(z + Float64(Float64(Float64(x + y) + x) + y)) + x) end
function tmp = code(x, y, z) tmp = (z + (((x + y) + x) + y)) + x; end
code[x_, y_, z_] := N[(N[(z + N[(N[(N[(x + y), $MachinePrecision] + x), $MachinePrecision] + y), $MachinePrecision]), $MachinePrecision] + x), $MachinePrecision]
\begin{array}{l}
\\
\left(z + \left(\left(\left(x + y\right) + x\right) + y\right)\right) + x
\end{array}
Initial program 99.9%
lift-+.f64N/A
lift-+.f64N/A
associate-+l+N/A
+-commutativeN/A
associate-+r+N/A
lower-+.f64N/A
lower-+.f6499.9
lift-+.f64N/A
+-commutativeN/A
lower-+.f6499.9
Applied rewrites99.9%
Final simplification99.9%
(FPCore (x y z) :precision binary64 (if (<= z -1.55e+67) (fma 3.0 x z) (if (<= z 9e+15) (+ (fma x 3.0 y) y) (+ (fma 2.0 y z) x))))
double code(double x, double y, double z) {
double tmp;
if (z <= -1.55e+67) {
tmp = fma(3.0, x, z);
} else if (z <= 9e+15) {
tmp = fma(x, 3.0, y) + y;
} else {
tmp = fma(2.0, y, z) + x;
}
return tmp;
}
function code(x, y, z) tmp = 0.0 if (z <= -1.55e+67) tmp = fma(3.0, x, z); elseif (z <= 9e+15) tmp = Float64(fma(x, 3.0, y) + y); else tmp = Float64(fma(2.0, y, z) + x); end return tmp end
code[x_, y_, z_] := If[LessEqual[z, -1.55e+67], N[(3.0 * x + z), $MachinePrecision], If[LessEqual[z, 9e+15], N[(N[(x * 3.0 + y), $MachinePrecision] + y), $MachinePrecision], N[(N[(2.0 * y + z), $MachinePrecision] + x), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z \leq -1.55 \cdot 10^{+67}:\\
\;\;\;\;\mathsf{fma}\left(3, x, z\right)\\
\mathbf{elif}\;z \leq 9 \cdot 10^{+15}:\\
\;\;\;\;\mathsf{fma}\left(x, 3, y\right) + y\\
\mathbf{else}:\\
\;\;\;\;\mathsf{fma}\left(2, y, z\right) + x\\
\end{array}
\end{array}
if z < -1.54999999999999998e67Initial program 99.9%
Taylor expanded in y around 0
+-commutativeN/A
associate-+r+N/A
distribute-rgt1-inN/A
metadata-evalN/A
lower-fma.f6489.0
Applied rewrites89.0%
if -1.54999999999999998e67 < z < 9e15Initial program 99.9%
Taylor expanded in z around 0
associate-+r+N/A
distribute-rgt1-inN/A
metadata-evalN/A
lower-fma.f64N/A
lower-*.f6490.9
Applied rewrites90.9%
Applied rewrites90.9%
Applied rewrites90.9%
if 9e15 < z Initial program 99.9%
Taylor expanded in x around 0
+-commutativeN/A
lower-fma.f6484.7
Applied rewrites84.7%
(FPCore (x y z) :precision binary64 (if (<= z -1.55e+67) (fma 3.0 x z) (if (<= z 9e+15) (+ (fma x 3.0 y) y) (fma 2.0 y z))))
double code(double x, double y, double z) {
double tmp;
if (z <= -1.55e+67) {
tmp = fma(3.0, x, z);
} else if (z <= 9e+15) {
tmp = fma(x, 3.0, y) + y;
} else {
tmp = fma(2.0, y, z);
}
return tmp;
}
function code(x, y, z) tmp = 0.0 if (z <= -1.55e+67) tmp = fma(3.0, x, z); elseif (z <= 9e+15) tmp = Float64(fma(x, 3.0, y) + y); else tmp = fma(2.0, y, z); end return tmp end
code[x_, y_, z_] := If[LessEqual[z, -1.55e+67], N[(3.0 * x + z), $MachinePrecision], If[LessEqual[z, 9e+15], N[(N[(x * 3.0 + y), $MachinePrecision] + y), $MachinePrecision], N[(2.0 * y + z), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z \leq -1.55 \cdot 10^{+67}:\\
\;\;\;\;\mathsf{fma}\left(3, x, z\right)\\
\mathbf{elif}\;z \leq 9 \cdot 10^{+15}:\\
\;\;\;\;\mathsf{fma}\left(x, 3, y\right) + y\\
\mathbf{else}:\\
\;\;\;\;\mathsf{fma}\left(2, y, z\right)\\
\end{array}
\end{array}
if z < -1.54999999999999998e67Initial program 99.9%
Taylor expanded in y around 0
+-commutativeN/A
associate-+r+N/A
distribute-rgt1-inN/A
metadata-evalN/A
lower-fma.f6489.0
Applied rewrites89.0%
if -1.54999999999999998e67 < z < 9e15Initial program 99.9%
Taylor expanded in z around 0
associate-+r+N/A
distribute-rgt1-inN/A
metadata-evalN/A
lower-fma.f64N/A
lower-*.f6490.9
Applied rewrites90.9%
Applied rewrites90.9%
Applied rewrites90.9%
if 9e15 < z Initial program 99.9%
Taylor expanded in y around 0
+-commutativeN/A
associate-+r+N/A
distribute-rgt1-inN/A
metadata-evalN/A
lower-fma.f6477.7
Applied rewrites77.7%
Applied rewrites77.7%
Taylor expanded in x around 0
+-commutativeN/A
lower-fma.f6482.5
Applied rewrites82.5%
(FPCore (x y z) :precision binary64 (if (<= x -3.4e+47) (fma 3.0 x z) (if (<= x 6.8e+125) (fma 2.0 y z) (fma 3.0 x z))))
double code(double x, double y, double z) {
double tmp;
if (x <= -3.4e+47) {
tmp = fma(3.0, x, z);
} else if (x <= 6.8e+125) {
tmp = fma(2.0, y, z);
} else {
tmp = fma(3.0, x, z);
}
return tmp;
}
function code(x, y, z) tmp = 0.0 if (x <= -3.4e+47) tmp = fma(3.0, x, z); elseif (x <= 6.8e+125) tmp = fma(2.0, y, z); else tmp = fma(3.0, x, z); end return tmp end
code[x_, y_, z_] := If[LessEqual[x, -3.4e+47], N[(3.0 * x + z), $MachinePrecision], If[LessEqual[x, 6.8e+125], N[(2.0 * y + z), $MachinePrecision], N[(3.0 * x + z), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -3.4 \cdot 10^{+47}:\\
\;\;\;\;\mathsf{fma}\left(3, x, z\right)\\
\mathbf{elif}\;x \leq 6.8 \cdot 10^{+125}:\\
\;\;\;\;\mathsf{fma}\left(2, y, z\right)\\
\mathbf{else}:\\
\;\;\;\;\mathsf{fma}\left(3, x, z\right)\\
\end{array}
\end{array}
if x < -3.3999999999999998e47 or 6.7999999999999998e125 < x Initial program 99.9%
Taylor expanded in y around 0
+-commutativeN/A
associate-+r+N/A
distribute-rgt1-inN/A
metadata-evalN/A
lower-fma.f6486.5
Applied rewrites86.5%
if -3.3999999999999998e47 < x < 6.7999999999999998e125Initial program 100.0%
Taylor expanded in y around 0
+-commutativeN/A
associate-+r+N/A
distribute-rgt1-inN/A
metadata-evalN/A
lower-fma.f6453.8
Applied rewrites53.8%
Applied rewrites53.8%
Taylor expanded in x around 0
+-commutativeN/A
lower-fma.f6486.3
Applied rewrites86.3%
(FPCore (x y z) :precision binary64 (if (<= x -1.7e+146) (* 3.0 x) (if (<= x 2.2e+139) (fma 2.0 y z) (* 3.0 x))))
double code(double x, double y, double z) {
double tmp;
if (x <= -1.7e+146) {
tmp = 3.0 * x;
} else if (x <= 2.2e+139) {
tmp = fma(2.0, y, z);
} else {
tmp = 3.0 * x;
}
return tmp;
}
function code(x, y, z) tmp = 0.0 if (x <= -1.7e+146) tmp = Float64(3.0 * x); elseif (x <= 2.2e+139) tmp = fma(2.0, y, z); else tmp = Float64(3.0 * x); end return tmp end
code[x_, y_, z_] := If[LessEqual[x, -1.7e+146], N[(3.0 * x), $MachinePrecision], If[LessEqual[x, 2.2e+139], N[(2.0 * y + z), $MachinePrecision], N[(3.0 * x), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -1.7 \cdot 10^{+146}:\\
\;\;\;\;3 \cdot x\\
\mathbf{elif}\;x \leq 2.2 \cdot 10^{+139}:\\
\;\;\;\;\mathsf{fma}\left(2, y, z\right)\\
\mathbf{else}:\\
\;\;\;\;3 \cdot x\\
\end{array}
\end{array}
if x < -1.69999999999999995e146 or 2.1999999999999999e139 < x Initial program 99.8%
Taylor expanded in x around inf
lower-*.f6475.7
Applied rewrites75.7%
if -1.69999999999999995e146 < x < 2.1999999999999999e139Initial program 100.0%
Taylor expanded in y around 0
+-commutativeN/A
associate-+r+N/A
distribute-rgt1-inN/A
metadata-evalN/A
lower-fma.f6456.9
Applied rewrites56.9%
Applied rewrites56.8%
Taylor expanded in x around 0
+-commutativeN/A
lower-fma.f6483.0
Applied rewrites83.0%
(FPCore (x y z) :precision binary64 (if (<= x -3.2e+59) (* 3.0 x) (if (<= x 1.4e-19) (+ y y) (* 3.0 x))))
double code(double x, double y, double z) {
double tmp;
if (x <= -3.2e+59) {
tmp = 3.0 * x;
} else if (x <= 1.4e-19) {
tmp = y + y;
} else {
tmp = 3.0 * 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 (x <= (-3.2d+59)) then
tmp = 3.0d0 * x
else if (x <= 1.4d-19) then
tmp = y + y
else
tmp = 3.0d0 * x
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if (x <= -3.2e+59) {
tmp = 3.0 * x;
} else if (x <= 1.4e-19) {
tmp = y + y;
} else {
tmp = 3.0 * x;
}
return tmp;
}
def code(x, y, z): tmp = 0 if x <= -3.2e+59: tmp = 3.0 * x elif x <= 1.4e-19: tmp = y + y else: tmp = 3.0 * x return tmp
function code(x, y, z) tmp = 0.0 if (x <= -3.2e+59) tmp = Float64(3.0 * x); elseif (x <= 1.4e-19) tmp = Float64(y + y); else tmp = Float64(3.0 * x); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if (x <= -3.2e+59) tmp = 3.0 * x; elseif (x <= 1.4e-19) tmp = y + y; else tmp = 3.0 * x; end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[x, -3.2e+59], N[(3.0 * x), $MachinePrecision], If[LessEqual[x, 1.4e-19], N[(y + y), $MachinePrecision], N[(3.0 * x), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -3.2 \cdot 10^{+59}:\\
\;\;\;\;3 \cdot x\\
\mathbf{elif}\;x \leq 1.4 \cdot 10^{-19}:\\
\;\;\;\;y + y\\
\mathbf{else}:\\
\;\;\;\;3 \cdot x\\
\end{array}
\end{array}
if x < -3.19999999999999982e59 or 1.40000000000000001e-19 < x Initial program 99.9%
Taylor expanded in x around inf
lower-*.f6462.7
Applied rewrites62.7%
if -3.19999999999999982e59 < x < 1.40000000000000001e-19Initial program 100.0%
Taylor expanded in z around 0
associate-+r+N/A
distribute-rgt1-inN/A
metadata-evalN/A
lower-fma.f64N/A
lower-*.f6458.1
Applied rewrites58.1%
Applied rewrites58.1%
Taylor expanded in x around 0
Applied rewrites48.7%
Applied rewrites48.7%
(FPCore (x y z) :precision binary64 (+ (+ (+ (+ (+ x y) y) x) z) x))
double code(double x, double y, double z) {
return ((((x + y) + y) + x) + z) + x;
}
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) + y) + x) + z) + x
end function
public static double code(double x, double y, double z) {
return ((((x + y) + y) + x) + z) + x;
}
def code(x, y, z): return ((((x + y) + y) + x) + z) + x
function code(x, y, z) return Float64(Float64(Float64(Float64(Float64(x + y) + y) + x) + z) + x) end
function tmp = code(x, y, z) tmp = ((((x + y) + y) + x) + z) + x; end
code[x_, y_, z_] := N[(N[(N[(N[(N[(x + y), $MachinePrecision] + y), $MachinePrecision] + x), $MachinePrecision] + z), $MachinePrecision] + x), $MachinePrecision]
\begin{array}{l}
\\
\left(\left(\left(\left(x + y\right) + y\right) + x\right) + z\right) + x
\end{array}
Initial program 99.9%
(FPCore (x y z) :precision binary64 (+ y y))
double code(double x, double y, double z) {
return y + y;
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
code = y + y
end function
public static double code(double x, double y, double z) {
return y + y;
}
def code(x, y, z): return y + y
function code(x, y, z) return Float64(y + y) end
function tmp = code(x, y, z) tmp = y + y; end
code[x_, y_, z_] := N[(y + y), $MachinePrecision]
\begin{array}{l}
\\
y + y
\end{array}
Initial program 99.9%
Taylor expanded in z around 0
associate-+r+N/A
distribute-rgt1-inN/A
metadata-evalN/A
lower-fma.f64N/A
lower-*.f6468.2
Applied rewrites68.2%
Applied rewrites68.2%
Taylor expanded in x around 0
Applied rewrites34.9%
Applied rewrites34.9%
herbie shell --seed 2024332
(FPCore (x y z)
:name "Graphics.Rendering.Plot.Render.Plot.Legend:renderLegendInside from plot-0.2.3.4"
:precision binary64
(+ (+ (+ (+ (+ x y) y) x) z) x))