
(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 6 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 (fma 2.0 (+ x y) (+ z x)))
double code(double x, double y, double z) {
return fma(2.0, (x + y), (z + x));
}
function code(x, y, z) return fma(2.0, Float64(x + y), Float64(z + x)) end
code[x_, y_, z_] := N[(2.0 * N[(x + y), $MachinePrecision] + N[(z + x), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\mathsf{fma}\left(2, x + y, z + x\right)
\end{array}
Initial program 99.9%
lift-+.f64N/A
lift-+.f64N/A
associate-+l+N/A
lift-+.f64N/A
lift-+.f64N/A
associate-+l+N/A
+-commutativeN/A
lift-+.f64N/A
count-2N/A
+-commutativeN/A
lower-fma.f64N/A
lift-+.f64N/A
+-commutativeN/A
lower-+.f64N/A
+-commutativeN/A
lower-+.f6499.9
Applied rewrites99.9%
Final simplification99.9%
(FPCore (x y z) :precision binary64 (if (<= z -2.7e+82) (fma 3.0 x z) (if (<= z 1.35e+81) (fma 3.0 x (+ y y)) (fma y 2.0 z))))
double code(double x, double y, double z) {
double tmp;
if (z <= -2.7e+82) {
tmp = fma(3.0, x, z);
} else if (z <= 1.35e+81) {
tmp = fma(3.0, x, (y + y));
} else {
tmp = fma(y, 2.0, z);
}
return tmp;
}
function code(x, y, z) tmp = 0.0 if (z <= -2.7e+82) tmp = fma(3.0, x, z); elseif (z <= 1.35e+81) tmp = fma(3.0, x, Float64(y + y)); else tmp = fma(y, 2.0, z); end return tmp end
code[x_, y_, z_] := If[LessEqual[z, -2.7e+82], N[(3.0 * x + z), $MachinePrecision], If[LessEqual[z, 1.35e+81], N[(3.0 * x + N[(y + y), $MachinePrecision]), $MachinePrecision], N[(y * 2.0 + z), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z \leq -2.7 \cdot 10^{+82}:\\
\;\;\;\;\mathsf{fma}\left(3, x, z\right)\\
\mathbf{elif}\;z \leq 1.35 \cdot 10^{+81}:\\
\;\;\;\;\mathsf{fma}\left(3, x, y + y\right)\\
\mathbf{else}:\\
\;\;\;\;\mathsf{fma}\left(y, 2, z\right)\\
\end{array}
\end{array}
if z < -2.6999999999999999e82Initial program 99.9%
Taylor expanded in y around 0
+-commutativeN/A
associate-+r+N/A
distribute-rgt1-inN/A
metadata-evalN/A
lower-fma.f6491.3
Applied rewrites91.3%
if -2.6999999999999999e82 < z < 1.35e81Initial program 99.9%
Taylor expanded in z around 0
associate-+r+N/A
distribute-rgt1-inN/A
metadata-evalN/A
lower-fma.f64N/A
*-commutativeN/A
lower-*.f6490.2
Applied rewrites90.2%
Applied rewrites90.2%
if 1.35e81 < z Initial program 100.0%
Taylor expanded in x around 0
+-commutativeN/A
*-commutativeN/A
lower-fma.f6496.6
Applied rewrites96.6%
(FPCore (x y z) :precision binary64 (if (<= x -1.15e+69) (fma 3.0 x z) (if (<= x 2.5e-46) (fma y 2.0 z) (fma 3.0 x z))))
double code(double x, double y, double z) {
double tmp;
if (x <= -1.15e+69) {
tmp = fma(3.0, x, z);
} else if (x <= 2.5e-46) {
tmp = fma(y, 2.0, z);
} else {
tmp = fma(3.0, x, z);
}
return tmp;
}
function code(x, y, z) tmp = 0.0 if (x <= -1.15e+69) tmp = fma(3.0, x, z); elseif (x <= 2.5e-46) tmp = fma(y, 2.0, z); else tmp = fma(3.0, x, z); end return tmp end
code[x_, y_, z_] := If[LessEqual[x, -1.15e+69], N[(3.0 * x + z), $MachinePrecision], If[LessEqual[x, 2.5e-46], N[(y * 2.0 + z), $MachinePrecision], N[(3.0 * x + z), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -1.15 \cdot 10^{+69}:\\
\;\;\;\;\mathsf{fma}\left(3, x, z\right)\\
\mathbf{elif}\;x \leq 2.5 \cdot 10^{-46}:\\
\;\;\;\;\mathsf{fma}\left(y, 2, z\right)\\
\mathbf{else}:\\
\;\;\;\;\mathsf{fma}\left(3, x, z\right)\\
\end{array}
\end{array}
if x < -1.15000000000000008e69 or 2.49999999999999996e-46 < 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.f6486.0
Applied rewrites86.0%
if -1.15000000000000008e69 < x < 2.49999999999999996e-46Initial program 100.0%
Taylor expanded in x around 0
+-commutativeN/A
*-commutativeN/A
lower-fma.f6494.5
Applied rewrites94.5%
(FPCore (x y z) :precision binary64 (if (<= y -2.2e+197) (+ y y) (if (<= y 1.35e+116) (fma 3.0 x z) (+ y y))))
double code(double x, double y, double z) {
double tmp;
if (y <= -2.2e+197) {
tmp = y + y;
} else if (y <= 1.35e+116) {
tmp = fma(3.0, x, z);
} else {
tmp = y + y;
}
return tmp;
}
function code(x, y, z) tmp = 0.0 if (y <= -2.2e+197) tmp = Float64(y + y); elseif (y <= 1.35e+116) tmp = fma(3.0, x, z); else tmp = Float64(y + y); end return tmp end
code[x_, y_, z_] := If[LessEqual[y, -2.2e+197], N[(y + y), $MachinePrecision], If[LessEqual[y, 1.35e+116], N[(3.0 * x + z), $MachinePrecision], N[(y + y), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -2.2 \cdot 10^{+197}:\\
\;\;\;\;y + y\\
\mathbf{elif}\;y \leq 1.35 \cdot 10^{+116}:\\
\;\;\;\;\mathsf{fma}\left(3, x, z\right)\\
\mathbf{else}:\\
\;\;\;\;y + y\\
\end{array}
\end{array}
if y < -2.19999999999999989e197 or 1.35e116 < y Initial program 100.0%
Taylor expanded in y around inf
*-commutativeN/A
lower-*.f6478.2
Applied rewrites78.2%
Applied rewrites78.2%
if -2.19999999999999989e197 < y < 1.35e116Initial program 99.9%
Taylor expanded in y around 0
+-commutativeN/A
associate-+r+N/A
distribute-rgt1-inN/A
metadata-evalN/A
lower-fma.f6481.7
Applied rewrites81.7%
(FPCore (x y z) :precision binary64 (if (<= x -1.15e+69) (* 3.0 x) (if (<= x 750000000.0) (+ y y) (* 3.0 x))))
double code(double x, double y, double z) {
double tmp;
if (x <= -1.15e+69) {
tmp = 3.0 * x;
} else if (x <= 750000000.0) {
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 <= (-1.15d+69)) then
tmp = 3.0d0 * x
else if (x <= 750000000.0d0) 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 <= -1.15e+69) {
tmp = 3.0 * x;
} else if (x <= 750000000.0) {
tmp = y + y;
} else {
tmp = 3.0 * x;
}
return tmp;
}
def code(x, y, z): tmp = 0 if x <= -1.15e+69: tmp = 3.0 * x elif x <= 750000000.0: tmp = y + y else: tmp = 3.0 * x return tmp
function code(x, y, z) tmp = 0.0 if (x <= -1.15e+69) tmp = Float64(3.0 * x); elseif (x <= 750000000.0) 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 <= -1.15e+69) tmp = 3.0 * x; elseif (x <= 750000000.0) tmp = y + y; else tmp = 3.0 * x; end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[x, -1.15e+69], N[(3.0 * x), $MachinePrecision], If[LessEqual[x, 750000000.0], N[(y + y), $MachinePrecision], N[(3.0 * x), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -1.15 \cdot 10^{+69}:\\
\;\;\;\;3 \cdot x\\
\mathbf{elif}\;x \leq 750000000:\\
\;\;\;\;y + y\\
\mathbf{else}:\\
\;\;\;\;3 \cdot x\\
\end{array}
\end{array}
if x < -1.15000000000000008e69 or 7.5e8 < x Initial program 99.8%
Taylor expanded in x around inf
lower-*.f6466.9
Applied rewrites66.9%
if -1.15000000000000008e69 < x < 7.5e8Initial program 100.0%
Taylor expanded in y around inf
*-commutativeN/A
lower-*.f6453.7
Applied rewrites53.7%
Applied rewrites53.7%
(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 y around inf
*-commutativeN/A
lower-*.f6435.6
Applied rewrites35.6%
Applied rewrites35.6%
herbie shell --seed 2024255
(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))