
(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 x 3.0 (+ (+ y y) z)))
double code(double x, double y, double z) {
return fma(x, 3.0, ((y + y) + z));
}
function code(x, y, z) return fma(x, 3.0, Float64(Float64(y + y) + z)) end
code[x_, y_, z_] := N[(x * 3.0 + N[(N[(y + y), $MachinePrecision] + z), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\mathsf{fma}\left(x, 3, \left(y + y\right) + z\right)
\end{array}
Initial program 99.9%
Taylor expanded in z around 0
associate-+r+N/A
associate-+r+N/A
+-commutativeN/A
*-commutativeN/A
lower-fma.f64N/A
+-commutativeN/A
associate-+r+N/A
distribute-rgt1-inN/A
metadata-evalN/A
lower-fma.f6499.9
Applied rewrites99.9%
Applied rewrites100.0%
Final simplification100.0%
(FPCore (x y z) :precision binary64 (if (<= z -1.95e+89) (fma y 2.0 z) (if (<= z 1.62e+40) (fma x 3.0 (+ y y)) (fma 3.0 x z))))
double code(double x, double y, double z) {
double tmp;
if (z <= -1.95e+89) {
tmp = fma(y, 2.0, z);
} else if (z <= 1.62e+40) {
tmp = fma(x, 3.0, (y + y));
} else {
tmp = fma(3.0, x, z);
}
return tmp;
}
function code(x, y, z) tmp = 0.0 if (z <= -1.95e+89) tmp = fma(y, 2.0, z); elseif (z <= 1.62e+40) tmp = fma(x, 3.0, Float64(y + y)); else tmp = fma(3.0, x, z); end return tmp end
code[x_, y_, z_] := If[LessEqual[z, -1.95e+89], N[(y * 2.0 + z), $MachinePrecision], If[LessEqual[z, 1.62e+40], N[(x * 3.0 + N[(y + y), $MachinePrecision]), $MachinePrecision], N[(3.0 * x + z), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z \leq -1.95 \cdot 10^{+89}:\\
\;\;\;\;\mathsf{fma}\left(y, 2, z\right)\\
\mathbf{elif}\;z \leq 1.62 \cdot 10^{+40}:\\
\;\;\;\;\mathsf{fma}\left(x, 3, y + y\right)\\
\mathbf{else}:\\
\;\;\;\;\mathsf{fma}\left(3, x, z\right)\\
\end{array}
\end{array}
if z < -1.95000000000000005e89Initial program 100.0%
Taylor expanded in x around 0
+-commutativeN/A
*-commutativeN/A
lower-fma.f6493.4
Applied rewrites93.4%
if -1.95000000000000005e89 < z < 1.62e40Initial program 99.8%
Taylor expanded in z around 0
associate-+r+N/A
associate-+r+N/A
+-commutativeN/A
*-commutativeN/A
lower-fma.f64N/A
+-commutativeN/A
associate-+r+N/A
distribute-rgt1-inN/A
metadata-evalN/A
lower-fma.f6499.9
Applied rewrites99.9%
Applied rewrites100.0%
Taylor expanded in z around 0
Applied rewrites90.5%
Applied rewrites90.5%
if 1.62e40 < 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.f6486.8
Applied rewrites86.8%
(FPCore (x y z) :precision binary64 (if (<= y -7e+24) (fma y 2.0 z) (if (<= y 1.4e+84) (fma 3.0 x z) (fma y 2.0 z))))
double code(double x, double y, double z) {
double tmp;
if (y <= -7e+24) {
tmp = fma(y, 2.0, z);
} else if (y <= 1.4e+84) {
tmp = fma(3.0, x, z);
} else {
tmp = fma(y, 2.0, z);
}
return tmp;
}
function code(x, y, z) tmp = 0.0 if (y <= -7e+24) tmp = fma(y, 2.0, z); elseif (y <= 1.4e+84) tmp = fma(3.0, x, z); else tmp = fma(y, 2.0, z); end return tmp end
code[x_, y_, z_] := If[LessEqual[y, -7e+24], N[(y * 2.0 + z), $MachinePrecision], If[LessEqual[y, 1.4e+84], N[(3.0 * x + z), $MachinePrecision], N[(y * 2.0 + z), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -7 \cdot 10^{+24}:\\
\;\;\;\;\mathsf{fma}\left(y, 2, z\right)\\
\mathbf{elif}\;y \leq 1.4 \cdot 10^{+84}:\\
\;\;\;\;\mathsf{fma}\left(3, x, z\right)\\
\mathbf{else}:\\
\;\;\;\;\mathsf{fma}\left(y, 2, z\right)\\
\end{array}
\end{array}
if y < -7.0000000000000004e24 or 1.39999999999999991e84 < y Initial program 99.9%
Taylor expanded in x around 0
+-commutativeN/A
*-commutativeN/A
lower-fma.f6486.9
Applied rewrites86.9%
if -7.0000000000000004e24 < y < 1.39999999999999991e84Initial program 99.8%
Taylor expanded in y around 0
+-commutativeN/A
associate-+r+N/A
distribute-rgt1-inN/A
metadata-evalN/A
lower-fma.f6489.7
Applied rewrites89.7%
(FPCore (x y z) :precision binary64 (if (<= y -8.2e+127) (+ y y) (if (<= y 5.3e+113) (fma 3.0 x z) (+ y y))))
double code(double x, double y, double z) {
double tmp;
if (y <= -8.2e+127) {
tmp = y + y;
} else if (y <= 5.3e+113) {
tmp = fma(3.0, x, z);
} else {
tmp = y + y;
}
return tmp;
}
function code(x, y, z) tmp = 0.0 if (y <= -8.2e+127) tmp = Float64(y + y); elseif (y <= 5.3e+113) tmp = fma(3.0, x, z); else tmp = Float64(y + y); end return tmp end
code[x_, y_, z_] := If[LessEqual[y, -8.2e+127], N[(y + y), $MachinePrecision], If[LessEqual[y, 5.3e+113], N[(3.0 * x + z), $MachinePrecision], N[(y + y), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -8.2 \cdot 10^{+127}:\\
\;\;\;\;y + y\\
\mathbf{elif}\;y \leq 5.3 \cdot 10^{+113}:\\
\;\;\;\;\mathsf{fma}\left(3, x, z\right)\\
\mathbf{else}:\\
\;\;\;\;y + y\\
\end{array}
\end{array}
if y < -8.19999999999999965e127 or 5.29999999999999967e113 < y Initial program 100.0%
Taylor expanded in y around inf
*-commutativeN/A
lower-*.f6475.1
Applied rewrites75.1%
Applied rewrites75.1%
if -8.19999999999999965e127 < y < 5.29999999999999967e113Initial program 99.8%
Taylor expanded in y around 0
+-commutativeN/A
associate-+r+N/A
distribute-rgt1-inN/A
metadata-evalN/A
lower-fma.f6487.2
Applied rewrites87.2%
(FPCore (x y z) :precision binary64 (if (<= y -3.45e+56) (+ y y) (if (<= y 4.2e+109) (* 3.0 x) (+ y y))))
double code(double x, double y, double z) {
double tmp;
if (y <= -3.45e+56) {
tmp = y + y;
} else if (y <= 4.2e+109) {
tmp = 3.0 * x;
} else {
tmp = y + y;
}
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 (y <= (-3.45d+56)) then
tmp = y + y
else if (y <= 4.2d+109) then
tmp = 3.0d0 * x
else
tmp = y + y
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if (y <= -3.45e+56) {
tmp = y + y;
} else if (y <= 4.2e+109) {
tmp = 3.0 * x;
} else {
tmp = y + y;
}
return tmp;
}
def code(x, y, z): tmp = 0 if y <= -3.45e+56: tmp = y + y elif y <= 4.2e+109: tmp = 3.0 * x else: tmp = y + y return tmp
function code(x, y, z) tmp = 0.0 if (y <= -3.45e+56) tmp = Float64(y + y); elseif (y <= 4.2e+109) tmp = Float64(3.0 * x); else tmp = Float64(y + y); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if (y <= -3.45e+56) tmp = y + y; elseif (y <= 4.2e+109) tmp = 3.0 * x; else tmp = y + y; end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[y, -3.45e+56], N[(y + y), $MachinePrecision], If[LessEqual[y, 4.2e+109], N[(3.0 * x), $MachinePrecision], N[(y + y), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -3.45 \cdot 10^{+56}:\\
\;\;\;\;y + y\\
\mathbf{elif}\;y \leq 4.2 \cdot 10^{+109}:\\
\;\;\;\;3 \cdot x\\
\mathbf{else}:\\
\;\;\;\;y + y\\
\end{array}
\end{array}
if y < -3.45e56 or 4.2000000000000003e109 < y Initial program 99.9%
Taylor expanded in y around inf
*-commutativeN/A
lower-*.f6468.9
Applied rewrites68.9%
Applied rewrites68.9%
if -3.45e56 < y < 4.2000000000000003e109Initial program 99.8%
Taylor expanded in x around inf
lower-*.f6449.8
Applied rewrites49.8%
(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-*.f6431.5
Applied rewrites31.5%
Applied rewrites31.5%
herbie shell --seed 2024240
(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))