
(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 7 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 3.0 x (fma 2.0 y z)))
double code(double x, double y, double z) {
return fma(3.0, x, fma(2.0, y, z));
}
function code(x, y, z) return fma(3.0, x, fma(2.0, y, z)) end
code[x_, y_, z_] := N[(3.0 * x + N[(2.0 * y + z), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\mathsf{fma}\left(3, x, \mathsf{fma}\left(2, y, z\right)\right)
\end{array}
Initial program 99.9%
Taylor expanded in x around 0
associate-+r+N/A
+-commutativeN/A
lower-fma.f64N/A
+-commutativeN/A
lower-fma.f64100.0
Applied rewrites100.0%
(FPCore (x y z) :precision binary64 (if (<= y -2.2e+16) (+ (fma 2.0 y z) x) (if (<= y 4e+67) (fma 3.0 x z) (fma 3.0 x (+ y y)))))
double code(double x, double y, double z) {
double tmp;
if (y <= -2.2e+16) {
tmp = fma(2.0, y, z) + x;
} else if (y <= 4e+67) {
tmp = fma(3.0, x, z);
} else {
tmp = fma(3.0, x, (y + y));
}
return tmp;
}
function code(x, y, z) tmp = 0.0 if (y <= -2.2e+16) tmp = Float64(fma(2.0, y, z) + x); elseif (y <= 4e+67) tmp = fma(3.0, x, z); else tmp = fma(3.0, x, Float64(y + y)); end return tmp end
code[x_, y_, z_] := If[LessEqual[y, -2.2e+16], N[(N[(2.0 * y + z), $MachinePrecision] + x), $MachinePrecision], If[LessEqual[y, 4e+67], N[(3.0 * x + z), $MachinePrecision], N[(3.0 * x + N[(y + y), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -2.2 \cdot 10^{+16}:\\
\;\;\;\;\mathsf{fma}\left(2, y, z\right) + x\\
\mathbf{elif}\;y \leq 4 \cdot 10^{+67}:\\
\;\;\;\;\mathsf{fma}\left(3, x, z\right)\\
\mathbf{else}:\\
\;\;\;\;\mathsf{fma}\left(3, x, y + y\right)\\
\end{array}
\end{array}
if y < -2.2e16Initial program 100.0%
Taylor expanded in x around 0
+-commutativeN/A
lower-fma.f6488.0
Applied rewrites88.0%
if -2.2e16 < y < 3.99999999999999993e67Initial program 99.8%
Taylor expanded in y around 0
+-commutativeN/A
associate-+r+N/A
distribute-rgt1-inN/A
metadata-evalN/A
lower-fma.f6494.9
Applied rewrites94.9%
if 3.99999999999999993e67 < y Initial program 99.9%
Taylor expanded in z around 0
+-commutativeN/A
distribute-lft-outN/A
*-commutativeN/A
lower-fma.f64N/A
+-commutativeN/A
lower-+.f6487.3
Applied rewrites87.3%
Taylor expanded in x around 0
Applied rewrites87.4%
Applied rewrites87.4%
(FPCore (x y z) :precision binary64 (if (<= y -2.7e+16) (fma 2.0 y z) (if (<= y 4e+67) (fma 3.0 x z) (fma 3.0 x (+ y y)))))
double code(double x, double y, double z) {
double tmp;
if (y <= -2.7e+16) {
tmp = fma(2.0, y, z);
} else if (y <= 4e+67) {
tmp = fma(3.0, x, z);
} else {
tmp = fma(3.0, x, (y + y));
}
return tmp;
}
function code(x, y, z) tmp = 0.0 if (y <= -2.7e+16) tmp = fma(2.0, y, z); elseif (y <= 4e+67) tmp = fma(3.0, x, z); else tmp = fma(3.0, x, Float64(y + y)); end return tmp end
code[x_, y_, z_] := If[LessEqual[y, -2.7e+16], N[(2.0 * y + z), $MachinePrecision], If[LessEqual[y, 4e+67], N[(3.0 * x + z), $MachinePrecision], N[(3.0 * x + N[(y + y), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -2.7 \cdot 10^{+16}:\\
\;\;\;\;\mathsf{fma}\left(2, y, z\right)\\
\mathbf{elif}\;y \leq 4 \cdot 10^{+67}:\\
\;\;\;\;\mathsf{fma}\left(3, x, z\right)\\
\mathbf{else}:\\
\;\;\;\;\mathsf{fma}\left(3, x, y + y\right)\\
\end{array}
\end{array}
if y < -2.7e16Initial program 100.0%
Taylor expanded in x around 0
associate-+r+N/A
+-commutativeN/A
lower-fma.f64N/A
+-commutativeN/A
lower-fma.f64100.0
Applied rewrites100.0%
Taylor expanded in x around 0
+-commutativeN/A
lower-fma.f6486.3
Applied rewrites86.3%
if -2.7e16 < y < 3.99999999999999993e67Initial program 99.8%
Taylor expanded in y around 0
+-commutativeN/A
associate-+r+N/A
distribute-rgt1-inN/A
metadata-evalN/A
lower-fma.f6494.9
Applied rewrites94.9%
if 3.99999999999999993e67 < y Initial program 99.9%
Taylor expanded in z around 0
+-commutativeN/A
distribute-lft-outN/A
*-commutativeN/A
lower-fma.f64N/A
+-commutativeN/A
lower-+.f6487.3
Applied rewrites87.3%
Taylor expanded in x around 0
Applied rewrites87.4%
Applied rewrites87.4%
(FPCore (x y z) :precision binary64 (if (or (<= y -2.7e+16) (not (<= y 3.6e+70))) (fma 2.0 y z) (fma 3.0 x z)))
double code(double x, double y, double z) {
double tmp;
if ((y <= -2.7e+16) || !(y <= 3.6e+70)) {
tmp = fma(2.0, y, z);
} else {
tmp = fma(3.0, x, z);
}
return tmp;
}
function code(x, y, z) tmp = 0.0 if ((y <= -2.7e+16) || !(y <= 3.6e+70)) tmp = fma(2.0, y, z); else tmp = fma(3.0, x, z); end return tmp end
code[x_, y_, z_] := If[Or[LessEqual[y, -2.7e+16], N[Not[LessEqual[y, 3.6e+70]], $MachinePrecision]], N[(2.0 * y + z), $MachinePrecision], N[(3.0 * x + z), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -2.7 \cdot 10^{+16} \lor \neg \left(y \leq 3.6 \cdot 10^{+70}\right):\\
\;\;\;\;\mathsf{fma}\left(2, y, z\right)\\
\mathbf{else}:\\
\;\;\;\;\mathsf{fma}\left(3, x, z\right)\\
\end{array}
\end{array}
if y < -2.7e16 or 3.6e70 < y Initial program 99.9%
Taylor expanded in x around 0
associate-+r+N/A
+-commutativeN/A
lower-fma.f64N/A
+-commutativeN/A
lower-fma.f64100.0
Applied rewrites100.0%
Taylor expanded in x around 0
+-commutativeN/A
lower-fma.f6485.7
Applied rewrites85.7%
if -2.7e16 < y < 3.6e70Initial program 99.8%
Taylor expanded in y around 0
+-commutativeN/A
associate-+r+N/A
distribute-rgt1-inN/A
metadata-evalN/A
lower-fma.f6495.0
Applied rewrites95.0%
Final simplification90.6%
(FPCore (x y z) :precision binary64 (if (or (<= x -1.6e+134) (not (<= x 9.2e+167))) (* 3.0 x) (fma 2.0 y z)))
double code(double x, double y, double z) {
double tmp;
if ((x <= -1.6e+134) || !(x <= 9.2e+167)) {
tmp = 3.0 * x;
} else {
tmp = fma(2.0, y, z);
}
return tmp;
}
function code(x, y, z) tmp = 0.0 if ((x <= -1.6e+134) || !(x <= 9.2e+167)) tmp = Float64(3.0 * x); else tmp = fma(2.0, y, z); end return tmp end
code[x_, y_, z_] := If[Or[LessEqual[x, -1.6e+134], N[Not[LessEqual[x, 9.2e+167]], $MachinePrecision]], N[(3.0 * x), $MachinePrecision], N[(2.0 * y + z), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -1.6 \cdot 10^{+134} \lor \neg \left(x \leq 9.2 \cdot 10^{+167}\right):\\
\;\;\;\;3 \cdot x\\
\mathbf{else}:\\
\;\;\;\;\mathsf{fma}\left(2, y, z\right)\\
\end{array}
\end{array}
if x < -1.6e134 or 9.19999999999999952e167 < x Initial program 99.8%
Taylor expanded in x around inf
lower-*.f6478.6
Applied rewrites78.6%
if -1.6e134 < x < 9.19999999999999952e167Initial program 99.9%
Taylor expanded in x around 0
associate-+r+N/A
+-commutativeN/A
lower-fma.f64N/A
+-commutativeN/A
lower-fma.f64100.0
Applied rewrites100.0%
Taylor expanded in x around 0
+-commutativeN/A
lower-fma.f6483.9
Applied rewrites83.9%
Final simplification82.4%
(FPCore (x y z) :precision binary64 (if (or (<= y -6.5e+15) (not (<= y 3.6e+70))) (+ y y) (* 3.0 x)))
double code(double x, double y, double z) {
double tmp;
if ((y <= -6.5e+15) || !(y <= 3.6e+70)) {
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 ((y <= (-6.5d+15)) .or. (.not. (y <= 3.6d+70))) 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 ((y <= -6.5e+15) || !(y <= 3.6e+70)) {
tmp = y + y;
} else {
tmp = 3.0 * x;
}
return tmp;
}
def code(x, y, z): tmp = 0 if (y <= -6.5e+15) or not (y <= 3.6e+70): tmp = y + y else: tmp = 3.0 * x return tmp
function code(x, y, z) tmp = 0.0 if ((y <= -6.5e+15) || !(y <= 3.6e+70)) 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 ((y <= -6.5e+15) || ~((y <= 3.6e+70))) tmp = y + y; else tmp = 3.0 * x; end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[y, -6.5e+15], N[Not[LessEqual[y, 3.6e+70]], $MachinePrecision]], N[(y + y), $MachinePrecision], N[(3.0 * x), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -6.5 \cdot 10^{+15} \lor \neg \left(y \leq 3.6 \cdot 10^{+70}\right):\\
\;\;\;\;y + y\\
\mathbf{else}:\\
\;\;\;\;3 \cdot x\\
\end{array}
\end{array}
if y < -6.5e15 or 3.6e70 < y Initial program 99.9%
Taylor expanded in z around 0
+-commutativeN/A
distribute-lft-outN/A
*-commutativeN/A
lower-fma.f64N/A
+-commutativeN/A
lower-+.f6477.6
Applied rewrites77.6%
Taylor expanded in x around 0
Applied rewrites63.5%
Applied rewrites63.5%
if -6.5e15 < y < 3.6e70Initial program 99.8%
Taylor expanded in x around inf
lower-*.f6454.2
Applied rewrites54.2%
Final simplification58.6%
(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
+-commutativeN/A
distribute-lft-outN/A
*-commutativeN/A
lower-fma.f64N/A
+-commutativeN/A
lower-+.f6467.7
Applied rewrites67.7%
Taylor expanded in x around 0
Applied rewrites33.9%
Applied rewrites33.9%
herbie shell --seed 2024313
(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))