
(FPCore (x y) :precision binary64 (* x (+ 1.0 (* y y))))
double code(double x, double y) {
return x * (1.0 + (y * y));
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = x * (1.0d0 + (y * y))
end function
public static double code(double x, double y) {
return x * (1.0 + (y * y));
}
def code(x, y): return x * (1.0 + (y * y))
function code(x, y) return Float64(x * Float64(1.0 + Float64(y * y))) end
function tmp = code(x, y) tmp = x * (1.0 + (y * y)); end
code[x_, y_] := N[(x * N[(1.0 + N[(y * y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x \cdot \left(1 + y \cdot y\right)
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 4 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x y) :precision binary64 (* x (+ 1.0 (* y y))))
double code(double x, double y) {
return x * (1.0 + (y * y));
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = x * (1.0d0 + (y * y))
end function
public static double code(double x, double y) {
return x * (1.0 + (y * y));
}
def code(x, y): return x * (1.0 + (y * y))
function code(x, y) return Float64(x * Float64(1.0 + Float64(y * y))) end
function tmp = code(x, y) tmp = x * (1.0 + (y * y)); end
code[x_, y_] := N[(x * N[(1.0 + N[(y * y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x \cdot \left(1 + y \cdot y\right)
\end{array}
(FPCore (x y) :precision binary64 (if (<= (* y y) 4e+55) (* x (+ (* y y) 1.0)) (* y (* x y))))
double code(double x, double y) {
double tmp;
if ((y * y) <= 4e+55) {
tmp = x * ((y * y) + 1.0);
} else {
tmp = y * (x * y);
}
return tmp;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8) :: tmp
if ((y * y) <= 4d+55) then
tmp = x * ((y * y) + 1.0d0)
else
tmp = y * (x * y)
end if
code = tmp
end function
public static double code(double x, double y) {
double tmp;
if ((y * y) <= 4e+55) {
tmp = x * ((y * y) + 1.0);
} else {
tmp = y * (x * y);
}
return tmp;
}
def code(x, y): tmp = 0 if (y * y) <= 4e+55: tmp = x * ((y * y) + 1.0) else: tmp = y * (x * y) return tmp
function code(x, y) tmp = 0.0 if (Float64(y * y) <= 4e+55) tmp = Float64(x * Float64(Float64(y * y) + 1.0)); else tmp = Float64(y * Float64(x * y)); end return tmp end
function tmp_2 = code(x, y) tmp = 0.0; if ((y * y) <= 4e+55) tmp = x * ((y * y) + 1.0); else tmp = y * (x * y); end tmp_2 = tmp; end
code[x_, y_] := If[LessEqual[N[(y * y), $MachinePrecision], 4e+55], N[(x * N[(N[(y * y), $MachinePrecision] + 1.0), $MachinePrecision]), $MachinePrecision], N[(y * N[(x * y), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \cdot y \leq 4 \cdot 10^{+55}:\\
\;\;\;\;x \cdot \left(y \cdot y + 1\right)\\
\mathbf{else}:\\
\;\;\;\;y \cdot \left(x \cdot y\right)\\
\end{array}
\end{array}
if (*.f64 y y) < 4.00000000000000004e55Initial program 100.0%
if 4.00000000000000004e55 < (*.f64 y y) Initial program 89.0%
add-sqr-sqrt36.3%
sqrt-unprod29.3%
pow1/229.3%
pow229.3%
add-sqr-sqrt29.1%
pow-prod-down29.1%
pow-prod-up29.0%
*-commutative29.0%
sqrt-prod29.0%
hypot-1-def34.5%
metadata-eval34.5%
Applied egg-rr34.5%
unpow1/234.5%
metadata-eval34.5%
pow-sqr34.5%
exp-to-pow33.7%
exp-to-pow33.5%
rem-sqrt-square42.0%
exp-to-pow44.1%
unpow244.1%
fabs-sqr44.1%
unpow244.1%
Simplified44.1%
Taylor expanded in y around inf 44.1%
unpow244.1%
swap-sqr36.3%
add-sqr-sqrt89.0%
associate-*r*99.9%
Applied egg-rr99.9%
Final simplification99.9%
(FPCore (x y) :precision binary64 (fma (* x y) y x))
double code(double x, double y) {
return fma((x * y), y, x);
}
function code(x, y) return fma(Float64(x * y), y, x) end
code[x_, y_] := N[(N[(x * y), $MachinePrecision] * y + x), $MachinePrecision]
\begin{array}{l}
\\
\mathsf{fma}\left(x \cdot y, y, x\right)
\end{array}
Initial program 94.7%
+-commutative94.7%
distribute-lft-in94.7%
associate-*r*99.9%
*-rgt-identity99.9%
fma-def99.9%
Applied egg-rr99.9%
Final simplification99.9%
(FPCore (x y) :precision binary64 (if (<= y 1.0) x (* y (* x y))))
double code(double x, double y) {
double tmp;
if (y <= 1.0) {
tmp = x;
} else {
tmp = y * (x * y);
}
return tmp;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8) :: tmp
if (y <= 1.0d0) then
tmp = x
else
tmp = y * (x * y)
end if
code = tmp
end function
public static double code(double x, double y) {
double tmp;
if (y <= 1.0) {
tmp = x;
} else {
tmp = y * (x * y);
}
return tmp;
}
def code(x, y): tmp = 0 if y <= 1.0: tmp = x else: tmp = y * (x * y) return tmp
function code(x, y) tmp = 0.0 if (y <= 1.0) tmp = x; else tmp = Float64(y * Float64(x * y)); end return tmp end
function tmp_2 = code(x, y) tmp = 0.0; if (y <= 1.0) tmp = x; else tmp = y * (x * y); end tmp_2 = tmp; end
code[x_, y_] := If[LessEqual[y, 1.0], x, N[(y * N[(x * y), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq 1:\\
\;\;\;\;x\\
\mathbf{else}:\\
\;\;\;\;y \cdot \left(x \cdot y\right)\\
\end{array}
\end{array}
if y < 1Initial program 97.4%
Taylor expanded in y around 0 69.1%
if 1 < y Initial program 88.4%
add-sqr-sqrt37.6%
sqrt-unprod29.4%
pow1/229.4%
pow229.4%
add-sqr-sqrt29.0%
pow-prod-down29.0%
pow-prod-up29.0%
*-commutative29.0%
sqrt-prod29.0%
hypot-1-def36.6%
metadata-eval36.6%
Applied egg-rr36.6%
unpow1/236.6%
metadata-eval36.6%
pow-sqr36.6%
exp-to-pow35.6%
exp-to-pow35.4%
rem-sqrt-square44.1%
exp-to-pow46.5%
unpow246.5%
fabs-sqr46.5%
unpow246.5%
Simplified46.5%
Taylor expanded in y around inf 46.4%
unpow246.4%
swap-sqr37.4%
add-sqr-sqrt88.2%
associate-*r*99.7%
Applied egg-rr99.7%
Final simplification78.1%
(FPCore (x y) :precision binary64 x)
double code(double x, double y) {
return x;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = x
end function
public static double code(double x, double y) {
return x;
}
def code(x, y): return x
function code(x, y) return x end
function tmp = code(x, y) tmp = x; end
code[x_, y_] := x
\begin{array}{l}
\\
x
\end{array}
Initial program 94.7%
Taylor expanded in y around 0 50.1%
Final simplification50.1%
(FPCore (x y) :precision binary64 (+ x (* (* x y) y)))
double code(double x, double y) {
return x + ((x * y) * y);
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = x + ((x * y) * y)
end function
public static double code(double x, double y) {
return x + ((x * y) * y);
}
def code(x, y): return x + ((x * y) * y)
function code(x, y) return Float64(x + Float64(Float64(x * y) * y)) end
function tmp = code(x, y) tmp = x + ((x * y) * y); end
code[x_, y_] := N[(x + N[(N[(x * y), $MachinePrecision] * y), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x + \left(x \cdot y\right) \cdot y
\end{array}
herbie shell --seed 2024029
(FPCore (x y)
:name "Numeric.Integration.TanhSinh:everywhere from integration-0.2.1"
:precision binary64
:herbie-target
(+ x (* (* x y) y))
(* x (+ 1.0 (* y y))))