
(FPCore (x y) :precision binary64 (+ (+ (* x 2.0) (* x x)) (* y y)))
double code(double x, double y) {
return ((x * 2.0) + (x * x)) + (y * y);
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = ((x * 2.0d0) + (x * x)) + (y * y)
end function
public static double code(double x, double y) {
return ((x * 2.0) + (x * x)) + (y * y);
}
def code(x, y): return ((x * 2.0) + (x * x)) + (y * y)
function code(x, y) return Float64(Float64(Float64(x * 2.0) + Float64(x * x)) + Float64(y * y)) end
function tmp = code(x, y) tmp = ((x * 2.0) + (x * x)) + (y * y); end
code[x_, y_] := N[(N[(N[(x * 2.0), $MachinePrecision] + N[(x * x), $MachinePrecision]), $MachinePrecision] + N[(y * y), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\left(x \cdot 2 + x \cdot x\right) + y \cdot y
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 6 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x y) :precision binary64 (+ (+ (* x 2.0) (* x x)) (* y y)))
double code(double x, double y) {
return ((x * 2.0) + (x * x)) + (y * y);
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = ((x * 2.0d0) + (x * x)) + (y * y)
end function
public static double code(double x, double y) {
return ((x * 2.0) + (x * x)) + (y * y);
}
def code(x, y): return ((x * 2.0) + (x * x)) + (y * y)
function code(x, y) return Float64(Float64(Float64(x * 2.0) + Float64(x * x)) + Float64(y * y)) end
function tmp = code(x, y) tmp = ((x * 2.0) + (x * x)) + (y * y); end
code[x_, y_] := N[(N[(N[(x * 2.0), $MachinePrecision] + N[(x * x), $MachinePrecision]), $MachinePrecision] + N[(y * y), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\left(x \cdot 2 + x \cdot x\right) + y \cdot y
\end{array}
(FPCore (x y) :precision binary64 (+ (* y y) (+ (* x x) (* 2.0 x))))
double code(double x, double y) {
return (y * y) + ((x * x) + (2.0 * x));
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = (y * y) + ((x * x) + (2.0d0 * x))
end function
public static double code(double x, double y) {
return (y * y) + ((x * x) + (2.0 * x));
}
def code(x, y): return (y * y) + ((x * x) + (2.0 * x))
function code(x, y) return Float64(Float64(y * y) + Float64(Float64(x * x) + Float64(2.0 * x))) end
function tmp = code(x, y) tmp = (y * y) + ((x * x) + (2.0 * x)); end
code[x_, y_] := N[(N[(y * y), $MachinePrecision] + N[(N[(x * x), $MachinePrecision] + N[(2.0 * x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
y \cdot y + \left(x \cdot x + 2 \cdot x\right)
\end{array}
Initial program 100.0%
Final simplification100.0%
(FPCore (x y) :precision binary64 (if (<= (+ (* x x) (* 2.0 x)) 5e-6) (fma x 2.0 (* y y)) (fma y y (* x x))))
double code(double x, double y) {
double tmp;
if (((x * x) + (2.0 * x)) <= 5e-6) {
tmp = fma(x, 2.0, (y * y));
} else {
tmp = fma(y, y, (x * x));
}
return tmp;
}
function code(x, y) tmp = 0.0 if (Float64(Float64(x * x) + Float64(2.0 * x)) <= 5e-6) tmp = fma(x, 2.0, Float64(y * y)); else tmp = fma(y, y, Float64(x * x)); end return tmp end
code[x_, y_] := If[LessEqual[N[(N[(x * x), $MachinePrecision] + N[(2.0 * x), $MachinePrecision]), $MachinePrecision], 5e-6], N[(x * 2.0 + N[(y * y), $MachinePrecision]), $MachinePrecision], N[(y * y + N[(x * x), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \cdot x + 2 \cdot x \leq 5 \cdot 10^{-6}:\\
\;\;\;\;\mathsf{fma}\left(x, 2, y \cdot y\right)\\
\mathbf{else}:\\
\;\;\;\;\mathsf{fma}\left(y, y, x \cdot x\right)\\
\end{array}
\end{array}
if (+.f64 (*.f64 x #s(literal 2 binary64)) (*.f64 x x)) < 5.00000000000000041e-6Initial program 100.0%
Taylor expanded in x around 0
*-commutativeN/A
lower-fma.f64N/A
unpow2N/A
lower-*.f64100.0
Applied rewrites100.0%
if 5.00000000000000041e-6 < (+.f64 (*.f64 x #s(literal 2 binary64)) (*.f64 x x)) Initial program 100.0%
Taylor expanded in x around inf
unpow2N/A
lower-*.f6498.4
Applied rewrites98.4%
lift-+.f64N/A
+-commutativeN/A
lift-*.f64N/A
lower-fma.f6498.4
Applied rewrites98.4%
Final simplification99.2%
(FPCore (x y) :precision binary64 (if (<= (+ (* x x) (* 2.0 x)) 2e+141) (fma x 2.0 (* y y)) (* (- x -2.0) x)))
double code(double x, double y) {
double tmp;
if (((x * x) + (2.0 * x)) <= 2e+141) {
tmp = fma(x, 2.0, (y * y));
} else {
tmp = (x - -2.0) * x;
}
return tmp;
}
function code(x, y) tmp = 0.0 if (Float64(Float64(x * x) + Float64(2.0 * x)) <= 2e+141) tmp = fma(x, 2.0, Float64(y * y)); else tmp = Float64(Float64(x - -2.0) * x); end return tmp end
code[x_, y_] := If[LessEqual[N[(N[(x * x), $MachinePrecision] + N[(2.0 * x), $MachinePrecision]), $MachinePrecision], 2e+141], N[(x * 2.0 + N[(y * y), $MachinePrecision]), $MachinePrecision], N[(N[(x - -2.0), $MachinePrecision] * x), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \cdot x + 2 \cdot x \leq 2 \cdot 10^{+141}:\\
\;\;\;\;\mathsf{fma}\left(x, 2, y \cdot y\right)\\
\mathbf{else}:\\
\;\;\;\;\left(x - -2\right) \cdot x\\
\end{array}
\end{array}
if (+.f64 (*.f64 x #s(literal 2 binary64)) (*.f64 x x)) < 2.00000000000000003e141Initial program 100.0%
Taylor expanded in x around 0
*-commutativeN/A
lower-fma.f64N/A
unpow2N/A
lower-*.f6492.6
Applied rewrites92.6%
if 2.00000000000000003e141 < (+.f64 (*.f64 x #s(literal 2 binary64)) (*.f64 x x)) Initial program 100.0%
Taylor expanded in y around 0
unpow2N/A
distribute-rgt-inN/A
*-commutativeN/A
lower-*.f64N/A
+-commutativeN/A
metadata-evalN/A
metadata-evalN/A
sub-negN/A
lower--.f64N/A
metadata-eval89.5
Applied rewrites89.5%
Final simplification91.3%
(FPCore (x y) :precision binary64 (if (<= (+ (* x x) (* 2.0 x)) 2e+141) (* y y) (* x x)))
double code(double x, double y) {
double tmp;
if (((x * x) + (2.0 * x)) <= 2e+141) {
tmp = y * y;
} else {
tmp = x * x;
}
return tmp;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8) :: tmp
if (((x * x) + (2.0d0 * x)) <= 2d+141) then
tmp = y * y
else
tmp = x * x
end if
code = tmp
end function
public static double code(double x, double y) {
double tmp;
if (((x * x) + (2.0 * x)) <= 2e+141) {
tmp = y * y;
} else {
tmp = x * x;
}
return tmp;
}
def code(x, y): tmp = 0 if ((x * x) + (2.0 * x)) <= 2e+141: tmp = y * y else: tmp = x * x return tmp
function code(x, y) tmp = 0.0 if (Float64(Float64(x * x) + Float64(2.0 * x)) <= 2e+141) tmp = Float64(y * y); else tmp = Float64(x * x); end return tmp end
function tmp_2 = code(x, y) tmp = 0.0; if (((x * x) + (2.0 * x)) <= 2e+141) tmp = y * y; else tmp = x * x; end tmp_2 = tmp; end
code[x_, y_] := If[LessEqual[N[(N[(x * x), $MachinePrecision] + N[(2.0 * x), $MachinePrecision]), $MachinePrecision], 2e+141], N[(y * y), $MachinePrecision], N[(x * x), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \cdot x + 2 \cdot x \leq 2 \cdot 10^{+141}:\\
\;\;\;\;y \cdot y\\
\mathbf{else}:\\
\;\;\;\;x \cdot x\\
\end{array}
\end{array}
if (+.f64 (*.f64 x #s(literal 2 binary64)) (*.f64 x x)) < 2.00000000000000003e141Initial program 100.0%
Taylor expanded in y around inf
unpow2N/A
lower-*.f6462.4
Applied rewrites62.4%
if 2.00000000000000003e141 < (+.f64 (*.f64 x #s(literal 2 binary64)) (*.f64 x x)) Initial program 100.0%
Taylor expanded in x around inf
unpow2N/A
lower-*.f6489.5
Applied rewrites89.5%
Final simplification73.4%
(FPCore (x y) :precision binary64 (if (<= (* y y) 6.2e-60) (* (- x -2.0) x) (* y y)))
double code(double x, double y) {
double tmp;
if ((y * y) <= 6.2e-60) {
tmp = (x - -2.0) * x;
} else {
tmp = y * 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) <= 6.2d-60) then
tmp = (x - (-2.0d0)) * x
else
tmp = y * y
end if
code = tmp
end function
public static double code(double x, double y) {
double tmp;
if ((y * y) <= 6.2e-60) {
tmp = (x - -2.0) * x;
} else {
tmp = y * y;
}
return tmp;
}
def code(x, y): tmp = 0 if (y * y) <= 6.2e-60: tmp = (x - -2.0) * x else: tmp = y * y return tmp
function code(x, y) tmp = 0.0 if (Float64(y * y) <= 6.2e-60) tmp = Float64(Float64(x - -2.0) * x); else tmp = Float64(y * y); end return tmp end
function tmp_2 = code(x, y) tmp = 0.0; if ((y * y) <= 6.2e-60) tmp = (x - -2.0) * x; else tmp = y * y; end tmp_2 = tmp; end
code[x_, y_] := If[LessEqual[N[(y * y), $MachinePrecision], 6.2e-60], N[(N[(x - -2.0), $MachinePrecision] * x), $MachinePrecision], N[(y * y), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \cdot y \leq 6.2 \cdot 10^{-60}:\\
\;\;\;\;\left(x - -2\right) \cdot x\\
\mathbf{else}:\\
\;\;\;\;y \cdot y\\
\end{array}
\end{array}
if (*.f64 y y) < 6.19999999999999976e-60Initial program 100.0%
Taylor expanded in y around 0
unpow2N/A
distribute-rgt-inN/A
*-commutativeN/A
lower-*.f64N/A
+-commutativeN/A
metadata-evalN/A
metadata-evalN/A
sub-negN/A
lower--.f64N/A
metadata-eval95.7
Applied rewrites95.7%
if 6.19999999999999976e-60 < (*.f64 y y) Initial program 100.0%
Taylor expanded in y around inf
unpow2N/A
lower-*.f6479.6
Applied rewrites79.6%
(FPCore (x y) :precision binary64 (* x x))
double code(double x, double y) {
return x * x;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = x * x
end function
public static double code(double x, double y) {
return x * x;
}
def code(x, y): return x * x
function code(x, y) return Float64(x * x) end
function tmp = code(x, y) tmp = x * x; end
code[x_, y_] := N[(x * x), $MachinePrecision]
\begin{array}{l}
\\
x \cdot x
\end{array}
Initial program 100.0%
Taylor expanded in x around inf
unpow2N/A
lower-*.f6442.3
Applied rewrites42.3%
(FPCore (x y) :precision binary64 (+ (* y y) (+ (* 2.0 x) (* x x))))
double code(double x, double y) {
return (y * y) + ((2.0 * x) + (x * x));
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = (y * y) + ((2.0d0 * x) + (x * x))
end function
public static double code(double x, double y) {
return (y * y) + ((2.0 * x) + (x * x));
}
def code(x, y): return (y * y) + ((2.0 * x) + (x * x))
function code(x, y) return Float64(Float64(y * y) + Float64(Float64(2.0 * x) + Float64(x * x))) end
function tmp = code(x, y) tmp = (y * y) + ((2.0 * x) + (x * x)); end
code[x_, y_] := N[(N[(y * y), $MachinePrecision] + N[(N[(2.0 * x), $MachinePrecision] + N[(x * x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
y \cdot y + \left(2 \cdot x + x \cdot x\right)
\end{array}
herbie shell --seed 2024254
(FPCore (x y)
:name "Numeric.Log:$clog1p from log-domain-0.10.2.1, A"
:precision binary64
:alt
(! :herbie-platform default (+ (* y y) (+ (* 2 x) (* x x))))
(+ (+ (* x 2.0) (* x x)) (* y y)))