
(FPCore (x y) :precision binary64 (* (* (* x 3.0) y) y))
double code(double x, double y) {
return ((x * 3.0) * y) * y;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = ((x * 3.0d0) * y) * y
end function
public static double code(double x, double y) {
return ((x * 3.0) * y) * y;
}
def code(x, y): return ((x * 3.0) * y) * y
function code(x, y) return Float64(Float64(Float64(x * 3.0) * y) * y) end
function tmp = code(x, y) tmp = ((x * 3.0) * y) * y; end
code[x_, y_] := N[(N[(N[(x * 3.0), $MachinePrecision] * y), $MachinePrecision] * y), $MachinePrecision]
\begin{array}{l}
\\
\left(\left(x \cdot 3\right) \cdot y\right) \cdot y
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 2 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x y) :precision binary64 (* (* (* x 3.0) y) y))
double code(double x, double y) {
return ((x * 3.0) * y) * y;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = ((x * 3.0d0) * y) * y
end function
public static double code(double x, double y) {
return ((x * 3.0) * y) * y;
}
def code(x, y): return ((x * 3.0) * y) * y
function code(x, y) return Float64(Float64(Float64(x * 3.0) * y) * y) end
function tmp = code(x, y) tmp = ((x * 3.0) * y) * y; end
code[x_, y_] := N[(N[(N[(x * 3.0), $MachinePrecision] * y), $MachinePrecision] * y), $MachinePrecision]
\begin{array}{l}
\\
\left(\left(x \cdot 3\right) \cdot y\right) \cdot y
\end{array}
(FPCore (x y) :precision binary64 (* y (* (* 3.0 y) x)))
double code(double x, double y) {
return y * ((3.0 * y) * x);
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = y * ((3.0d0 * y) * x)
end function
public static double code(double x, double y) {
return y * ((3.0 * y) * x);
}
def code(x, y): return y * ((3.0 * y) * x)
function code(x, y) return Float64(y * Float64(Float64(3.0 * y) * x)) end
function tmp = code(x, y) tmp = y * ((3.0 * y) * x); end
code[x_, y_] := N[(y * N[(N[(3.0 * y), $MachinePrecision] * x), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
y \cdot \left(\left(3 \cdot y\right) \cdot x\right)
\end{array}
Initial program 99.7%
add-cube-cbrt98.9%
pow398.9%
*-commutative98.9%
associate-*l*98.9%
Applied egg-rr98.9%
rem-cube-cbrt99.7%
*-commutative99.7%
associate-*r*99.7%
Applied egg-rr99.7%
Final simplification99.7%
(FPCore (x y) :precision binary64 (* 3.0 (* y (* y x))))
double code(double x, double y) {
return 3.0 * (y * (y * x));
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = 3.0d0 * (y * (y * x))
end function
public static double code(double x, double y) {
return 3.0 * (y * (y * x));
}
def code(x, y): return 3.0 * (y * (y * x))
function code(x, y) return Float64(3.0 * Float64(y * Float64(y * x))) end
function tmp = code(x, y) tmp = 3.0 * (y * (y * x)); end
code[x_, y_] := N[(3.0 * N[(y * N[(y * x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
3 \cdot \left(y \cdot \left(y \cdot x\right)\right)
\end{array}
Initial program 99.7%
associate-*l*99.7%
associate-*l*90.5%
Simplified90.5%
Taylor expanded in x around 0 90.5%
unpow290.5%
associate-*l*99.7%
Simplified99.7%
Final simplification99.7%
(FPCore (x y) :precision binary64 (* (* x (* 3.0 y)) y))
double code(double x, double y) {
return (x * (3.0 * y)) * y;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = (x * (3.0d0 * y)) * y
end function
public static double code(double x, double y) {
return (x * (3.0 * y)) * y;
}
def code(x, y): return (x * (3.0 * y)) * y
function code(x, y) return Float64(Float64(x * Float64(3.0 * y)) * y) end
function tmp = code(x, y) tmp = (x * (3.0 * y)) * y; end
code[x_, y_] := N[(N[(x * N[(3.0 * y), $MachinePrecision]), $MachinePrecision] * y), $MachinePrecision]
\begin{array}{l}
\\
\left(x \cdot \left(3 \cdot y\right)\right) \cdot y
\end{array}
herbie shell --seed 2023278
(FPCore (x y)
:name "Diagrams.Segment:$catParam from diagrams-lib-1.3.0.3, B"
:precision binary64
:herbie-target
(* (* x (* 3.0 y)) y)
(* (* (* x 3.0) y) y))