
(FPCore (x y) :precision binary64 (* (* (* x 3.0) x) y))
double code(double x, double y) {
return ((x * 3.0) * x) * y;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = ((x * 3.0d0) * x) * y
end function
public static double code(double x, double y) {
return ((x * 3.0) * x) * y;
}
def code(x, y): return ((x * 3.0) * x) * y
function code(x, y) return Float64(Float64(Float64(x * 3.0) * x) * y) end
function tmp = code(x, y) tmp = ((x * 3.0) * x) * y; end
code[x_, y_] := N[(N[(N[(x * 3.0), $MachinePrecision] * x), $MachinePrecision] * y), $MachinePrecision]
\begin{array}{l}
\\
\left(\left(x \cdot 3\right) \cdot x\right) \cdot y
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 3 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x y) :precision binary64 (* (* (* x 3.0) x) y))
double code(double x, double y) {
return ((x * 3.0) * x) * y;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = ((x * 3.0d0) * x) * y
end function
public static double code(double x, double y) {
return ((x * 3.0) * x) * y;
}
def code(x, y): return ((x * 3.0) * x) * y
function code(x, y) return Float64(Float64(Float64(x * 3.0) * x) * y) end
function tmp = code(x, y) tmp = ((x * 3.0) * x) * y; end
code[x_, y_] := N[(N[(N[(x * 3.0), $MachinePrecision] * x), $MachinePrecision] * y), $MachinePrecision]
\begin{array}{l}
\\
\left(\left(x \cdot 3\right) \cdot x\right) \cdot y
\end{array}
(FPCore (x y) :precision binary64 (* x (* 3.0 (* x y))))
double code(double x, double y) {
return x * (3.0 * (x * y));
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = x * (3.0d0 * (x * y))
end function
public static double code(double x, double y) {
return x * (3.0 * (x * y));
}
def code(x, y): return x * (3.0 * (x * y))
function code(x, y) return Float64(x * Float64(3.0 * Float64(x * y))) end
function tmp = code(x, y) tmp = x * (3.0 * (x * y)); end
code[x_, y_] := N[(x * N[(3.0 * N[(x * y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x \cdot \left(3 \cdot \left(x \cdot y\right)\right)
\end{array}
Initial program 88.4%
*-commutative88.4%
associate-*l*88.4%
Simplified88.4%
associate-*r*88.4%
*-commutative88.4%
associate-*r*99.6%
expm1-log1p-u76.1%
expm1-udef51.9%
log1p-udef51.9%
add-exp-log75.4%
*-commutative75.4%
associate-*l*75.4%
Applied egg-rr75.4%
add-exp-log51.6%
associate--l+51.7%
log1p-def51.7%
associate-*r*49.4%
*-commutative49.4%
associate-*r*49.4%
*-commutative49.4%
add-exp-log48.8%
expm1-def48.8%
log1p-expm1-u56.2%
associate-*r*56.2%
log-prod44.8%
add-sqr-sqrt44.8%
swap-sqr44.8%
unpow244.8%
log-prod56.2%
add-exp-log88.2%
Applied egg-rr99.7%
Final simplification99.7%
(FPCore (x y) :precision binary64 (* 3.0 (* y (* x x))))
double code(double x, double y) {
return 3.0 * (y * (x * x));
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = 3.0d0 * (y * (x * x))
end function
public static double code(double x, double y) {
return 3.0 * (y * (x * x));
}
def code(x, y): return 3.0 * (y * (x * x))
function code(x, y) return Float64(3.0 * Float64(y * Float64(x * x))) end
function tmp = code(x, y) tmp = 3.0 * (y * (x * x)); end
code[x_, y_] := N[(3.0 * N[(y * N[(x * x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
3 \cdot \left(y \cdot \left(x \cdot x\right)\right)
\end{array}
Initial program 88.4%
*-commutative88.4%
associate-*l*88.4%
Simplified88.4%
Taylor expanded in x around 0 88.3%
unpow288.3%
Simplified88.3%
Final simplification88.3%
(FPCore (x y) :precision binary64 (* y (* 3.0 (* x x))))
double code(double x, double y) {
return y * (3.0 * (x * x));
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = y * (3.0d0 * (x * x))
end function
public static double code(double x, double y) {
return y * (3.0 * (x * x));
}
def code(x, y): return y * (3.0 * (x * x))
function code(x, y) return Float64(y * Float64(3.0 * Float64(x * x))) end
function tmp = code(x, y) tmp = y * (3.0 * (x * x)); end
code[x_, y_] := N[(y * N[(3.0 * N[(x * x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
y \cdot \left(3 \cdot \left(x \cdot x\right)\right)
\end{array}
Initial program 88.4%
*-commutative88.4%
associate-*l*88.4%
Simplified88.4%
Final simplification88.4%
(FPCore (x y) :precision binary64 (* (* x 3.0) (* x y)))
double code(double x, double y) {
return (x * 3.0) * (x * y);
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = (x * 3.0d0) * (x * y)
end function
public static double code(double x, double y) {
return (x * 3.0) * (x * y);
}
def code(x, y): return (x * 3.0) * (x * y)
function code(x, y) return Float64(Float64(x * 3.0) * Float64(x * y)) end
function tmp = code(x, y) tmp = (x * 3.0) * (x * y); end
code[x_, y_] := N[(N[(x * 3.0), $MachinePrecision] * N[(x * y), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\left(x \cdot 3\right) \cdot \left(x \cdot y\right)
\end{array}
herbie shell --seed 2023229
(FPCore (x y)
:name "Diagrams.Segment:$catParam from diagrams-lib-1.3.0.3, A"
:precision binary64
:herbie-target
(* (* x 3.0) (* x y))
(* (* (* x 3.0) x) y))