
(FPCore (x y) :precision binary64 (- (+ x y) (* x y)))
double code(double x, double y) {
return (x + y) - (x * y);
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = (x + y) - (x * y)
end function
public static double code(double x, double y) {
return (x + y) - (x * y);
}
def code(x, y): return (x + y) - (x * y)
function code(x, y) return Float64(Float64(x + y) - Float64(x * y)) end
function tmp = code(x, y) tmp = (x + y) - (x * y); end
code[x_, y_] := N[(N[(x + y), $MachinePrecision] - N[(x * y), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\left(x + y\right) - x \cdot y
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 7 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x y) :precision binary64 (- (+ x y) (* x y)))
double code(double x, double y) {
return (x + y) - (x * y);
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = (x + y) - (x * y)
end function
public static double code(double x, double y) {
return (x + y) - (x * y);
}
def code(x, y): return (x + y) - (x * y)
function code(x, y) return Float64(Float64(x + y) - Float64(x * y)) end
function tmp = code(x, y) tmp = (x + y) - (x * y); end
code[x_, y_] := N[(N[(x + y), $MachinePrecision] - N[(x * y), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\left(x + y\right) - x \cdot y
\end{array}
NOTE: x and y should be sorted in increasing order before calling this function. (FPCore (x y) :precision binary64 (+ y (- x (* y x))))
assert(x < y);
double code(double x, double y) {
return y + (x - (y * x));
}
NOTE: x and y should be sorted in increasing order before calling this function.
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = y + (x - (y * x))
end function
assert x < y;
public static double code(double x, double y) {
return y + (x - (y * x));
}
[x, y] = sort([x, y]) def code(x, y): return y + (x - (y * x))
x, y = sort([x, y]) function code(x, y) return Float64(y + Float64(x - Float64(y * x))) end
x, y = num2cell(sort([x, y])){:}
function tmp = code(x, y)
tmp = y + (x - (y * x));
end
NOTE: x and y should be sorted in increasing order before calling this function. code[x_, y_] := N[(y + N[(x - N[(y * x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
[x, y] = \mathsf{sort}([x, y])\\
\\
y + \left(x - y \cdot x\right)
\end{array}
Initial program 100.0%
+-commutative100.0%
associate--l+100.0%
Applied egg-rr100.0%
Final simplification100.0%
NOTE: x and y should be sorted in increasing order before calling this function. (FPCore (x y) :precision binary64 (if (or (<= x -1.0) (not (<= x 1.0))) (* x (- 1.0 y)) (+ y x)))
assert(x < y);
double code(double x, double y) {
double tmp;
if ((x <= -1.0) || !(x <= 1.0)) {
tmp = x * (1.0 - y);
} else {
tmp = y + x;
}
return tmp;
}
NOTE: x and y should be sorted in increasing order before calling this function.
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8) :: tmp
if ((x <= (-1.0d0)) .or. (.not. (x <= 1.0d0))) then
tmp = x * (1.0d0 - y)
else
tmp = y + x
end if
code = tmp
end function
assert x < y;
public static double code(double x, double y) {
double tmp;
if ((x <= -1.0) || !(x <= 1.0)) {
tmp = x * (1.0 - y);
} else {
tmp = y + x;
}
return tmp;
}
[x, y] = sort([x, y]) def code(x, y): tmp = 0 if (x <= -1.0) or not (x <= 1.0): tmp = x * (1.0 - y) else: tmp = y + x return tmp
x, y = sort([x, y]) function code(x, y) tmp = 0.0 if ((x <= -1.0) || !(x <= 1.0)) tmp = Float64(x * Float64(1.0 - y)); else tmp = Float64(y + x); end return tmp end
x, y = num2cell(sort([x, y])){:}
function tmp_2 = code(x, y)
tmp = 0.0;
if ((x <= -1.0) || ~((x <= 1.0)))
tmp = x * (1.0 - y);
else
tmp = y + x;
end
tmp_2 = tmp;
end
NOTE: x and y should be sorted in increasing order before calling this function. code[x_, y_] := If[Or[LessEqual[x, -1.0], N[Not[LessEqual[x, 1.0]], $MachinePrecision]], N[(x * N[(1.0 - y), $MachinePrecision]), $MachinePrecision], N[(y + x), $MachinePrecision]]
\begin{array}{l}
[x, y] = \mathsf{sort}([x, y])\\
\\
\begin{array}{l}
\mathbf{if}\;x \leq -1 \lor \neg \left(x \leq 1\right):\\
\;\;\;\;x \cdot \left(1 - y\right)\\
\mathbf{else}:\\
\;\;\;\;y + x\\
\end{array}
\end{array}
if x < -1 or 1 < x Initial program 100.0%
Taylor expanded in x around inf 97.2%
if -1 < x < 1Initial program 100.0%
+-commutative100.0%
associate--l+100.0%
Applied egg-rr100.0%
Taylor expanded in y around 0 99.9%
Final simplification98.6%
NOTE: x and y should be sorted in increasing order before calling this function. (FPCore (x y) :precision binary64 (if (<= y -6e-6) (* x (- 1.0 y)) (if (<= y 1.0) (+ y x) (- y (* y x)))))
assert(x < y);
double code(double x, double y) {
double tmp;
if (y <= -6e-6) {
tmp = x * (1.0 - y);
} else if (y <= 1.0) {
tmp = y + x;
} else {
tmp = y - (y * x);
}
return tmp;
}
NOTE: x and y should be sorted in increasing order before calling this function.
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8) :: tmp
if (y <= (-6d-6)) then
tmp = x * (1.0d0 - y)
else if (y <= 1.0d0) then
tmp = y + x
else
tmp = y - (y * x)
end if
code = tmp
end function
assert x < y;
public static double code(double x, double y) {
double tmp;
if (y <= -6e-6) {
tmp = x * (1.0 - y);
} else if (y <= 1.0) {
tmp = y + x;
} else {
tmp = y - (y * x);
}
return tmp;
}
[x, y] = sort([x, y]) def code(x, y): tmp = 0 if y <= -6e-6: tmp = x * (1.0 - y) elif y <= 1.0: tmp = y + x else: tmp = y - (y * x) return tmp
x, y = sort([x, y]) function code(x, y) tmp = 0.0 if (y <= -6e-6) tmp = Float64(x * Float64(1.0 - y)); elseif (y <= 1.0) tmp = Float64(y + x); else tmp = Float64(y - Float64(y * x)); end return tmp end
x, y = num2cell(sort([x, y])){:}
function tmp_2 = code(x, y)
tmp = 0.0;
if (y <= -6e-6)
tmp = x * (1.0 - y);
elseif (y <= 1.0)
tmp = y + x;
else
tmp = y - (y * x);
end
tmp_2 = tmp;
end
NOTE: x and y should be sorted in increasing order before calling this function. code[x_, y_] := If[LessEqual[y, -6e-6], N[(x * N[(1.0 - y), $MachinePrecision]), $MachinePrecision], If[LessEqual[y, 1.0], N[(y + x), $MachinePrecision], N[(y - N[(y * x), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}
[x, y] = \mathsf{sort}([x, y])\\
\\
\begin{array}{l}
\mathbf{if}\;y \leq -6 \cdot 10^{-6}:\\
\;\;\;\;x \cdot \left(1 - y\right)\\
\mathbf{elif}\;y \leq 1:\\
\;\;\;\;y + x\\
\mathbf{else}:\\
\;\;\;\;y - y \cdot x\\
\end{array}
\end{array}
if y < -6.0000000000000002e-6Initial program 100.0%
Taylor expanded in x around inf 46.4%
if -6.0000000000000002e-6 < y < 1Initial program 100.0%
+-commutative100.0%
associate--l+100.0%
Applied egg-rr100.0%
Taylor expanded in y around 0 98.9%
if 1 < y Initial program 100.0%
+-commutative100.0%
associate--l+100.0%
Applied egg-rr100.0%
Taylor expanded in y around inf 98.9%
mul-1-neg98.9%
distribute-rgt-neg-out98.9%
Simplified98.9%
Final simplification85.6%
NOTE: x and y should be sorted in increasing order before calling this function. (FPCore (x y) :precision binary64 (if (<= y -0.00027) (* x (- 1.0 y)) (if (<= y 1.0) (+ y x) (* y (- 1.0 x)))))
assert(x < y);
double code(double x, double y) {
double tmp;
if (y <= -0.00027) {
tmp = x * (1.0 - y);
} else if (y <= 1.0) {
tmp = y + x;
} else {
tmp = y * (1.0 - x);
}
return tmp;
}
NOTE: x and y should be sorted in increasing order before calling this function.
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8) :: tmp
if (y <= (-0.00027d0)) then
tmp = x * (1.0d0 - y)
else if (y <= 1.0d0) then
tmp = y + x
else
tmp = y * (1.0d0 - x)
end if
code = tmp
end function
assert x < y;
public static double code(double x, double y) {
double tmp;
if (y <= -0.00027) {
tmp = x * (1.0 - y);
} else if (y <= 1.0) {
tmp = y + x;
} else {
tmp = y * (1.0 - x);
}
return tmp;
}
[x, y] = sort([x, y]) def code(x, y): tmp = 0 if y <= -0.00027: tmp = x * (1.0 - y) elif y <= 1.0: tmp = y + x else: tmp = y * (1.0 - x) return tmp
x, y = sort([x, y]) function code(x, y) tmp = 0.0 if (y <= -0.00027) tmp = Float64(x * Float64(1.0 - y)); elseif (y <= 1.0) tmp = Float64(y + x); else tmp = Float64(y * Float64(1.0 - x)); end return tmp end
x, y = num2cell(sort([x, y])){:}
function tmp_2 = code(x, y)
tmp = 0.0;
if (y <= -0.00027)
tmp = x * (1.0 - y);
elseif (y <= 1.0)
tmp = y + x;
else
tmp = y * (1.0 - x);
end
tmp_2 = tmp;
end
NOTE: x and y should be sorted in increasing order before calling this function. code[x_, y_] := If[LessEqual[y, -0.00027], N[(x * N[(1.0 - y), $MachinePrecision]), $MachinePrecision], If[LessEqual[y, 1.0], N[(y + x), $MachinePrecision], N[(y * N[(1.0 - x), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}
[x, y] = \mathsf{sort}([x, y])\\
\\
\begin{array}{l}
\mathbf{if}\;y \leq -0.00027:\\
\;\;\;\;x \cdot \left(1 - y\right)\\
\mathbf{elif}\;y \leq 1:\\
\;\;\;\;y + x\\
\mathbf{else}:\\
\;\;\;\;y \cdot \left(1 - x\right)\\
\end{array}
\end{array}
if y < -2.70000000000000003e-4Initial program 100.0%
Taylor expanded in x around inf 46.4%
if -2.70000000000000003e-4 < y < 1Initial program 100.0%
+-commutative100.0%
associate--l+100.0%
Applied egg-rr100.0%
Taylor expanded in y around 0 98.9%
if 1 < y Initial program 100.0%
Taylor expanded in y around inf 98.9%
NOTE: x and y should be sorted in increasing order before calling this function. (FPCore (x y) :precision binary64 (if (<= x -4.6e-114) x y))
assert(x < y);
double code(double x, double y) {
double tmp;
if (x <= -4.6e-114) {
tmp = x;
} else {
tmp = y;
}
return tmp;
}
NOTE: x and y should be sorted in increasing order before calling this function.
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8) :: tmp
if (x <= (-4.6d-114)) then
tmp = x
else
tmp = y
end if
code = tmp
end function
assert x < y;
public static double code(double x, double y) {
double tmp;
if (x <= -4.6e-114) {
tmp = x;
} else {
tmp = y;
}
return tmp;
}
[x, y] = sort([x, y]) def code(x, y): tmp = 0 if x <= -4.6e-114: tmp = x else: tmp = y return tmp
x, y = sort([x, y]) function code(x, y) tmp = 0.0 if (x <= -4.6e-114) tmp = x; else tmp = y; end return tmp end
x, y = num2cell(sort([x, y])){:}
function tmp_2 = code(x, y)
tmp = 0.0;
if (x <= -4.6e-114)
tmp = x;
else
tmp = y;
end
tmp_2 = tmp;
end
NOTE: x and y should be sorted in increasing order before calling this function. code[x_, y_] := If[LessEqual[x, -4.6e-114], x, y]
\begin{array}{l}
[x, y] = \mathsf{sort}([x, y])\\
\\
\begin{array}{l}
\mathbf{if}\;x \leq -4.6 \cdot 10^{-114}:\\
\;\;\;\;x\\
\mathbf{else}:\\
\;\;\;\;y\\
\end{array}
\end{array}
if x < -4.5999999999999999e-114Initial program 100.0%
Taylor expanded in y around 0 55.6%
if -4.5999999999999999e-114 < x Initial program 100.0%
Taylor expanded in x around 0 45.6%
NOTE: x and y should be sorted in increasing order before calling this function. (FPCore (x y) :precision binary64 (+ y x))
assert(x < y);
double code(double x, double y) {
return y + x;
}
NOTE: x and y should be sorted in increasing order before calling this function.
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = y + x
end function
assert x < y;
public static double code(double x, double y) {
return y + x;
}
[x, y] = sort([x, y]) def code(x, y): return y + x
x, y = sort([x, y]) function code(x, y) return Float64(y + x) end
x, y = num2cell(sort([x, y])){:}
function tmp = code(x, y)
tmp = y + x;
end
NOTE: x and y should be sorted in increasing order before calling this function. code[x_, y_] := N[(y + x), $MachinePrecision]
\begin{array}{l}
[x, y] = \mathsf{sort}([x, y])\\
\\
y + x
\end{array}
Initial program 100.0%
+-commutative100.0%
associate--l+100.0%
Applied egg-rr100.0%
Taylor expanded in y around 0 77.1%
NOTE: x and y should be sorted in increasing order before calling this function. (FPCore (x y) :precision binary64 x)
assert(x < y);
double code(double x, double y) {
return x;
}
NOTE: x and y should be sorted in increasing order before calling this function.
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = x
end function
assert x < y;
public static double code(double x, double y) {
return x;
}
[x, y] = sort([x, y]) def code(x, y): return x
x, y = sort([x, y]) function code(x, y) return x end
x, y = num2cell(sort([x, y])){:}
function tmp = code(x, y)
tmp = x;
end
NOTE: x and y should be sorted in increasing order before calling this function. code[x_, y_] := x
\begin{array}{l}
[x, y] = \mathsf{sort}([x, y])\\
\\
x
\end{array}
Initial program 100.0%
Taylor expanded in y around 0 43.6%
herbie shell --seed 2024096
(FPCore (x y)
:name "Data.Colour.RGBSpace.HSL:hsl from colour-2.3.3, A"
:precision binary64
(- (+ x y) (* x y)))