
(FPCore (x y) :precision binary64 (+ (- 1.0 x) (* y (sqrt x))))
double code(double x, double y) {
return (1.0 - x) + (y * sqrt(x));
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = (1.0d0 - x) + (y * sqrt(x))
end function
public static double code(double x, double y) {
return (1.0 - x) + (y * Math.sqrt(x));
}
def code(x, y): return (1.0 - x) + (y * math.sqrt(x))
function code(x, y) return Float64(Float64(1.0 - x) + Float64(y * sqrt(x))) end
function tmp = code(x, y) tmp = (1.0 - x) + (y * sqrt(x)); end
code[x_, y_] := N[(N[(1.0 - x), $MachinePrecision] + N[(y * N[Sqrt[x], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\left(1 - x\right) + y \cdot \sqrt{x}
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 8 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x y) :precision binary64 (+ (- 1.0 x) (* y (sqrt x))))
double code(double x, double y) {
return (1.0 - x) + (y * sqrt(x));
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = (1.0d0 - x) + (y * sqrt(x))
end function
public static double code(double x, double y) {
return (1.0 - x) + (y * Math.sqrt(x));
}
def code(x, y): return (1.0 - x) + (y * math.sqrt(x))
function code(x, y) return Float64(Float64(1.0 - x) + Float64(y * sqrt(x))) end
function tmp = code(x, y) tmp = (1.0 - x) + (y * sqrt(x)); end
code[x_, y_] := N[(N[(1.0 - x), $MachinePrecision] + N[(y * N[Sqrt[x], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\left(1 - x\right) + y \cdot \sqrt{x}
\end{array}
(FPCore (x y) :precision binary64 (fma y (sqrt x) (- 1.0 x)))
double code(double x, double y) {
return fma(y, sqrt(x), (1.0 - x));
}
function code(x, y) return fma(y, sqrt(x), Float64(1.0 - x)) end
code[x_, y_] := N[(y * N[Sqrt[x], $MachinePrecision] + N[(1.0 - x), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\mathsf{fma}\left(y, \sqrt{x}, 1 - x\right)
\end{array}
Initial program 99.9%
+-commutative99.9%
fma-define99.9%
Simplified99.9%
Final simplification99.9%
(FPCore (x y) :precision binary64 (if (or (<= y -2.25e+22) (not (<= y 1.6e+86))) (+ 1.0 (* y (sqrt x))) (- 1.0 x)))
double code(double x, double y) {
double tmp;
if ((y <= -2.25e+22) || !(y <= 1.6e+86)) {
tmp = 1.0 + (y * sqrt(x));
} else {
tmp = 1.0 - x;
}
return tmp;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8) :: tmp
if ((y <= (-2.25d+22)) .or. (.not. (y <= 1.6d+86))) then
tmp = 1.0d0 + (y * sqrt(x))
else
tmp = 1.0d0 - x
end if
code = tmp
end function
public static double code(double x, double y) {
double tmp;
if ((y <= -2.25e+22) || !(y <= 1.6e+86)) {
tmp = 1.0 + (y * Math.sqrt(x));
} else {
tmp = 1.0 - x;
}
return tmp;
}
def code(x, y): tmp = 0 if (y <= -2.25e+22) or not (y <= 1.6e+86): tmp = 1.0 + (y * math.sqrt(x)) else: tmp = 1.0 - x return tmp
function code(x, y) tmp = 0.0 if ((y <= -2.25e+22) || !(y <= 1.6e+86)) tmp = Float64(1.0 + Float64(y * sqrt(x))); else tmp = Float64(1.0 - x); end return tmp end
function tmp_2 = code(x, y) tmp = 0.0; if ((y <= -2.25e+22) || ~((y <= 1.6e+86))) tmp = 1.0 + (y * sqrt(x)); else tmp = 1.0 - x; end tmp_2 = tmp; end
code[x_, y_] := If[Or[LessEqual[y, -2.25e+22], N[Not[LessEqual[y, 1.6e+86]], $MachinePrecision]], N[(1.0 + N[(y * N[Sqrt[x], $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(1.0 - x), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -2.25 \cdot 10^{+22} \lor \neg \left(y \leq 1.6 \cdot 10^{+86}\right):\\
\;\;\;\;1 + y \cdot \sqrt{x}\\
\mathbf{else}:\\
\;\;\;\;1 - x\\
\end{array}
\end{array}
if y < -2.2499999999999999e22 or 1.6e86 < y Initial program 99.8%
Taylor expanded in x around 0 91.0%
if -2.2499999999999999e22 < y < 1.6e86Initial program 100.0%
Taylor expanded in y around 0 99.5%
Final simplification96.2%
(FPCore (x y) :precision binary64 (if (or (<= y -1.8e+128) (not (<= y 5.4e+86))) (* y (sqrt x)) (- 1.0 x)))
double code(double x, double y) {
double tmp;
if ((y <= -1.8e+128) || !(y <= 5.4e+86)) {
tmp = y * sqrt(x);
} else {
tmp = 1.0 - x;
}
return tmp;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8) :: tmp
if ((y <= (-1.8d+128)) .or. (.not. (y <= 5.4d+86))) then
tmp = y * sqrt(x)
else
tmp = 1.0d0 - x
end if
code = tmp
end function
public static double code(double x, double y) {
double tmp;
if ((y <= -1.8e+128) || !(y <= 5.4e+86)) {
tmp = y * Math.sqrt(x);
} else {
tmp = 1.0 - x;
}
return tmp;
}
def code(x, y): tmp = 0 if (y <= -1.8e+128) or not (y <= 5.4e+86): tmp = y * math.sqrt(x) else: tmp = 1.0 - x return tmp
function code(x, y) tmp = 0.0 if ((y <= -1.8e+128) || !(y <= 5.4e+86)) tmp = Float64(y * sqrt(x)); else tmp = Float64(1.0 - x); end return tmp end
function tmp_2 = code(x, y) tmp = 0.0; if ((y <= -1.8e+128) || ~((y <= 5.4e+86))) tmp = y * sqrt(x); else tmp = 1.0 - x; end tmp_2 = tmp; end
code[x_, y_] := If[Or[LessEqual[y, -1.8e+128], N[Not[LessEqual[y, 5.4e+86]], $MachinePrecision]], N[(y * N[Sqrt[x], $MachinePrecision]), $MachinePrecision], N[(1.0 - x), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -1.8 \cdot 10^{+128} \lor \neg \left(y \leq 5.4 \cdot 10^{+86}\right):\\
\;\;\;\;y \cdot \sqrt{x}\\
\mathbf{else}:\\
\;\;\;\;1 - x\\
\end{array}
\end{array}
if y < -1.80000000000000014e128 or 5.40000000000000036e86 < y Initial program 99.7%
+-commutative99.7%
*-commutative99.7%
add-sqr-sqrt99.4%
associate-*l*99.4%
fma-define99.4%
pow1/299.4%
sqrt-pow199.5%
metadata-eval99.5%
pow1/299.5%
sqrt-pow199.5%
metadata-eval99.5%
Applied egg-rr99.5%
Taylor expanded in y around inf 96.7%
if -1.80000000000000014e128 < y < 5.40000000000000036e86Initial program 100.0%
Taylor expanded in y around 0 90.9%
Final simplification92.4%
(FPCore (x y) :precision binary64 (let* ((t_0 (* y (sqrt x)))) (if (<= x 0.6) (+ 1.0 t_0) (- t_0 x))))
double code(double x, double y) {
double t_0 = y * sqrt(x);
double tmp;
if (x <= 0.6) {
tmp = 1.0 + t_0;
} else {
tmp = t_0 - x;
}
return tmp;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8) :: t_0
real(8) :: tmp
t_0 = y * sqrt(x)
if (x <= 0.6d0) then
tmp = 1.0d0 + t_0
else
tmp = t_0 - x
end if
code = tmp
end function
public static double code(double x, double y) {
double t_0 = y * Math.sqrt(x);
double tmp;
if (x <= 0.6) {
tmp = 1.0 + t_0;
} else {
tmp = t_0 - x;
}
return tmp;
}
def code(x, y): t_0 = y * math.sqrt(x) tmp = 0 if x <= 0.6: tmp = 1.0 + t_0 else: tmp = t_0 - x return tmp
function code(x, y) t_0 = Float64(y * sqrt(x)) tmp = 0.0 if (x <= 0.6) tmp = Float64(1.0 + t_0); else tmp = Float64(t_0 - x); end return tmp end
function tmp_2 = code(x, y) t_0 = y * sqrt(x); tmp = 0.0; if (x <= 0.6) tmp = 1.0 + t_0; else tmp = t_0 - x; end tmp_2 = tmp; end
code[x_, y_] := Block[{t$95$0 = N[(y * N[Sqrt[x], $MachinePrecision]), $MachinePrecision]}, If[LessEqual[x, 0.6], N[(1.0 + t$95$0), $MachinePrecision], N[(t$95$0 - x), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := y \cdot \sqrt{x}\\
\mathbf{if}\;x \leq 0.6:\\
\;\;\;\;1 + t\_0\\
\mathbf{else}:\\
\;\;\;\;t\_0 - x\\
\end{array}
\end{array}
if x < 0.599999999999999978Initial program 99.9%
Taylor expanded in x around 0 99.1%
if 0.599999999999999978 < x Initial program 99.9%
Taylor expanded in x around inf 98.9%
Taylor expanded in x around 0 99.0%
neg-mul-199.0%
+-commutative99.0%
*-commutative99.0%
sub-neg99.0%
Simplified99.0%
Final simplification99.0%
(FPCore (x y) :precision binary64 (+ (- 1.0 x) (* y (sqrt x))))
double code(double x, double y) {
return (1.0 - x) + (y * sqrt(x));
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = (1.0d0 - x) + (y * sqrt(x))
end function
public static double code(double x, double y) {
return (1.0 - x) + (y * Math.sqrt(x));
}
def code(x, y): return (1.0 - x) + (y * math.sqrt(x))
function code(x, y) return Float64(Float64(1.0 - x) + Float64(y * sqrt(x))) end
function tmp = code(x, y) tmp = (1.0 - x) + (y * sqrt(x)); end
code[x_, y_] := N[(N[(1.0 - x), $MachinePrecision] + N[(y * N[Sqrt[x], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\left(1 - x\right) + y \cdot \sqrt{x}
\end{array}
Initial program 99.9%
Final simplification99.9%
(FPCore (x y) :precision binary64 (if (<= x 1.0) 1.0 (- x)))
double code(double x, double y) {
double tmp;
if (x <= 1.0) {
tmp = 1.0;
} else {
tmp = -x;
}
return tmp;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8) :: tmp
if (x <= 1.0d0) then
tmp = 1.0d0
else
tmp = -x
end if
code = tmp
end function
public static double code(double x, double y) {
double tmp;
if (x <= 1.0) {
tmp = 1.0;
} else {
tmp = -x;
}
return tmp;
}
def code(x, y): tmp = 0 if x <= 1.0: tmp = 1.0 else: tmp = -x return tmp
function code(x, y) tmp = 0.0 if (x <= 1.0) tmp = 1.0; else tmp = Float64(-x); end return tmp end
function tmp_2 = code(x, y) tmp = 0.0; if (x <= 1.0) tmp = 1.0; else tmp = -x; end tmp_2 = tmp; end
code[x_, y_] := If[LessEqual[x, 1.0], 1.0, (-x)]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq 1:\\
\;\;\;\;1\\
\mathbf{else}:\\
\;\;\;\;-x\\
\end{array}
\end{array}
if x < 1Initial program 99.9%
Taylor expanded in x around 0 99.1%
Taylor expanded in y around 0 65.1%
if 1 < x Initial program 99.9%
Taylor expanded in x around inf 98.9%
Taylor expanded in y around 0 68.0%
neg-mul-168.0%
Simplified68.0%
Final simplification66.6%
(FPCore (x y) :precision binary64 (- 1.0 x))
double code(double x, double y) {
return 1.0 - x;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = 1.0d0 - x
end function
public static double code(double x, double y) {
return 1.0 - x;
}
def code(x, y): return 1.0 - x
function code(x, y) return Float64(1.0 - x) end
function tmp = code(x, y) tmp = 1.0 - x; end
code[x_, y_] := N[(1.0 - x), $MachinePrecision]
\begin{array}{l}
\\
1 - x
\end{array}
Initial program 99.9%
Taylor expanded in y around 0 67.5%
Final simplification67.5%
(FPCore (x y) :precision binary64 1.0)
double code(double x, double y) {
return 1.0;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = 1.0d0
end function
public static double code(double x, double y) {
return 1.0;
}
def code(x, y): return 1.0
function code(x, y) return 1.0 end
function tmp = code(x, y) tmp = 1.0; end
code[x_, y_] := 1.0
\begin{array}{l}
\\
1
\end{array}
Initial program 99.9%
Taylor expanded in x around 0 64.6%
Taylor expanded in y around 0 32.5%
Final simplification32.5%
herbie shell --seed 2024074
(FPCore (x y)
:name "Numeric.SpecFunctions:invIncompleteBetaWorker from math-functions-0.1.5.2, E"
:precision binary64
(+ (- 1.0 x) (* y (sqrt x))))