
(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 -1.25e+56) (not (<= y 5.6e+48))) (+ 1.0 (* y (sqrt x))) (- 1.0 x)))
double code(double x, double y) {
double tmp;
if ((y <= -1.25e+56) || !(y <= 5.6e+48)) {
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 <= (-1.25d+56)) .or. (.not. (y <= 5.6d+48))) 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 <= -1.25e+56) || !(y <= 5.6e+48)) {
tmp = 1.0 + (y * Math.sqrt(x));
} else {
tmp = 1.0 - x;
}
return tmp;
}
def code(x, y): tmp = 0 if (y <= -1.25e+56) or not (y <= 5.6e+48): tmp = 1.0 + (y * math.sqrt(x)) else: tmp = 1.0 - x return tmp
function code(x, y) tmp = 0.0 if ((y <= -1.25e+56) || !(y <= 5.6e+48)) 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 <= -1.25e+56) || ~((y <= 5.6e+48))) tmp = 1.0 + (y * sqrt(x)); else tmp = 1.0 - x; end tmp_2 = tmp; end
code[x_, y_] := If[Or[LessEqual[y, -1.25e+56], N[Not[LessEqual[y, 5.6e+48]], $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 -1.25 \cdot 10^{+56} \lor \neg \left(y \leq 5.6 \cdot 10^{+48}\right):\\
\;\;\;\;1 + y \cdot \sqrt{x}\\
\mathbf{else}:\\
\;\;\;\;1 - x\\
\end{array}
\end{array}
if y < -1.25000000000000006e56 or 5.60000000000000025e48 < y Initial program 99.7%
Taylor expanded in x around 0 96.5%
if -1.25000000000000006e56 < y < 5.60000000000000025e48Initial program 100.0%
Taylor expanded in y around 0 99.4%
Final simplification98.2%
(FPCore (x y) :precision binary64 (if (or (<= y -3.2e+64) (not (<= y 1.4e+82))) (* y (sqrt x)) (- 1.0 x)))
double code(double x, double y) {
double tmp;
if ((y <= -3.2e+64) || !(y <= 1.4e+82)) {
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 <= (-3.2d+64)) .or. (.not. (y <= 1.4d+82))) 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 <= -3.2e+64) || !(y <= 1.4e+82)) {
tmp = y * Math.sqrt(x);
} else {
tmp = 1.0 - x;
}
return tmp;
}
def code(x, y): tmp = 0 if (y <= -3.2e+64) or not (y <= 1.4e+82): tmp = y * math.sqrt(x) else: tmp = 1.0 - x return tmp
function code(x, y) tmp = 0.0 if ((y <= -3.2e+64) || !(y <= 1.4e+82)) 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 <= -3.2e+64) || ~((y <= 1.4e+82))) tmp = y * sqrt(x); else tmp = 1.0 - x; end tmp_2 = tmp; end
code[x_, y_] := If[Or[LessEqual[y, -3.2e+64], N[Not[LessEqual[y, 1.4e+82]], $MachinePrecision]], N[(y * N[Sqrt[x], $MachinePrecision]), $MachinePrecision], N[(1.0 - x), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -3.2 \cdot 10^{+64} \lor \neg \left(y \leq 1.4 \cdot 10^{+82}\right):\\
\;\;\;\;y \cdot \sqrt{x}\\
\mathbf{else}:\\
\;\;\;\;1 - x\\
\end{array}
\end{array}
if y < -3.20000000000000019e64 or 1.4e82 < y Initial program 99.7%
+-commutative99.7%
*-commutative99.7%
add-sqr-sqrt99.0%
associate-*l*99.1%
fma-define99.1%
pow1/299.1%
sqrt-pow199.3%
metadata-eval99.3%
pow1/299.3%
sqrt-pow199.2%
metadata-eval99.2%
Applied egg-rr99.2%
Taylor expanded in y around inf 93.5%
if -3.20000000000000019e64 < y < 1.4e82Initial program 100.0%
Taylor expanded in y around 0 97.7%
Final simplification96.1%
(FPCore (x y) :precision binary64 (let* ((t_0 (* y (sqrt x)))) (if (<= x 0.088) (+ 1.0 t_0) (- t_0 x))))
double code(double x, double y) {
double t_0 = y * sqrt(x);
double tmp;
if (x <= 0.088) {
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 <= 0.088d0) 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 <= 0.088) {
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 <= 0.088: 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 <= 0.088) 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 <= 0.088) 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, 0.088], 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 0.088:\\
\;\;\;\;1 + t\_0\\
\mathbf{else}:\\
\;\;\;\;t\_0 - x\\
\end{array}
\end{array}
if x < 0.087999999999999995Initial program 99.9%
Taylor expanded in x around 0 98.8%
if 0.087999999999999995 < x Initial program 99.9%
Taylor expanded in x around inf 97.8%
Taylor expanded in x around 0 97.8%
neg-mul-197.8%
+-commutative97.8%
*-commutative97.8%
sub-neg97.8%
Simplified97.8%
Final simplification98.3%
(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 0.088) 1.0 (- x)))
double code(double x, double y) {
double tmp;
if (x <= 0.088) {
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 <= 0.088d0) 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 <= 0.088) {
tmp = 1.0;
} else {
tmp = -x;
}
return tmp;
}
def code(x, y): tmp = 0 if x <= 0.088: tmp = 1.0 else: tmp = -x return tmp
function code(x, y) tmp = 0.0 if (x <= 0.088) tmp = 1.0; else tmp = Float64(-x); end return tmp end
function tmp_2 = code(x, y) tmp = 0.0; if (x <= 0.088) tmp = 1.0; else tmp = -x; end tmp_2 = tmp; end
code[x_, y_] := If[LessEqual[x, 0.088], 1.0, (-x)]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq 0.088:\\
\;\;\;\;1\\
\mathbf{else}:\\
\;\;\;\;-x\\
\end{array}
\end{array}
if x < 0.087999999999999995Initial program 99.9%
Taylor expanded in x around 0 98.8%
Taylor expanded in y around 0 63.3%
if 0.087999999999999995 < x Initial program 99.9%
Taylor expanded in x around inf 97.8%
Taylor expanded in y around 0 58.3%
neg-mul-158.3%
Simplified58.3%
Final simplification61.1%
(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 62.6%
Final simplification62.6%
(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 73.8%
Taylor expanded in y around 0 36.5%
Final simplification36.5%
herbie shell --seed 2024067
(FPCore (x y)
:name "Numeric.SpecFunctions:invIncompleteBetaWorker from math-functions-0.1.5.2, E"
:precision binary64
(+ (- 1.0 x) (* y (sqrt x))))