
(FPCore (x y) :precision binary64 (* x (/ (sin y) y)))
double code(double x, double y) {
return x * (sin(y) / y);
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = x * (sin(y) / y)
end function
public static double code(double x, double y) {
return x * (Math.sin(y) / y);
}
def code(x, y): return x * (math.sin(y) / y)
function code(x, y) return Float64(x * Float64(sin(y) / y)) end
function tmp = code(x, y) tmp = x * (sin(y) / y); end
code[x_, y_] := N[(x * N[(N[Sin[y], $MachinePrecision] / y), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x \cdot \frac{\sin y}{y}
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 6 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x y) :precision binary64 (* x (/ (sin y) y)))
double code(double x, double y) {
return x * (sin(y) / y);
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = x * (sin(y) / y)
end function
public static double code(double x, double y) {
return x * (Math.sin(y) / y);
}
def code(x, y): return x * (math.sin(y) / y)
function code(x, y) return Float64(x * Float64(sin(y) / y)) end
function tmp = code(x, y) tmp = x * (sin(y) / y); end
code[x_, y_] := N[(x * N[(N[Sin[y], $MachinePrecision] / y), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x \cdot \frac{\sin y}{y}
\end{array}
(FPCore (x y) :precision binary64 (/ x (/ y (sin y))))
double code(double x, double y) {
return x / (y / sin(y));
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = x / (y / sin(y))
end function
public static double code(double x, double y) {
return x / (y / Math.sin(y));
}
def code(x, y): return x / (y / math.sin(y))
function code(x, y) return Float64(x / Float64(y / sin(y))) end
function tmp = code(x, y) tmp = x / (y / sin(y)); end
code[x_, y_] := N[(x / N[(y / N[Sin[y], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\frac{x}{\frac{y}{\sin y}}
\end{array}
Initial program 99.8%
clear-num99.8%
un-div-inv99.8%
Applied egg-rr99.8%
Final simplification99.8%
(FPCore (x y) :precision binary64 (* x (/ (sin y) y)))
double code(double x, double y) {
return x * (sin(y) / y);
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = x * (sin(y) / y)
end function
public static double code(double x, double y) {
return x * (Math.sin(y) / y);
}
def code(x, y): return x * (math.sin(y) / y)
function code(x, y) return Float64(x * Float64(sin(y) / y)) end
function tmp = code(x, y) tmp = x * (sin(y) / y); end
code[x_, y_] := N[(x * N[(N[Sin[y], $MachinePrecision] / y), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x \cdot \frac{\sin y}{y}
\end{array}
Initial program 99.8%
Final simplification99.8%
(FPCore (x y) :precision binary64 (if (<= y 3.1) (* x (+ 1.0 (* -0.16666666666666666 (* y y)))) (* -6.0 (/ (/ x y) y))))
double code(double x, double y) {
double tmp;
if (y <= 3.1) {
tmp = x * (1.0 + (-0.16666666666666666 * (y * y)));
} else {
tmp = -6.0 * ((x / y) / y);
}
return tmp;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8) :: tmp
if (y <= 3.1d0) then
tmp = x * (1.0d0 + ((-0.16666666666666666d0) * (y * y)))
else
tmp = (-6.0d0) * ((x / y) / y)
end if
code = tmp
end function
public static double code(double x, double y) {
double tmp;
if (y <= 3.1) {
tmp = x * (1.0 + (-0.16666666666666666 * (y * y)));
} else {
tmp = -6.0 * ((x / y) / y);
}
return tmp;
}
def code(x, y): tmp = 0 if y <= 3.1: tmp = x * (1.0 + (-0.16666666666666666 * (y * y))) else: tmp = -6.0 * ((x / y) / y) return tmp
function code(x, y) tmp = 0.0 if (y <= 3.1) tmp = Float64(x * Float64(1.0 + Float64(-0.16666666666666666 * Float64(y * y)))); else tmp = Float64(-6.0 * Float64(Float64(x / y) / y)); end return tmp end
function tmp_2 = code(x, y) tmp = 0.0; if (y <= 3.1) tmp = x * (1.0 + (-0.16666666666666666 * (y * y))); else tmp = -6.0 * ((x / y) / y); end tmp_2 = tmp; end
code[x_, y_] := If[LessEqual[y, 3.1], N[(x * N[(1.0 + N[(-0.16666666666666666 * N[(y * y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(-6.0 * N[(N[(x / y), $MachinePrecision] / y), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq 3.1:\\
\;\;\;\;x \cdot \left(1 + -0.16666666666666666 \cdot \left(y \cdot y\right)\right)\\
\mathbf{else}:\\
\;\;\;\;-6 \cdot \frac{\frac{x}{y}}{y}\\
\end{array}
\end{array}
if y < 3.10000000000000009Initial program 99.9%
Taylor expanded in y around 0 69.4%
unpow269.4%
Simplified69.4%
if 3.10000000000000009 < y Initial program 99.7%
clear-num99.7%
un-div-inv99.7%
Applied egg-rr99.7%
Taylor expanded in y around 0 32.4%
*-commutative32.4%
unpow232.4%
Simplified32.4%
add-sqr-sqrt32.4%
sqrt-unprod32.4%
swap-sqr32.4%
metadata-eval32.4%
metadata-eval32.4%
swap-sqr32.4%
associate-*r*32.4%
associate-*r*32.4%
sqrt-unprod0.0%
add-sqr-sqrt32.8%
associate-*r*32.8%
*-commutative32.8%
metadata-eval32.8%
cancel-sign-sub-inv32.8%
*-commutative32.8%
associate-*l*32.8%
Applied egg-rr32.8%
associate-*r*32.8%
*-commutative32.8%
Simplified32.8%
Taylor expanded in y around inf 32.8%
unpow232.8%
associate-/r*32.9%
Simplified32.9%
Final simplification60.1%
(FPCore (x y) :precision binary64 (if (<= y 890000000.0) x (* -6.0 (/ (/ x y) y))))
double code(double x, double y) {
double tmp;
if (y <= 890000000.0) {
tmp = x;
} else {
tmp = -6.0 * ((x / y) / y);
}
return tmp;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8) :: tmp
if (y <= 890000000.0d0) then
tmp = x
else
tmp = (-6.0d0) * ((x / y) / y)
end if
code = tmp
end function
public static double code(double x, double y) {
double tmp;
if (y <= 890000000.0) {
tmp = x;
} else {
tmp = -6.0 * ((x / y) / y);
}
return tmp;
}
def code(x, y): tmp = 0 if y <= 890000000.0: tmp = x else: tmp = -6.0 * ((x / y) / y) return tmp
function code(x, y) tmp = 0.0 if (y <= 890000000.0) tmp = x; else tmp = Float64(-6.0 * Float64(Float64(x / y) / y)); end return tmp end
function tmp_2 = code(x, y) tmp = 0.0; if (y <= 890000000.0) tmp = x; else tmp = -6.0 * ((x / y) / y); end tmp_2 = tmp; end
code[x_, y_] := If[LessEqual[y, 890000000.0], x, N[(-6.0 * N[(N[(x / y), $MachinePrecision] / y), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq 890000000:\\
\;\;\;\;x\\
\mathbf{else}:\\
\;\;\;\;-6 \cdot \frac{\frac{x}{y}}{y}\\
\end{array}
\end{array}
if y < 8.9e8Initial program 99.9%
Taylor expanded in y around 0 68.9%
if 8.9e8 < y Initial program 99.7%
clear-num99.8%
un-div-inv99.8%
Applied egg-rr99.8%
Taylor expanded in y around 0 33.2%
*-commutative33.2%
unpow233.2%
Simplified33.2%
add-sqr-sqrt33.2%
sqrt-unprod33.2%
swap-sqr33.2%
metadata-eval33.2%
metadata-eval33.2%
swap-sqr33.2%
associate-*r*33.2%
associate-*r*33.2%
sqrt-unprod0.0%
add-sqr-sqrt33.6%
associate-*r*33.6%
*-commutative33.6%
metadata-eval33.6%
cancel-sign-sub-inv33.6%
*-commutative33.6%
associate-*l*33.6%
Applied egg-rr33.6%
associate-*r*33.6%
*-commutative33.6%
Simplified33.6%
Taylor expanded in y around inf 33.6%
unpow233.6%
associate-/r*33.6%
Simplified33.6%
Final simplification60.3%
(FPCore (x y) :precision binary64 (/ x (+ 1.0 (* y (* y 0.16666666666666666)))))
double code(double x, double y) {
return x / (1.0 + (y * (y * 0.16666666666666666)));
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = x / (1.0d0 + (y * (y * 0.16666666666666666d0)))
end function
public static double code(double x, double y) {
return x / (1.0 + (y * (y * 0.16666666666666666)));
}
def code(x, y): return x / (1.0 + (y * (y * 0.16666666666666666)))
function code(x, y) return Float64(x / Float64(1.0 + Float64(y * Float64(y * 0.16666666666666666)))) end
function tmp = code(x, y) tmp = x / (1.0 + (y * (y * 0.16666666666666666))); end
code[x_, y_] := N[(x / N[(1.0 + N[(y * N[(y * 0.16666666666666666), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\frac{x}{1 + y \cdot \left(y \cdot 0.16666666666666666\right)}
\end{array}
Initial program 99.8%
clear-num99.8%
un-div-inv99.8%
Applied egg-rr99.8%
Taylor expanded in y around 0 67.1%
*-commutative67.1%
unpow267.1%
Simplified67.1%
Taylor expanded in y around 0 67.1%
unpow267.1%
*-commutative67.1%
associate-*r*67.1%
*-commutative67.1%
Simplified67.1%
Final simplification67.1%
(FPCore (x y) :precision binary64 x)
double code(double x, double y) {
return x;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = x
end function
public static double code(double x, double y) {
return x;
}
def code(x, y): return x
function code(x, y) return x end
function tmp = code(x, y) tmp = x; end
code[x_, y_] := x
\begin{array}{l}
\\
x
\end{array}
Initial program 99.8%
Taylor expanded in y around 0 53.1%
Final simplification53.1%
herbie shell --seed 2023238
(FPCore (x y)
:name "Linear.Quaternion:$cexp from linear-1.19.1.3"
:precision binary64
(* x (/ (sin y) y)))