
(FPCore (x) :precision binary64 (/ (- (exp x) (exp (- x))) 2.0))
double code(double x) {
return (exp(x) - exp(-x)) / 2.0;
}
real(8) function code(x)
real(8), intent (in) :: x
code = (exp(x) - exp(-x)) / 2.0d0
end function
public static double code(double x) {
return (Math.exp(x) - Math.exp(-x)) / 2.0;
}
def code(x): return (math.exp(x) - math.exp(-x)) / 2.0
function code(x) return Float64(Float64(exp(x) - exp(Float64(-x))) / 2.0) end
function tmp = code(x) tmp = (exp(x) - exp(-x)) / 2.0; end
code[x_] := N[(N[(N[Exp[x], $MachinePrecision] - N[Exp[(-x)], $MachinePrecision]), $MachinePrecision] / 2.0), $MachinePrecision]
\begin{array}{l}
\\
\frac{e^{x} - e^{-x}}{2}
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 11 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x) :precision binary64 (/ (- (exp x) (exp (- x))) 2.0))
double code(double x) {
return (exp(x) - exp(-x)) / 2.0;
}
real(8) function code(x)
real(8), intent (in) :: x
code = (exp(x) - exp(-x)) / 2.0d0
end function
public static double code(double x) {
return (Math.exp(x) - Math.exp(-x)) / 2.0;
}
def code(x): return (math.exp(x) - math.exp(-x)) / 2.0
function code(x) return Float64(Float64(exp(x) - exp(Float64(-x))) / 2.0) end
function tmp = code(x) tmp = (exp(x) - exp(-x)) / 2.0; end
code[x_] := N[(N[(N[Exp[x], $MachinePrecision] - N[Exp[(-x)], $MachinePrecision]), $MachinePrecision] / 2.0), $MachinePrecision]
\begin{array}{l}
\\
\frac{e^{x} - e^{-x}}{2}
\end{array}
(FPCore (x)
:precision binary64
(let* ((t_0 (- (exp x) (exp (- x)))))
(if (or (<= t_0 (- INFINITY)) (not (<= t_0 1e-6)))
(/ t_0 2.0)
(/
(+
(* x 2.0)
(+
(* 0.3333333333333333 (pow x 3.0))
(* 0.016666666666666666 (pow x 5.0))))
2.0))))
double code(double x) {
double t_0 = exp(x) - exp(-x);
double tmp;
if ((t_0 <= -((double) INFINITY)) || !(t_0 <= 1e-6)) {
tmp = t_0 / 2.0;
} else {
tmp = ((x * 2.0) + ((0.3333333333333333 * pow(x, 3.0)) + (0.016666666666666666 * pow(x, 5.0)))) / 2.0;
}
return tmp;
}
public static double code(double x) {
double t_0 = Math.exp(x) - Math.exp(-x);
double tmp;
if ((t_0 <= -Double.POSITIVE_INFINITY) || !(t_0 <= 1e-6)) {
tmp = t_0 / 2.0;
} else {
tmp = ((x * 2.0) + ((0.3333333333333333 * Math.pow(x, 3.0)) + (0.016666666666666666 * Math.pow(x, 5.0)))) / 2.0;
}
return tmp;
}
def code(x): t_0 = math.exp(x) - math.exp(-x) tmp = 0 if (t_0 <= -math.inf) or not (t_0 <= 1e-6): tmp = t_0 / 2.0 else: tmp = ((x * 2.0) + ((0.3333333333333333 * math.pow(x, 3.0)) + (0.016666666666666666 * math.pow(x, 5.0)))) / 2.0 return tmp
function code(x) t_0 = Float64(exp(x) - exp(Float64(-x))) tmp = 0.0 if ((t_0 <= Float64(-Inf)) || !(t_0 <= 1e-6)) tmp = Float64(t_0 / 2.0); else tmp = Float64(Float64(Float64(x * 2.0) + Float64(Float64(0.3333333333333333 * (x ^ 3.0)) + Float64(0.016666666666666666 * (x ^ 5.0)))) / 2.0); end return tmp end
function tmp_2 = code(x) t_0 = exp(x) - exp(-x); tmp = 0.0; if ((t_0 <= -Inf) || ~((t_0 <= 1e-6))) tmp = t_0 / 2.0; else tmp = ((x * 2.0) + ((0.3333333333333333 * (x ^ 3.0)) + (0.016666666666666666 * (x ^ 5.0)))) / 2.0; end tmp_2 = tmp; end
code[x_] := Block[{t$95$0 = N[(N[Exp[x], $MachinePrecision] - N[Exp[(-x)], $MachinePrecision]), $MachinePrecision]}, If[Or[LessEqual[t$95$0, (-Infinity)], N[Not[LessEqual[t$95$0, 1e-6]], $MachinePrecision]], N[(t$95$0 / 2.0), $MachinePrecision], N[(N[(N[(x * 2.0), $MachinePrecision] + N[(N[(0.3333333333333333 * N[Power[x, 3.0], $MachinePrecision]), $MachinePrecision] + N[(0.016666666666666666 * N[Power[x, 5.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / 2.0), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := e^{x} - e^{-x}\\
\mathbf{if}\;t_0 \leq -\infty \lor \neg \left(t_0 \leq 10^{-6}\right):\\
\;\;\;\;\frac{t_0}{2}\\
\mathbf{else}:\\
\;\;\;\;\frac{x \cdot 2 + \left(0.3333333333333333 \cdot {x}^{3} + 0.016666666666666666 \cdot {x}^{5}\right)}{2}\\
\end{array}
\end{array}
if (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) < -inf.0 or 9.99999999999999955e-7 < (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) Initial program 100.0%
if -inf.0 < (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) < 9.99999999999999955e-7Initial program 9.8%
Taylor expanded in x around 0 100.0%
Final simplification100.0%
(FPCore (x)
:precision binary64
(let* ((t_0 (- (exp x) (exp (- x)))))
(if (or (<= t_0 (- INFINITY)) (not (<= t_0 1e-6)))
(/ t_0 2.0)
(/ (+ (* x 2.0) (* x (* x (* x 0.3333333333333333)))) 2.0))))
double code(double x) {
double t_0 = exp(x) - exp(-x);
double tmp;
if ((t_0 <= -((double) INFINITY)) || !(t_0 <= 1e-6)) {
tmp = t_0 / 2.0;
} else {
tmp = ((x * 2.0) + (x * (x * (x * 0.3333333333333333)))) / 2.0;
}
return tmp;
}
public static double code(double x) {
double t_0 = Math.exp(x) - Math.exp(-x);
double tmp;
if ((t_0 <= -Double.POSITIVE_INFINITY) || !(t_0 <= 1e-6)) {
tmp = t_0 / 2.0;
} else {
tmp = ((x * 2.0) + (x * (x * (x * 0.3333333333333333)))) / 2.0;
}
return tmp;
}
def code(x): t_0 = math.exp(x) - math.exp(-x) tmp = 0 if (t_0 <= -math.inf) or not (t_0 <= 1e-6): tmp = t_0 / 2.0 else: tmp = ((x * 2.0) + (x * (x * (x * 0.3333333333333333)))) / 2.0 return tmp
function code(x) t_0 = Float64(exp(x) - exp(Float64(-x))) tmp = 0.0 if ((t_0 <= Float64(-Inf)) || !(t_0 <= 1e-6)) tmp = Float64(t_0 / 2.0); else tmp = Float64(Float64(Float64(x * 2.0) + Float64(x * Float64(x * Float64(x * 0.3333333333333333)))) / 2.0); end return tmp end
function tmp_2 = code(x) t_0 = exp(x) - exp(-x); tmp = 0.0; if ((t_0 <= -Inf) || ~((t_0 <= 1e-6))) tmp = t_0 / 2.0; else tmp = ((x * 2.0) + (x * (x * (x * 0.3333333333333333)))) / 2.0; end tmp_2 = tmp; end
code[x_] := Block[{t$95$0 = N[(N[Exp[x], $MachinePrecision] - N[Exp[(-x)], $MachinePrecision]), $MachinePrecision]}, If[Or[LessEqual[t$95$0, (-Infinity)], N[Not[LessEqual[t$95$0, 1e-6]], $MachinePrecision]], N[(t$95$0 / 2.0), $MachinePrecision], N[(N[(N[(x * 2.0), $MachinePrecision] + N[(x * N[(x * N[(x * 0.3333333333333333), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / 2.0), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := e^{x} - e^{-x}\\
\mathbf{if}\;t_0 \leq -\infty \lor \neg \left(t_0 \leq 10^{-6}\right):\\
\;\;\;\;\frac{t_0}{2}\\
\mathbf{else}:\\
\;\;\;\;\frac{x \cdot 2 + x \cdot \left(x \cdot \left(x \cdot 0.3333333333333333\right)\right)}{2}\\
\end{array}
\end{array}
if (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) < -inf.0 or 9.99999999999999955e-7 < (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) Initial program 100.0%
if -inf.0 < (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) < 9.99999999999999955e-7Initial program 9.8%
Taylor expanded in x around 0 100.0%
unpow3100.0%
associate-*r*100.0%
distribute-rgt-out100.0%
*-commutative100.0%
+-commutative100.0%
associate-*l*100.0%
fma-def100.0%
Simplified100.0%
fma-udef100.0%
distribute-rgt-in100.0%
Applied egg-rr100.0%
Final simplification100.0%
(FPCore (x) :precision binary64 (/ (* x (/ (+ (pow (* x (* x 0.3333333333333333)) 3.0) 8.0) 4.0)) 2.0))
double code(double x) {
return (x * ((pow((x * (x * 0.3333333333333333)), 3.0) + 8.0) / 4.0)) / 2.0;
}
real(8) function code(x)
real(8), intent (in) :: x
code = (x * ((((x * (x * 0.3333333333333333d0)) ** 3.0d0) + 8.0d0) / 4.0d0)) / 2.0d0
end function
public static double code(double x) {
return (x * ((Math.pow((x * (x * 0.3333333333333333)), 3.0) + 8.0) / 4.0)) / 2.0;
}
def code(x): return (x * ((math.pow((x * (x * 0.3333333333333333)), 3.0) + 8.0) / 4.0)) / 2.0
function code(x) return Float64(Float64(x * Float64(Float64((Float64(x * Float64(x * 0.3333333333333333)) ^ 3.0) + 8.0) / 4.0)) / 2.0) end
function tmp = code(x) tmp = (x * ((((x * (x * 0.3333333333333333)) ^ 3.0) + 8.0) / 4.0)) / 2.0; end
code[x_] := N[(N[(x * N[(N[(N[Power[N[(x * N[(x * 0.3333333333333333), $MachinePrecision]), $MachinePrecision], 3.0], $MachinePrecision] + 8.0), $MachinePrecision] / 4.0), $MachinePrecision]), $MachinePrecision] / 2.0), $MachinePrecision]
\begin{array}{l}
\\
\frac{x \cdot \frac{{\left(x \cdot \left(x \cdot 0.3333333333333333\right)\right)}^{3} + 8}{4}}{2}
\end{array}
Initial program 52.4%
Taylor expanded in x around 0 91.1%
unpow391.1%
associate-*r*91.1%
distribute-rgt-out91.1%
*-commutative91.1%
+-commutative91.1%
associate-*l*91.1%
fma-def91.1%
Simplified91.1%
fma-udef91.1%
flip3-+54.5%
metadata-eval54.5%
metadata-eval54.5%
Applied egg-rr54.5%
Taylor expanded in x around 0 95.2%
Final simplification95.2%
(FPCore (x)
:precision binary64
(let* ((t_0 (* x (* x 0.3333333333333333))))
(if (<= x -5e+82)
(/ (+ (* x 2.0) (* 0.016666666666666666 (pow x 5.0))) 2.0)
(if (<= x 2e+77)
(/
(*
x
(/
(+ 8.0 (* x (* t_0 (* x (* (* x x) 0.1111111111111111)))))
(+ (* t_0 t_0) (- 4.0 (* 2.0 t_0)))))
2.0)
(/ x (/ 6.0 (* x x)))))))
double code(double x) {
double t_0 = x * (x * 0.3333333333333333);
double tmp;
if (x <= -5e+82) {
tmp = ((x * 2.0) + (0.016666666666666666 * pow(x, 5.0))) / 2.0;
} else if (x <= 2e+77) {
tmp = (x * ((8.0 + (x * (t_0 * (x * ((x * x) * 0.1111111111111111))))) / ((t_0 * t_0) + (4.0 - (2.0 * t_0))))) / 2.0;
} else {
tmp = x / (6.0 / (x * x));
}
return tmp;
}
real(8) function code(x)
real(8), intent (in) :: x
real(8) :: t_0
real(8) :: tmp
t_0 = x * (x * 0.3333333333333333d0)
if (x <= (-5d+82)) then
tmp = ((x * 2.0d0) + (0.016666666666666666d0 * (x ** 5.0d0))) / 2.0d0
else if (x <= 2d+77) then
tmp = (x * ((8.0d0 + (x * (t_0 * (x * ((x * x) * 0.1111111111111111d0))))) / ((t_0 * t_0) + (4.0d0 - (2.0d0 * t_0))))) / 2.0d0
else
tmp = x / (6.0d0 / (x * x))
end if
code = tmp
end function
public static double code(double x) {
double t_0 = x * (x * 0.3333333333333333);
double tmp;
if (x <= -5e+82) {
tmp = ((x * 2.0) + (0.016666666666666666 * Math.pow(x, 5.0))) / 2.0;
} else if (x <= 2e+77) {
tmp = (x * ((8.0 + (x * (t_0 * (x * ((x * x) * 0.1111111111111111))))) / ((t_0 * t_0) + (4.0 - (2.0 * t_0))))) / 2.0;
} else {
tmp = x / (6.0 / (x * x));
}
return tmp;
}
def code(x): t_0 = x * (x * 0.3333333333333333) tmp = 0 if x <= -5e+82: tmp = ((x * 2.0) + (0.016666666666666666 * math.pow(x, 5.0))) / 2.0 elif x <= 2e+77: tmp = (x * ((8.0 + (x * (t_0 * (x * ((x * x) * 0.1111111111111111))))) / ((t_0 * t_0) + (4.0 - (2.0 * t_0))))) / 2.0 else: tmp = x / (6.0 / (x * x)) return tmp
function code(x) t_0 = Float64(x * Float64(x * 0.3333333333333333)) tmp = 0.0 if (x <= -5e+82) tmp = Float64(Float64(Float64(x * 2.0) + Float64(0.016666666666666666 * (x ^ 5.0))) / 2.0); elseif (x <= 2e+77) tmp = Float64(Float64(x * Float64(Float64(8.0 + Float64(x * Float64(t_0 * Float64(x * Float64(Float64(x * x) * 0.1111111111111111))))) / Float64(Float64(t_0 * t_0) + Float64(4.0 - Float64(2.0 * t_0))))) / 2.0); else tmp = Float64(x / Float64(6.0 / Float64(x * x))); end return tmp end
function tmp_2 = code(x) t_0 = x * (x * 0.3333333333333333); tmp = 0.0; if (x <= -5e+82) tmp = ((x * 2.0) + (0.016666666666666666 * (x ^ 5.0))) / 2.0; elseif (x <= 2e+77) tmp = (x * ((8.0 + (x * (t_0 * (x * ((x * x) * 0.1111111111111111))))) / ((t_0 * t_0) + (4.0 - (2.0 * t_0))))) / 2.0; else tmp = x / (6.0 / (x * x)); end tmp_2 = tmp; end
code[x_] := Block[{t$95$0 = N[(x * N[(x * 0.3333333333333333), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[x, -5e+82], N[(N[(N[(x * 2.0), $MachinePrecision] + N[(0.016666666666666666 * N[Power[x, 5.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / 2.0), $MachinePrecision], If[LessEqual[x, 2e+77], N[(N[(x * N[(N[(8.0 + N[(x * N[(t$95$0 * N[(x * N[(N[(x * x), $MachinePrecision] * 0.1111111111111111), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / N[(N[(t$95$0 * t$95$0), $MachinePrecision] + N[(4.0 - N[(2.0 * t$95$0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / 2.0), $MachinePrecision], N[(x / N[(6.0 / N[(x * x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := x \cdot \left(x \cdot 0.3333333333333333\right)\\
\mathbf{if}\;x \leq -5 \cdot 10^{+82}:\\
\;\;\;\;\frac{x \cdot 2 + 0.016666666666666666 \cdot {x}^{5}}{2}\\
\mathbf{elif}\;x \leq 2 \cdot 10^{+77}:\\
\;\;\;\;\frac{x \cdot \frac{8 + x \cdot \left(t_0 \cdot \left(x \cdot \left(\left(x \cdot x\right) \cdot 0.1111111111111111\right)\right)\right)}{t_0 \cdot t_0 + \left(4 - 2 \cdot t_0\right)}}{2}\\
\mathbf{else}:\\
\;\;\;\;\frac{x}{\frac{6}{x \cdot x}}\\
\end{array}
\end{array}
if x < -5.00000000000000015e82Initial program 100.0%
Taylor expanded in x around 0 100.0%
Taylor expanded in x around inf 100.0%
if -5.00000000000000015e82 < x < 1.99999999999999997e77Initial program 20.9%
Taylor expanded in x around 0 88.2%
unpow388.2%
associate-*r*88.2%
distribute-rgt-out88.1%
*-commutative88.1%
+-commutative88.1%
associate-*l*88.1%
fma-def88.1%
Simplified88.1%
fma-udef88.1%
flip3-+90.6%
metadata-eval90.6%
metadata-eval90.6%
Applied egg-rr90.6%
unpow390.6%
associate-*l*90.6%
associate-*l*90.6%
associate-*l*90.6%
associate-*l*90.6%
*-commutative90.6%
swap-sqr90.6%
metadata-eval90.6%
Applied egg-rr90.6%
if 1.99999999999999997e77 < x Initial program 100.0%
Taylor expanded in x around 0 100.0%
unpow3100.0%
associate-*r*100.0%
distribute-rgt-out100.0%
*-commutative100.0%
+-commutative100.0%
associate-*l*100.0%
fma-def100.0%
Simplified100.0%
Taylor expanded in x around inf 100.0%
unpow2100.0%
Simplified100.0%
associate-/l*100.0%
div-inv100.0%
*-commutative100.0%
associate-*r*100.0%
Applied egg-rr100.0%
associate-*r/100.0%
*-rgt-identity100.0%
associate-*r*100.0%
*-commutative100.0%
associate-/r*100.0%
metadata-eval100.0%
Simplified100.0%
Final simplification94.4%
(FPCore (x)
:precision binary64
(let* ((t_0 (* x (* x 0.3333333333333333))))
(if (<= x -2e+159)
(/ x (/ 6.0 (* x x)))
(if (<= x -5e+54)
(/ (* x (/ (- (* t_0 t_0) 4.0) (- t_0 2.0))) 2.0)
(/ (+ (* x 2.0) (* x t_0)) 2.0)))))
double code(double x) {
double t_0 = x * (x * 0.3333333333333333);
double tmp;
if (x <= -2e+159) {
tmp = x / (6.0 / (x * x));
} else if (x <= -5e+54) {
tmp = (x * (((t_0 * t_0) - 4.0) / (t_0 - 2.0))) / 2.0;
} else {
tmp = ((x * 2.0) + (x * t_0)) / 2.0;
}
return tmp;
}
real(8) function code(x)
real(8), intent (in) :: x
real(8) :: t_0
real(8) :: tmp
t_0 = x * (x * 0.3333333333333333d0)
if (x <= (-2d+159)) then
tmp = x / (6.0d0 / (x * x))
else if (x <= (-5d+54)) then
tmp = (x * (((t_0 * t_0) - 4.0d0) / (t_0 - 2.0d0))) / 2.0d0
else
tmp = ((x * 2.0d0) + (x * t_0)) / 2.0d0
end if
code = tmp
end function
public static double code(double x) {
double t_0 = x * (x * 0.3333333333333333);
double tmp;
if (x <= -2e+159) {
tmp = x / (6.0 / (x * x));
} else if (x <= -5e+54) {
tmp = (x * (((t_0 * t_0) - 4.0) / (t_0 - 2.0))) / 2.0;
} else {
tmp = ((x * 2.0) + (x * t_0)) / 2.0;
}
return tmp;
}
def code(x): t_0 = x * (x * 0.3333333333333333) tmp = 0 if x <= -2e+159: tmp = x / (6.0 / (x * x)) elif x <= -5e+54: tmp = (x * (((t_0 * t_0) - 4.0) / (t_0 - 2.0))) / 2.0 else: tmp = ((x * 2.0) + (x * t_0)) / 2.0 return tmp
function code(x) t_0 = Float64(x * Float64(x * 0.3333333333333333)) tmp = 0.0 if (x <= -2e+159) tmp = Float64(x / Float64(6.0 / Float64(x * x))); elseif (x <= -5e+54) tmp = Float64(Float64(x * Float64(Float64(Float64(t_0 * t_0) - 4.0) / Float64(t_0 - 2.0))) / 2.0); else tmp = Float64(Float64(Float64(x * 2.0) + Float64(x * t_0)) / 2.0); end return tmp end
function tmp_2 = code(x) t_0 = x * (x * 0.3333333333333333); tmp = 0.0; if (x <= -2e+159) tmp = x / (6.0 / (x * x)); elseif (x <= -5e+54) tmp = (x * (((t_0 * t_0) - 4.0) / (t_0 - 2.0))) / 2.0; else tmp = ((x * 2.0) + (x * t_0)) / 2.0; end tmp_2 = tmp; end
code[x_] := Block[{t$95$0 = N[(x * N[(x * 0.3333333333333333), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[x, -2e+159], N[(x / N[(6.0 / N[(x * x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[x, -5e+54], N[(N[(x * N[(N[(N[(t$95$0 * t$95$0), $MachinePrecision] - 4.0), $MachinePrecision] / N[(t$95$0 - 2.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / 2.0), $MachinePrecision], N[(N[(N[(x * 2.0), $MachinePrecision] + N[(x * t$95$0), $MachinePrecision]), $MachinePrecision] / 2.0), $MachinePrecision]]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := x \cdot \left(x \cdot 0.3333333333333333\right)\\
\mathbf{if}\;x \leq -2 \cdot 10^{+159}:\\
\;\;\;\;\frac{x}{\frac{6}{x \cdot x}}\\
\mathbf{elif}\;x \leq -5 \cdot 10^{+54}:\\
\;\;\;\;\frac{x \cdot \frac{t_0 \cdot t_0 - 4}{t_0 - 2}}{2}\\
\mathbf{else}:\\
\;\;\;\;\frac{x \cdot 2 + x \cdot t_0}{2}\\
\end{array}
\end{array}
if x < -1.9999999999999999e159Initial program 100.0%
Taylor expanded in x around 0 100.0%
unpow3100.0%
associate-*r*100.0%
distribute-rgt-out100.0%
*-commutative100.0%
+-commutative100.0%
associate-*l*100.0%
fma-def100.0%
Simplified100.0%
Taylor expanded in x around inf 100.0%
unpow2100.0%
Simplified100.0%
associate-/l*100.0%
div-inv100.0%
*-commutative100.0%
associate-*r*100.0%
Applied egg-rr100.0%
associate-*r/100.0%
*-rgt-identity100.0%
associate-*r*100.0%
*-commutative100.0%
associate-/r*100.0%
metadata-eval100.0%
Simplified100.0%
if -1.9999999999999999e159 < x < -5.00000000000000005e54Initial program 100.0%
Taylor expanded in x around 0 68.9%
unpow368.9%
associate-*r*68.9%
distribute-rgt-out68.9%
*-commutative68.9%
+-commutative68.9%
associate-*l*68.9%
fma-def68.9%
Simplified68.9%
fma-udef68.9%
flip-+90.9%
metadata-eval90.9%
Applied egg-rr90.9%
if -5.00000000000000005e54 < x Initial program 38.5%
Taylor expanded in x around 0 91.7%
unpow391.7%
associate-*r*91.7%
distribute-rgt-out91.7%
*-commutative91.7%
+-commutative91.7%
associate-*l*91.7%
fma-def91.7%
Simplified91.7%
fma-udef91.7%
distribute-rgt-in91.7%
Applied egg-rr91.7%
Final simplification92.9%
(FPCore (x) :precision binary64 (/ (+ (* x 2.0) (* x (* x (* x 0.3333333333333333)))) 2.0))
double code(double x) {
return ((x * 2.0) + (x * (x * (x * 0.3333333333333333)))) / 2.0;
}
real(8) function code(x)
real(8), intent (in) :: x
code = ((x * 2.0d0) + (x * (x * (x * 0.3333333333333333d0)))) / 2.0d0
end function
public static double code(double x) {
return ((x * 2.0) + (x * (x * (x * 0.3333333333333333)))) / 2.0;
}
def code(x): return ((x * 2.0) + (x * (x * (x * 0.3333333333333333)))) / 2.0
function code(x) return Float64(Float64(Float64(x * 2.0) + Float64(x * Float64(x * Float64(x * 0.3333333333333333)))) / 2.0) end
function tmp = code(x) tmp = ((x * 2.0) + (x * (x * (x * 0.3333333333333333)))) / 2.0; end
code[x_] := N[(N[(N[(x * 2.0), $MachinePrecision] + N[(x * N[(x * N[(x * 0.3333333333333333), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / 2.0), $MachinePrecision]
\begin{array}{l}
\\
\frac{x \cdot 2 + x \cdot \left(x \cdot \left(x \cdot 0.3333333333333333\right)\right)}{2}
\end{array}
Initial program 52.4%
Taylor expanded in x around 0 91.1%
unpow391.1%
associate-*r*91.1%
distribute-rgt-out91.1%
*-commutative91.1%
+-commutative91.1%
associate-*l*91.1%
fma-def91.1%
Simplified91.1%
fma-udef91.1%
distribute-rgt-in91.1%
Applied egg-rr91.1%
Final simplification91.1%
(FPCore (x) :precision binary64 (if (or (<= x -2.5) (not (<= x 2.45))) (/ x (/ 6.0 (* x x))) (/ (* x 2.0) 2.0)))
double code(double x) {
double tmp;
if ((x <= -2.5) || !(x <= 2.45)) {
tmp = x / (6.0 / (x * x));
} else {
tmp = (x * 2.0) / 2.0;
}
return tmp;
}
real(8) function code(x)
real(8), intent (in) :: x
real(8) :: tmp
if ((x <= (-2.5d0)) .or. (.not. (x <= 2.45d0))) then
tmp = x / (6.0d0 / (x * x))
else
tmp = (x * 2.0d0) / 2.0d0
end if
code = tmp
end function
public static double code(double x) {
double tmp;
if ((x <= -2.5) || !(x <= 2.45)) {
tmp = x / (6.0 / (x * x));
} else {
tmp = (x * 2.0) / 2.0;
}
return tmp;
}
def code(x): tmp = 0 if (x <= -2.5) or not (x <= 2.45): tmp = x / (6.0 / (x * x)) else: tmp = (x * 2.0) / 2.0 return tmp
function code(x) tmp = 0.0 if ((x <= -2.5) || !(x <= 2.45)) tmp = Float64(x / Float64(6.0 / Float64(x * x))); else tmp = Float64(Float64(x * 2.0) / 2.0); end return tmp end
function tmp_2 = code(x) tmp = 0.0; if ((x <= -2.5) || ~((x <= 2.45))) tmp = x / (6.0 / (x * x)); else tmp = (x * 2.0) / 2.0; end tmp_2 = tmp; end
code[x_] := If[Or[LessEqual[x, -2.5], N[Not[LessEqual[x, 2.45]], $MachinePrecision]], N[(x / N[(6.0 / N[(x * x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(N[(x * 2.0), $MachinePrecision] / 2.0), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -2.5 \lor \neg \left(x \leq 2.45\right):\\
\;\;\;\;\frac{x}{\frac{6}{x \cdot x}}\\
\mathbf{else}:\\
\;\;\;\;\frac{x \cdot 2}{2}\\
\end{array}
\end{array}
if x < -2.5 or 2.4500000000000002 < x Initial program 100.0%
Taylor expanded in x around 0 81.1%
unpow381.1%
associate-*r*81.1%
distribute-rgt-out81.1%
*-commutative81.1%
+-commutative81.1%
associate-*l*81.1%
fma-def81.1%
Simplified81.1%
Taylor expanded in x around inf 81.1%
unpow281.1%
Simplified81.1%
associate-/l*81.1%
div-inv81.1%
*-commutative81.1%
associate-*r*81.1%
Applied egg-rr81.1%
associate-*r/81.1%
*-rgt-identity81.1%
associate-*r*81.1%
*-commutative81.1%
associate-/r*81.1%
metadata-eval81.1%
Simplified81.1%
if -2.5 < x < 2.4500000000000002Initial program 9.8%
Taylor expanded in x around 0 99.2%
Final simplification90.6%
(FPCore (x) :precision binary64 (/ (* x (+ 2.0 (* 0.3333333333333333 (* x x)))) 2.0))
double code(double x) {
return (x * (2.0 + (0.3333333333333333 * (x * x)))) / 2.0;
}
real(8) function code(x)
real(8), intent (in) :: x
code = (x * (2.0d0 + (0.3333333333333333d0 * (x * x)))) / 2.0d0
end function
public static double code(double x) {
return (x * (2.0 + (0.3333333333333333 * (x * x)))) / 2.0;
}
def code(x): return (x * (2.0 + (0.3333333333333333 * (x * x)))) / 2.0
function code(x) return Float64(Float64(x * Float64(2.0 + Float64(0.3333333333333333 * Float64(x * x)))) / 2.0) end
function tmp = code(x) tmp = (x * (2.0 + (0.3333333333333333 * (x * x)))) / 2.0; end
code[x_] := N[(N[(x * N[(2.0 + N[(0.3333333333333333 * N[(x * x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / 2.0), $MachinePrecision]
\begin{array}{l}
\\
\frac{x \cdot \left(2 + 0.3333333333333333 \cdot \left(x \cdot x\right)\right)}{2}
\end{array}
Initial program 52.4%
Taylor expanded in x around 0 91.1%
unpow391.1%
associate-*r*91.1%
distribute-rgt-out91.1%
*-commutative91.1%
+-commutative91.1%
associate-*l*91.1%
fma-def91.1%
Simplified91.1%
fma-udef91.1%
Applied egg-rr91.1%
Taylor expanded in x around 0 91.1%
unpow291.1%
Simplified91.1%
Final simplification91.1%
(FPCore (x) :precision binary64 (/ (* x 2.0) 2.0))
double code(double x) {
return (x * 2.0) / 2.0;
}
real(8) function code(x)
real(8), intent (in) :: x
code = (x * 2.0d0) / 2.0d0
end function
public static double code(double x) {
return (x * 2.0) / 2.0;
}
def code(x): return (x * 2.0) / 2.0
function code(x) return Float64(Float64(x * 2.0) / 2.0) end
function tmp = code(x) tmp = (x * 2.0) / 2.0; end
code[x_] := N[(N[(x * 2.0), $MachinePrecision] / 2.0), $MachinePrecision]
\begin{array}{l}
\\
\frac{x \cdot 2}{2}
\end{array}
Initial program 52.4%
Taylor expanded in x around 0 55.0%
Final simplification55.0%
(FPCore (x) :precision binary64 -1.0)
double code(double x) {
return -1.0;
}
real(8) function code(x)
real(8), intent (in) :: x
code = -1.0d0
end function
public static double code(double x) {
return -1.0;
}
def code(x): return -1.0
function code(x) return -1.0 end
function tmp = code(x) tmp = -1.0; end
code[x_] := -1.0
\begin{array}{l}
\\
-1
\end{array}
Initial program 52.4%
Applied egg-rr2.8%
Final simplification2.8%
(FPCore (x) :precision binary64 0.0)
double code(double x) {
return 0.0;
}
real(8) function code(x)
real(8), intent (in) :: x
code = 0.0d0
end function
public static double code(double x) {
return 0.0;
}
def code(x): return 0.0
function code(x) return 0.0 end
function tmp = code(x) tmp = 0.0; end
code[x_] := 0.0
\begin{array}{l}
\\
0
\end{array}
Initial program 52.4%
Applied egg-rr3.7%
Final simplification3.7%
herbie shell --seed 2023215
(FPCore (x)
:name "Hyperbolic sine"
:precision binary64
(/ (- (exp x) (exp (- x))) 2.0))