
(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 10 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 -5.0) (not (<= t_0 0.05)))
(/ t_0 2.0)
(/
(+
(* x 2.0)
(+
(* 0.3333333333333333 (pow x 3.0))
(+
(* 0.0003968253968253968 (pow x 7.0))
(* 0.016666666666666666 (pow x 5.0)))))
2.0))))
double code(double x) {
double t_0 = exp(x) - exp(-x);
double tmp;
if ((t_0 <= -5.0) || !(t_0 <= 0.05)) {
tmp = t_0 / 2.0;
} else {
tmp = ((x * 2.0) + ((0.3333333333333333 * pow(x, 3.0)) + ((0.0003968253968253968 * pow(x, 7.0)) + (0.016666666666666666 * pow(x, 5.0))))) / 2.0;
}
return tmp;
}
real(8) function code(x)
real(8), intent (in) :: x
real(8) :: t_0
real(8) :: tmp
t_0 = exp(x) - exp(-x)
if ((t_0 <= (-5.0d0)) .or. (.not. (t_0 <= 0.05d0))) then
tmp = t_0 / 2.0d0
else
tmp = ((x * 2.0d0) + ((0.3333333333333333d0 * (x ** 3.0d0)) + ((0.0003968253968253968d0 * (x ** 7.0d0)) + (0.016666666666666666d0 * (x ** 5.0d0))))) / 2.0d0
end if
code = tmp
end function
public static double code(double x) {
double t_0 = Math.exp(x) - Math.exp(-x);
double tmp;
if ((t_0 <= -5.0) || !(t_0 <= 0.05)) {
tmp = t_0 / 2.0;
} else {
tmp = ((x * 2.0) + ((0.3333333333333333 * Math.pow(x, 3.0)) + ((0.0003968253968253968 * Math.pow(x, 7.0)) + (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 <= -5.0) or not (t_0 <= 0.05): tmp = t_0 / 2.0 else: tmp = ((x * 2.0) + ((0.3333333333333333 * math.pow(x, 3.0)) + ((0.0003968253968253968 * math.pow(x, 7.0)) + (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 <= -5.0) || !(t_0 <= 0.05)) tmp = Float64(t_0 / 2.0); else tmp = Float64(Float64(Float64(x * 2.0) + Float64(Float64(0.3333333333333333 * (x ^ 3.0)) + Float64(Float64(0.0003968253968253968 * (x ^ 7.0)) + 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 <= -5.0) || ~((t_0 <= 0.05))) tmp = t_0 / 2.0; else tmp = ((x * 2.0) + ((0.3333333333333333 * (x ^ 3.0)) + ((0.0003968253968253968 * (x ^ 7.0)) + (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, -5.0], N[Not[LessEqual[t$95$0, 0.05]], $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[(N[(0.0003968253968253968 * N[Power[x, 7.0], $MachinePrecision]), $MachinePrecision] + N[(0.016666666666666666 * N[Power[x, 5.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / 2.0), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := e^{x} - e^{-x}\\
\mathbf{if}\;t_0 \leq -5 \lor \neg \left(t_0 \leq 0.05\right):\\
\;\;\;\;\frac{t_0}{2}\\
\mathbf{else}:\\
\;\;\;\;\frac{x \cdot 2 + \left(0.3333333333333333 \cdot {x}^{3} + \left(0.0003968253968253968 \cdot {x}^{7} + 0.016666666666666666 \cdot {x}^{5}\right)\right)}{2}\\
\end{array}
\end{array}
if (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) < -5 or 0.050000000000000003 < (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) Initial program 100.0%
if -5 < (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) < 0.050000000000000003Initial program 9.7%
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 -5.0) (not (<= t_0 4e-5)))
(/ 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 <= -5.0) || !(t_0 <= 4e-5)) {
tmp = t_0 / 2.0;
} else {
tmp = ((x * 2.0) + (x * (x * (x * 0.3333333333333333)))) / 2.0;
}
return tmp;
}
real(8) function code(x)
real(8), intent (in) :: x
real(8) :: t_0
real(8) :: tmp
t_0 = exp(x) - exp(-x)
if ((t_0 <= (-5.0d0)) .or. (.not. (t_0 <= 4d-5))) then
tmp = t_0 / 2.0d0
else
tmp = ((x * 2.0d0) + (x * (x * (x * 0.3333333333333333d0)))) / 2.0d0
end if
code = tmp
end function
public static double code(double x) {
double t_0 = Math.exp(x) - Math.exp(-x);
double tmp;
if ((t_0 <= -5.0) || !(t_0 <= 4e-5)) {
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 <= -5.0) or not (t_0 <= 4e-5): 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 <= -5.0) || !(t_0 <= 4e-5)) 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 <= -5.0) || ~((t_0 <= 4e-5))) 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, -5.0], N[Not[LessEqual[t$95$0, 4e-5]], $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 -5 \lor \neg \left(t_0 \leq 4 \cdot 10^{-5}\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))) < -5 or 4.00000000000000033e-5 < (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) Initial program 100.0%
if -5 < (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) < 4.00000000000000033e-5Initial program 9.0%
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%
fma-udef100.0%
distribute-rgt-in100.0%
*-commutative100.0%
Applied egg-rr100.0%
Final simplification100.0%
(FPCore (x)
:precision binary64
(let* ((t_0 (* 0.3333333333333333 (* x x))))
(if (<= x -5e+156)
(* x (/ 1.0 (/ 6.0 (* x x))))
(if (<= x 500000.0)
(/ (* x (/ (- 4.0 (pow t_0 2.0)) (- 2.0 t_0))) 2.0)
(sqrt (* (pow x 6.0) 0.027777777777777776))))))
double code(double x) {
double t_0 = 0.3333333333333333 * (x * x);
double tmp;
if (x <= -5e+156) {
tmp = x * (1.0 / (6.0 / (x * x)));
} else if (x <= 500000.0) {
tmp = (x * ((4.0 - pow(t_0, 2.0)) / (2.0 - t_0))) / 2.0;
} else {
tmp = sqrt((pow(x, 6.0) * 0.027777777777777776));
}
return tmp;
}
real(8) function code(x)
real(8), intent (in) :: x
real(8) :: t_0
real(8) :: tmp
t_0 = 0.3333333333333333d0 * (x * x)
if (x <= (-5d+156)) then
tmp = x * (1.0d0 / (6.0d0 / (x * x)))
else if (x <= 500000.0d0) then
tmp = (x * ((4.0d0 - (t_0 ** 2.0d0)) / (2.0d0 - t_0))) / 2.0d0
else
tmp = sqrt(((x ** 6.0d0) * 0.027777777777777776d0))
end if
code = tmp
end function
public static double code(double x) {
double t_0 = 0.3333333333333333 * (x * x);
double tmp;
if (x <= -5e+156) {
tmp = x * (1.0 / (6.0 / (x * x)));
} else if (x <= 500000.0) {
tmp = (x * ((4.0 - Math.pow(t_0, 2.0)) / (2.0 - t_0))) / 2.0;
} else {
tmp = Math.sqrt((Math.pow(x, 6.0) * 0.027777777777777776));
}
return tmp;
}
def code(x): t_0 = 0.3333333333333333 * (x * x) tmp = 0 if x <= -5e+156: tmp = x * (1.0 / (6.0 / (x * x))) elif x <= 500000.0: tmp = (x * ((4.0 - math.pow(t_0, 2.0)) / (2.0 - t_0))) / 2.0 else: tmp = math.sqrt((math.pow(x, 6.0) * 0.027777777777777776)) return tmp
function code(x) t_0 = Float64(0.3333333333333333 * Float64(x * x)) tmp = 0.0 if (x <= -5e+156) tmp = Float64(x * Float64(1.0 / Float64(6.0 / Float64(x * x)))); elseif (x <= 500000.0) tmp = Float64(Float64(x * Float64(Float64(4.0 - (t_0 ^ 2.0)) / Float64(2.0 - t_0))) / 2.0); else tmp = sqrt(Float64((x ^ 6.0) * 0.027777777777777776)); end return tmp end
function tmp_2 = code(x) t_0 = 0.3333333333333333 * (x * x); tmp = 0.0; if (x <= -5e+156) tmp = x * (1.0 / (6.0 / (x * x))); elseif (x <= 500000.0) tmp = (x * ((4.0 - (t_0 ^ 2.0)) / (2.0 - t_0))) / 2.0; else tmp = sqrt(((x ^ 6.0) * 0.027777777777777776)); end tmp_2 = tmp; end
code[x_] := Block[{t$95$0 = N[(0.3333333333333333 * N[(x * x), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[x, -5e+156], N[(x * N[(1.0 / N[(6.0 / N[(x * x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[x, 500000.0], N[(N[(x * N[(N[(4.0 - N[Power[t$95$0, 2.0], $MachinePrecision]), $MachinePrecision] / N[(2.0 - t$95$0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / 2.0), $MachinePrecision], N[Sqrt[N[(N[Power[x, 6.0], $MachinePrecision] * 0.027777777777777776), $MachinePrecision]], $MachinePrecision]]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := 0.3333333333333333 \cdot \left(x \cdot x\right)\\
\mathbf{if}\;x \leq -5 \cdot 10^{+156}:\\
\;\;\;\;x \cdot \frac{1}{\frac{6}{x \cdot x}}\\
\mathbf{elif}\;x \leq 500000:\\
\;\;\;\;\frac{x \cdot \frac{4 - {t_0}^{2}}{2 - t_0}}{2}\\
\mathbf{else}:\\
\;\;\;\;\sqrt{{x}^{6} \cdot 0.027777777777777776}\\
\end{array}
\end{array}
if x < -4.99999999999999992e156Initial 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%
associate-/r*100.0%
metadata-eval100.0%
Applied egg-rr100.0%
if -4.99999999999999992e156 < x < 5e5Initial program 24.7%
Taylor expanded in x around 0 89.0%
unpow389.0%
associate-*r*89.0%
distribute-rgt-out88.9%
*-commutative88.9%
+-commutative88.9%
associate-*l*88.9%
fma-def88.9%
Simplified88.9%
fma-udef88.9%
*-commutative88.9%
Applied egg-rr88.9%
+-commutative88.9%
flip-+91.7%
metadata-eval91.7%
pow291.7%
*-commutative91.7%
associate-*l*91.7%
*-commutative91.7%
associate-*l*91.7%
Applied egg-rr91.7%
if 5e5 < x Initial program 100.0%
Taylor expanded in x around 0 68.7%
unpow368.7%
associate-*r*68.7%
distribute-rgt-out68.7%
*-commutative68.7%
+-commutative68.7%
associate-*l*68.7%
fma-def68.7%
Simplified68.7%
Taylor expanded in x around inf 68.7%
unpow268.7%
Simplified68.7%
*-commutative68.7%
associate-*r*68.7%
unpow368.7%
add-sqr-sqrt68.7%
sqrt-unprod90.6%
div-inv90.6%
metadata-eval90.6%
div-inv90.6%
metadata-eval90.6%
swap-sqr90.6%
swap-sqr90.6%
metadata-eval90.6%
pow-prod-up90.6%
metadata-eval90.6%
metadata-eval90.6%
Applied egg-rr90.6%
*-commutative90.6%
associate-*l*90.6%
metadata-eval90.6%
Simplified90.6%
Final simplification92.1%
(FPCore (x)
:precision binary64
(let* ((t_0 (* 0.3333333333333333 (* x x))))
(if (or (<= x -5e+156) (not (<= x 1e+101)))
(* x (/ 1.0 (/ 6.0 (* x x))))
(/ (* x (/ (- 4.0 (pow t_0 2.0)) (- 2.0 t_0))) 2.0))))
double code(double x) {
double t_0 = 0.3333333333333333 * (x * x);
double tmp;
if ((x <= -5e+156) || !(x <= 1e+101)) {
tmp = x * (1.0 / (6.0 / (x * x)));
} else {
tmp = (x * ((4.0 - pow(t_0, 2.0)) / (2.0 - 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 = 0.3333333333333333d0 * (x * x)
if ((x <= (-5d+156)) .or. (.not. (x <= 1d+101))) then
tmp = x * (1.0d0 / (6.0d0 / (x * x)))
else
tmp = (x * ((4.0d0 - (t_0 ** 2.0d0)) / (2.0d0 - t_0))) / 2.0d0
end if
code = tmp
end function
public static double code(double x) {
double t_0 = 0.3333333333333333 * (x * x);
double tmp;
if ((x <= -5e+156) || !(x <= 1e+101)) {
tmp = x * (1.0 / (6.0 / (x * x)));
} else {
tmp = (x * ((4.0 - Math.pow(t_0, 2.0)) / (2.0 - t_0))) / 2.0;
}
return tmp;
}
def code(x): t_0 = 0.3333333333333333 * (x * x) tmp = 0 if (x <= -5e+156) or not (x <= 1e+101): tmp = x * (1.0 / (6.0 / (x * x))) else: tmp = (x * ((4.0 - math.pow(t_0, 2.0)) / (2.0 - t_0))) / 2.0 return tmp
function code(x) t_0 = Float64(0.3333333333333333 * Float64(x * x)) tmp = 0.0 if ((x <= -5e+156) || !(x <= 1e+101)) tmp = Float64(x * Float64(1.0 / Float64(6.0 / Float64(x * x)))); else tmp = Float64(Float64(x * Float64(Float64(4.0 - (t_0 ^ 2.0)) / Float64(2.0 - t_0))) / 2.0); end return tmp end
function tmp_2 = code(x) t_0 = 0.3333333333333333 * (x * x); tmp = 0.0; if ((x <= -5e+156) || ~((x <= 1e+101))) tmp = x * (1.0 / (6.0 / (x * x))); else tmp = (x * ((4.0 - (t_0 ^ 2.0)) / (2.0 - t_0))) / 2.0; end tmp_2 = tmp; end
code[x_] := Block[{t$95$0 = N[(0.3333333333333333 * N[(x * x), $MachinePrecision]), $MachinePrecision]}, If[Or[LessEqual[x, -5e+156], N[Not[LessEqual[x, 1e+101]], $MachinePrecision]], N[(x * N[(1.0 / N[(6.0 / N[(x * x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(N[(x * N[(N[(4.0 - N[Power[t$95$0, 2.0], $MachinePrecision]), $MachinePrecision] / N[(2.0 - t$95$0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / 2.0), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := 0.3333333333333333 \cdot \left(x \cdot x\right)\\
\mathbf{if}\;x \leq -5 \cdot 10^{+156} \lor \neg \left(x \leq 10^{+101}\right):\\
\;\;\;\;x \cdot \frac{1}{\frac{6}{x \cdot x}}\\
\mathbf{else}:\\
\;\;\;\;\frac{x \cdot \frac{4 - {t_0}^{2}}{2 - t_0}}{2}\\
\end{array}
\end{array}
if x < -4.99999999999999992e156 or 9.9999999999999998e100 < 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%
associate-/r*100.0%
metadata-eval100.0%
Applied egg-rr100.0%
if -4.99999999999999992e156 < x < 9.9999999999999998e100Initial program 34.4%
Taylor expanded in x around 0 78.3%
unpow378.3%
associate-*r*78.3%
distribute-rgt-out78.2%
*-commutative78.2%
+-commutative78.2%
associate-*l*78.2%
fma-def78.2%
Simplified78.2%
fma-udef78.2%
*-commutative78.2%
Applied egg-rr78.2%
+-commutative78.2%
flip-+85.6%
metadata-eval85.6%
pow285.6%
*-commutative85.6%
associate-*l*85.6%
*-commutative85.6%
associate-*l*85.6%
Applied egg-rr85.6%
Final simplification89.6%
(FPCore (x) :precision binary64 (if (or (<= x -2.4) (not (<= x 2.4))) (* x (/ 1.0 (/ 6.0 (* x x)))) (/ (* x 2.0) 2.0)))
double code(double x) {
double tmp;
if ((x <= -2.4) || !(x <= 2.4)) {
tmp = x * (1.0 / (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 <= (-2.4d0)) .or. (.not. (x <= 2.4d0))) then
tmp = x * (1.0d0 / (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 <= -2.4) || !(x <= 2.4)) {
tmp = x * (1.0 / (6.0 / (x * x)));
} else {
tmp = (x * 2.0) / 2.0;
}
return tmp;
}
def code(x): tmp = 0 if (x <= -2.4) or not (x <= 2.4): tmp = x * (1.0 / (6.0 / (x * x))) else: tmp = (x * 2.0) / 2.0 return tmp
function code(x) tmp = 0.0 if ((x <= -2.4) || !(x <= 2.4)) tmp = Float64(x * Float64(1.0 / 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 <= -2.4) || ~((x <= 2.4))) tmp = x * (1.0 / (6.0 / (x * x))); else tmp = (x * 2.0) / 2.0; end tmp_2 = tmp; end
code[x_] := If[Or[LessEqual[x, -2.4], N[Not[LessEqual[x, 2.4]], $MachinePrecision]], N[(x * N[(1.0 / N[(6.0 / N[(x * x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(N[(x * 2.0), $MachinePrecision] / 2.0), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -2.4 \lor \neg \left(x \leq 2.4\right):\\
\;\;\;\;x \cdot \frac{1}{\frac{6}{x \cdot x}}\\
\mathbf{else}:\\
\;\;\;\;\frac{x \cdot 2}{2}\\
\end{array}
\end{array}
if x < -2.39999999999999991 or 2.39999999999999991 < x Initial program 100.0%
Taylor expanded in x around 0 67.5%
unpow367.5%
associate-*r*67.5%
distribute-rgt-out67.5%
*-commutative67.5%
+-commutative67.5%
associate-*l*67.5%
fma-def67.5%
Simplified67.5%
Taylor expanded in x around inf 67.5%
unpow267.5%
Simplified67.5%
associate-/l*67.5%
div-inv67.5%
associate-/r*67.5%
metadata-eval67.5%
Applied egg-rr67.5%
if -2.39999999999999991 < x < 2.39999999999999991Initial program 11.0%
Taylor expanded in x around 0 97.7%
Final simplification83.7%
(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 84.2%
unpow384.2%
associate-*r*84.2%
distribute-rgt-out84.2%
*-commutative84.2%
+-commutative84.2%
associate-*l*84.2%
fma-def84.2%
Simplified84.2%
fma-udef84.2%
distribute-rgt-in84.2%
*-commutative84.2%
Applied egg-rr84.2%
Final simplification84.2%
(FPCore (x) :precision binary64 (/ (* x (+ 2.0 (* x (* x 0.3333333333333333)))) 2.0))
double code(double x) {
return (x * (2.0 + (x * (x * 0.3333333333333333)))) / 2.0;
}
real(8) function code(x)
real(8), intent (in) :: x
code = (x * (2.0d0 + (x * (x * 0.3333333333333333d0)))) / 2.0d0
end function
public static double code(double x) {
return (x * (2.0 + (x * (x * 0.3333333333333333)))) / 2.0;
}
def code(x): return (x * (2.0 + (x * (x * 0.3333333333333333)))) / 2.0
function code(x) return Float64(Float64(x * Float64(2.0 + Float64(x * Float64(x * 0.3333333333333333)))) / 2.0) end
function tmp = code(x) tmp = (x * (2.0 + (x * (x * 0.3333333333333333)))) / 2.0; end
code[x_] := N[(N[(x * N[(2.0 + N[(x * N[(x * 0.3333333333333333), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / 2.0), $MachinePrecision]
\begin{array}{l}
\\
\frac{x \cdot \left(2 + x \cdot \left(x \cdot 0.3333333333333333\right)\right)}{2}
\end{array}
Initial program 52.4%
Taylor expanded in x around 0 84.2%
unpow384.2%
associate-*r*84.2%
distribute-rgt-out84.2%
*-commutative84.2%
+-commutative84.2%
associate-*l*84.2%
fma-def84.2%
Simplified84.2%
fma-udef84.2%
*-commutative84.2%
Applied egg-rr84.2%
Final simplification84.2%
(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 54.8%
Final simplification54.8%
(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-rr2.7%
Final simplification2.7%
(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-rr3.5%
Final simplification3.5%
herbie shell --seed 2023240
(FPCore (x)
:name "Hyperbolic sine"
:precision binary64
(/ (- (exp x) (exp (- x))) 2.0))