
(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 (- INFINITY)) (not (<= t_0 2e-5)))
(/ t_0 2.0)
(/
(+
(* 0.016666666666666666 (pow x 5.0))
(+ (* 0.3333333333333333 (pow x 3.0)) (* x 2.0)))
2.0))))
double code(double x) {
double t_0 = exp(x) - exp(-x);
double tmp;
if ((t_0 <= -((double) INFINITY)) || !(t_0 <= 2e-5)) {
tmp = t_0 / 2.0;
} else {
tmp = ((0.016666666666666666 * pow(x, 5.0)) + ((0.3333333333333333 * pow(x, 3.0)) + (x * 2.0))) / 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 <= 2e-5)) {
tmp = t_0 / 2.0;
} else {
tmp = ((0.016666666666666666 * Math.pow(x, 5.0)) + ((0.3333333333333333 * Math.pow(x, 3.0)) + (x * 2.0))) / 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 <= 2e-5): tmp = t_0 / 2.0 else: tmp = ((0.016666666666666666 * math.pow(x, 5.0)) + ((0.3333333333333333 * math.pow(x, 3.0)) + (x * 2.0))) / 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 <= 2e-5)) tmp = Float64(t_0 / 2.0); else tmp = Float64(Float64(Float64(0.016666666666666666 * (x ^ 5.0)) + Float64(Float64(0.3333333333333333 * (x ^ 3.0)) + Float64(x * 2.0))) / 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 <= 2e-5))) tmp = t_0 / 2.0; else tmp = ((0.016666666666666666 * (x ^ 5.0)) + ((0.3333333333333333 * (x ^ 3.0)) + (x * 2.0))) / 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, 2e-5]], $MachinePrecision]], N[(t$95$0 / 2.0), $MachinePrecision], N[(N[(N[(0.016666666666666666 * N[Power[x, 5.0], $MachinePrecision]), $MachinePrecision] + N[(N[(0.3333333333333333 * N[Power[x, 3.0], $MachinePrecision]), $MachinePrecision] + N[(x * 2.0), $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 2 \cdot 10^{-5}\right):\\
\;\;\;\;\frac{t_0}{2}\\
\mathbf{else}:\\
\;\;\;\;\frac{0.016666666666666666 \cdot {x}^{5} + \left(0.3333333333333333 \cdot {x}^{3} + x \cdot 2\right)}{2}\\
\end{array}
\end{array}
if (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) < -inf.0 or 2.00000000000000016e-5 < (-.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))) < 2.00000000000000016e-5Initial program 7.9%
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 -0.01) (not (<= t_0 2e-5)))
(/ t_0 2.0)
(/ (+ (* x (* 0.3333333333333333 (* x x))) (+ x x)) 2.0))))
double code(double x) {
double t_0 = exp(x) - exp(-x);
double tmp;
if ((t_0 <= -0.01) || !(t_0 <= 2e-5)) {
tmp = t_0 / 2.0;
} else {
tmp = ((x * (0.3333333333333333 * (x * x))) + (x + x)) / 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 <= (-0.01d0)) .or. (.not. (t_0 <= 2d-5))) then
tmp = t_0 / 2.0d0
else
tmp = ((x * (0.3333333333333333d0 * (x * x))) + (x + x)) / 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 <= -0.01) || !(t_0 <= 2e-5)) {
tmp = t_0 / 2.0;
} else {
tmp = ((x * (0.3333333333333333 * (x * x))) + (x + x)) / 2.0;
}
return tmp;
}
def code(x): t_0 = math.exp(x) - math.exp(-x) tmp = 0 if (t_0 <= -0.01) or not (t_0 <= 2e-5): tmp = t_0 / 2.0 else: tmp = ((x * (0.3333333333333333 * (x * x))) + (x + x)) / 2.0 return tmp
function code(x) t_0 = Float64(exp(x) - exp(Float64(-x))) tmp = 0.0 if ((t_0 <= -0.01) || !(t_0 <= 2e-5)) tmp = Float64(t_0 / 2.0); else tmp = Float64(Float64(Float64(x * Float64(0.3333333333333333 * Float64(x * x))) + Float64(x + x)) / 2.0); end return tmp end
function tmp_2 = code(x) t_0 = exp(x) - exp(-x); tmp = 0.0; if ((t_0 <= -0.01) || ~((t_0 <= 2e-5))) tmp = t_0 / 2.0; else tmp = ((x * (0.3333333333333333 * (x * x))) + (x + x)) / 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, -0.01], N[Not[LessEqual[t$95$0, 2e-5]], $MachinePrecision]], N[(t$95$0 / 2.0), $MachinePrecision], N[(N[(N[(x * N[(0.3333333333333333 * N[(x * x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(x + x), $MachinePrecision]), $MachinePrecision] / 2.0), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := e^{x} - e^{-x}\\
\mathbf{if}\;t_0 \leq -0.01 \lor \neg \left(t_0 \leq 2 \cdot 10^{-5}\right):\\
\;\;\;\;\frac{t_0}{2}\\
\mathbf{else}:\\
\;\;\;\;\frac{x \cdot \left(0.3333333333333333 \cdot \left(x \cdot x\right)\right) + \left(x + x\right)}{2}\\
\end{array}
\end{array}
if (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) < -0.0100000000000000002 or 2.00000000000000016e-5 < (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) Initial program 100.0%
if -0.0100000000000000002 < (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) < 2.00000000000000016e-5Initial program 7.2%
Taylor expanded in x around 0 100.0%
unpow3100.0%
associate-*r*100.0%
distribute-rgt-out100.0%
*-commutative100.0%
associate-*l*100.0%
fma-def100.0%
Simplified100.0%
fma-udef100.0%
distribute-rgt-in100.0%
associate-*r*100.0%
add-log-exp7.9%
*-commutative7.9%
exp-lft-sqr7.8%
log-prod7.8%
add-log-exp20.1%
add-log-exp100.0%
Applied egg-rr100.0%
Final simplification100.0%
(FPCore (x)
:precision binary64
(if (<= x -5.0)
(/ (* 0.016666666666666666 (pow x 5.0)) 2.0)
(if (<= x 2e+15)
(/ (+ (* x (* 0.3333333333333333 (* x x))) (+ x x)) 2.0)
(sqrt (* (pow x 6.0) 0.027777777777777776)))))
double code(double x) {
double tmp;
if (x <= -5.0) {
tmp = (0.016666666666666666 * pow(x, 5.0)) / 2.0;
} else if (x <= 2e+15) {
tmp = ((x * (0.3333333333333333 * (x * x))) + (x + x)) / 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) :: tmp
if (x <= (-5.0d0)) then
tmp = (0.016666666666666666d0 * (x ** 5.0d0)) / 2.0d0
else if (x <= 2d+15) then
tmp = ((x * (0.3333333333333333d0 * (x * x))) + (x + x)) / 2.0d0
else
tmp = sqrt(((x ** 6.0d0) * 0.027777777777777776d0))
end if
code = tmp
end function
public static double code(double x) {
double tmp;
if (x <= -5.0) {
tmp = (0.016666666666666666 * Math.pow(x, 5.0)) / 2.0;
} else if (x <= 2e+15) {
tmp = ((x * (0.3333333333333333 * (x * x))) + (x + x)) / 2.0;
} else {
tmp = Math.sqrt((Math.pow(x, 6.0) * 0.027777777777777776));
}
return tmp;
}
def code(x): tmp = 0 if x <= -5.0: tmp = (0.016666666666666666 * math.pow(x, 5.0)) / 2.0 elif x <= 2e+15: tmp = ((x * (0.3333333333333333 * (x * x))) + (x + x)) / 2.0 else: tmp = math.sqrt((math.pow(x, 6.0) * 0.027777777777777776)) return tmp
function code(x) tmp = 0.0 if (x <= -5.0) tmp = Float64(Float64(0.016666666666666666 * (x ^ 5.0)) / 2.0); elseif (x <= 2e+15) tmp = Float64(Float64(Float64(x * Float64(0.3333333333333333 * Float64(x * x))) + Float64(x + x)) / 2.0); else tmp = sqrt(Float64((x ^ 6.0) * 0.027777777777777776)); end return tmp end
function tmp_2 = code(x) tmp = 0.0; if (x <= -5.0) tmp = (0.016666666666666666 * (x ^ 5.0)) / 2.0; elseif (x <= 2e+15) tmp = ((x * (0.3333333333333333 * (x * x))) + (x + x)) / 2.0; else tmp = sqrt(((x ^ 6.0) * 0.027777777777777776)); end tmp_2 = tmp; end
code[x_] := If[LessEqual[x, -5.0], N[(N[(0.016666666666666666 * N[Power[x, 5.0], $MachinePrecision]), $MachinePrecision] / 2.0), $MachinePrecision], If[LessEqual[x, 2e+15], N[(N[(N[(x * N[(0.3333333333333333 * N[(x * x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(x + x), $MachinePrecision]), $MachinePrecision] / 2.0), $MachinePrecision], N[Sqrt[N[(N[Power[x, 6.0], $MachinePrecision] * 0.027777777777777776), $MachinePrecision]], $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -5:\\
\;\;\;\;\frac{0.016666666666666666 \cdot {x}^{5}}{2}\\
\mathbf{elif}\;x \leq 2 \cdot 10^{+15}:\\
\;\;\;\;\frac{x \cdot \left(0.3333333333333333 \cdot \left(x \cdot x\right)\right) + \left(x + x\right)}{2}\\
\mathbf{else}:\\
\;\;\;\;\sqrt{{x}^{6} \cdot 0.027777777777777776}\\
\end{array}
\end{array}
if x < -5Initial program 100.0%
Taylor expanded in x around 0 85.8%
Taylor expanded in x around inf 85.8%
if -5 < x < 2e15Initial program 10.8%
Taylor expanded in x around 0 97.0%
unpow397.0%
associate-*r*97.0%
distribute-rgt-out97.0%
*-commutative97.0%
associate-*l*97.0%
fma-def97.0%
Simplified97.0%
fma-udef97.0%
distribute-rgt-in97.0%
associate-*r*97.0%
add-log-exp10.7%
*-commutative10.7%
exp-lft-sqr10.6%
log-prod10.6%
add-log-exp22.4%
add-log-exp97.0%
Applied egg-rr97.0%
if 2e15 < x Initial program 100.0%
Taylor expanded in x around 0 71.3%
unpow371.3%
associate-*r*71.3%
distribute-rgt-out71.3%
*-commutative71.3%
associate-*l*71.3%
fma-def71.3%
Simplified71.3%
Taylor expanded in x around inf 71.3%
unpow271.3%
*-commutative71.3%
associate-*l*71.3%
Simplified71.3%
associate-/l*71.3%
div-inv71.3%
associate-*r*71.3%
*-commutative71.3%
associate-/r*71.3%
metadata-eval71.3%
Applied egg-rr71.3%
clear-num71.3%
div-inv71.3%
metadata-eval71.3%
associate-*l*71.3%
cube-mult71.3%
add-sqr-sqrt71.3%
sqrt-unprod91.3%
*-commutative91.3%
*-commutative91.3%
swap-sqr91.3%
metadata-eval91.3%
pow-prod-up91.3%
metadata-eval91.3%
Applied egg-rr91.3%
*-commutative91.3%
Simplified91.3%
Final simplification92.9%
(FPCore (x) :precision binary64 (if (or (<= x -5.0) (not (<= x 5.0))) (/ (* 0.016666666666666666 (pow x 5.0)) 2.0) (/ (+ (* x (* 0.3333333333333333 (* x x))) (+ x x)) 2.0)))
double code(double x) {
double tmp;
if ((x <= -5.0) || !(x <= 5.0)) {
tmp = (0.016666666666666666 * pow(x, 5.0)) / 2.0;
} else {
tmp = ((x * (0.3333333333333333 * (x * x))) + (x + x)) / 2.0;
}
return tmp;
}
real(8) function code(x)
real(8), intent (in) :: x
real(8) :: tmp
if ((x <= (-5.0d0)) .or. (.not. (x <= 5.0d0))) then
tmp = (0.016666666666666666d0 * (x ** 5.0d0)) / 2.0d0
else
tmp = ((x * (0.3333333333333333d0 * (x * x))) + (x + x)) / 2.0d0
end if
code = tmp
end function
public static double code(double x) {
double tmp;
if ((x <= -5.0) || !(x <= 5.0)) {
tmp = (0.016666666666666666 * Math.pow(x, 5.0)) / 2.0;
} else {
tmp = ((x * (0.3333333333333333 * (x * x))) + (x + x)) / 2.0;
}
return tmp;
}
def code(x): tmp = 0 if (x <= -5.0) or not (x <= 5.0): tmp = (0.016666666666666666 * math.pow(x, 5.0)) / 2.0 else: tmp = ((x * (0.3333333333333333 * (x * x))) + (x + x)) / 2.0 return tmp
function code(x) tmp = 0.0 if ((x <= -5.0) || !(x <= 5.0)) tmp = Float64(Float64(0.016666666666666666 * (x ^ 5.0)) / 2.0); else tmp = Float64(Float64(Float64(x * Float64(0.3333333333333333 * Float64(x * x))) + Float64(x + x)) / 2.0); end return tmp end
function tmp_2 = code(x) tmp = 0.0; if ((x <= -5.0) || ~((x <= 5.0))) tmp = (0.016666666666666666 * (x ^ 5.0)) / 2.0; else tmp = ((x * (0.3333333333333333 * (x * x))) + (x + x)) / 2.0; end tmp_2 = tmp; end
code[x_] := If[Or[LessEqual[x, -5.0], N[Not[LessEqual[x, 5.0]], $MachinePrecision]], N[(N[(0.016666666666666666 * N[Power[x, 5.0], $MachinePrecision]), $MachinePrecision] / 2.0), $MachinePrecision], N[(N[(N[(x * N[(0.3333333333333333 * N[(x * x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(x + x), $MachinePrecision]), $MachinePrecision] / 2.0), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -5 \lor \neg \left(x \leq 5\right):\\
\;\;\;\;\frac{0.016666666666666666 \cdot {x}^{5}}{2}\\
\mathbf{else}:\\
\;\;\;\;\frac{x \cdot \left(0.3333333333333333 \cdot \left(x \cdot x\right)\right) + \left(x + x\right)}{2}\\
\end{array}
\end{array}
if x < -5 or 5 < x Initial program 100.0%
Taylor expanded in x around 0 81.1%
Taylor expanded in x around inf 81.1%
if -5 < x < 5Initial program 8.7%
Taylor expanded in x around 0 99.2%
unpow399.2%
associate-*r*99.2%
distribute-rgt-out99.2%
*-commutative99.2%
associate-*l*99.2%
fma-def99.2%
Simplified99.2%
fma-udef99.2%
distribute-rgt-in99.2%
associate-*r*99.2%
add-log-exp8.6%
*-commutative8.6%
exp-lft-sqr8.5%
log-prod8.5%
add-log-exp20.5%
add-log-exp99.2%
Applied egg-rr99.2%
Final simplification90.1%
(FPCore (x) :precision binary64 (/ (+ (* x (* 0.3333333333333333 (* x x))) (+ x x)) 2.0))
double code(double x) {
return ((x * (0.3333333333333333 * (x * x))) + (x + x)) / 2.0;
}
real(8) function code(x)
real(8), intent (in) :: x
code = ((x * (0.3333333333333333d0 * (x * x))) + (x + x)) / 2.0d0
end function
public static double code(double x) {
return ((x * (0.3333333333333333 * (x * x))) + (x + x)) / 2.0;
}
def code(x): return ((x * (0.3333333333333333 * (x * x))) + (x + x)) / 2.0
function code(x) return Float64(Float64(Float64(x * Float64(0.3333333333333333 * Float64(x * x))) + Float64(x + x)) / 2.0) end
function tmp = code(x) tmp = ((x * (0.3333333333333333 * (x * x))) + (x + x)) / 2.0; end
code[x_] := N[(N[(N[(x * N[(0.3333333333333333 * N[(x * x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(x + x), $MachinePrecision]), $MachinePrecision] / 2.0), $MachinePrecision]
\begin{array}{l}
\\
\frac{x \cdot \left(0.3333333333333333 \cdot \left(x \cdot x\right)\right) + \left(x + x\right)}{2}
\end{array}
Initial program 54.7%
Taylor expanded in x around 0 84.1%
unpow384.1%
associate-*r*84.1%
distribute-rgt-out84.1%
*-commutative84.1%
associate-*l*84.1%
fma-def84.1%
Simplified84.1%
fma-udef84.1%
distribute-rgt-in84.1%
associate-*r*84.1%
add-log-exp54.7%
*-commutative54.7%
exp-lft-sqr54.6%
log-prod54.6%
add-log-exp60.6%
add-log-exp84.1%
Applied egg-rr84.1%
Final simplification84.1%
(FPCore (x) :precision binary64 (if (or (<= x -2.4) (not (<= x 2.45))) (* x (* (* x x) 0.16666666666666666)) (/ (* x 2.0) 2.0)))
double code(double x) {
double tmp;
if ((x <= -2.4) || !(x <= 2.45)) {
tmp = x * ((x * x) * 0.16666666666666666);
} 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 <= 2.45d0))) then
tmp = x * ((x * x) * 0.16666666666666666d0)
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 <= 2.45)) {
tmp = x * ((x * x) * 0.16666666666666666);
} else {
tmp = (x * 2.0) / 2.0;
}
return tmp;
}
def code(x): tmp = 0 if (x <= -2.4) or not (x <= 2.45): tmp = x * ((x * x) * 0.16666666666666666) else: tmp = (x * 2.0) / 2.0 return tmp
function code(x) tmp = 0.0 if ((x <= -2.4) || !(x <= 2.45)) tmp = Float64(x * Float64(Float64(x * x) * 0.16666666666666666)); 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 <= 2.45))) tmp = x * ((x * x) * 0.16666666666666666); else tmp = (x * 2.0) / 2.0; end tmp_2 = tmp; end
code[x_] := If[Or[LessEqual[x, -2.4], N[Not[LessEqual[x, 2.45]], $MachinePrecision]], N[(x * N[(N[(x * x), $MachinePrecision] * 0.16666666666666666), $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 2.45\right):\\
\;\;\;\;x \cdot \left(\left(x \cdot x\right) \cdot 0.16666666666666666\right)\\
\mathbf{else}:\\
\;\;\;\;\frac{x \cdot 2}{2}\\
\end{array}
\end{array}
if x < -2.39999999999999991 or 2.4500000000000002 < x Initial program 100.0%
Taylor expanded in x around 0 69.2%
unpow369.2%
associate-*r*69.2%
distribute-rgt-out69.2%
*-commutative69.2%
associate-*l*69.2%
fma-def69.2%
Simplified69.2%
Taylor expanded in x around inf 69.2%
unpow269.2%
*-commutative69.2%
associate-*l*69.2%
Simplified69.2%
associate-/l*69.2%
div-inv69.2%
associate-*r*69.2%
*-commutative69.2%
associate-/r*69.2%
metadata-eval69.2%
Applied egg-rr69.2%
clear-num69.2%
div-inv69.2%
metadata-eval69.2%
Applied egg-rr69.2%
if -2.39999999999999991 < x < 2.4500000000000002Initial program 8.7%
Taylor expanded in x around 0 98.8%
Final simplification83.8%
(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 54.7%
Taylor expanded in x around 0 84.1%
unpow384.1%
associate-*r*84.1%
distribute-rgt-out84.1%
*-commutative84.1%
associate-*l*84.1%
fma-def84.1%
Simplified84.1%
fma-udef84.1%
associate-*r*84.1%
Applied egg-rr84.1%
Final simplification84.1%
(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 54.7%
Taylor expanded in x around 0 51.6%
Final simplification51.6%
(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 54.7%
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 54.7%
Applied egg-rr3.4%
Final simplification3.4%
herbie shell --seed 2023293
(FPCore (x)
:name "Hyperbolic sine"
:precision binary64
(/ (- (exp x) (exp (- x))) 2.0))