
(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 -100.0) (not (<= t_0 0.05)))
(/ 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 <= -100.0) || !(t_0 <= 0.05)) {
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;
}
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 <= (-100.0d0)) .or. (.not. (t_0 <= 0.05d0))) then
tmp = t_0 / 2.0d0
else
tmp = ((x * 2.0d0) + ((0.3333333333333333d0 * (x ** 3.0d0)) + (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 <= -100.0) || !(t_0 <= 0.05)) {
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 <= -100.0) or not (t_0 <= 0.05): tmp = t_0 / 2.0 else: tmp = ((x * 2.0) + ((0.3333333333333333 * math.pow(x, 3.0)) + (0.016666666666666666 * 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 <= -100.0) || !(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(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 <= -100.0) || ~((t_0 <= 0.05))) 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, -100.0], 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[(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 -100 \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} + 0.016666666666666666 \cdot {x}^{5}\right)}{2}\\
\end{array}
\end{array}
if (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) < -100 or 0.050000000000000003 < (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) Initial program 100.0%
if -100 < (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) < 0.050000000000000003Initial program 8.2%
Taylor expanded in x around 0 99.9%
Final simplification100.0%
(FPCore (x)
:precision binary64
(let* ((t_0 (- (exp x) (exp (- x)))))
(if (or (<= t_0 -100.0) (not (<= t_0 1e-6)))
(/ t_0 2.0)
(/ (* x (+ 2.0 (* x (* x 0.3333333333333333)))) 2.0))))
double code(double x) {
double t_0 = exp(x) - exp(-x);
double tmp;
if ((t_0 <= -100.0) || !(t_0 <= 1e-6)) {
tmp = t_0 / 2.0;
} else {
tmp = (x * (2.0 + (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 <= (-100.0d0)) .or. (.not. (t_0 <= 1d-6))) then
tmp = t_0 / 2.0d0
else
tmp = (x * (2.0d0 + (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 <= -100.0) || !(t_0 <= 1e-6)) {
tmp = t_0 / 2.0;
} else {
tmp = (x * (2.0 + (x * (x * 0.3333333333333333)))) / 2.0;
}
return tmp;
}
def code(x): t_0 = math.exp(x) - math.exp(-x) tmp = 0 if (t_0 <= -100.0) or not (t_0 <= 1e-6): tmp = t_0 / 2.0 else: tmp = (x * (2.0 + (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 <= -100.0) || !(t_0 <= 1e-6)) tmp = Float64(t_0 / 2.0); else tmp = Float64(Float64(x * Float64(2.0 + 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 <= -100.0) || ~((t_0 <= 1e-6))) tmp = t_0 / 2.0; else tmp = (x * (2.0 + (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, -100.0], N[Not[LessEqual[t$95$0, 1e-6]], $MachinePrecision]], N[(t$95$0 / 2.0), $MachinePrecision], N[(N[(x * N[(2.0 + 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 -100 \lor \neg \left(t_0 \leq 10^{-6}\right):\\
\;\;\;\;\frac{t_0}{2}\\
\mathbf{else}:\\
\;\;\;\;\frac{x \cdot \left(2 + x \cdot \left(x \cdot 0.3333333333333333\right)\right)}{2}\\
\end{array}
\end{array}
if (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) < -100 or 9.99999999999999955e-7 < (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) Initial program 99.9%
if -100 < (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) < 9.99999999999999955e-7Initial program 7.6%
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%
Applied egg-rr100.0%
Final simplification100.0%
(FPCore (x)
:precision binary64
(let* ((t_0 (- (exp x) (exp (- x)))))
(if (<= t_0 -100.0)
(/ 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 <= -100.0) {
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 <= (-100.0d0)) 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 <= -100.0) {
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 <= -100.0: 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 <= -100.0) 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 <= -100.0) 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[LessEqual[t$95$0, -100.0], 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 -100:\\
\;\;\;\;\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))) < -100Initial program 100.0%
if -100 < (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) Initial program 41.5%
Taylor expanded in x around 0 98.1%
Final simplification98.5%
(FPCore (x) :precision binary64 (if (or (<= x -5.0) (not (<= x 4.9))) (/ (* 0.016666666666666666 (pow x 5.0)) 2.0) (/ (+ (* x (* x (* x 0.3333333333333333))) (+ x x)) 2.0)))
double code(double x) {
double tmp;
if ((x <= -5.0) || !(x <= 4.9)) {
tmp = (0.016666666666666666 * pow(x, 5.0)) / 2.0;
} else {
tmp = ((x * (x * (x * 0.3333333333333333))) + (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 <= 4.9d0))) then
tmp = (0.016666666666666666d0 * (x ** 5.0d0)) / 2.0d0
else
tmp = ((x * (x * (x * 0.3333333333333333d0))) + (x + x)) / 2.0d0
end if
code = tmp
end function
public static double code(double x) {
double tmp;
if ((x <= -5.0) || !(x <= 4.9)) {
tmp = (0.016666666666666666 * Math.pow(x, 5.0)) / 2.0;
} else {
tmp = ((x * (x * (x * 0.3333333333333333))) + (x + x)) / 2.0;
}
return tmp;
}
def code(x): tmp = 0 if (x <= -5.0) or not (x <= 4.9): tmp = (0.016666666666666666 * math.pow(x, 5.0)) / 2.0 else: tmp = ((x * (x * (x * 0.3333333333333333))) + (x + x)) / 2.0 return tmp
function code(x) tmp = 0.0 if ((x <= -5.0) || !(x <= 4.9)) tmp = Float64(Float64(0.016666666666666666 * (x ^ 5.0)) / 2.0); else tmp = Float64(Float64(Float64(x * Float64(x * Float64(x * 0.3333333333333333))) + Float64(x + x)) / 2.0); end return tmp end
function tmp_2 = code(x) tmp = 0.0; if ((x <= -5.0) || ~((x <= 4.9))) tmp = (0.016666666666666666 * (x ^ 5.0)) / 2.0; else tmp = ((x * (x * (x * 0.3333333333333333))) + (x + x)) / 2.0; end tmp_2 = tmp; end
code[x_] := If[Or[LessEqual[x, -5.0], N[Not[LessEqual[x, 4.9]], $MachinePrecision]], N[(N[(0.016666666666666666 * N[Power[x, 5.0], $MachinePrecision]), $MachinePrecision] / 2.0), $MachinePrecision], N[(N[(N[(x * N[(x * N[(x * 0.3333333333333333), $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 4.9\right):\\
\;\;\;\;\frac{0.016666666666666666 \cdot {x}^{5}}{2}\\
\mathbf{else}:\\
\;\;\;\;\frac{x \cdot \left(x \cdot \left(x \cdot 0.3333333333333333\right)\right) + \left(x + x\right)}{2}\\
\end{array}
\end{array}
if x < -5 or 4.9000000000000004 < x Initial program 100.0%
Taylor expanded in x around 0 90.0%
Taylor expanded in x around inf 90.0%
Taylor expanded in x around inf 90.0%
if -5 < x < 4.9000000000000004Initial program 9.0%
Taylor expanded in x around 0 99.1%
unpow399.1%
associate-*r*99.1%
distribute-rgt-out99.1%
*-commutative99.1%
+-commutative99.1%
associate-*l*99.1%
fma-def99.1%
Simplified99.1%
fma-udef99.1%
distribute-rgt-in99.1%
add-log-exp8.8%
*-commutative8.8%
exp-lft-sqr8.6%
log-prod8.6%
add-log-exp20.7%
add-log-exp99.1%
Applied egg-rr99.1%
Final simplification94.4%
(FPCore (x) :precision binary64 (/ (+ (* x 2.0) (* 0.0003968253968253968 (pow x 7.0))) 2.0))
double code(double x) {
return ((x * 2.0) + (0.0003968253968253968 * pow(x, 7.0))) / 2.0;
}
real(8) function code(x)
real(8), intent (in) :: x
code = ((x * 2.0d0) + (0.0003968253968253968d0 * (x ** 7.0d0))) / 2.0d0
end function
public static double code(double x) {
return ((x * 2.0) + (0.0003968253968253968 * Math.pow(x, 7.0))) / 2.0;
}
def code(x): return ((x * 2.0) + (0.0003968253968253968 * math.pow(x, 7.0))) / 2.0
function code(x) return Float64(Float64(Float64(x * 2.0) + Float64(0.0003968253968253968 * (x ^ 7.0))) / 2.0) end
function tmp = code(x) tmp = ((x * 2.0) + (0.0003968253968253968 * (x ^ 7.0))) / 2.0; end
code[x_] := N[(N[(N[(x * 2.0), $MachinePrecision] + N[(0.0003968253968253968 * N[Power[x, 7.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / 2.0), $MachinePrecision]
\begin{array}{l}
\\
\frac{x \cdot 2 + 0.0003968253968253968 \cdot {x}^{7}}{2}
\end{array}
Initial program 55.9%
Taylor expanded in x around 0 96.8%
Taylor expanded in x around inf 96.5%
Final simplification96.5%
(FPCore (x) :precision binary64 (if (or (<= x -2.5) (not (<= x 2.5))) (* x (/ 1.0 (/ 6.0 (* x x)))) (/ (* x 2.0) 2.0)))
double code(double x) {
double tmp;
if ((x <= -2.5) || !(x <= 2.5)) {
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 <= (-2.5d0)) .or. (.not. (x <= 2.5d0))) 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 <= -2.5) || !(x <= 2.5)) {
tmp = x * (1.0 / (6.0 / (x * x)));
} else {
tmp = (x * 2.0) / 2.0;
}
return tmp;
}
def code(x): tmp = 0 if (x <= -2.5) or not (x <= 2.5): 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 <= -2.5) || !(x <= 2.5)) 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 <= -2.5) || ~((x <= 2.5))) 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, -2.5], N[Not[LessEqual[x, 2.5]], $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 -2.5 \lor \neg \left(x \leq 2.5\right):\\
\;\;\;\;x \cdot \frac{1}{\frac{6}{x \cdot x}}\\
\mathbf{else}:\\
\;\;\;\;\frac{x \cdot 2}{2}\\
\end{array}
\end{array}
if x < -2.5 or 2.5 < x Initial program 100.0%
Taylor expanded in x around 0 72.6%
unpow372.6%
associate-*r*72.6%
distribute-rgt-out72.6%
*-commutative72.6%
+-commutative72.6%
associate-*l*72.6%
fma-def72.6%
Simplified72.6%
Taylor expanded in x around inf 72.6%
unpow272.6%
Simplified72.6%
associate-/l*72.6%
div-inv72.6%
associate-/r*72.6%
metadata-eval72.6%
Applied egg-rr72.6%
if -2.5 < x < 2.5Initial program 8.2%
Taylor expanded in x around 0 99.4%
Final simplification85.5%
(FPCore (x) :precision binary64 (/ (+ (* x (* x (* x 0.3333333333333333))) (+ x x)) 2.0))
double code(double x) {
return ((x * (x * (x * 0.3333333333333333))) + (x + x)) / 2.0;
}
real(8) function code(x)
real(8), intent (in) :: x
code = ((x * (x * (x * 0.3333333333333333d0))) + (x + x)) / 2.0d0
end function
public static double code(double x) {
return ((x * (x * (x * 0.3333333333333333))) + (x + x)) / 2.0;
}
def code(x): return ((x * (x * (x * 0.3333333333333333))) + (x + x)) / 2.0
function code(x) return Float64(Float64(Float64(x * Float64(x * Float64(x * 0.3333333333333333))) + Float64(x + x)) / 2.0) end
function tmp = code(x) tmp = ((x * (x * (x * 0.3333333333333333))) + (x + x)) / 2.0; end
code[x_] := N[(N[(N[(x * N[(x * N[(x * 0.3333333333333333), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(x + x), $MachinePrecision]), $MachinePrecision] / 2.0), $MachinePrecision]
\begin{array}{l}
\\
\frac{x \cdot \left(x \cdot \left(x \cdot 0.3333333333333333\right)\right) + \left(x + x\right)}{2}
\end{array}
Initial program 55.9%
Taylor expanded in x around 0 85.6%
unpow385.6%
associate-*r*85.6%
distribute-rgt-out85.6%
*-commutative85.6%
+-commutative85.6%
associate-*l*85.6%
fma-def85.6%
Simplified85.6%
fma-udef85.6%
distribute-rgt-in85.6%
add-log-exp55.8%
*-commutative55.8%
exp-lft-sqr55.7%
log-prod55.7%
add-log-exp61.6%
add-log-exp85.6%
Applied egg-rr85.6%
Final simplification85.6%
(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 55.9%
Taylor expanded in x around 0 85.6%
unpow385.6%
associate-*r*85.6%
distribute-rgt-out85.6%
*-commutative85.6%
+-commutative85.6%
associate-*l*85.6%
fma-def85.6%
Simplified85.6%
fma-udef85.6%
Applied egg-rr85.6%
Final simplification85.6%
(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 55.9%
Taylor expanded in x around 0 50.7%
Final simplification50.7%
(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 55.9%
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 55.9%
Applied egg-rr3.3%
Final simplification3.3%
herbie shell --seed 2023213
(FPCore (x)
:name "Hyperbolic sine"
:precision binary64
(/ (- (exp x) (exp (- x))) 2.0))