
(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 -1000000.0) (not (<= t_0 0.02)))
(/ 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 <= -1000000.0) || !(t_0 <= 0.02)) {
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 <= (-1000000.0d0)) .or. (.not. (t_0 <= 0.02d0))) 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 <= -1000000.0) || !(t_0 <= 0.02)) {
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 <= -1000000.0) or not (t_0 <= 0.02): 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 <= -1000000.0) || !(t_0 <= 0.02)) 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 <= -1000000.0) || ~((t_0 <= 0.02))) 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, -1000000.0], N[Not[LessEqual[t$95$0, 0.02]], $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 -1000000 \lor \neg \left(t_0 \leq 0.02\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))) < -1e6 or 0.0200000000000000004 < (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) Initial program 100.0%
if -1e6 < (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) < 0.0200000000000000004Initial program 8.2%
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 -1000000.0) (not (<= t_0 0.0005)))
(/ 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 <= -1000000.0) || !(t_0 <= 0.0005)) {
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 <= (-1000000.0d0)) .or. (.not. (t_0 <= 0.0005d0))) 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 <= -1000000.0) || !(t_0 <= 0.0005)) {
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 <= -1000000.0) or not (t_0 <= 0.0005): 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 <= -1000000.0) || !(t_0 <= 0.0005)) 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 <= -1000000.0) || ~((t_0 <= 0.0005))) 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, -1000000.0], N[Not[LessEqual[t$95$0, 0.0005]], $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 -1000000 \lor \neg \left(t_0 \leq 0.0005\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))) < -1e6 or 5.0000000000000001e-4 < (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) Initial program 99.9%
if -1e6 < (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) < 5.0000000000000001e-4Initial 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%
distribute-rgt-in100.0%
Applied egg-rr100.0%
Final simplification100.0%
(FPCore (x)
:precision binary64
(let* ((t_0 (* x (* x 0.3333333333333333))))
(if (or (<= x -2e+77) (not (<= x 5e+60)))
(/ (+ (* x 2.0) (* 0.016666666666666666 (pow x 5.0))) 2.0)
(/
(* x (/ (+ (pow t_0 3.0) 8.0) (+ (* t_0 t_0) (- 4.0 (* 2.0 t_0)))))
2.0))))
double code(double x) {
double t_0 = x * (x * 0.3333333333333333);
double tmp;
if ((x <= -2e+77) || !(x <= 5e+60)) {
tmp = ((x * 2.0) + (0.016666666666666666 * pow(x, 5.0))) / 2.0;
} else {
tmp = (x * ((pow(t_0, 3.0) + 8.0) / ((t_0 * t_0) + (4.0 - (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 = x * (x * 0.3333333333333333d0)
if ((x <= (-2d+77)) .or. (.not. (x <= 5d+60))) then
tmp = ((x * 2.0d0) + (0.016666666666666666d0 * (x ** 5.0d0))) / 2.0d0
else
tmp = (x * (((t_0 ** 3.0d0) + 8.0d0) / ((t_0 * t_0) + (4.0d0 - (2.0d0 * 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+77) || !(x <= 5e+60)) {
tmp = ((x * 2.0) + (0.016666666666666666 * Math.pow(x, 5.0))) / 2.0;
} else {
tmp = (x * ((Math.pow(t_0, 3.0) + 8.0) / ((t_0 * t_0) + (4.0 - (2.0 * t_0))))) / 2.0;
}
return tmp;
}
def code(x): t_0 = x * (x * 0.3333333333333333) tmp = 0 if (x <= -2e+77) or not (x <= 5e+60): tmp = ((x * 2.0) + (0.016666666666666666 * math.pow(x, 5.0))) / 2.0 else: tmp = (x * ((math.pow(t_0, 3.0) + 8.0) / ((t_0 * t_0) + (4.0 - (2.0 * t_0))))) / 2.0 return tmp
function code(x) t_0 = Float64(x * Float64(x * 0.3333333333333333)) tmp = 0.0 if ((x <= -2e+77) || !(x <= 5e+60)) tmp = Float64(Float64(Float64(x * 2.0) + Float64(0.016666666666666666 * (x ^ 5.0))) / 2.0); else tmp = Float64(Float64(x * Float64(Float64((t_0 ^ 3.0) + 8.0) / Float64(Float64(t_0 * t_0) + Float64(4.0 - Float64(2.0 * 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+77) || ~((x <= 5e+60))) tmp = ((x * 2.0) + (0.016666666666666666 * (x ^ 5.0))) / 2.0; else tmp = (x * (((t_0 ^ 3.0) + 8.0) / ((t_0 * t_0) + (4.0 - (2.0 * t_0))))) / 2.0; end tmp_2 = tmp; end
code[x_] := Block[{t$95$0 = N[(x * N[(x * 0.3333333333333333), $MachinePrecision]), $MachinePrecision]}, If[Or[LessEqual[x, -2e+77], N[Not[LessEqual[x, 5e+60]], $MachinePrecision]], N[(N[(N[(x * 2.0), $MachinePrecision] + N[(0.016666666666666666 * N[Power[x, 5.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / 2.0), $MachinePrecision], N[(N[(x * N[(N[(N[Power[t$95$0, 3.0], $MachinePrecision] + 8.0), $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]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := x \cdot \left(x \cdot 0.3333333333333333\right)\\
\mathbf{if}\;x \leq -2 \cdot 10^{+77} \lor \neg \left(x \leq 5 \cdot 10^{+60}\right):\\
\;\;\;\;\frac{x \cdot 2 + 0.016666666666666666 \cdot {x}^{5}}{2}\\
\mathbf{else}:\\
\;\;\;\;\frac{x \cdot \frac{{t_0}^{3} + 8}{t_0 \cdot t_0 + \left(4 - 2 \cdot t_0\right)}}{2}\\
\end{array}
\end{array}
if x < -1.99999999999999997e77 or 4.99999999999999975e60 < x Initial program 100.0%
Taylor expanded in x around 0 100.0%
Taylor expanded in x around inf 100.0%
if -1.99999999999999997e77 < x < 4.99999999999999975e60Initial program 23.4%
Taylor expanded in x around 0 84.3%
unpow384.3%
associate-*r*84.3%
distribute-rgt-out84.3%
*-commutative84.3%
+-commutative84.3%
associate-*l*84.3%
fma-def84.3%
Simplified84.3%
fma-udef84.3%
flip3-+87.9%
metadata-eval87.9%
metadata-eval87.9%
Applied egg-rr87.9%
Final simplification92.6%
(FPCore (x) :precision binary64 (/ (+ (* x 2.0) (* 0.016666666666666666 (pow x 5.0))) 2.0))
double code(double x) {
return ((x * 2.0) + (0.016666666666666666 * pow(x, 5.0))) / 2.0;
}
real(8) function code(x)
real(8), intent (in) :: x
code = ((x * 2.0d0) + (0.016666666666666666d0 * (x ** 5.0d0))) / 2.0d0
end function
public static double code(double x) {
return ((x * 2.0) + (0.016666666666666666 * Math.pow(x, 5.0))) / 2.0;
}
def code(x): return ((x * 2.0) + (0.016666666666666666 * math.pow(x, 5.0))) / 2.0
function code(x) return Float64(Float64(Float64(x * 2.0) + Float64(0.016666666666666666 * (x ^ 5.0))) / 2.0) end
function tmp = code(x) tmp = ((x * 2.0) + (0.016666666666666666 * (x ^ 5.0))) / 2.0; end
code[x_] := N[(N[(N[(x * 2.0), $MachinePrecision] + N[(0.016666666666666666 * N[Power[x, 5.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / 2.0), $MachinePrecision]
\begin{array}{l}
\\
\frac{x \cdot 2 + 0.016666666666666666 \cdot {x}^{5}}{2}
\end{array}
Initial program 53.0%
Taylor expanded in x around 0 91.5%
Taylor expanded in x around inf 90.9%
Final simplification90.9%
(FPCore (x)
:precision binary64
(let* ((t_0 (* x (* x 0.3333333333333333)))
(t_1 (* 0.3333333333333333 (* x x))))
(if (or (<= x -2e+155) (not (<= x 5e+102)))
(/ (* x t_1) 2.0)
(/ (* x (/ (- (* t_0 t_0) 4.0) (- t_1 2.0))) 2.0))))
double code(double x) {
double t_0 = x * (x * 0.3333333333333333);
double t_1 = 0.3333333333333333 * (x * x);
double tmp;
if ((x <= -2e+155) || !(x <= 5e+102)) {
tmp = (x * t_1) / 2.0;
} else {
tmp = (x * (((t_0 * t_0) - 4.0) / (t_1 - 2.0))) / 2.0;
}
return tmp;
}
real(8) function code(x)
real(8), intent (in) :: x
real(8) :: t_0
real(8) :: t_1
real(8) :: tmp
t_0 = x * (x * 0.3333333333333333d0)
t_1 = 0.3333333333333333d0 * (x * x)
if ((x <= (-2d+155)) .or. (.not. (x <= 5d+102))) then
tmp = (x * t_1) / 2.0d0
else
tmp = (x * (((t_0 * t_0) - 4.0d0) / (t_1 - 2.0d0))) / 2.0d0
end if
code = tmp
end function
public static double code(double x) {
double t_0 = x * (x * 0.3333333333333333);
double t_1 = 0.3333333333333333 * (x * x);
double tmp;
if ((x <= -2e+155) || !(x <= 5e+102)) {
tmp = (x * t_1) / 2.0;
} else {
tmp = (x * (((t_0 * t_0) - 4.0) / (t_1 - 2.0))) / 2.0;
}
return tmp;
}
def code(x): t_0 = x * (x * 0.3333333333333333) t_1 = 0.3333333333333333 * (x * x) tmp = 0 if (x <= -2e+155) or not (x <= 5e+102): tmp = (x * t_1) / 2.0 else: tmp = (x * (((t_0 * t_0) - 4.0) / (t_1 - 2.0))) / 2.0 return tmp
function code(x) t_0 = Float64(x * Float64(x * 0.3333333333333333)) t_1 = Float64(0.3333333333333333 * Float64(x * x)) tmp = 0.0 if ((x <= -2e+155) || !(x <= 5e+102)) tmp = Float64(Float64(x * t_1) / 2.0); else tmp = Float64(Float64(x * Float64(Float64(Float64(t_0 * t_0) - 4.0) / Float64(t_1 - 2.0))) / 2.0); end return tmp end
function tmp_2 = code(x) t_0 = x * (x * 0.3333333333333333); t_1 = 0.3333333333333333 * (x * x); tmp = 0.0; if ((x <= -2e+155) || ~((x <= 5e+102))) tmp = (x * t_1) / 2.0; else tmp = (x * (((t_0 * t_0) - 4.0) / (t_1 - 2.0))) / 2.0; end tmp_2 = tmp; end
code[x_] := Block[{t$95$0 = N[(x * N[(x * 0.3333333333333333), $MachinePrecision]), $MachinePrecision]}, Block[{t$95$1 = N[(0.3333333333333333 * N[(x * x), $MachinePrecision]), $MachinePrecision]}, If[Or[LessEqual[x, -2e+155], N[Not[LessEqual[x, 5e+102]], $MachinePrecision]], N[(N[(x * t$95$1), $MachinePrecision] / 2.0), $MachinePrecision], N[(N[(x * N[(N[(N[(t$95$0 * t$95$0), $MachinePrecision] - 4.0), $MachinePrecision] / N[(t$95$1 - 2.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / 2.0), $MachinePrecision]]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := x \cdot \left(x \cdot 0.3333333333333333\right)\\
t_1 := 0.3333333333333333 \cdot \left(x \cdot x\right)\\
\mathbf{if}\;x \leq -2 \cdot 10^{+155} \lor \neg \left(x \leq 5 \cdot 10^{+102}\right):\\
\;\;\;\;\frac{x \cdot t_1}{2}\\
\mathbf{else}:\\
\;\;\;\;\frac{x \cdot \frac{t_0 \cdot t_0 - 4}{t_1 - 2}}{2}\\
\end{array}
\end{array}
if x < -2.00000000000000001e155 or 5e102 < 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%
if -2.00000000000000001e155 < x < 5e102Initial program 33.2%
Taylor expanded in x around 0 80.2%
unpow380.2%
associate-*r*80.2%
distribute-rgt-out80.1%
*-commutative80.1%
+-commutative80.1%
associate-*l*80.1%
fma-def80.1%
Simplified80.1%
fma-udef80.1%
flip-+83.7%
metadata-eval83.7%
Applied egg-rr83.7%
Taylor expanded in x around 0 83.7%
unpow283.7%
Simplified83.7%
Final simplification88.5%
(FPCore (x) :precision binary64 (if (or (<= x -2.5) (not (<= x 2.45))) (/ (* x (* 0.3333333333333333 (* x x))) 2.0) (/ (* x 2.0) 2.0)))
double code(double x) {
double tmp;
if ((x <= -2.5) || !(x <= 2.45)) {
tmp = (x * (0.3333333333333333 * (x * x))) / 2.0;
} 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 * (0.3333333333333333d0 * (x * x))) / 2.0d0
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 * (0.3333333333333333 * (x * x))) / 2.0;
} 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 * (0.3333333333333333 * (x * x))) / 2.0 else: tmp = (x * 2.0) / 2.0 return tmp
function code(x) tmp = 0.0 if ((x <= -2.5) || !(x <= 2.45)) tmp = Float64(Float64(x * Float64(0.3333333333333333 * Float64(x * x))) / 2.0); 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 * (0.3333333333333333 * (x * x))) / 2.0; 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[(N[(x * N[(0.3333333333333333 * N[(x * x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / 2.0), $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 \cdot \left(0.3333333333333333 \cdot \left(x \cdot x\right)\right)}{2}\\
\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 71.8%
unpow371.8%
associate-*r*71.8%
distribute-rgt-out71.8%
*-commutative71.8%
+-commutative71.8%
associate-*l*71.8%
fma-def71.8%
Simplified71.8%
Taylor expanded in x around inf 71.8%
unpow271.8%
Simplified71.8%
if -2.5 < x < 2.4500000000000002Initial program 8.9%
Taylor expanded in x around 0 98.8%
Final simplification85.7%
(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 53.0%
Taylor expanded in x around 0 86.0%
unpow386.0%
associate-*r*86.0%
distribute-rgt-out86.0%
*-commutative86.0%
+-commutative86.0%
associate-*l*86.0%
fma-def86.0%
Simplified86.0%
fma-udef86.0%
distribute-rgt-in86.0%
Applied egg-rr86.0%
Final simplification86.0%
(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 53.0%
Taylor expanded in x around 0 86.0%
unpow386.0%
associate-*r*86.0%
distribute-rgt-out86.0%
*-commutative86.0%
+-commutative86.0%
associate-*l*86.0%
fma-def86.0%
Simplified86.0%
fma-udef86.0%
Applied egg-rr86.0%
Final simplification86.0%
(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 53.0%
Taylor expanded in x around 0 53.7%
Final simplification53.7%
(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 53.0%
Applied egg-rr2.9%
Final simplification2.9%
(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 53.0%
Applied egg-rr3.7%
Final simplification3.7%
herbie shell --seed 2023238
(FPCore (x)
:name "Hyperbolic sine"
:precision binary64
(/ (- (exp x) (exp (- x))) 2.0))