
(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 (<= t_0 (- INFINITY))
(/ t_0 2.0)
(if (<= t_0 0.002)
(/
(+
(* x 2.0)
(+
(* 0.3333333333333333 (pow x 3.0))
(* 0.016666666666666666 (pow x 5.0))))
2.0)
(- (* (exp x) 0.5) 0.5)))))
double code(double x) {
double t_0 = exp(x) - exp(-x);
double tmp;
if (t_0 <= -((double) INFINITY)) {
tmp = t_0 / 2.0;
} else if (t_0 <= 0.002) {
tmp = ((x * 2.0) + ((0.3333333333333333 * pow(x, 3.0)) + (0.016666666666666666 * pow(x, 5.0)))) / 2.0;
} else {
tmp = (exp(x) * 0.5) - 0.5;
}
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) {
tmp = t_0 / 2.0;
} else if (t_0 <= 0.002) {
tmp = ((x * 2.0) + ((0.3333333333333333 * Math.pow(x, 3.0)) + (0.016666666666666666 * Math.pow(x, 5.0)))) / 2.0;
} else {
tmp = (Math.exp(x) * 0.5) - 0.5;
}
return tmp;
}
def code(x): t_0 = math.exp(x) - math.exp(-x) tmp = 0 if t_0 <= -math.inf: tmp = t_0 / 2.0 elif t_0 <= 0.002: tmp = ((x * 2.0) + ((0.3333333333333333 * math.pow(x, 3.0)) + (0.016666666666666666 * math.pow(x, 5.0)))) / 2.0 else: tmp = (math.exp(x) * 0.5) - 0.5 return tmp
function code(x) t_0 = Float64(exp(x) - exp(Float64(-x))) tmp = 0.0 if (t_0 <= Float64(-Inf)) tmp = Float64(t_0 / 2.0); elseif (t_0 <= 0.002) tmp = Float64(Float64(Float64(x * 2.0) + Float64(Float64(0.3333333333333333 * (x ^ 3.0)) + Float64(0.016666666666666666 * (x ^ 5.0)))) / 2.0); else tmp = Float64(Float64(exp(x) * 0.5) - 0.5); end return tmp end
function tmp_2 = code(x) t_0 = exp(x) - exp(-x); tmp = 0.0; if (t_0 <= -Inf) tmp = t_0 / 2.0; elseif (t_0 <= 0.002) tmp = ((x * 2.0) + ((0.3333333333333333 * (x ^ 3.0)) + (0.016666666666666666 * (x ^ 5.0)))) / 2.0; else tmp = (exp(x) * 0.5) - 0.5; 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, (-Infinity)], N[(t$95$0 / 2.0), $MachinePrecision], If[LessEqual[t$95$0, 0.002], 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], N[(N[(N[Exp[x], $MachinePrecision] * 0.5), $MachinePrecision] - 0.5), $MachinePrecision]]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := e^{x} - e^{-x}\\
\mathbf{if}\;t_0 \leq -\infty:\\
\;\;\;\;\frac{t_0}{2}\\
\mathbf{elif}\;t_0 \leq 0.002:\\
\;\;\;\;\frac{x \cdot 2 + \left(0.3333333333333333 \cdot {x}^{3} + 0.016666666666666666 \cdot {x}^{5}\right)}{2}\\
\mathbf{else}:\\
\;\;\;\;e^{x} \cdot 0.5 - 0.5\\
\end{array}
\end{array}
if (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) < -inf.0Initial program 100.0%
if -inf.0 < (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) < 2e-3Initial program 9.7%
Taylor expanded in x around 0 100.0%
if 2e-3 < (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) Initial program 100.0%
div-sub100.0%
*-lft-identity100.0%
associate-*r/100.0%
associate-/l*100.0%
associate-/r/100.0%
fma-neg100.0%
metadata-eval100.0%
exp-neg100.0%
associate-/l/100.0%
associate-/r*100.0%
distribute-neg-frac100.0%
metadata-eval100.0%
metadata-eval100.0%
Simplified100.0%
Taylor expanded in x around 0 100.0%
Taylor expanded in x around inf 100.0%
Final simplification100.0%
(FPCore (x)
:precision binary64
(let* ((t_0 (- (exp x) (exp (- x)))))
(if (<= t_0 (- INFINITY))
(/ t_0 2.0)
(if (<= t_0 0.002)
(+
(* (pow x 3.0) 0.16666666666666666)
(+ x (* (pow x 5.0) 0.008333333333333333)))
(- (* (exp x) 0.5) 0.5)))))
double code(double x) {
double t_0 = exp(x) - exp(-x);
double tmp;
if (t_0 <= -((double) INFINITY)) {
tmp = t_0 / 2.0;
} else if (t_0 <= 0.002) {
tmp = (pow(x, 3.0) * 0.16666666666666666) + (x + (pow(x, 5.0) * 0.008333333333333333));
} else {
tmp = (exp(x) * 0.5) - 0.5;
}
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) {
tmp = t_0 / 2.0;
} else if (t_0 <= 0.002) {
tmp = (Math.pow(x, 3.0) * 0.16666666666666666) + (x + (Math.pow(x, 5.0) * 0.008333333333333333));
} else {
tmp = (Math.exp(x) * 0.5) - 0.5;
}
return tmp;
}
def code(x): t_0 = math.exp(x) - math.exp(-x) tmp = 0 if t_0 <= -math.inf: tmp = t_0 / 2.0 elif t_0 <= 0.002: tmp = (math.pow(x, 3.0) * 0.16666666666666666) + (x + (math.pow(x, 5.0) * 0.008333333333333333)) else: tmp = (math.exp(x) * 0.5) - 0.5 return tmp
function code(x) t_0 = Float64(exp(x) - exp(Float64(-x))) tmp = 0.0 if (t_0 <= Float64(-Inf)) tmp = Float64(t_0 / 2.0); elseif (t_0 <= 0.002) tmp = Float64(Float64((x ^ 3.0) * 0.16666666666666666) + Float64(x + Float64((x ^ 5.0) * 0.008333333333333333))); else tmp = Float64(Float64(exp(x) * 0.5) - 0.5); end return tmp end
function tmp_2 = code(x) t_0 = exp(x) - exp(-x); tmp = 0.0; if (t_0 <= -Inf) tmp = t_0 / 2.0; elseif (t_0 <= 0.002) tmp = ((x ^ 3.0) * 0.16666666666666666) + (x + ((x ^ 5.0) * 0.008333333333333333)); else tmp = (exp(x) * 0.5) - 0.5; 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, (-Infinity)], N[(t$95$0 / 2.0), $MachinePrecision], If[LessEqual[t$95$0, 0.002], N[(N[(N[Power[x, 3.0], $MachinePrecision] * 0.16666666666666666), $MachinePrecision] + N[(x + N[(N[Power[x, 5.0], $MachinePrecision] * 0.008333333333333333), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(N[(N[Exp[x], $MachinePrecision] * 0.5), $MachinePrecision] - 0.5), $MachinePrecision]]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := e^{x} - e^{-x}\\
\mathbf{if}\;t_0 \leq -\infty:\\
\;\;\;\;\frac{t_0}{2}\\
\mathbf{elif}\;t_0 \leq 0.002:\\
\;\;\;\;{x}^{3} \cdot 0.16666666666666666 + \left(x + {x}^{5} \cdot 0.008333333333333333\right)\\
\mathbf{else}:\\
\;\;\;\;e^{x} \cdot 0.5 - 0.5\\
\end{array}
\end{array}
if (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) < -inf.0Initial program 100.0%
if -inf.0 < (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) < 2e-3Initial program 9.7%
div-sub9.7%
*-lft-identity9.7%
associate-*r/9.7%
associate-/l*9.7%
associate-/r/9.7%
fma-neg9.7%
metadata-eval9.7%
exp-neg9.6%
associate-/l/9.6%
associate-/r*9.6%
distribute-neg-frac9.6%
metadata-eval9.6%
metadata-eval9.6%
Simplified9.6%
Taylor expanded in x around 0 100.0%
if 2e-3 < (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) Initial program 100.0%
div-sub100.0%
*-lft-identity100.0%
associate-*r/100.0%
associate-/l*100.0%
associate-/r/100.0%
fma-neg100.0%
metadata-eval100.0%
exp-neg100.0%
associate-/l/100.0%
associate-/r*100.0%
distribute-neg-frac100.0%
metadata-eval100.0%
metadata-eval100.0%
Simplified100.0%
Taylor expanded in x around 0 100.0%
Taylor expanded in x around inf 100.0%
Final simplification100.0%
(FPCore (x)
:precision binary64
(let* ((t_0 (- (exp x) (exp (- x)))))
(if (<= t_0 -0.002)
(/ t_0 2.0)
(if (<= t_0 0.002)
(/ (+ (* x 2.0) (* x (* x (* x 0.3333333333333333)))) 2.0)
(- (* (exp x) 0.5) 0.5)))))
double code(double x) {
double t_0 = exp(x) - exp(-x);
double tmp;
if (t_0 <= -0.002) {
tmp = t_0 / 2.0;
} else if (t_0 <= 0.002) {
tmp = ((x * 2.0) + (x * (x * (x * 0.3333333333333333)))) / 2.0;
} else {
tmp = (exp(x) * 0.5) - 0.5;
}
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 <= (-0.002d0)) then
tmp = t_0 / 2.0d0
else if (t_0 <= 0.002d0) then
tmp = ((x * 2.0d0) + (x * (x * (x * 0.3333333333333333d0)))) / 2.0d0
else
tmp = (exp(x) * 0.5d0) - 0.5d0
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 <= -0.002) {
tmp = t_0 / 2.0;
} else if (t_0 <= 0.002) {
tmp = ((x * 2.0) + (x * (x * (x * 0.3333333333333333)))) / 2.0;
} else {
tmp = (Math.exp(x) * 0.5) - 0.5;
}
return tmp;
}
def code(x): t_0 = math.exp(x) - math.exp(-x) tmp = 0 if t_0 <= -0.002: tmp = t_0 / 2.0 elif t_0 <= 0.002: tmp = ((x * 2.0) + (x * (x * (x * 0.3333333333333333)))) / 2.0 else: tmp = (math.exp(x) * 0.5) - 0.5 return tmp
function code(x) t_0 = Float64(exp(x) - exp(Float64(-x))) tmp = 0.0 if (t_0 <= -0.002) tmp = Float64(t_0 / 2.0); elseif (t_0 <= 0.002) tmp = Float64(Float64(Float64(x * 2.0) + Float64(x * Float64(x * Float64(x * 0.3333333333333333)))) / 2.0); else tmp = Float64(Float64(exp(x) * 0.5) - 0.5); end return tmp end
function tmp_2 = code(x) t_0 = exp(x) - exp(-x); tmp = 0.0; if (t_0 <= -0.002) tmp = t_0 / 2.0; elseif (t_0 <= 0.002) tmp = ((x * 2.0) + (x * (x * (x * 0.3333333333333333)))) / 2.0; else tmp = (exp(x) * 0.5) - 0.5; 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, -0.002], N[(t$95$0 / 2.0), $MachinePrecision], If[LessEqual[t$95$0, 0.002], N[(N[(N[(x * 2.0), $MachinePrecision] + N[(x * N[(x * N[(x * 0.3333333333333333), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / 2.0), $MachinePrecision], N[(N[(N[Exp[x], $MachinePrecision] * 0.5), $MachinePrecision] - 0.5), $MachinePrecision]]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := e^{x} - e^{-x}\\
\mathbf{if}\;t_0 \leq -0.002:\\
\;\;\;\;\frac{t_0}{2}\\
\mathbf{elif}\;t_0 \leq 0.002:\\
\;\;\;\;\frac{x \cdot 2 + x \cdot \left(x \cdot \left(x \cdot 0.3333333333333333\right)\right)}{2}\\
\mathbf{else}:\\
\;\;\;\;e^{x} \cdot 0.5 - 0.5\\
\end{array}
\end{array}
if (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) < -2e-3Initial program 99.8%
if -2e-3 < (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) < 2e-3Initial program 9.1%
Taylor expanded in x around 0 100.0%
unpow3100.0%
unpow2100.0%
associate-*r*100.0%
distribute-rgt-out99.9%
*-commutative99.9%
+-commutative99.9%
unpow299.9%
associate-*l*99.9%
*-commutative99.9%
fma-def99.9%
*-commutative99.9%
Simplified99.9%
fma-udef99.9%
distribute-rgt-in100.0%
*-commutative100.0%
Applied egg-rr100.0%
if 2e-3 < (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) Initial program 100.0%
div-sub100.0%
*-lft-identity100.0%
associate-*r/100.0%
associate-/l*100.0%
associate-/r/100.0%
fma-neg100.0%
metadata-eval100.0%
exp-neg100.0%
associate-/l/100.0%
associate-/r*100.0%
distribute-neg-frac100.0%
metadata-eval100.0%
metadata-eval100.0%
Simplified100.0%
Taylor expanded in x around 0 100.0%
Taylor expanded in x around inf 100.0%
Final simplification99.9%
(FPCore (x) :precision binary64 (if (<= x 1.25) (/ (* x (/ (+ (pow (* x (* x 0.3333333333333333)) 3.0) 8.0) 4.0)) 2.0) (- (* (exp x) 0.5) 0.5)))
double code(double x) {
double tmp;
if (x <= 1.25) {
tmp = (x * ((pow((x * (x * 0.3333333333333333)), 3.0) + 8.0) / 4.0)) / 2.0;
} else {
tmp = (exp(x) * 0.5) - 0.5;
}
return tmp;
}
real(8) function code(x)
real(8), intent (in) :: x
real(8) :: tmp
if (x <= 1.25d0) then
tmp = (x * ((((x * (x * 0.3333333333333333d0)) ** 3.0d0) + 8.0d0) / 4.0d0)) / 2.0d0
else
tmp = (exp(x) * 0.5d0) - 0.5d0
end if
code = tmp
end function
public static double code(double x) {
double tmp;
if (x <= 1.25) {
tmp = (x * ((Math.pow((x * (x * 0.3333333333333333)), 3.0) + 8.0) / 4.0)) / 2.0;
} else {
tmp = (Math.exp(x) * 0.5) - 0.5;
}
return tmp;
}
def code(x): tmp = 0 if x <= 1.25: tmp = (x * ((math.pow((x * (x * 0.3333333333333333)), 3.0) + 8.0) / 4.0)) / 2.0 else: tmp = (math.exp(x) * 0.5) - 0.5 return tmp
function code(x) tmp = 0.0 if (x <= 1.25) tmp = Float64(Float64(x * Float64(Float64((Float64(x * Float64(x * 0.3333333333333333)) ^ 3.0) + 8.0) / 4.0)) / 2.0); else tmp = Float64(Float64(exp(x) * 0.5) - 0.5); end return tmp end
function tmp_2 = code(x) tmp = 0.0; if (x <= 1.25) tmp = (x * ((((x * (x * 0.3333333333333333)) ^ 3.0) + 8.0) / 4.0)) / 2.0; else tmp = (exp(x) * 0.5) - 0.5; end tmp_2 = tmp; end
code[x_] := If[LessEqual[x, 1.25], 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], N[(N[(N[Exp[x], $MachinePrecision] * 0.5), $MachinePrecision] - 0.5), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq 1.25:\\
\;\;\;\;\frac{x \cdot \frac{{\left(x \cdot \left(x \cdot 0.3333333333333333\right)\right)}^{3} + 8}{4}}{2}\\
\mathbf{else}:\\
\;\;\;\;e^{x} \cdot 0.5 - 0.5\\
\end{array}
\end{array}
if x < 1.25Initial program 41.8%
Taylor expanded in x around 0 90.1%
unpow390.1%
unpow290.1%
associate-*r*90.1%
distribute-rgt-out90.1%
*-commutative90.1%
+-commutative90.1%
unpow290.1%
associate-*l*90.1%
*-commutative90.1%
fma-def90.1%
*-commutative90.1%
Simplified90.1%
fma-udef90.1%
flip3-+66.1%
*-commutative66.1%
metadata-eval66.1%
*-commutative66.1%
*-commutative66.1%
metadata-eval66.1%
*-commutative66.1%
Applied egg-rr66.1%
Taylor expanded in x around 0 92.4%
if 1.25 < x Initial program 100.0%
div-sub100.0%
*-lft-identity100.0%
associate-*r/100.0%
associate-/l*100.0%
associate-/r/100.0%
fma-neg100.0%
metadata-eval100.0%
exp-neg100.0%
associate-/l/100.0%
associate-/r*100.0%
distribute-neg-frac100.0%
metadata-eval100.0%
metadata-eval100.0%
Simplified100.0%
Taylor expanded in x around 0 100.0%
Taylor expanded in x around inf 100.0%
Final simplification94.2%
(FPCore (x)
:precision binary64
(if (<= x -5.0)
(* (pow x 5.0) 0.008333333333333333)
(if (<= x 2.2)
(/ (+ (* x 2.0) (* x (* x (* x 0.3333333333333333)))) 2.0)
(- (* (exp x) 0.5) 0.5))))
double code(double x) {
double tmp;
if (x <= -5.0) {
tmp = pow(x, 5.0) * 0.008333333333333333;
} else if (x <= 2.2) {
tmp = ((x * 2.0) + (x * (x * (x * 0.3333333333333333)))) / 2.0;
} else {
tmp = (exp(x) * 0.5) - 0.5;
}
return tmp;
}
real(8) function code(x)
real(8), intent (in) :: x
real(8) :: tmp
if (x <= (-5.0d0)) then
tmp = (x ** 5.0d0) * 0.008333333333333333d0
else if (x <= 2.2d0) then
tmp = ((x * 2.0d0) + (x * (x * (x * 0.3333333333333333d0)))) / 2.0d0
else
tmp = (exp(x) * 0.5d0) - 0.5d0
end if
code = tmp
end function
public static double code(double x) {
double tmp;
if (x <= -5.0) {
tmp = Math.pow(x, 5.0) * 0.008333333333333333;
} else if (x <= 2.2) {
tmp = ((x * 2.0) + (x * (x * (x * 0.3333333333333333)))) / 2.0;
} else {
tmp = (Math.exp(x) * 0.5) - 0.5;
}
return tmp;
}
def code(x): tmp = 0 if x <= -5.0: tmp = math.pow(x, 5.0) * 0.008333333333333333 elif x <= 2.2: tmp = ((x * 2.0) + (x * (x * (x * 0.3333333333333333)))) / 2.0 else: tmp = (math.exp(x) * 0.5) - 0.5 return tmp
function code(x) tmp = 0.0 if (x <= -5.0) tmp = Float64((x ^ 5.0) * 0.008333333333333333); elseif (x <= 2.2) tmp = Float64(Float64(Float64(x * 2.0) + Float64(x * Float64(x * Float64(x * 0.3333333333333333)))) / 2.0); else tmp = Float64(Float64(exp(x) * 0.5) - 0.5); end return tmp end
function tmp_2 = code(x) tmp = 0.0; if (x <= -5.0) tmp = (x ^ 5.0) * 0.008333333333333333; elseif (x <= 2.2) tmp = ((x * 2.0) + (x * (x * (x * 0.3333333333333333)))) / 2.0; else tmp = (exp(x) * 0.5) - 0.5; end tmp_2 = tmp; end
code[x_] := If[LessEqual[x, -5.0], N[(N[Power[x, 5.0], $MachinePrecision] * 0.008333333333333333), $MachinePrecision], If[LessEqual[x, 2.2], N[(N[(N[(x * 2.0), $MachinePrecision] + N[(x * N[(x * N[(x * 0.3333333333333333), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / 2.0), $MachinePrecision], N[(N[(N[Exp[x], $MachinePrecision] * 0.5), $MachinePrecision] - 0.5), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -5:\\
\;\;\;\;{x}^{5} \cdot 0.008333333333333333\\
\mathbf{elif}\;x \leq 2.2:\\
\;\;\;\;\frac{x \cdot 2 + x \cdot \left(x \cdot \left(x \cdot 0.3333333333333333\right)\right)}{2}\\
\mathbf{else}:\\
\;\;\;\;e^{x} \cdot 0.5 - 0.5\\
\end{array}
\end{array}
if x < -5Initial program 100.0%
div-sub100.0%
*-lft-identity100.0%
associate-*r/100.0%
associate-/l*100.0%
associate-/r/100.0%
fma-neg100.0%
metadata-eval100.0%
exp-neg100.0%
associate-/l/100.0%
associate-/r*100.0%
distribute-neg-frac100.0%
metadata-eval100.0%
metadata-eval100.0%
Simplified100.0%
Taylor expanded in x around 0 79.3%
Taylor expanded in x around inf 79.3%
*-commutative79.3%
Simplified79.3%
if -5 < x < 2.2000000000000002Initial program 9.7%
Taylor expanded in x around 0 99.9%
unpow399.9%
unpow299.9%
associate-*r*99.9%
distribute-rgt-out99.8%
*-commutative99.8%
+-commutative99.8%
unpow299.8%
associate-*l*99.8%
*-commutative99.8%
fma-def99.8%
*-commutative99.8%
Simplified99.8%
fma-udef99.8%
distribute-rgt-in99.9%
*-commutative99.9%
Applied egg-rr99.9%
if 2.2000000000000002 < x Initial program 100.0%
div-sub100.0%
*-lft-identity100.0%
associate-*r/100.0%
associate-/l*100.0%
associate-/r/100.0%
fma-neg100.0%
metadata-eval100.0%
exp-neg100.0%
associate-/l/100.0%
associate-/r*100.0%
distribute-neg-frac100.0%
metadata-eval100.0%
metadata-eval100.0%
Simplified100.0%
Taylor expanded in x around 0 100.0%
Taylor expanded in x around inf 100.0%
Final simplification94.3%
(FPCore (x) :precision binary64 (if (or (<= x -5.0) (not (<= x 5.0))) (* (pow x 5.0) 0.008333333333333333) (/ (+ (* x 2.0) (* x (* x (* x 0.3333333333333333)))) 2.0)))
double code(double x) {
double tmp;
if ((x <= -5.0) || !(x <= 5.0)) {
tmp = pow(x, 5.0) * 0.008333333333333333;
} 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) :: tmp
if ((x <= (-5.0d0)) .or. (.not. (x <= 5.0d0))) then
tmp = (x ** 5.0d0) * 0.008333333333333333d0
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 tmp;
if ((x <= -5.0) || !(x <= 5.0)) {
tmp = Math.pow(x, 5.0) * 0.008333333333333333;
} else {
tmp = ((x * 2.0) + (x * (x * (x * 0.3333333333333333)))) / 2.0;
}
return tmp;
}
def code(x): tmp = 0 if (x <= -5.0) or not (x <= 5.0): tmp = math.pow(x, 5.0) * 0.008333333333333333 else: tmp = ((x * 2.0) + (x * (x * (x * 0.3333333333333333)))) / 2.0 return tmp
function code(x) tmp = 0.0 if ((x <= -5.0) || !(x <= 5.0)) tmp = Float64((x ^ 5.0) * 0.008333333333333333); 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) tmp = 0.0; if ((x <= -5.0) || ~((x <= 5.0))) tmp = (x ^ 5.0) * 0.008333333333333333; else tmp = ((x * 2.0) + (x * (x * (x * 0.3333333333333333)))) / 2.0; end tmp_2 = tmp; end
code[x_] := If[Or[LessEqual[x, -5.0], N[Not[LessEqual[x, 5.0]], $MachinePrecision]], N[(N[Power[x, 5.0], $MachinePrecision] * 0.008333333333333333), $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}
\mathbf{if}\;x \leq -5 \lor \neg \left(x \leq 5\right):\\
\;\;\;\;{x}^{5} \cdot 0.008333333333333333\\
\mathbf{else}:\\
\;\;\;\;\frac{x \cdot 2 + x \cdot \left(x \cdot \left(x \cdot 0.3333333333333333\right)\right)}{2}\\
\end{array}
\end{array}
if x < -5 or 5 < x Initial program 100.0%
div-sub100.0%
*-lft-identity100.0%
associate-*r/100.0%
associate-/l*100.0%
associate-/r/100.0%
fma-neg100.0%
metadata-eval100.0%
exp-neg100.0%
associate-/l/100.0%
associate-/r*100.0%
distribute-neg-frac100.0%
metadata-eval100.0%
metadata-eval100.0%
Simplified100.0%
Taylor expanded in x around 0 79.6%
Taylor expanded in x around inf 79.6%
*-commutative79.6%
Simplified79.6%
if -5 < x < 5Initial program 9.7%
Taylor expanded in x around 0 99.9%
unpow399.9%
unpow299.9%
associate-*r*99.9%
distribute-rgt-out99.8%
*-commutative99.8%
+-commutative99.8%
unpow299.8%
associate-*l*99.8%
*-commutative99.8%
fma-def99.8%
*-commutative99.8%
Simplified99.8%
fma-udef99.8%
distribute-rgt-in99.9%
*-commutative99.9%
Applied egg-rr99.9%
Final simplification89.5%
(FPCore (x)
:precision binary64
(let* ((t_0 (* x (* x 0.3333333333333333))))
(if (or (<= x -2e+154) (not (<= x 2e+102)))
(* x (* 0.16666666666666666 (* x x)))
(/
(* x (/ (- (* t_0 (* 0.3333333333333333 (* x x))) 4.0) (- t_0 2.0)))
2.0))))
double code(double x) {
double t_0 = x * (x * 0.3333333333333333);
double tmp;
if ((x <= -2e+154) || !(x <= 2e+102)) {
tmp = x * (0.16666666666666666 * (x * x));
} else {
tmp = (x * (((t_0 * (0.3333333333333333 * (x * x))) - 4.0) / (t_0 - 2.0))) / 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+154)) .or. (.not. (x <= 2d+102))) then
tmp = x * (0.16666666666666666d0 * (x * x))
else
tmp = (x * (((t_0 * (0.3333333333333333d0 * (x * x))) - 4.0d0) / (t_0 - 2.0d0))) / 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+154) || !(x <= 2e+102)) {
tmp = x * (0.16666666666666666 * (x * x));
} else {
tmp = (x * (((t_0 * (0.3333333333333333 * (x * x))) - 4.0) / (t_0 - 2.0))) / 2.0;
}
return tmp;
}
def code(x): t_0 = x * (x * 0.3333333333333333) tmp = 0 if (x <= -2e+154) or not (x <= 2e+102): tmp = x * (0.16666666666666666 * (x * x)) else: tmp = (x * (((t_0 * (0.3333333333333333 * (x * x))) - 4.0) / (t_0 - 2.0))) / 2.0 return tmp
function code(x) t_0 = Float64(x * Float64(x * 0.3333333333333333)) tmp = 0.0 if ((x <= -2e+154) || !(x <= 2e+102)) tmp = Float64(x * Float64(0.16666666666666666 * Float64(x * x))); else tmp = Float64(Float64(x * Float64(Float64(Float64(t_0 * Float64(0.3333333333333333 * Float64(x * x))) - 4.0) / Float64(t_0 - 2.0))) / 2.0); end return tmp end
function tmp_2 = code(x) t_0 = x * (x * 0.3333333333333333); tmp = 0.0; if ((x <= -2e+154) || ~((x <= 2e+102))) tmp = x * (0.16666666666666666 * (x * x)); else tmp = (x * (((t_0 * (0.3333333333333333 * (x * x))) - 4.0) / (t_0 - 2.0))) / 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+154], N[Not[LessEqual[x, 2e+102]], $MachinePrecision]], N[(x * N[(0.16666666666666666 * N[(x * x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(N[(x * N[(N[(N[(t$95$0 * N[(0.3333333333333333 * N[(x * x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - 4.0), $MachinePrecision] / N[(t$95$0 - 2.0), $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^{+154} \lor \neg \left(x \leq 2 \cdot 10^{+102}\right):\\
\;\;\;\;x \cdot \left(0.16666666666666666 \cdot \left(x \cdot x\right)\right)\\
\mathbf{else}:\\
\;\;\;\;\frac{x \cdot \frac{t_0 \cdot \left(0.3333333333333333 \cdot \left(x \cdot x\right)\right) - 4}{t_0 - 2}}{2}\\
\end{array}
\end{array}
if x < -2.00000000000000007e154 or 1.99999999999999995e102 < x Initial program 100.0%
Taylor expanded in x around 0 100.0%
unpow3100.0%
unpow2100.0%
associate-*r*100.0%
distribute-rgt-out100.0%
*-commutative100.0%
+-commutative100.0%
unpow2100.0%
associate-*l*100.0%
*-commutative100.0%
fma-def100.0%
*-commutative100.0%
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%
Taylor expanded in x around 0 100.0%
unpow2100.0%
Simplified100.0%
if -2.00000000000000007e154 < x < 1.99999999999999995e102Initial program 35.9%
Taylor expanded in x around 0 78.3%
unpow378.3%
unpow278.3%
associate-*r*78.3%
distribute-rgt-out78.3%
*-commutative78.3%
+-commutative78.3%
unpow278.3%
associate-*l*78.3%
*-commutative78.3%
fma-def78.3%
*-commutative78.3%
Simplified78.3%
fma-udef78.3%
flip-+81.9%
*-commutative81.9%
*-commutative81.9%
metadata-eval81.9%
*-commutative81.9%
Applied egg-rr81.9%
Taylor expanded in x around 0 81.9%
unpow281.9%
Simplified81.9%
Final simplification87.6%
(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 55.9%
Taylor expanded in x around 0 85.1%
unpow385.1%
unpow285.1%
associate-*r*85.1%
distribute-rgt-out85.1%
*-commutative85.1%
+-commutative85.1%
unpow285.1%
associate-*l*85.1%
*-commutative85.1%
fma-def85.1%
*-commutative85.1%
Simplified85.1%
fma-udef85.1%
distribute-rgt-in85.1%
*-commutative85.1%
Applied egg-rr85.1%
Final simplification85.1%
(FPCore (x) :precision binary64 (if (or (<= x -2.5) (not (<= x 2.5))) (* x (* 0.16666666666666666 (* x x))) x))
double code(double x) {
double tmp;
if ((x <= -2.5) || !(x <= 2.5)) {
tmp = x * (0.16666666666666666 * (x * x));
} else {
tmp = x;
}
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 * (0.16666666666666666d0 * (x * x))
else
tmp = x
end if
code = tmp
end function
public static double code(double x) {
double tmp;
if ((x <= -2.5) || !(x <= 2.5)) {
tmp = x * (0.16666666666666666 * (x * x));
} else {
tmp = x;
}
return tmp;
}
def code(x): tmp = 0 if (x <= -2.5) or not (x <= 2.5): tmp = x * (0.16666666666666666 * (x * x)) else: tmp = x return tmp
function code(x) tmp = 0.0 if ((x <= -2.5) || !(x <= 2.5)) tmp = Float64(x * Float64(0.16666666666666666 * Float64(x * x))); else tmp = x; end return tmp end
function tmp_2 = code(x) tmp = 0.0; if ((x <= -2.5) || ~((x <= 2.5))) tmp = x * (0.16666666666666666 * (x * x)); else tmp = x; end tmp_2 = tmp; end
code[x_] := If[Or[LessEqual[x, -2.5], N[Not[LessEqual[x, 2.5]], $MachinePrecision]], N[(x * N[(0.16666666666666666 * N[(x * x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], x]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -2.5 \lor \neg \left(x \leq 2.5\right):\\
\;\;\;\;x \cdot \left(0.16666666666666666 \cdot \left(x \cdot x\right)\right)\\
\mathbf{else}:\\
\;\;\;\;x\\
\end{array}
\end{array}
if x < -2.5 or 2.5 < x Initial program 100.0%
Taylor expanded in x around 0 71.0%
unpow371.0%
unpow271.0%
associate-*r*71.0%
distribute-rgt-out71.0%
*-commutative71.0%
+-commutative71.0%
unpow271.0%
associate-*l*71.0%
*-commutative71.0%
fma-def71.0%
*-commutative71.0%
Simplified71.0%
Taylor expanded in x around inf 71.0%
unpow271.0%
Simplified71.0%
associate-/l*71.0%
div-inv71.0%
associate-/r*71.0%
metadata-eval71.0%
Applied egg-rr71.0%
Taylor expanded in x around 0 71.0%
unpow271.0%
Simplified71.0%
if -2.5 < x < 2.5Initial program 9.7%
div-sub9.7%
*-lft-identity9.7%
associate-*r/9.7%
associate-/l*9.7%
associate-/r/9.7%
fma-neg9.7%
metadata-eval9.7%
exp-neg9.6%
associate-/l/9.6%
associate-/r*9.6%
distribute-neg-frac9.6%
metadata-eval9.6%
metadata-eval9.6%
Simplified9.6%
Taylor expanded in x around 0 98.7%
Final simplification84.5%
(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 85.1%
unpow385.1%
unpow285.1%
associate-*r*85.1%
distribute-rgt-out85.1%
*-commutative85.1%
+-commutative85.1%
unpow285.1%
associate-*l*85.1%
*-commutative85.1%
fma-def85.1%
*-commutative85.1%
Simplified85.1%
fma-udef85.1%
*-commutative85.1%
Applied egg-rr85.1%
Final simplification85.1%
(FPCore (x) :precision binary64 x)
double code(double x) {
return x;
}
real(8) function code(x)
real(8), intent (in) :: x
code = x
end function
public static double code(double x) {
return x;
}
def code(x): return x
function code(x) return x end
function tmp = code(x) tmp = x; end
code[x_] := x
\begin{array}{l}
\\
x
\end{array}
Initial program 55.9%
div-sub55.9%
*-lft-identity55.9%
associate-*r/55.9%
associate-/l*55.9%
associate-/r/55.9%
fma-neg55.9%
metadata-eval55.9%
exp-neg55.8%
associate-/l/55.8%
associate-/r*55.8%
distribute-neg-frac55.8%
metadata-eval55.8%
metadata-eval55.8%
Simplified55.8%
Taylor expanded in x around 0 51.0%
Final simplification51.0%
herbie shell --seed 2023258
(FPCore (x)
:name "Hyperbolic sine"
:precision binary64
(/ (- (exp x) (exp (- x))) 2.0))