
(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 8 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 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 <= -((double) INFINITY)) || !(t_0 <= 1e-6)) {
tmp = t_0 / 2.0;
} else {
tmp = (x * (2.0 + (x * (x * 0.3333333333333333)))) / 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 <= 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 <= -math.inf) 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 <= Float64(-Inf)) || !(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 <= -Inf) || ~((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, (-Infinity)], 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 -\infty \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))) < -inf.0 or 9.99999999999999955e-7 < (-.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))) < 9.99999999999999955e-7Initial program 6.2%
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 (* x (* x 0.3333333333333333)))
(t_1 (* x (* x (* x 0.16666666666666666))))
(t_2
(/
(* x (/ (- (* t_0 (* 0.3333333333333333 (* x x))) 4.0) (- t_0 2.0)))
2.0)))
(if (<= x -5e+154)
t_1
(if (<= x -2e+77)
t_2
(if (<= x 2e+77)
(/
(* x (/ (+ (pow t_0 3.0) 8.0) (+ (* t_0 t_0) (- 4.0 (* 2.0 t_0)))))
2.0)
(if (<= x 1e+102) t_2 t_1))))))
double code(double x) {
double t_0 = x * (x * 0.3333333333333333);
double t_1 = x * (x * (x * 0.16666666666666666));
double t_2 = (x * (((t_0 * (0.3333333333333333 * (x * x))) - 4.0) / (t_0 - 2.0))) / 2.0;
double tmp;
if (x <= -5e+154) {
tmp = t_1;
} else if (x <= -2e+77) {
tmp = t_2;
} else if (x <= 2e+77) {
tmp = (x * ((pow(t_0, 3.0) + 8.0) / ((t_0 * t_0) + (4.0 - (2.0 * t_0))))) / 2.0;
} else if (x <= 1e+102) {
tmp = t_2;
} else {
tmp = t_1;
}
return tmp;
}
real(8) function code(x)
real(8), intent (in) :: x
real(8) :: t_0
real(8) :: t_1
real(8) :: t_2
real(8) :: tmp
t_0 = x * (x * 0.3333333333333333d0)
t_1 = x * (x * (x * 0.16666666666666666d0))
t_2 = (x * (((t_0 * (0.3333333333333333d0 * (x * x))) - 4.0d0) / (t_0 - 2.0d0))) / 2.0d0
if (x <= (-5d+154)) then
tmp = t_1
else if (x <= (-2d+77)) then
tmp = t_2
else if (x <= 2d+77) then
tmp = (x * (((t_0 ** 3.0d0) + 8.0d0) / ((t_0 * t_0) + (4.0d0 - (2.0d0 * t_0))))) / 2.0d0
else if (x <= 1d+102) then
tmp = t_2
else
tmp = t_1
end if
code = tmp
end function
public static double code(double x) {
double t_0 = x * (x * 0.3333333333333333);
double t_1 = x * (x * (x * 0.16666666666666666));
double t_2 = (x * (((t_0 * (0.3333333333333333 * (x * x))) - 4.0) / (t_0 - 2.0))) / 2.0;
double tmp;
if (x <= -5e+154) {
tmp = t_1;
} else if (x <= -2e+77) {
tmp = t_2;
} else if (x <= 2e+77) {
tmp = (x * ((Math.pow(t_0, 3.0) + 8.0) / ((t_0 * t_0) + (4.0 - (2.0 * t_0))))) / 2.0;
} else if (x <= 1e+102) {
tmp = t_2;
} else {
tmp = t_1;
}
return tmp;
}
def code(x): t_0 = x * (x * 0.3333333333333333) t_1 = x * (x * (x * 0.16666666666666666)) t_2 = (x * (((t_0 * (0.3333333333333333 * (x * x))) - 4.0) / (t_0 - 2.0))) / 2.0 tmp = 0 if x <= -5e+154: tmp = t_1 elif x <= -2e+77: tmp = t_2 elif x <= 2e+77: tmp = (x * ((math.pow(t_0, 3.0) + 8.0) / ((t_0 * t_0) + (4.0 - (2.0 * t_0))))) / 2.0 elif x <= 1e+102: tmp = t_2 else: tmp = t_1 return tmp
function code(x) t_0 = Float64(x * Float64(x * 0.3333333333333333)) t_1 = Float64(x * Float64(x * Float64(x * 0.16666666666666666))) t_2 = Float64(Float64(x * Float64(Float64(Float64(t_0 * Float64(0.3333333333333333 * Float64(x * x))) - 4.0) / Float64(t_0 - 2.0))) / 2.0) tmp = 0.0 if (x <= -5e+154) tmp = t_1; elseif (x <= -2e+77) tmp = t_2; elseif (x <= 2e+77) 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); elseif (x <= 1e+102) tmp = t_2; else tmp = t_1; end return tmp end
function tmp_2 = code(x) t_0 = x * (x * 0.3333333333333333); t_1 = x * (x * (x * 0.16666666666666666)); t_2 = (x * (((t_0 * (0.3333333333333333 * (x * x))) - 4.0) / (t_0 - 2.0))) / 2.0; tmp = 0.0; if (x <= -5e+154) tmp = t_1; elseif (x <= -2e+77) tmp = t_2; elseif (x <= 2e+77) tmp = (x * (((t_0 ^ 3.0) + 8.0) / ((t_0 * t_0) + (4.0 - (2.0 * t_0))))) / 2.0; elseif (x <= 1e+102) tmp = t_2; else tmp = t_1; end tmp_2 = tmp; end
code[x_] := Block[{t$95$0 = N[(x * N[(x * 0.3333333333333333), $MachinePrecision]), $MachinePrecision]}, Block[{t$95$1 = N[(x * N[(x * N[(x * 0.16666666666666666), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, Block[{t$95$2 = 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]}, If[LessEqual[x, -5e+154], t$95$1, If[LessEqual[x, -2e+77], t$95$2, If[LessEqual[x, 2e+77], 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], If[LessEqual[x, 1e+102], t$95$2, t$95$1]]]]]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := x \cdot \left(x \cdot 0.3333333333333333\right)\\
t_1 := x \cdot \left(x \cdot \left(x \cdot 0.16666666666666666\right)\right)\\
t_2 := \frac{x \cdot \frac{t_0 \cdot \left(0.3333333333333333 \cdot \left(x \cdot x\right)\right) - 4}{t_0 - 2}}{2}\\
\mathbf{if}\;x \leq -5 \cdot 10^{+154}:\\
\;\;\;\;t_1\\
\mathbf{elif}\;x \leq -2 \cdot 10^{+77}:\\
\;\;\;\;t_2\\
\mathbf{elif}\;x \leq 2 \cdot 10^{+77}:\\
\;\;\;\;\frac{x \cdot \frac{{t_0}^{3} + 8}{t_0 \cdot t_0 + \left(4 - 2 \cdot t_0\right)}}{2}\\
\mathbf{elif}\;x \leq 10^{+102}:\\
\;\;\;\;t_2\\
\mathbf{else}:\\
\;\;\;\;t_1\\
\end{array}
\end{array}
if x < -5.00000000000000004e154 or 9.99999999999999977e101 < x Initial program 100.0%
Taylor expanded in x around 0 100.0%
unpow3100.0%
associate-*r*100.0%
distribute-rgt-out100.0%
*-commutative100.0%
+-commutative100.0%
associate-*l*100.0%
fma-def100.0%
Simplified100.0%
Taylor expanded in x around inf 100.0%
unpow2100.0%
Simplified100.0%
associate-/l*100.0%
div-inv100.0%
associate-/r*100.0%
metadata-eval100.0%
Applied egg-rr100.0%
associate-/r/100.0%
associate-*r*100.0%
metadata-eval100.0%
Applied egg-rr100.0%
if -5.00000000000000004e154 < x < -1.99999999999999997e77 or 1.99999999999999997e77 < x < 9.99999999999999977e101Initial program 100.0%
Taylor expanded in x around 0 52.0%
unpow352.0%
associate-*r*52.0%
distribute-rgt-out52.0%
*-commutative52.0%
+-commutative52.0%
associate-*l*52.0%
fma-def52.0%
Simplified52.0%
fma-udef52.0%
flip-+100.0%
metadata-eval100.0%
Applied egg-rr100.0%
Taylor expanded in x around 0 100.0%
unpow2100.0%
Simplified100.0%
if -1.99999999999999997e77 < x < 1.99999999999999997e77Initial program 24.5%
Taylor expanded in x around 0 81.5%
unpow381.5%
associate-*r*81.5%
distribute-rgt-out81.5%
*-commutative81.5%
+-commutative81.5%
associate-*l*81.5%
fma-def81.5%
Simplified81.5%
fma-udef81.5%
flip3-+89.3%
metadata-eval89.3%
metadata-eval89.3%
Applied egg-rr89.3%
Final simplification93.3%
(FPCore (x)
:precision binary64
(let* ((t_0 (* x (* x 0.3333333333333333))))
(if (or (<= x -5e+154) (not (<= x 1e+102)))
(* x (* x (* x 0.16666666666666666)))
(/
(* 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 <= -5e+154) || !(x <= 1e+102)) {
tmp = x * (x * (x * 0.16666666666666666));
} 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 <= (-5d+154)) .or. (.not. (x <= 1d+102))) then
tmp = x * (x * (x * 0.16666666666666666d0))
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 <= -5e+154) || !(x <= 1e+102)) {
tmp = x * (x * (x * 0.16666666666666666));
} 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 <= -5e+154) or not (x <= 1e+102): tmp = x * (x * (x * 0.16666666666666666)) 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 <= -5e+154) || !(x <= 1e+102)) tmp = Float64(x * Float64(x * Float64(x * 0.16666666666666666))); 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 <= -5e+154) || ~((x <= 1e+102))) tmp = x * (x * (x * 0.16666666666666666)); 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, -5e+154], N[Not[LessEqual[x, 1e+102]], $MachinePrecision]], N[(x * N[(x * N[(x * 0.16666666666666666), $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 -5 \cdot 10^{+154} \lor \neg \left(x \leq 10^{+102}\right):\\
\;\;\;\;x \cdot \left(x \cdot \left(x \cdot 0.16666666666666666\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 < -5.00000000000000004e154 or 9.99999999999999977e101 < x Initial program 100.0%
Taylor expanded in x around 0 100.0%
unpow3100.0%
associate-*r*100.0%
distribute-rgt-out100.0%
*-commutative100.0%
+-commutative100.0%
associate-*l*100.0%
fma-def100.0%
Simplified100.0%
Taylor expanded in x around inf 100.0%
unpow2100.0%
Simplified100.0%
associate-/l*100.0%
div-inv100.0%
associate-/r*100.0%
metadata-eval100.0%
Applied egg-rr100.0%
associate-/r/100.0%
associate-*r*100.0%
metadata-eval100.0%
Applied egg-rr100.0%
if -5.00000000000000004e154 < x < 9.99999999999999977e101Initial program 34.1%
Taylor expanded in x around 0 77.8%
unpow377.8%
associate-*r*77.8%
distribute-rgt-out77.8%
*-commutative77.8%
+-commutative77.8%
associate-*l*77.8%
fma-def77.8%
Simplified77.8%
fma-udef77.8%
flip-+83.9%
metadata-eval83.9%
Applied egg-rr83.9%
Taylor expanded in x around 0 83.9%
unpow283.9%
Simplified83.9%
Final simplification88.5%
(FPCore (x) :precision binary64 (if (or (<= x -2.4) (not (<= x 2.5))) (* x (* x (* x 0.16666666666666666))) (/ (* x 2.0) 2.0)))
double code(double x) {
double tmp;
if ((x <= -2.4) || !(x <= 2.5)) {
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 <= 2.5d0))) 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 <= 2.5)) {
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 <= 2.5): 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 <= 2.5)) tmp = Float64(x * Float64(x * Float64(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 <= 2.5))) 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, 2.5]], $MachinePrecision]], N[(x * N[(x * N[(x * 0.16666666666666666), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(N[(x * 2.0), $MachinePrecision] / 2.0), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -2.4 \lor \neg \left(x \leq 2.5\right):\\
\;\;\;\;x \cdot \left(x \cdot \left(x \cdot 0.16666666666666666\right)\right)\\
\mathbf{else}:\\
\;\;\;\;\frac{x \cdot 2}{2}\\
\end{array}
\end{array}
if x < -2.39999999999999991 or 2.5 < x Initial program 100.0%
Taylor expanded in x around 0 68.4%
unpow368.4%
associate-*r*68.4%
distribute-rgt-out68.4%
*-commutative68.4%
+-commutative68.4%
associate-*l*68.4%
fma-def68.4%
Simplified68.4%
Taylor expanded in x around inf 68.4%
unpow268.4%
Simplified68.4%
associate-/l*68.4%
div-inv68.4%
associate-/r*68.4%
metadata-eval68.4%
Applied egg-rr68.4%
associate-/r/68.4%
associate-*r*68.4%
metadata-eval68.4%
Applied egg-rr68.4%
if -2.39999999999999991 < x < 2.5Initial program 6.2%
Taylor expanded in x around 0 99.9%
Final simplification84.2%
(FPCore (x) :precision binary64 (/ (* x (+ 2.0 (* x (* x 0.3333333333333333)))) 2.0))
double code(double x) {
return (x * (2.0 + (x * (x * 0.3333333333333333)))) / 2.0;
}
real(8) function code(x)
real(8), intent (in) :: x
code = (x * (2.0d0 + (x * (x * 0.3333333333333333d0)))) / 2.0d0
end function
public static double code(double x) {
return (x * (2.0 + (x * (x * 0.3333333333333333)))) / 2.0;
}
def code(x): return (x * (2.0 + (x * (x * 0.3333333333333333)))) / 2.0
function code(x) return Float64(Float64(x * Float64(2.0 + Float64(x * Float64(x * 0.3333333333333333)))) / 2.0) end
function tmp = code(x) tmp = (x * (2.0 + (x * (x * 0.3333333333333333)))) / 2.0; end
code[x_] := N[(N[(x * N[(2.0 + N[(x * N[(x * 0.3333333333333333), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / 2.0), $MachinePrecision]
\begin{array}{l}
\\
\frac{x \cdot \left(2 + x \cdot \left(x \cdot 0.3333333333333333\right)\right)}{2}
\end{array}
Initial program 53.1%
Taylor expanded in x around 0 84.2%
unpow384.2%
associate-*r*84.2%
distribute-rgt-out84.2%
*-commutative84.2%
+-commutative84.2%
associate-*l*84.2%
fma-def84.2%
Simplified84.2%
fma-udef84.2%
Applied egg-rr84.2%
Final simplification84.2%
(FPCore (x) :precision binary64 (/ (* x 2.0) 2.0))
double code(double x) {
return (x * 2.0) / 2.0;
}
real(8) function code(x)
real(8), intent (in) :: x
code = (x * 2.0d0) / 2.0d0
end function
public static double code(double x) {
return (x * 2.0) / 2.0;
}
def code(x): return (x * 2.0) / 2.0
function code(x) return Float64(Float64(x * 2.0) / 2.0) end
function tmp = code(x) tmp = (x * 2.0) / 2.0; end
code[x_] := N[(N[(x * 2.0), $MachinePrecision] / 2.0), $MachinePrecision]
\begin{array}{l}
\\
\frac{x \cdot 2}{2}
\end{array}
Initial program 53.1%
Taylor expanded in x around 0 52.7%
Final simplification52.7%
(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 53.1%
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 53.1%
Applied egg-rr3.5%
Final simplification3.5%
herbie shell --seed 2023260
(FPCore (x)
:name "Hyperbolic sine"
:precision binary64
(/ (- (exp x) (exp (- x))) 2.0))