
(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 9 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 -0.5) (not (<= t_0 1e-6)))
(/ t_0 2.0)
(/ (* x (+ 2.0 (* 0.3333333333333333 (* x x)))) 2.0))))
double code(double x) {
double t_0 = exp(x) - exp(-x);
double tmp;
if ((t_0 <= -0.5) || !(t_0 <= 1e-6)) {
tmp = t_0 / 2.0;
} else {
tmp = (x * (2.0 + (0.3333333333333333 * (x * x)))) / 2.0;
}
return tmp;
}
real(8) function code(x)
real(8), intent (in) :: x
real(8) :: t_0
real(8) :: tmp
t_0 = exp(x) - exp(-x)
if ((t_0 <= (-0.5d0)) .or. (.not. (t_0 <= 1d-6))) then
tmp = t_0 / 2.0d0
else
tmp = (x * (2.0d0 + (0.3333333333333333d0 * (x * x)))) / 2.0d0
end if
code = tmp
end function
public static double code(double x) {
double t_0 = Math.exp(x) - Math.exp(-x);
double tmp;
if ((t_0 <= -0.5) || !(t_0 <= 1e-6)) {
tmp = t_0 / 2.0;
} else {
tmp = (x * (2.0 + (0.3333333333333333 * (x * x)))) / 2.0;
}
return tmp;
}
def code(x): t_0 = math.exp(x) - math.exp(-x) tmp = 0 if (t_0 <= -0.5) or not (t_0 <= 1e-6): tmp = t_0 / 2.0 else: tmp = (x * (2.0 + (0.3333333333333333 * (x * x)))) / 2.0 return tmp
function code(x) t_0 = Float64(exp(x) - exp(Float64(-x))) tmp = 0.0 if ((t_0 <= -0.5) || !(t_0 <= 1e-6)) tmp = Float64(t_0 / 2.0); else tmp = Float64(Float64(x * Float64(2.0 + Float64(0.3333333333333333 * Float64(x * x)))) / 2.0); end return tmp end
function tmp_2 = code(x) t_0 = exp(x) - exp(-x); tmp = 0.0; if ((t_0 <= -0.5) || ~((t_0 <= 1e-6))) tmp = t_0 / 2.0; else tmp = (x * (2.0 + (0.3333333333333333 * (x * x)))) / 2.0; end tmp_2 = tmp; end
code[x_] := Block[{t$95$0 = N[(N[Exp[x], $MachinePrecision] - N[Exp[(-x)], $MachinePrecision]), $MachinePrecision]}, If[Or[LessEqual[t$95$0, -0.5], N[Not[LessEqual[t$95$0, 1e-6]], $MachinePrecision]], N[(t$95$0 / 2.0), $MachinePrecision], N[(N[(x * N[(2.0 + N[(0.3333333333333333 * N[(x * x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / 2.0), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := e^{x} - e^{-x}\\
\mathbf{if}\;t_0 \leq -0.5 \lor \neg \left(t_0 \leq 10^{-6}\right):\\
\;\;\;\;\frac{t_0}{2}\\
\mathbf{else}:\\
\;\;\;\;\frac{x \cdot \left(2 + 0.3333333333333333 \cdot \left(x \cdot x\right)\right)}{2}\\
\end{array}
\end{array}
if (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) < -0.5 or 9.99999999999999955e-7 < (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) Initial program 100.0%
if -0.5 < (-.f64 (exp.f64 x) (exp.f64 (neg.f64 x))) < 9.99999999999999955e-7Initial program 8.4%
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%
Taylor expanded in x around 0 100.0%
unpow2100.0%
Simplified100.0%
Final simplification100.0%
(FPCore (x)
:precision binary64
(let* ((t_0 (* x (* x 0.3333333333333333)))
(t_1 (* t_0 t_0))
(t_2 (* 0.3333333333333333 (* x x)))
(t_3 (/ (* x t_2) 2.0)))
(if (<= x -5e+156)
t_3
(if (<= x -2.05e+77)
(/ (* x (/ (- t_1 4.0) (- t_2 2.0))) 2.0)
(if (<= x 2e+77)
(/ (* x (/ (+ (pow t_0 3.0) 8.0) (+ t_1 (- 4.0 (* 2.0 t_0))))) 2.0)
t_3)))))
double code(double x) {
double t_0 = x * (x * 0.3333333333333333);
double t_1 = t_0 * t_0;
double t_2 = 0.3333333333333333 * (x * x);
double t_3 = (x * t_2) / 2.0;
double tmp;
if (x <= -5e+156) {
tmp = t_3;
} else if (x <= -2.05e+77) {
tmp = (x * ((t_1 - 4.0) / (t_2 - 2.0))) / 2.0;
} else if (x <= 2e+77) {
tmp = (x * ((pow(t_0, 3.0) + 8.0) / (t_1 + (4.0 - (2.0 * t_0))))) / 2.0;
} else {
tmp = t_3;
}
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) :: t_3
real(8) :: tmp
t_0 = x * (x * 0.3333333333333333d0)
t_1 = t_0 * t_0
t_2 = 0.3333333333333333d0 * (x * x)
t_3 = (x * t_2) / 2.0d0
if (x <= (-5d+156)) then
tmp = t_3
else if (x <= (-2.05d+77)) then
tmp = (x * ((t_1 - 4.0d0) / (t_2 - 2.0d0))) / 2.0d0
else if (x <= 2d+77) then
tmp = (x * (((t_0 ** 3.0d0) + 8.0d0) / (t_1 + (4.0d0 - (2.0d0 * t_0))))) / 2.0d0
else
tmp = t_3
end if
code = tmp
end function
public static double code(double x) {
double t_0 = x * (x * 0.3333333333333333);
double t_1 = t_0 * t_0;
double t_2 = 0.3333333333333333 * (x * x);
double t_3 = (x * t_2) / 2.0;
double tmp;
if (x <= -5e+156) {
tmp = t_3;
} else if (x <= -2.05e+77) {
tmp = (x * ((t_1 - 4.0) / (t_2 - 2.0))) / 2.0;
} else if (x <= 2e+77) {
tmp = (x * ((Math.pow(t_0, 3.0) + 8.0) / (t_1 + (4.0 - (2.0 * t_0))))) / 2.0;
} else {
tmp = t_3;
}
return tmp;
}
def code(x): t_0 = x * (x * 0.3333333333333333) t_1 = t_0 * t_0 t_2 = 0.3333333333333333 * (x * x) t_3 = (x * t_2) / 2.0 tmp = 0 if x <= -5e+156: tmp = t_3 elif x <= -2.05e+77: tmp = (x * ((t_1 - 4.0) / (t_2 - 2.0))) / 2.0 elif x <= 2e+77: tmp = (x * ((math.pow(t_0, 3.0) + 8.0) / (t_1 + (4.0 - (2.0 * t_0))))) / 2.0 else: tmp = t_3 return tmp
function code(x) t_0 = Float64(x * Float64(x * 0.3333333333333333)) t_1 = Float64(t_0 * t_0) t_2 = Float64(0.3333333333333333 * Float64(x * x)) t_3 = Float64(Float64(x * t_2) / 2.0) tmp = 0.0 if (x <= -5e+156) tmp = t_3; elseif (x <= -2.05e+77) tmp = Float64(Float64(x * Float64(Float64(t_1 - 4.0) / Float64(t_2 - 2.0))) / 2.0); elseif (x <= 2e+77) tmp = Float64(Float64(x * Float64(Float64((t_0 ^ 3.0) + 8.0) / Float64(t_1 + Float64(4.0 - Float64(2.0 * t_0))))) / 2.0); else tmp = t_3; end return tmp end
function tmp_2 = code(x) t_0 = x * (x * 0.3333333333333333); t_1 = t_0 * t_0; t_2 = 0.3333333333333333 * (x * x); t_3 = (x * t_2) / 2.0; tmp = 0.0; if (x <= -5e+156) tmp = t_3; elseif (x <= -2.05e+77) tmp = (x * ((t_1 - 4.0) / (t_2 - 2.0))) / 2.0; elseif (x <= 2e+77) tmp = (x * (((t_0 ^ 3.0) + 8.0) / (t_1 + (4.0 - (2.0 * t_0))))) / 2.0; else tmp = t_3; end tmp_2 = tmp; end
code[x_] := Block[{t$95$0 = N[(x * N[(x * 0.3333333333333333), $MachinePrecision]), $MachinePrecision]}, Block[{t$95$1 = N[(t$95$0 * t$95$0), $MachinePrecision]}, Block[{t$95$2 = N[(0.3333333333333333 * N[(x * x), $MachinePrecision]), $MachinePrecision]}, Block[{t$95$3 = N[(N[(x * t$95$2), $MachinePrecision] / 2.0), $MachinePrecision]}, If[LessEqual[x, -5e+156], t$95$3, If[LessEqual[x, -2.05e+77], N[(N[(x * N[(N[(t$95$1 - 4.0), $MachinePrecision] / N[(t$95$2 - 2.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / 2.0), $MachinePrecision], If[LessEqual[x, 2e+77], N[(N[(x * N[(N[(N[Power[t$95$0, 3.0], $MachinePrecision] + 8.0), $MachinePrecision] / N[(t$95$1 + N[(4.0 - N[(2.0 * t$95$0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / 2.0), $MachinePrecision], t$95$3]]]]]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := x \cdot \left(x \cdot 0.3333333333333333\right)\\
t_1 := t_0 \cdot t_0\\
t_2 := 0.3333333333333333 \cdot \left(x \cdot x\right)\\
t_3 := \frac{x \cdot t_2}{2}\\
\mathbf{if}\;x \leq -5 \cdot 10^{+156}:\\
\;\;\;\;t_3\\
\mathbf{elif}\;x \leq -2.05 \cdot 10^{+77}:\\
\;\;\;\;\frac{x \cdot \frac{t_1 - 4}{t_2 - 2}}{2}\\
\mathbf{elif}\;x \leq 2 \cdot 10^{+77}:\\
\;\;\;\;\frac{x \cdot \frac{{t_0}^{3} + 8}{t_1 + \left(4 - 2 \cdot t_0\right)}}{2}\\
\mathbf{else}:\\
\;\;\;\;t_3\\
\end{array}
\end{array}
if x < -4.99999999999999992e156 or 1.99999999999999997e77 < x Initial program 100.0%
Taylor expanded in x around 0 98.9%
unpow398.9%
associate-*r*98.9%
distribute-rgt-out98.9%
*-commutative98.9%
+-commutative98.9%
associate-*l*98.9%
fma-def98.9%
Simplified98.9%
Taylor expanded in x around inf 98.9%
unpow298.9%
Simplified98.9%
if -4.99999999999999992e156 < x < -2.05e77Initial program 100.0%
Taylor expanded in x around 0 69.1%
unpow369.1%
associate-*r*69.1%
distribute-rgt-out69.1%
*-commutative69.1%
+-commutative69.1%
associate-*l*69.1%
fma-def69.1%
Simplified69.1%
fma-udef69.1%
flip-+100.0%
metadata-eval100.0%
Applied egg-rr100.0%
Taylor expanded in x around 0 100.0%
unpow269.1%
Simplified100.0%
if -2.05e77 < x < 1.99999999999999997e77Initial program 26.9%
Taylor expanded in x around 0 81.2%
unpow381.2%
associate-*r*81.2%
distribute-rgt-out81.2%
*-commutative81.2%
+-commutative81.2%
associate-*l*81.2%
fma-def81.2%
Simplified81.2%
fma-udef81.2%
flip3-+87.0%
metadata-eval87.0%
metadata-eval87.0%
Applied egg-rr87.0%
Final simplification91.4%
(FPCore (x)
:precision binary64
(let* ((t_0 (* x (* x 0.3333333333333333)))
(t_1 (* 0.3333333333333333 (* x x))))
(if (or (<= x -5e+156) (not (<= x 5e+99)))
(/ (* 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 <= -5e+156) || !(x <= 5e+99)) {
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 <= (-5d+156)) .or. (.not. (x <= 5d+99))) 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 <= -5e+156) || !(x <= 5e+99)) {
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 <= -5e+156) or not (x <= 5e+99): 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 <= -5e+156) || !(x <= 5e+99)) 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 <= -5e+156) || ~((x <= 5e+99))) 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, -5e+156], N[Not[LessEqual[x, 5e+99]], $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 -5 \cdot 10^{+156} \lor \neg \left(x \leq 5 \cdot 10^{+99}\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 < -4.99999999999999992e156 or 5.00000000000000008e99 < 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 -4.99999999999999992e156 < x < 5.00000000000000008e99Initial program 33.5%
Taylor expanded in x around 0 79.8%
unpow379.8%
associate-*r*79.8%
distribute-rgt-out79.8%
*-commutative79.8%
+-commutative79.8%
associate-*l*79.8%
fma-def79.8%
Simplified79.8%
fma-udef79.8%
flip-+82.9%
metadata-eval82.9%
Applied egg-rr82.9%
Taylor expanded in x around 0 82.9%
unpow279.8%
Simplified82.9%
Final simplification88.0%
(FPCore (x) :precision binary64 (if (or (<= x -2.5) (not (<= x 2.4))) (/ (* x (* 0.3333333333333333 (* x x))) 2.0) (/ (* x 2.0) 2.0)))
double code(double x) {
double tmp;
if ((x <= -2.5) || !(x <= 2.4)) {
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 <= 2.4d0))) 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 <= 2.4)) {
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 <= 2.4): 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 <= 2.4)) 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 <= 2.4))) 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, 2.4]], $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 2.4\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 2.39999999999999991 < 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 < 2.39999999999999991Initial program 9.8%
Taylor expanded in x around 0 98.7%
Final simplification85.7%
(FPCore (x) :precision binary64 (/ (/ x (/ 1.0 (+ 2.0 (* 0.3333333333333333 (* x x))))) 2.0))
double code(double x) {
return (x / (1.0 / (2.0 + (0.3333333333333333 * (x * x))))) / 2.0;
}
real(8) function code(x)
real(8), intent (in) :: x
code = (x / (1.0d0 / (2.0d0 + (0.3333333333333333d0 * (x * x))))) / 2.0d0
end function
public static double code(double x) {
return (x / (1.0 / (2.0 + (0.3333333333333333 * (x * x))))) / 2.0;
}
def code(x): return (x / (1.0 / (2.0 + (0.3333333333333333 * (x * x))))) / 2.0
function code(x) return Float64(Float64(x / Float64(1.0 / Float64(2.0 + Float64(0.3333333333333333 * Float64(x * x))))) / 2.0) end
function tmp = code(x) tmp = (x / (1.0 / (2.0 + (0.3333333333333333 * (x * x))))) / 2.0; end
code[x_] := N[(N[(x / N[(1.0 / N[(2.0 + N[(0.3333333333333333 * N[(x * x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / 2.0), $MachinePrecision]
\begin{array}{l}
\\
\frac{\frac{x}{\frac{1}{2 + 0.3333333333333333 \cdot \left(x \cdot x\right)}}}{2}
\end{array}
Initial program 53.5%
Taylor expanded in x around 0 85.9%
unpow385.9%
associate-*r*85.9%
distribute-rgt-out85.9%
*-commutative85.9%
+-commutative85.9%
associate-*l*85.9%
fma-def85.9%
Simplified85.9%
fma-udef85.9%
Applied egg-rr85.9%
flip-+62.2%
metadata-eval62.2%
clear-num62.2%
un-div-inv62.2%
clear-num62.2%
metadata-eval62.2%
flip-+85.9%
*-commutative85.9%
*-commutative85.9%
associate-*l*85.9%
fma-def85.9%
Applied egg-rr85.9%
fma-udef85.9%
Applied egg-rr85.9%
Final simplification85.9%
(FPCore (x) :precision binary64 (/ (* x (+ 2.0 (* 0.3333333333333333 (* x x)))) 2.0))
double code(double x) {
return (x * (2.0 + (0.3333333333333333 * (x * x)))) / 2.0;
}
real(8) function code(x)
real(8), intent (in) :: x
code = (x * (2.0d0 + (0.3333333333333333d0 * (x * x)))) / 2.0d0
end function
public static double code(double x) {
return (x * (2.0 + (0.3333333333333333 * (x * x)))) / 2.0;
}
def code(x): return (x * (2.0 + (0.3333333333333333 * (x * x)))) / 2.0
function code(x) return Float64(Float64(x * Float64(2.0 + Float64(0.3333333333333333 * Float64(x * x)))) / 2.0) end
function tmp = code(x) tmp = (x * (2.0 + (0.3333333333333333 * (x * x)))) / 2.0; end
code[x_] := N[(N[(x * N[(2.0 + N[(0.3333333333333333 * N[(x * x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / 2.0), $MachinePrecision]
\begin{array}{l}
\\
\frac{x \cdot \left(2 + 0.3333333333333333 \cdot \left(x \cdot x\right)\right)}{2}
\end{array}
Initial program 53.5%
Taylor expanded in x around 0 85.9%
unpow385.9%
associate-*r*85.9%
distribute-rgt-out85.9%
*-commutative85.9%
+-commutative85.9%
associate-*l*85.9%
fma-def85.9%
Simplified85.9%
fma-udef85.9%
Applied egg-rr85.9%
Taylor expanded in x around 0 85.9%
unpow285.9%
Simplified85.9%
Final simplification85.9%
(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 53.5%
Taylor expanded in x around 0 53.6%
Final simplification53.6%
(FPCore (x) :precision binary64 -1.0)
double code(double x) {
return -1.0;
}
real(8) function code(x)
real(8), intent (in) :: x
code = -1.0d0
end function
public static double code(double x) {
return -1.0;
}
def code(x): return -1.0
function code(x) return -1.0 end
function tmp = code(x) tmp = -1.0; end
code[x_] := -1.0
\begin{array}{l}
\\
-1
\end{array}
Initial program 53.5%
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 53.5%
Applied egg-rr3.7%
Final simplification3.7%
herbie shell --seed 2023229
(FPCore (x)
:name "Hyperbolic sine"
:precision binary64
(/ (- (exp x) (exp (- x))) 2.0))