
(FPCore (x) :precision binary64 (+ (- (exp x) 2.0) (exp (- x))))
double code(double x) {
return (exp(x) - 2.0) + exp(-x);
}
real(8) function code(x)
real(8), intent (in) :: x
code = (exp(x) - 2.0d0) + exp(-x)
end function
public static double code(double x) {
return (Math.exp(x) - 2.0) + Math.exp(-x);
}
def code(x): return (math.exp(x) - 2.0) + math.exp(-x)
function code(x) return Float64(Float64(exp(x) - 2.0) + exp(Float64(-x))) end
function tmp = code(x) tmp = (exp(x) - 2.0) + exp(-x); end
code[x_] := N[(N[(N[Exp[x], $MachinePrecision] - 2.0), $MachinePrecision] + N[Exp[(-x)], $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\left(e^{x} - 2\right) + e^{-x}
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 9 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x) :precision binary64 (+ (- (exp x) 2.0) (exp (- x))))
double code(double x) {
return (exp(x) - 2.0) + exp(-x);
}
real(8) function code(x)
real(8), intent (in) :: x
code = (exp(x) - 2.0d0) + exp(-x)
end function
public static double code(double x) {
return (Math.exp(x) - 2.0) + Math.exp(-x);
}
def code(x): return (math.exp(x) - 2.0) + math.exp(-x)
function code(x) return Float64(Float64(exp(x) - 2.0) + exp(Float64(-x))) end
function tmp = code(x) tmp = (exp(x) - 2.0) + exp(-x); end
code[x_] := N[(N[(N[Exp[x], $MachinePrecision] - 2.0), $MachinePrecision] + N[Exp[(-x)], $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\left(e^{x} - 2\right) + e^{-x}
\end{array}
(FPCore (x)
:precision binary64
(let* ((t_0 (* x (* x (* x x)))))
(*
(* x x)
(+
(/
(*
(* x x)
(+
0.006944444444444444
(*
(* (* x x) (+ 0.002777777777777778 (* x (* x 4.96031746031746e-5))))
(/
(* (* x x) (- 7.71604938271605e-6 (* t_0 2.460474930713026e-9)))
(- (* (* x x) 4.96031746031746e-5) 0.002777777777777778)))))
(-
0.08333333333333333
(/
(* x (* x (+ (* t_0 -2.460474930713026e-9) 7.71604938271605e-6)))
(+ 0.002777777777777778 (* (* x x) -4.96031746031746e-5)))))
1.0))))
double code(double x) {
double t_0 = x * (x * (x * x));
return (x * x) * ((((x * x) * (0.006944444444444444 + (((x * x) * (0.002777777777777778 + (x * (x * 4.96031746031746e-5)))) * (((x * x) * (7.71604938271605e-6 - (t_0 * 2.460474930713026e-9))) / (((x * x) * 4.96031746031746e-5) - 0.002777777777777778))))) / (0.08333333333333333 - ((x * (x * ((t_0 * -2.460474930713026e-9) + 7.71604938271605e-6))) / (0.002777777777777778 + ((x * x) * -4.96031746031746e-5))))) + 1.0);
}
real(8) function code(x)
real(8), intent (in) :: x
real(8) :: t_0
t_0 = x * (x * (x * x))
code = (x * x) * ((((x * x) * (0.006944444444444444d0 + (((x * x) * (0.002777777777777778d0 + (x * (x * 4.96031746031746d-5)))) * (((x * x) * (7.71604938271605d-6 - (t_0 * 2.460474930713026d-9))) / (((x * x) * 4.96031746031746d-5) - 0.002777777777777778d0))))) / (0.08333333333333333d0 - ((x * (x * ((t_0 * (-2.460474930713026d-9)) + 7.71604938271605d-6))) / (0.002777777777777778d0 + ((x * x) * (-4.96031746031746d-5)))))) + 1.0d0)
end function
public static double code(double x) {
double t_0 = x * (x * (x * x));
return (x * x) * ((((x * x) * (0.006944444444444444 + (((x * x) * (0.002777777777777778 + (x * (x * 4.96031746031746e-5)))) * (((x * x) * (7.71604938271605e-6 - (t_0 * 2.460474930713026e-9))) / (((x * x) * 4.96031746031746e-5) - 0.002777777777777778))))) / (0.08333333333333333 - ((x * (x * ((t_0 * -2.460474930713026e-9) + 7.71604938271605e-6))) / (0.002777777777777778 + ((x * x) * -4.96031746031746e-5))))) + 1.0);
}
def code(x): t_0 = x * (x * (x * x)) return (x * x) * ((((x * x) * (0.006944444444444444 + (((x * x) * (0.002777777777777778 + (x * (x * 4.96031746031746e-5)))) * (((x * x) * (7.71604938271605e-6 - (t_0 * 2.460474930713026e-9))) / (((x * x) * 4.96031746031746e-5) - 0.002777777777777778))))) / (0.08333333333333333 - ((x * (x * ((t_0 * -2.460474930713026e-9) + 7.71604938271605e-6))) / (0.002777777777777778 + ((x * x) * -4.96031746031746e-5))))) + 1.0)
function code(x) t_0 = Float64(x * Float64(x * Float64(x * x))) return Float64(Float64(x * x) * Float64(Float64(Float64(Float64(x * x) * Float64(0.006944444444444444 + Float64(Float64(Float64(x * x) * Float64(0.002777777777777778 + Float64(x * Float64(x * 4.96031746031746e-5)))) * Float64(Float64(Float64(x * x) * Float64(7.71604938271605e-6 - Float64(t_0 * 2.460474930713026e-9))) / Float64(Float64(Float64(x * x) * 4.96031746031746e-5) - 0.002777777777777778))))) / Float64(0.08333333333333333 - Float64(Float64(x * Float64(x * Float64(Float64(t_0 * -2.460474930713026e-9) + 7.71604938271605e-6))) / Float64(0.002777777777777778 + Float64(Float64(x * x) * -4.96031746031746e-5))))) + 1.0)) end
function tmp = code(x) t_0 = x * (x * (x * x)); tmp = (x * x) * ((((x * x) * (0.006944444444444444 + (((x * x) * (0.002777777777777778 + (x * (x * 4.96031746031746e-5)))) * (((x * x) * (7.71604938271605e-6 - (t_0 * 2.460474930713026e-9))) / (((x * x) * 4.96031746031746e-5) - 0.002777777777777778))))) / (0.08333333333333333 - ((x * (x * ((t_0 * -2.460474930713026e-9) + 7.71604938271605e-6))) / (0.002777777777777778 + ((x * x) * -4.96031746031746e-5))))) + 1.0); end
code[x_] := Block[{t$95$0 = N[(x * N[(x * N[(x * x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, N[(N[(x * x), $MachinePrecision] * N[(N[(N[(N[(x * x), $MachinePrecision] * N[(0.006944444444444444 + N[(N[(N[(x * x), $MachinePrecision] * N[(0.002777777777777778 + N[(x * N[(x * 4.96031746031746e-5), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * N[(N[(N[(x * x), $MachinePrecision] * N[(7.71604938271605e-6 - N[(t$95$0 * 2.460474930713026e-9), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / N[(N[(N[(x * x), $MachinePrecision] * 4.96031746031746e-5), $MachinePrecision] - 0.002777777777777778), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / N[(0.08333333333333333 - N[(N[(x * N[(x * N[(N[(t$95$0 * -2.460474930713026e-9), $MachinePrecision] + 7.71604938271605e-6), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / N[(0.002777777777777778 + N[(N[(x * x), $MachinePrecision] * -4.96031746031746e-5), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + 1.0), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := x \cdot \left(x \cdot \left(x \cdot x\right)\right)\\
\left(x \cdot x\right) \cdot \left(\frac{\left(x \cdot x\right) \cdot \left(0.006944444444444444 + \left(\left(x \cdot x\right) \cdot \left(0.002777777777777778 + x \cdot \left(x \cdot 4.96031746031746 \cdot 10^{-5}\right)\right)\right) \cdot \frac{\left(x \cdot x\right) \cdot \left(7.71604938271605 \cdot 10^{-6} - t\_0 \cdot 2.460474930713026 \cdot 10^{-9}\right)}{\left(x \cdot x\right) \cdot 4.96031746031746 \cdot 10^{-5} - 0.002777777777777778}\right)}{0.08333333333333333 - \frac{x \cdot \left(x \cdot \left(t\_0 \cdot -2.460474930713026 \cdot 10^{-9} + 7.71604938271605 \cdot 10^{-6}\right)\right)}{0.002777777777777778 + \left(x \cdot x\right) \cdot -4.96031746031746 \cdot 10^{-5}}} + 1\right)
\end{array}
\end{array}
Initial program 53.3%
associate-+l-N/A
sub-negN/A
+-lowering-+.f64N/A
exp-lowering-exp.f64N/A
sub-negN/A
+-commutativeN/A
distribute-neg-inN/A
remove-double-negN/A
+-lowering-+.f64N/A
exp-negN/A
/-lowering-/.f64N/A
exp-lowering-exp.f64N/A
metadata-eval53.3%
Simplified53.3%
Taylor expanded in x around 0
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-commutativeN/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f6499.2%
Simplified99.2%
*-commutativeN/A
flip-+N/A
associate-*l/N/A
/-lowering-/.f64N/A
Applied egg-rr99.2%
*-commutativeN/A
flip-+N/A
associate-*l/N/A
/-lowering-/.f64N/A
Applied egg-rr99.2%
distribute-rgt-inN/A
associate-*r*N/A
distribute-rgt-inN/A
flip-+N/A
associate-*r/N/A
metadata-evalN/A
swap-sqrN/A
associate-*r*N/A
metadata-evalN/A
*-commutativeN/A
/-lowering-/.f64N/A
Applied egg-rr99.2%
Final simplification99.2%
(FPCore (x)
:precision binary64
(let* ((t_0
(* (* x x) (+ 0.002777777777777778 (* x (* x 4.96031746031746e-5))))))
(*
(* x x)
(+
(/
(*
(* x x)
(+
0.006944444444444444
(*
t_0
(/
(*
(* x x)
(-
7.71604938271605e-6
(* (* x (* x (* x x))) 2.460474930713026e-9)))
(- (* (* x x) 4.96031746031746e-5) 0.002777777777777778)))))
(- 0.08333333333333333 t_0))
1.0))))
double code(double x) {
double t_0 = (x * x) * (0.002777777777777778 + (x * (x * 4.96031746031746e-5)));
return (x * x) * ((((x * x) * (0.006944444444444444 + (t_0 * (((x * x) * (7.71604938271605e-6 - ((x * (x * (x * x))) * 2.460474930713026e-9))) / (((x * x) * 4.96031746031746e-5) - 0.002777777777777778))))) / (0.08333333333333333 - t_0)) + 1.0);
}
real(8) function code(x)
real(8), intent (in) :: x
real(8) :: t_0
t_0 = (x * x) * (0.002777777777777778d0 + (x * (x * 4.96031746031746d-5)))
code = (x * x) * ((((x * x) * (0.006944444444444444d0 + (t_0 * (((x * x) * (7.71604938271605d-6 - ((x * (x * (x * x))) * 2.460474930713026d-9))) / (((x * x) * 4.96031746031746d-5) - 0.002777777777777778d0))))) / (0.08333333333333333d0 - t_0)) + 1.0d0)
end function
public static double code(double x) {
double t_0 = (x * x) * (0.002777777777777778 + (x * (x * 4.96031746031746e-5)));
return (x * x) * ((((x * x) * (0.006944444444444444 + (t_0 * (((x * x) * (7.71604938271605e-6 - ((x * (x * (x * x))) * 2.460474930713026e-9))) / (((x * x) * 4.96031746031746e-5) - 0.002777777777777778))))) / (0.08333333333333333 - t_0)) + 1.0);
}
def code(x): t_0 = (x * x) * (0.002777777777777778 + (x * (x * 4.96031746031746e-5))) return (x * x) * ((((x * x) * (0.006944444444444444 + (t_0 * (((x * x) * (7.71604938271605e-6 - ((x * (x * (x * x))) * 2.460474930713026e-9))) / (((x * x) * 4.96031746031746e-5) - 0.002777777777777778))))) / (0.08333333333333333 - t_0)) + 1.0)
function code(x) t_0 = Float64(Float64(x * x) * Float64(0.002777777777777778 + Float64(x * Float64(x * 4.96031746031746e-5)))) return Float64(Float64(x * x) * Float64(Float64(Float64(Float64(x * x) * Float64(0.006944444444444444 + Float64(t_0 * Float64(Float64(Float64(x * x) * Float64(7.71604938271605e-6 - Float64(Float64(x * Float64(x * Float64(x * x))) * 2.460474930713026e-9))) / Float64(Float64(Float64(x * x) * 4.96031746031746e-5) - 0.002777777777777778))))) / Float64(0.08333333333333333 - t_0)) + 1.0)) end
function tmp = code(x) t_0 = (x * x) * (0.002777777777777778 + (x * (x * 4.96031746031746e-5))); tmp = (x * x) * ((((x * x) * (0.006944444444444444 + (t_0 * (((x * x) * (7.71604938271605e-6 - ((x * (x * (x * x))) * 2.460474930713026e-9))) / (((x * x) * 4.96031746031746e-5) - 0.002777777777777778))))) / (0.08333333333333333 - t_0)) + 1.0); end
code[x_] := Block[{t$95$0 = N[(N[(x * x), $MachinePrecision] * N[(0.002777777777777778 + N[(x * N[(x * 4.96031746031746e-5), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, N[(N[(x * x), $MachinePrecision] * N[(N[(N[(N[(x * x), $MachinePrecision] * N[(0.006944444444444444 + N[(t$95$0 * N[(N[(N[(x * x), $MachinePrecision] * N[(7.71604938271605e-6 - N[(N[(x * N[(x * N[(x * x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * 2.460474930713026e-9), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / N[(N[(N[(x * x), $MachinePrecision] * 4.96031746031746e-5), $MachinePrecision] - 0.002777777777777778), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / N[(0.08333333333333333 - t$95$0), $MachinePrecision]), $MachinePrecision] + 1.0), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := \left(x \cdot x\right) \cdot \left(0.002777777777777778 + x \cdot \left(x \cdot 4.96031746031746 \cdot 10^{-5}\right)\right)\\
\left(x \cdot x\right) \cdot \left(\frac{\left(x \cdot x\right) \cdot \left(0.006944444444444444 + t\_0 \cdot \frac{\left(x \cdot x\right) \cdot \left(7.71604938271605 \cdot 10^{-6} - \left(x \cdot \left(x \cdot \left(x \cdot x\right)\right)\right) \cdot 2.460474930713026 \cdot 10^{-9}\right)}{\left(x \cdot x\right) \cdot 4.96031746031746 \cdot 10^{-5} - 0.002777777777777778}\right)}{0.08333333333333333 - t\_0} + 1\right)
\end{array}
\end{array}
Initial program 53.3%
associate-+l-N/A
sub-negN/A
+-lowering-+.f64N/A
exp-lowering-exp.f64N/A
sub-negN/A
+-commutativeN/A
distribute-neg-inN/A
remove-double-negN/A
+-lowering-+.f64N/A
exp-negN/A
/-lowering-/.f64N/A
exp-lowering-exp.f64N/A
metadata-eval53.3%
Simplified53.3%
Taylor expanded in x around 0
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-commutativeN/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f6499.2%
Simplified99.2%
*-commutativeN/A
flip-+N/A
associate-*l/N/A
/-lowering-/.f64N/A
Applied egg-rr99.2%
*-commutativeN/A
flip-+N/A
associate-*l/N/A
/-lowering-/.f64N/A
Applied egg-rr99.2%
Final simplification99.2%
(FPCore (x)
:precision binary64
(*
(* x x)
(+
(*
x
(*
x
(+
(* (* x x) (+ 0.002777777777777778 (* x (* x 4.96031746031746e-5))))
0.08333333333333333)))
1.0)))
double code(double x) {
return (x * x) * ((x * (x * (((x * x) * (0.002777777777777778 + (x * (x * 4.96031746031746e-5)))) + 0.08333333333333333))) + 1.0);
}
real(8) function code(x)
real(8), intent (in) :: x
code = (x * x) * ((x * (x * (((x * x) * (0.002777777777777778d0 + (x * (x * 4.96031746031746d-5)))) + 0.08333333333333333d0))) + 1.0d0)
end function
public static double code(double x) {
return (x * x) * ((x * (x * (((x * x) * (0.002777777777777778 + (x * (x * 4.96031746031746e-5)))) + 0.08333333333333333))) + 1.0);
}
def code(x): return (x * x) * ((x * (x * (((x * x) * (0.002777777777777778 + (x * (x * 4.96031746031746e-5)))) + 0.08333333333333333))) + 1.0)
function code(x) return Float64(Float64(x * x) * Float64(Float64(x * Float64(x * Float64(Float64(Float64(x * x) * Float64(0.002777777777777778 + Float64(x * Float64(x * 4.96031746031746e-5)))) + 0.08333333333333333))) + 1.0)) end
function tmp = code(x) tmp = (x * x) * ((x * (x * (((x * x) * (0.002777777777777778 + (x * (x * 4.96031746031746e-5)))) + 0.08333333333333333))) + 1.0); end
code[x_] := N[(N[(x * x), $MachinePrecision] * N[(N[(x * N[(x * N[(N[(N[(x * x), $MachinePrecision] * N[(0.002777777777777778 + N[(x * N[(x * 4.96031746031746e-5), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + 0.08333333333333333), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + 1.0), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\left(x \cdot x\right) \cdot \left(x \cdot \left(x \cdot \left(\left(x \cdot x\right) \cdot \left(0.002777777777777778 + x \cdot \left(x \cdot 4.96031746031746 \cdot 10^{-5}\right)\right) + 0.08333333333333333\right)\right) + 1\right)
\end{array}
Initial program 53.3%
associate-+l-N/A
sub-negN/A
+-lowering-+.f64N/A
exp-lowering-exp.f64N/A
sub-negN/A
+-commutativeN/A
distribute-neg-inN/A
remove-double-negN/A
+-lowering-+.f64N/A
exp-negN/A
/-lowering-/.f64N/A
exp-lowering-exp.f64N/A
metadata-eval53.3%
Simplified53.3%
Taylor expanded in x around 0
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-commutativeN/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f6499.2%
Simplified99.2%
*-commutativeN/A
*-lowering-*.f64N/A
Applied egg-rr99.2%
Final simplification99.2%
(FPCore (x)
:precision binary64
(*
(* x x)
(+
(*
(* x x)
(+
0.08333333333333333
(* (* x x) (+ 0.002777777777777778 (* (* x x) 4.96031746031746e-5)))))
1.0)))
double code(double x) {
return (x * x) * (((x * x) * (0.08333333333333333 + ((x * x) * (0.002777777777777778 + ((x * x) * 4.96031746031746e-5))))) + 1.0);
}
real(8) function code(x)
real(8), intent (in) :: x
code = (x * x) * (((x * x) * (0.08333333333333333d0 + ((x * x) * (0.002777777777777778d0 + ((x * x) * 4.96031746031746d-5))))) + 1.0d0)
end function
public static double code(double x) {
return (x * x) * (((x * x) * (0.08333333333333333 + ((x * x) * (0.002777777777777778 + ((x * x) * 4.96031746031746e-5))))) + 1.0);
}
def code(x): return (x * x) * (((x * x) * (0.08333333333333333 + ((x * x) * (0.002777777777777778 + ((x * x) * 4.96031746031746e-5))))) + 1.0)
function code(x) return Float64(Float64(x * x) * Float64(Float64(Float64(x * x) * Float64(0.08333333333333333 + Float64(Float64(x * x) * Float64(0.002777777777777778 + Float64(Float64(x * x) * 4.96031746031746e-5))))) + 1.0)) end
function tmp = code(x) tmp = (x * x) * (((x * x) * (0.08333333333333333 + ((x * x) * (0.002777777777777778 + ((x * x) * 4.96031746031746e-5))))) + 1.0); end
code[x_] := N[(N[(x * x), $MachinePrecision] * N[(N[(N[(x * x), $MachinePrecision] * N[(0.08333333333333333 + N[(N[(x * x), $MachinePrecision] * N[(0.002777777777777778 + N[(N[(x * x), $MachinePrecision] * 4.96031746031746e-5), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + 1.0), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\left(x \cdot x\right) \cdot \left(\left(x \cdot x\right) \cdot \left(0.08333333333333333 + \left(x \cdot x\right) \cdot \left(0.002777777777777778 + \left(x \cdot x\right) \cdot 4.96031746031746 \cdot 10^{-5}\right)\right) + 1\right)
\end{array}
Initial program 53.3%
associate-+l-N/A
sub-negN/A
+-lowering-+.f64N/A
exp-lowering-exp.f64N/A
sub-negN/A
+-commutativeN/A
distribute-neg-inN/A
remove-double-negN/A
+-lowering-+.f64N/A
exp-negN/A
/-lowering-/.f64N/A
exp-lowering-exp.f64N/A
metadata-eval53.3%
Simplified53.3%
Taylor expanded in x around 0
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-commutativeN/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f6499.2%
Simplified99.2%
Final simplification99.2%
(FPCore (x) :precision binary64 (* (* x x) (+ (* (* x x) (+ 0.08333333333333333 (* (* x x) 0.002777777777777778))) 1.0)))
double code(double x) {
return (x * x) * (((x * x) * (0.08333333333333333 + ((x * x) * 0.002777777777777778))) + 1.0);
}
real(8) function code(x)
real(8), intent (in) :: x
code = (x * x) * (((x * x) * (0.08333333333333333d0 + ((x * x) * 0.002777777777777778d0))) + 1.0d0)
end function
public static double code(double x) {
return (x * x) * (((x * x) * (0.08333333333333333 + ((x * x) * 0.002777777777777778))) + 1.0);
}
def code(x): return (x * x) * (((x * x) * (0.08333333333333333 + ((x * x) * 0.002777777777777778))) + 1.0)
function code(x) return Float64(Float64(x * x) * Float64(Float64(Float64(x * x) * Float64(0.08333333333333333 + Float64(Float64(x * x) * 0.002777777777777778))) + 1.0)) end
function tmp = code(x) tmp = (x * x) * (((x * x) * (0.08333333333333333 + ((x * x) * 0.002777777777777778))) + 1.0); end
code[x_] := N[(N[(x * x), $MachinePrecision] * N[(N[(N[(x * x), $MachinePrecision] * N[(0.08333333333333333 + N[(N[(x * x), $MachinePrecision] * 0.002777777777777778), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + 1.0), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\left(x \cdot x\right) \cdot \left(\left(x \cdot x\right) \cdot \left(0.08333333333333333 + \left(x \cdot x\right) \cdot 0.002777777777777778\right) + 1\right)
\end{array}
Initial program 53.3%
associate-+l-N/A
sub-negN/A
+-lowering-+.f64N/A
exp-lowering-exp.f64N/A
sub-negN/A
+-commutativeN/A
distribute-neg-inN/A
remove-double-negN/A
+-lowering-+.f64N/A
exp-negN/A
/-lowering-/.f64N/A
exp-lowering-exp.f64N/A
metadata-eval53.3%
Simplified53.3%
Taylor expanded in x around 0
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-commutativeN/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f6499.2%
Simplified99.2%
Final simplification99.2%
(FPCore (x) :precision binary64 (+ (* x x) (* x (* x (* (* x x) 0.08333333333333333)))))
double code(double x) {
return (x * x) + (x * (x * ((x * x) * 0.08333333333333333)));
}
real(8) function code(x)
real(8), intent (in) :: x
code = (x * x) + (x * (x * ((x * x) * 0.08333333333333333d0)))
end function
public static double code(double x) {
return (x * x) + (x * (x * ((x * x) * 0.08333333333333333)));
}
def code(x): return (x * x) + (x * (x * ((x * x) * 0.08333333333333333)))
function code(x) return Float64(Float64(x * x) + Float64(x * Float64(x * Float64(Float64(x * x) * 0.08333333333333333)))) end
function tmp = code(x) tmp = (x * x) + (x * (x * ((x * x) * 0.08333333333333333))); end
code[x_] := N[(N[(x * x), $MachinePrecision] + N[(x * N[(x * N[(N[(x * x), $MachinePrecision] * 0.08333333333333333), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x \cdot x + x \cdot \left(x \cdot \left(\left(x \cdot x\right) \cdot 0.08333333333333333\right)\right)
\end{array}
Initial program 53.3%
associate-+l-N/A
sub-negN/A
+-lowering-+.f64N/A
exp-lowering-exp.f64N/A
sub-negN/A
+-commutativeN/A
distribute-neg-inN/A
remove-double-negN/A
+-lowering-+.f64N/A
exp-negN/A
/-lowering-/.f64N/A
exp-lowering-exp.f64N/A
metadata-eval53.3%
Simplified53.3%
Taylor expanded in x around 0
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-commutativeN/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f6499.1%
Simplified99.1%
+-commutativeN/A
distribute-lft-inN/A
*-rgt-identityN/A
+-lowering-+.f64N/A
associate-*l*N/A
*-lowering-*.f64N/A
*-lowering-*.f64N/A
*-lowering-*.f64N/A
*-lowering-*.f64N/A
*-lowering-*.f6499.1%
Applied egg-rr99.1%
Final simplification99.1%
(FPCore (x) :precision binary64 (* (* x x) (+ (* x (* x 0.08333333333333333)) 1.0)))
double code(double x) {
return (x * x) * ((x * (x * 0.08333333333333333)) + 1.0);
}
real(8) function code(x)
real(8), intent (in) :: x
code = (x * x) * ((x * (x * 0.08333333333333333d0)) + 1.0d0)
end function
public static double code(double x) {
return (x * x) * ((x * (x * 0.08333333333333333)) + 1.0);
}
def code(x): return (x * x) * ((x * (x * 0.08333333333333333)) + 1.0)
function code(x) return Float64(Float64(x * x) * Float64(Float64(x * Float64(x * 0.08333333333333333)) + 1.0)) end
function tmp = code(x) tmp = (x * x) * ((x * (x * 0.08333333333333333)) + 1.0); end
code[x_] := N[(N[(x * x), $MachinePrecision] * N[(N[(x * N[(x * 0.08333333333333333), $MachinePrecision]), $MachinePrecision] + 1.0), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\left(x \cdot x\right) \cdot \left(x \cdot \left(x \cdot 0.08333333333333333\right) + 1\right)
\end{array}
Initial program 53.3%
associate-+l-N/A
sub-negN/A
+-lowering-+.f64N/A
exp-lowering-exp.f64N/A
sub-negN/A
+-commutativeN/A
distribute-neg-inN/A
remove-double-negN/A
+-lowering-+.f64N/A
exp-negN/A
/-lowering-/.f64N/A
exp-lowering-exp.f64N/A
metadata-eval53.3%
Simplified53.3%
Taylor expanded in x around 0
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-commutativeN/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f6499.1%
Simplified99.1%
associate-*l*N/A
*-commutativeN/A
*-lowering-*.f64N/A
*-lowering-*.f6499.1%
Applied egg-rr99.1%
Final simplification99.1%
(FPCore (x) :precision binary64 (* x x))
double code(double x) {
return x * x;
}
real(8) function code(x)
real(8), intent (in) :: x
code = x * x
end function
public static double code(double x) {
return x * x;
}
def code(x): return x * x
function code(x) return Float64(x * x) end
function tmp = code(x) tmp = x * x; end
code[x_] := N[(x * x), $MachinePrecision]
\begin{array}{l}
\\
x \cdot x
\end{array}
Initial program 53.3%
associate-+l-N/A
sub-negN/A
+-lowering-+.f64N/A
exp-lowering-exp.f64N/A
sub-negN/A
+-commutativeN/A
distribute-neg-inN/A
remove-double-negN/A
+-lowering-+.f64N/A
exp-negN/A
/-lowering-/.f64N/A
exp-lowering-exp.f64N/A
metadata-eval53.3%
Simplified53.3%
Taylor expanded in x around 0
unpow2N/A
*-lowering-*.f6498.8%
Simplified98.8%
(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 53.3%
associate-+l-N/A
sub-negN/A
+-lowering-+.f64N/A
exp-lowering-exp.f64N/A
sub-negN/A
+-commutativeN/A
distribute-neg-inN/A
remove-double-negN/A
+-lowering-+.f64N/A
exp-negN/A
/-lowering-/.f64N/A
exp-lowering-exp.f64N/A
metadata-eval53.3%
Simplified53.3%
Taylor expanded in x around 0
Simplified51.4%
Taylor expanded in x around 0
Simplified5.8%
(FPCore (x) :precision binary64 (let* ((t_0 (sinh (/ x 2.0)))) (* 4.0 (* t_0 t_0))))
double code(double x) {
double t_0 = sinh((x / 2.0));
return 4.0 * (t_0 * t_0);
}
real(8) function code(x)
real(8), intent (in) :: x
real(8) :: t_0
t_0 = sinh((x / 2.0d0))
code = 4.0d0 * (t_0 * t_0)
end function
public static double code(double x) {
double t_0 = Math.sinh((x / 2.0));
return 4.0 * (t_0 * t_0);
}
def code(x): t_0 = math.sinh((x / 2.0)) return 4.0 * (t_0 * t_0)
function code(x) t_0 = sinh(Float64(x / 2.0)) return Float64(4.0 * Float64(t_0 * t_0)) end
function tmp = code(x) t_0 = sinh((x / 2.0)); tmp = 4.0 * (t_0 * t_0); end
code[x_] := Block[{t$95$0 = N[Sinh[N[(x / 2.0), $MachinePrecision]], $MachinePrecision]}, N[(4.0 * N[(t$95$0 * t$95$0), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := \sinh \left(\frac{x}{2}\right)\\
4 \cdot \left(t\_0 \cdot t\_0\right)
\end{array}
\end{array}
herbie shell --seed 2024141
(FPCore (x)
:name "exp2 (problem 3.3.7)"
:precision binary64
:pre (<= (fabs x) 710.0)
:alt
(! :herbie-platform default (* 4 (* (sinh (/ x 2)) (sinh (/ x 2)))))
(+ (- (exp x) 2.0) (exp (- x))))