
(FPCore (x) :precision binary64 (log (/ (sinh x) x)))
double code(double x) {
return log((sinh(x) / x));
}
real(8) function code(x)
real(8), intent (in) :: x
code = log((sinh(x) / x))
end function
public static double code(double x) {
return Math.log((Math.sinh(x) / x));
}
def code(x): return math.log((math.sinh(x) / x))
function code(x) return log(Float64(sinh(x) / x)) end
function tmp = code(x) tmp = log((sinh(x) / x)); end
code[x_] := N[Log[N[(N[Sinh[x], $MachinePrecision] / x), $MachinePrecision]], $MachinePrecision]
\begin{array}{l}
\\
\log \left(\frac{\sinh x}{x}\right)
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 10 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x) :precision binary64 (log (/ (sinh x) x)))
double code(double x) {
return log((sinh(x) / x));
}
real(8) function code(x)
real(8), intent (in) :: x
code = log((sinh(x) / x))
end function
public static double code(double x) {
return Math.log((Math.sinh(x) / x));
}
def code(x): return math.log((math.sinh(x) / x))
function code(x) return log(Float64(sinh(x) / x)) end
function tmp = code(x) tmp = log((sinh(x) / x)); end
code[x_] := N[Log[N[(N[Sinh[x], $MachinePrecision] / x), $MachinePrecision]], $MachinePrecision]
\begin{array}{l}
\\
\log \left(\frac{\sinh x}{x}\right)
\end{array}
(FPCore (x)
:precision binary64
(*
x
(/
(*
x
(+
0.027777777777777776
(*
(* x x)
(* (* x x) (+ -3.08641975308642e-5 (* x (* x 3.919263178522438e-6)))))))
(-
0.16666666666666666
(*
x
(*
x
(+
-0.005555555555555556
(*
(* x x)
(+ 0.0003527336860670194 (* x (* x -2.6455026455026456e-5)))))))))))
double code(double x) {
return x * ((x * (0.027777777777777776 + ((x * x) * ((x * x) * (-3.08641975308642e-5 + (x * (x * 3.919263178522438e-6))))))) / (0.16666666666666666 - (x * (x * (-0.005555555555555556 + ((x * x) * (0.0003527336860670194 + (x * (x * -2.6455026455026456e-5)))))))));
}
real(8) function code(x)
real(8), intent (in) :: x
code = x * ((x * (0.027777777777777776d0 + ((x * x) * ((x * x) * ((-3.08641975308642d-5) + (x * (x * 3.919263178522438d-6))))))) / (0.16666666666666666d0 - (x * (x * ((-0.005555555555555556d0) + ((x * x) * (0.0003527336860670194d0 + (x * (x * (-2.6455026455026456d-5))))))))))
end function
public static double code(double x) {
return x * ((x * (0.027777777777777776 + ((x * x) * ((x * x) * (-3.08641975308642e-5 + (x * (x * 3.919263178522438e-6))))))) / (0.16666666666666666 - (x * (x * (-0.005555555555555556 + ((x * x) * (0.0003527336860670194 + (x * (x * -2.6455026455026456e-5)))))))));
}
def code(x): return x * ((x * (0.027777777777777776 + ((x * x) * ((x * x) * (-3.08641975308642e-5 + (x * (x * 3.919263178522438e-6))))))) / (0.16666666666666666 - (x * (x * (-0.005555555555555556 + ((x * x) * (0.0003527336860670194 + (x * (x * -2.6455026455026456e-5)))))))))
function code(x) return Float64(x * Float64(Float64(x * Float64(0.027777777777777776 + Float64(Float64(x * x) * Float64(Float64(x * x) * Float64(-3.08641975308642e-5 + Float64(x * Float64(x * 3.919263178522438e-6))))))) / Float64(0.16666666666666666 - Float64(x * Float64(x * Float64(-0.005555555555555556 + Float64(Float64(x * x) * Float64(0.0003527336860670194 + Float64(x * Float64(x * -2.6455026455026456e-5)))))))))) end
function tmp = code(x) tmp = x * ((x * (0.027777777777777776 + ((x * x) * ((x * x) * (-3.08641975308642e-5 + (x * (x * 3.919263178522438e-6))))))) / (0.16666666666666666 - (x * (x * (-0.005555555555555556 + ((x * x) * (0.0003527336860670194 + (x * (x * -2.6455026455026456e-5))))))))); end
code[x_] := N[(x * N[(N[(x * N[(0.027777777777777776 + N[(N[(x * x), $MachinePrecision] * N[(N[(x * x), $MachinePrecision] * N[(-3.08641975308642e-5 + N[(x * N[(x * 3.919263178522438e-6), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / N[(0.16666666666666666 - N[(x * N[(x * N[(-0.005555555555555556 + N[(N[(x * x), $MachinePrecision] * N[(0.0003527336860670194 + N[(x * N[(x * -2.6455026455026456e-5), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x \cdot \frac{x \cdot \left(0.027777777777777776 + \left(x \cdot x\right) \cdot \left(\left(x \cdot x\right) \cdot \left(-3.08641975308642 \cdot 10^{-5} + x \cdot \left(x \cdot 3.919263178522438 \cdot 10^{-6}\right)\right)\right)\right)}{0.16666666666666666 - x \cdot \left(x \cdot \left(-0.005555555555555556 + \left(x \cdot x\right) \cdot \left(0.0003527336860670194 + x \cdot \left(x \cdot -2.6455026455026456 \cdot 10^{-5}\right)\right)\right)\right)}
\end{array}
Initial program 53.2%
Taylor expanded in x around 0
unpow2N/A
associate-*l*N/A
*-lowering-*.f64N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
sub-negN/A
metadata-evalN/A
+-commutativeN/A
+-lowering-+.f64N/A
unpow2N/A
associate-*l*N/A
*-lowering-*.f64N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
Simplified95.9%
associate-*r*N/A
flip-+N/A
associate-*r/N/A
/-lowering-/.f64N/A
Applied egg-rr95.8%
Taylor expanded in x around 0
unpow2N/A
associate-*l*N/A
*-lowering-*.f64N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-commutativeN/A
metadata-evalN/A
pow-sqrN/A
*-lowering-*.f64N/A
sub-negN/A
metadata-evalN/A
+-commutativeN/A
+-lowering-+.f64N/A
*-commutativeN/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
unpow2N/A
associate-*l*N/A
unpow2N/A
cube-multN/A
*-lowering-*.f64N/A
Simplified96.3%
associate-/l*N/A
*-commutativeN/A
*-lowering-*.f64N/A
Applied egg-rr96.3%
Final simplification96.3%
(FPCore (x)
:precision binary64
(*
(*
x
(+
0.027777777777777776
(*
(* x x)
(* (* x x) (+ -3.08641975308642e-5 (* x (* x 3.919263178522438e-6)))))))
(/
x
(-
0.16666666666666666
(*
x
(*
x
(+
-0.005555555555555556
(*
(* x x)
(+ 0.0003527336860670194 (* x (* x -2.6455026455026456e-5)))))))))))
double code(double x) {
return (x * (0.027777777777777776 + ((x * x) * ((x * x) * (-3.08641975308642e-5 + (x * (x * 3.919263178522438e-6))))))) * (x / (0.16666666666666666 - (x * (x * (-0.005555555555555556 + ((x * x) * (0.0003527336860670194 + (x * (x * -2.6455026455026456e-5)))))))));
}
real(8) function code(x)
real(8), intent (in) :: x
code = (x * (0.027777777777777776d0 + ((x * x) * ((x * x) * ((-3.08641975308642d-5) + (x * (x * 3.919263178522438d-6))))))) * (x / (0.16666666666666666d0 - (x * (x * ((-0.005555555555555556d0) + ((x * x) * (0.0003527336860670194d0 + (x * (x * (-2.6455026455026456d-5))))))))))
end function
public static double code(double x) {
return (x * (0.027777777777777776 + ((x * x) * ((x * x) * (-3.08641975308642e-5 + (x * (x * 3.919263178522438e-6))))))) * (x / (0.16666666666666666 - (x * (x * (-0.005555555555555556 + ((x * x) * (0.0003527336860670194 + (x * (x * -2.6455026455026456e-5)))))))));
}
def code(x): return (x * (0.027777777777777776 + ((x * x) * ((x * x) * (-3.08641975308642e-5 + (x * (x * 3.919263178522438e-6))))))) * (x / (0.16666666666666666 - (x * (x * (-0.005555555555555556 + ((x * x) * (0.0003527336860670194 + (x * (x * -2.6455026455026456e-5)))))))))
function code(x) return Float64(Float64(x * Float64(0.027777777777777776 + Float64(Float64(x * x) * Float64(Float64(x * x) * Float64(-3.08641975308642e-5 + Float64(x * Float64(x * 3.919263178522438e-6))))))) * Float64(x / Float64(0.16666666666666666 - Float64(x * Float64(x * Float64(-0.005555555555555556 + Float64(Float64(x * x) * Float64(0.0003527336860670194 + Float64(x * Float64(x * -2.6455026455026456e-5)))))))))) end
function tmp = code(x) tmp = (x * (0.027777777777777776 + ((x * x) * ((x * x) * (-3.08641975308642e-5 + (x * (x * 3.919263178522438e-6))))))) * (x / (0.16666666666666666 - (x * (x * (-0.005555555555555556 + ((x * x) * (0.0003527336860670194 + (x * (x * -2.6455026455026456e-5))))))))); end
code[x_] := N[(N[(x * N[(0.027777777777777776 + N[(N[(x * x), $MachinePrecision] * N[(N[(x * x), $MachinePrecision] * N[(-3.08641975308642e-5 + N[(x * N[(x * 3.919263178522438e-6), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * N[(x / N[(0.16666666666666666 - N[(x * N[(x * N[(-0.005555555555555556 + N[(N[(x * x), $MachinePrecision] * N[(0.0003527336860670194 + N[(x * N[(x * -2.6455026455026456e-5), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\left(x \cdot \left(0.027777777777777776 + \left(x \cdot x\right) \cdot \left(\left(x \cdot x\right) \cdot \left(-3.08641975308642 \cdot 10^{-5} + x \cdot \left(x \cdot 3.919263178522438 \cdot 10^{-6}\right)\right)\right)\right)\right) \cdot \frac{x}{0.16666666666666666 - x \cdot \left(x \cdot \left(-0.005555555555555556 + \left(x \cdot x\right) \cdot \left(0.0003527336860670194 + x \cdot \left(x \cdot -2.6455026455026456 \cdot 10^{-5}\right)\right)\right)\right)}
\end{array}
Initial program 53.2%
Taylor expanded in x around 0
unpow2N/A
associate-*l*N/A
*-lowering-*.f64N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
sub-negN/A
metadata-evalN/A
+-commutativeN/A
+-lowering-+.f64N/A
unpow2N/A
associate-*l*N/A
*-lowering-*.f64N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
Simplified95.9%
associate-*r*N/A
flip-+N/A
associate-*r/N/A
/-lowering-/.f64N/A
Applied egg-rr95.8%
Taylor expanded in x around 0
unpow2N/A
associate-*l*N/A
*-lowering-*.f64N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-commutativeN/A
metadata-evalN/A
pow-sqrN/A
*-lowering-*.f64N/A
sub-negN/A
metadata-evalN/A
+-commutativeN/A
+-lowering-+.f64N/A
*-commutativeN/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
unpow2N/A
associate-*l*N/A
unpow2N/A
cube-multN/A
*-lowering-*.f64N/A
Simplified96.3%
*-commutativeN/A
associate-/l*N/A
*-lowering-*.f64N/A
Applied egg-rr96.3%
(FPCore (x)
:precision binary64
(+
(*
(* x x)
(*
x
(*
x
(+
-0.005555555555555556
(*
x
(* x (+ 0.0003527336860670194 (* (* x x) -2.6455026455026456e-5))))))))
(* (* x x) 0.16666666666666666)))
double code(double x) {
return ((x * x) * (x * (x * (-0.005555555555555556 + (x * (x * (0.0003527336860670194 + ((x * x) * -2.6455026455026456e-5)))))))) + ((x * x) * 0.16666666666666666);
}
real(8) function code(x)
real(8), intent (in) :: x
code = ((x * x) * (x * (x * ((-0.005555555555555556d0) + (x * (x * (0.0003527336860670194d0 + ((x * x) * (-2.6455026455026456d-5))))))))) + ((x * x) * 0.16666666666666666d0)
end function
public static double code(double x) {
return ((x * x) * (x * (x * (-0.005555555555555556 + (x * (x * (0.0003527336860670194 + ((x * x) * -2.6455026455026456e-5)))))))) + ((x * x) * 0.16666666666666666);
}
def code(x): return ((x * x) * (x * (x * (-0.005555555555555556 + (x * (x * (0.0003527336860670194 + ((x * x) * -2.6455026455026456e-5)))))))) + ((x * x) * 0.16666666666666666)
function code(x) return Float64(Float64(Float64(x * x) * Float64(x * Float64(x * Float64(-0.005555555555555556 + Float64(x * Float64(x * Float64(0.0003527336860670194 + Float64(Float64(x * x) * -2.6455026455026456e-5)))))))) + Float64(Float64(x * x) * 0.16666666666666666)) end
function tmp = code(x) tmp = ((x * x) * (x * (x * (-0.005555555555555556 + (x * (x * (0.0003527336860670194 + ((x * x) * -2.6455026455026456e-5)))))))) + ((x * x) * 0.16666666666666666); end
code[x_] := N[(N[(N[(x * x), $MachinePrecision] * N[(x * N[(x * N[(-0.005555555555555556 + N[(x * N[(x * N[(0.0003527336860670194 + N[(N[(x * x), $MachinePrecision] * -2.6455026455026456e-5), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(N[(x * x), $MachinePrecision] * 0.16666666666666666), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\left(x \cdot x\right) \cdot \left(x \cdot \left(x \cdot \left(-0.005555555555555556 + x \cdot \left(x \cdot \left(0.0003527336860670194 + \left(x \cdot x\right) \cdot -2.6455026455026456 \cdot 10^{-5}\right)\right)\right)\right)\right) + \left(x \cdot x\right) \cdot 0.16666666666666666
\end{array}
Initial program 53.2%
Taylor expanded in x around 0
unpow2N/A
associate-*l*N/A
*-lowering-*.f64N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
sub-negN/A
metadata-evalN/A
+-commutativeN/A
+-lowering-+.f64N/A
unpow2N/A
associate-*l*N/A
*-lowering-*.f64N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
Simplified95.9%
associate-*r*N/A
+-commutativeN/A
distribute-rgt-inN/A
+-lowering-+.f64N/A
Applied egg-rr95.9%
Final simplification95.9%
(FPCore (x)
:precision binary64
(*
x
(*
x
(+
0.16666666666666666
(*
(* x x)
(+
-0.005555555555555556
(*
x
(*
x
(+ 0.0003527336860670194 (* (* x x) -2.6455026455026456e-5))))))))))
double code(double x) {
return x * (x * (0.16666666666666666 + ((x * x) * (-0.005555555555555556 + (x * (x * (0.0003527336860670194 + ((x * x) * -2.6455026455026456e-5))))))));
}
real(8) function code(x)
real(8), intent (in) :: x
code = x * (x * (0.16666666666666666d0 + ((x * x) * ((-0.005555555555555556d0) + (x * (x * (0.0003527336860670194d0 + ((x * x) * (-2.6455026455026456d-5)))))))))
end function
public static double code(double x) {
return x * (x * (0.16666666666666666 + ((x * x) * (-0.005555555555555556 + (x * (x * (0.0003527336860670194 + ((x * x) * -2.6455026455026456e-5))))))));
}
def code(x): return x * (x * (0.16666666666666666 + ((x * x) * (-0.005555555555555556 + (x * (x * (0.0003527336860670194 + ((x * x) * -2.6455026455026456e-5))))))))
function code(x) return Float64(x * Float64(x * Float64(0.16666666666666666 + Float64(Float64(x * x) * Float64(-0.005555555555555556 + Float64(x * Float64(x * Float64(0.0003527336860670194 + Float64(Float64(x * x) * -2.6455026455026456e-5))))))))) end
function tmp = code(x) tmp = x * (x * (0.16666666666666666 + ((x * x) * (-0.005555555555555556 + (x * (x * (0.0003527336860670194 + ((x * x) * -2.6455026455026456e-5)))))))); end
code[x_] := N[(x * N[(x * N[(0.16666666666666666 + N[(N[(x * x), $MachinePrecision] * N[(-0.005555555555555556 + N[(x * N[(x * N[(0.0003527336860670194 + N[(N[(x * x), $MachinePrecision] * -2.6455026455026456e-5), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x \cdot \left(x \cdot \left(0.16666666666666666 + \left(x \cdot x\right) \cdot \left(-0.005555555555555556 + x \cdot \left(x \cdot \left(0.0003527336860670194 + \left(x \cdot x\right) \cdot -2.6455026455026456 \cdot 10^{-5}\right)\right)\right)\right)\right)
\end{array}
Initial program 53.2%
Taylor expanded in x around 0
unpow2N/A
associate-*l*N/A
*-lowering-*.f64N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
sub-negN/A
metadata-evalN/A
+-commutativeN/A
+-lowering-+.f64N/A
unpow2N/A
associate-*l*N/A
*-lowering-*.f64N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
Simplified95.9%
(FPCore (x) :precision binary64 (+ (* (* x x) 0.16666666666666666) (* (* x x) (* x (* x (+ -0.005555555555555556 (* (* x x) 0.0003527336860670194)))))))
double code(double x) {
return ((x * x) * 0.16666666666666666) + ((x * x) * (x * (x * (-0.005555555555555556 + ((x * x) * 0.0003527336860670194)))));
}
real(8) function code(x)
real(8), intent (in) :: x
code = ((x * x) * 0.16666666666666666d0) + ((x * x) * (x * (x * ((-0.005555555555555556d0) + ((x * x) * 0.0003527336860670194d0)))))
end function
public static double code(double x) {
return ((x * x) * 0.16666666666666666) + ((x * x) * (x * (x * (-0.005555555555555556 + ((x * x) * 0.0003527336860670194)))));
}
def code(x): return ((x * x) * 0.16666666666666666) + ((x * x) * (x * (x * (-0.005555555555555556 + ((x * x) * 0.0003527336860670194)))))
function code(x) return Float64(Float64(Float64(x * x) * 0.16666666666666666) + Float64(Float64(x * x) * Float64(x * Float64(x * Float64(-0.005555555555555556 + Float64(Float64(x * x) * 0.0003527336860670194)))))) end
function tmp = code(x) tmp = ((x * x) * 0.16666666666666666) + ((x * x) * (x * (x * (-0.005555555555555556 + ((x * x) * 0.0003527336860670194))))); end
code[x_] := N[(N[(N[(x * x), $MachinePrecision] * 0.16666666666666666), $MachinePrecision] + N[(N[(x * x), $MachinePrecision] * N[(x * N[(x * N[(-0.005555555555555556 + N[(N[(x * x), $MachinePrecision] * 0.0003527336860670194), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\left(x \cdot x\right) \cdot 0.16666666666666666 + \left(x \cdot x\right) \cdot \left(x \cdot \left(x \cdot \left(-0.005555555555555556 + \left(x \cdot x\right) \cdot 0.0003527336860670194\right)\right)\right)
\end{array}
Initial program 53.2%
Taylor expanded in x around 0
unpow2N/A
associate-*l*N/A
*-lowering-*.f64N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
sub-negN/A
metadata-evalN/A
+-commutativeN/A
+-lowering-+.f64N/A
unpow2N/A
associate-*l*N/A
*-lowering-*.f64N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
Simplified95.9%
associate-*r*N/A
+-commutativeN/A
distribute-rgt-inN/A
+-lowering-+.f64N/A
Applied egg-rr95.9%
Taylor expanded in x around 0
unpow2N/A
associate-*l*N/A
*-lowering-*.f64N/A
*-lowering-*.f64N/A
sub-negN/A
metadata-evalN/A
+-commutativeN/A
+-lowering-+.f64N/A
*-commutativeN/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f6495.8%
Simplified95.8%
Final simplification95.8%
(FPCore (x)
:precision binary64
(*
x
(*
x
(+
0.16666666666666666
(* (* x x) (+ -0.005555555555555556 (* (* x x) 0.0003527336860670194)))))))
double code(double x) {
return x * (x * (0.16666666666666666 + ((x * x) * (-0.005555555555555556 + ((x * x) * 0.0003527336860670194)))));
}
real(8) function code(x)
real(8), intent (in) :: x
code = x * (x * (0.16666666666666666d0 + ((x * x) * ((-0.005555555555555556d0) + ((x * x) * 0.0003527336860670194d0)))))
end function
public static double code(double x) {
return x * (x * (0.16666666666666666 + ((x * x) * (-0.005555555555555556 + ((x * x) * 0.0003527336860670194)))));
}
def code(x): return x * (x * (0.16666666666666666 + ((x * x) * (-0.005555555555555556 + ((x * x) * 0.0003527336860670194)))))
function code(x) return Float64(x * Float64(x * Float64(0.16666666666666666 + Float64(Float64(x * x) * Float64(-0.005555555555555556 + Float64(Float64(x * x) * 0.0003527336860670194)))))) end
function tmp = code(x) tmp = x * (x * (0.16666666666666666 + ((x * x) * (-0.005555555555555556 + ((x * x) * 0.0003527336860670194))))); end
code[x_] := N[(x * N[(x * N[(0.16666666666666666 + N[(N[(x * x), $MachinePrecision] * N[(-0.005555555555555556 + N[(N[(x * x), $MachinePrecision] * 0.0003527336860670194), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x \cdot \left(x \cdot \left(0.16666666666666666 + \left(x \cdot x\right) \cdot \left(-0.005555555555555556 + \left(x \cdot x\right) \cdot 0.0003527336860670194\right)\right)\right)
\end{array}
Initial program 53.2%
Taylor expanded in x around 0
unpow2N/A
associate-*l*N/A
*-lowering-*.f64N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
sub-negN/A
metadata-evalN/A
+-commutativeN/A
+-lowering-+.f64N/A
*-commutativeN/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f6495.8%
Simplified95.8%
(FPCore (x) :precision binary64 (+ (* (* x x) 0.16666666666666666) (* (* x x) (* (* x x) -0.005555555555555556))))
double code(double x) {
return ((x * x) * 0.16666666666666666) + ((x * x) * ((x * x) * -0.005555555555555556));
}
real(8) function code(x)
real(8), intent (in) :: x
code = ((x * x) * 0.16666666666666666d0) + ((x * x) * ((x * x) * (-0.005555555555555556d0)))
end function
public static double code(double x) {
return ((x * x) * 0.16666666666666666) + ((x * x) * ((x * x) * -0.005555555555555556));
}
def code(x): return ((x * x) * 0.16666666666666666) + ((x * x) * ((x * x) * -0.005555555555555556))
function code(x) return Float64(Float64(Float64(x * x) * 0.16666666666666666) + Float64(Float64(x * x) * Float64(Float64(x * x) * -0.005555555555555556))) end
function tmp = code(x) tmp = ((x * x) * 0.16666666666666666) + ((x * x) * ((x * x) * -0.005555555555555556)); end
code[x_] := N[(N[(N[(x * x), $MachinePrecision] * 0.16666666666666666), $MachinePrecision] + N[(N[(x * x), $MachinePrecision] * N[(N[(x * x), $MachinePrecision] * -0.005555555555555556), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\left(x \cdot x\right) \cdot 0.16666666666666666 + \left(x \cdot x\right) \cdot \left(\left(x \cdot x\right) \cdot -0.005555555555555556\right)
\end{array}
Initial program 53.2%
Taylor expanded in x around 0
unpow2N/A
associate-*l*N/A
*-lowering-*.f64N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f64N/A
sub-negN/A
metadata-evalN/A
+-commutativeN/A
+-lowering-+.f64N/A
unpow2N/A
associate-*l*N/A
*-lowering-*.f64N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
Simplified95.9%
associate-*r*N/A
+-commutativeN/A
distribute-rgt-inN/A
+-lowering-+.f64N/A
Applied egg-rr95.9%
Taylor expanded in x around 0
*-commutativeN/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f6495.0%
Simplified95.0%
Final simplification95.0%
(FPCore (x) :precision binary64 (* x (* x (+ 0.16666666666666666 (* (* x x) -0.005555555555555556)))))
double code(double x) {
return x * (x * (0.16666666666666666 + ((x * x) * -0.005555555555555556)));
}
real(8) function code(x)
real(8), intent (in) :: x
code = x * (x * (0.16666666666666666d0 + ((x * x) * (-0.005555555555555556d0))))
end function
public static double code(double x) {
return x * (x * (0.16666666666666666 + ((x * x) * -0.005555555555555556)));
}
def code(x): return x * (x * (0.16666666666666666 + ((x * x) * -0.005555555555555556)))
function code(x) return Float64(x * Float64(x * Float64(0.16666666666666666 + Float64(Float64(x * x) * -0.005555555555555556)))) end
function tmp = code(x) tmp = x * (x * (0.16666666666666666 + ((x * x) * -0.005555555555555556))); end
code[x_] := N[(x * N[(x * N[(0.16666666666666666 + N[(N[(x * x), $MachinePrecision] * -0.005555555555555556), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x \cdot \left(x \cdot \left(0.16666666666666666 + \left(x \cdot x\right) \cdot -0.005555555555555556\right)\right)
\end{array}
Initial program 53.2%
Taylor expanded in x around 0
unpow2N/A
associate-*l*N/A
*-lowering-*.f64N/A
*-lowering-*.f64N/A
+-lowering-+.f64N/A
*-commutativeN/A
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f6495.0%
Simplified95.0%
(FPCore (x) :precision binary64 (* (* x x) 0.16666666666666666))
double code(double x) {
return (x * x) * 0.16666666666666666;
}
real(8) function code(x)
real(8), intent (in) :: x
code = (x * x) * 0.16666666666666666d0
end function
public static double code(double x) {
return (x * x) * 0.16666666666666666;
}
def code(x): return (x * x) * 0.16666666666666666
function code(x) return Float64(Float64(x * x) * 0.16666666666666666) end
function tmp = code(x) tmp = (x * x) * 0.16666666666666666; end
code[x_] := N[(N[(x * x), $MachinePrecision] * 0.16666666666666666), $MachinePrecision]
\begin{array}{l}
\\
\left(x \cdot x\right) \cdot 0.16666666666666666
\end{array}
Initial program 53.2%
Taylor expanded in x around 0
*-lowering-*.f64N/A
unpow2N/A
*-lowering-*.f6494.3%
Simplified94.3%
Final simplification94.3%
(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 53.2%
clear-numN/A
inv-powN/A
sqr-powN/A
log-prodN/A
+-lowering-+.f64N/A
log-lowering-log.f64N/A
clear-numN/A
inv-powN/A
metadata-evalN/A
metadata-evalN/A
metadata-evalN/A
pow-powN/A
metadata-evalN/A
metadata-evalN/A
metadata-evalN/A
metadata-evalN/A
pow-lowering-pow.f64N/A
/-lowering-/.f64N/A
sinh-lowering-sinh.f64N/A
metadata-evalN/A
Applied egg-rr53.1%
flip-+N/A
+-inversesN/A
metadata-evalN/A
+-inversesN/A
sub-divN/A
Applied egg-rr48.1%
(FPCore (x)
:precision binary64
(if (< (fabs x) 0.085)
(*
(* x x)
(fma
(fma
(fma -2.6455026455026456e-5 (* x x) 0.0003527336860670194)
(* x x)
-0.005555555555555556)
(* x x)
0.16666666666666666))
(log (/ (sinh x) x))))
double code(double x) {
double tmp;
if (fabs(x) < 0.085) {
tmp = (x * x) * fma(fma(fma(-2.6455026455026456e-5, (x * x), 0.0003527336860670194), (x * x), -0.005555555555555556), (x * x), 0.16666666666666666);
} else {
tmp = log((sinh(x) / x));
}
return tmp;
}
function code(x) tmp = 0.0 if (abs(x) < 0.085) tmp = Float64(Float64(x * x) * fma(fma(fma(-2.6455026455026456e-5, Float64(x * x), 0.0003527336860670194), Float64(x * x), -0.005555555555555556), Float64(x * x), 0.16666666666666666)); else tmp = log(Float64(sinh(x) / x)); end return tmp end
code[x_] := If[Less[N[Abs[x], $MachinePrecision], 0.085], N[(N[(x * x), $MachinePrecision] * N[(N[(N[(-2.6455026455026456e-5 * N[(x * x), $MachinePrecision] + 0.0003527336860670194), $MachinePrecision] * N[(x * x), $MachinePrecision] + -0.005555555555555556), $MachinePrecision] * N[(x * x), $MachinePrecision] + 0.16666666666666666), $MachinePrecision]), $MachinePrecision], N[Log[N[(N[Sinh[x], $MachinePrecision] / x), $MachinePrecision]], $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;\left|x\right| < 0.085:\\
\;\;\;\;\left(x \cdot x\right) \cdot \mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(-2.6455026455026456 \cdot 10^{-5}, x \cdot x, 0.0003527336860670194\right), x \cdot x, -0.005555555555555556\right), x \cdot x, 0.16666666666666666\right)\\
\mathbf{else}:\\
\;\;\;\;\log \left(\frac{\sinh x}{x}\right)\\
\end{array}
\end{array}
herbie shell --seed 2024150
(FPCore (x)
:name "bug500, discussion (missed optimization)"
:precision binary64
:alt
(! :herbie-platform default (if (< (fabs x) 17/200) (let ((x2 (* x x))) (* x2 (fma (fma (fma -1/37800 x2 1/2835) x2 -1/180) x2 1/6))) (log (/ (sinh x) x))))
(log (/ (sinh x) x)))