
(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 9 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}
x_m = (fabs.f64 x)
(FPCore (x_m)
:precision binary64
(if (<= x_m 0.029)
(+
(* -0.005555555555555556 (pow x_m 4.0))
(+
(* 0.0003527336860670194 (pow x_m 6.0))
(* x_m (* x_m 0.16666666666666666))))
(if (<= x_m 700.0)
(- (cbrt (pow (log (/ x_m (sinh x_m))) 3.0)))
(+
(log 0.0001984126984126984)
(+ (* -6.0 (log (/ 1.0 x_m))) (* 42.0 (/ 1.0 (pow x_m 2.0))))))))x_m = fabs(x);
double code(double x_m) {
double tmp;
if (x_m <= 0.029) {
tmp = (-0.005555555555555556 * pow(x_m, 4.0)) + ((0.0003527336860670194 * pow(x_m, 6.0)) + (x_m * (x_m * 0.16666666666666666)));
} else if (x_m <= 700.0) {
tmp = -cbrt(pow(log((x_m / sinh(x_m))), 3.0));
} else {
tmp = log(0.0001984126984126984) + ((-6.0 * log((1.0 / x_m))) + (42.0 * (1.0 / pow(x_m, 2.0))));
}
return tmp;
}
x_m = Math.abs(x);
public static double code(double x_m) {
double tmp;
if (x_m <= 0.029) {
tmp = (-0.005555555555555556 * Math.pow(x_m, 4.0)) + ((0.0003527336860670194 * Math.pow(x_m, 6.0)) + (x_m * (x_m * 0.16666666666666666)));
} else if (x_m <= 700.0) {
tmp = -Math.cbrt(Math.pow(Math.log((x_m / Math.sinh(x_m))), 3.0));
} else {
tmp = Math.log(0.0001984126984126984) + ((-6.0 * Math.log((1.0 / x_m))) + (42.0 * (1.0 / Math.pow(x_m, 2.0))));
}
return tmp;
}
x_m = abs(x) function code(x_m) tmp = 0.0 if (x_m <= 0.029) tmp = Float64(Float64(-0.005555555555555556 * (x_m ^ 4.0)) + Float64(Float64(0.0003527336860670194 * (x_m ^ 6.0)) + Float64(x_m * Float64(x_m * 0.16666666666666666)))); elseif (x_m <= 700.0) tmp = Float64(-cbrt((log(Float64(x_m / sinh(x_m))) ^ 3.0))); else tmp = Float64(log(0.0001984126984126984) + Float64(Float64(-6.0 * log(Float64(1.0 / x_m))) + Float64(42.0 * Float64(1.0 / (x_m ^ 2.0))))); end return tmp end
x_m = N[Abs[x], $MachinePrecision] code[x$95$m_] := If[LessEqual[x$95$m, 0.029], N[(N[(-0.005555555555555556 * N[Power[x$95$m, 4.0], $MachinePrecision]), $MachinePrecision] + N[(N[(0.0003527336860670194 * N[Power[x$95$m, 6.0], $MachinePrecision]), $MachinePrecision] + N[(x$95$m * N[(x$95$m * 0.16666666666666666), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[x$95$m, 700.0], (-N[Power[N[Power[N[Log[N[(x$95$m / N[Sinh[x$95$m], $MachinePrecision]), $MachinePrecision]], $MachinePrecision], 3.0], $MachinePrecision], 1/3], $MachinePrecision]), N[(N[Log[0.0001984126984126984], $MachinePrecision] + N[(N[(-6.0 * N[Log[N[(1.0 / x$95$m), $MachinePrecision]], $MachinePrecision]), $MachinePrecision] + N[(42.0 * N[(1.0 / N[Power[x$95$m, 2.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}
x_m = \left|x\right|
\\
\begin{array}{l}
\mathbf{if}\;x_m \leq 0.029:\\
\;\;\;\;-0.005555555555555556 \cdot {x_m}^{4} + \left(0.0003527336860670194 \cdot {x_m}^{6} + x_m \cdot \left(x_m \cdot 0.16666666666666666\right)\right)\\
\mathbf{elif}\;x_m \leq 700:\\
\;\;\;\;-\sqrt[3]{{\log \left(\frac{x_m}{\sinh x_m}\right)}^{3}}\\
\mathbf{else}:\\
\;\;\;\;\log 0.0001984126984126984 + \left(-6 \cdot \log \left(\frac{1}{x_m}\right) + 42 \cdot \frac{1}{{x_m}^{2}}\right)\\
\end{array}
\end{array}
if x < 0.0290000000000000015Initial program 56.5%
Taylor expanded in x around 0 98.7%
add-sqr-sqrt98.4%
pow298.4%
*-commutative98.4%
sqrt-prod98.5%
unpow298.5%
sqrt-prod46.0%
add-sqr-sqrt98.5%
Applied egg-rr98.5%
*-commutative98.5%
add-sqr-sqrt46.0%
sqrt-prod98.5%
unpow298.5%
sqrt-prod98.4%
pow298.4%
add-sqr-sqrt98.7%
unpow298.7%
associate-*r*98.7%
Applied egg-rr98.7%
if 0.0290000000000000015 < x < 700Initial program 96.4%
clear-num96.4%
neg-log96.8%
Applied egg-rr96.8%
add-cbrt-cube96.8%
pow396.8%
Applied egg-rr96.8%
if 700 < x Initial program 3.2%
Taylor expanded in x around 0 13.2%
Taylor expanded in x around inf 13.2%
Final simplification97.7%
x_m = (fabs.f64 x)
(FPCore (x_m)
:precision binary64
(let* ((t_0 (/ (sinh x_m) x_m)))
(if (<= t_0 1.0002)
(+
(* -0.005555555555555556 (pow x_m 4.0))
(+
(* 0.0003527336860670194 (pow x_m 6.0))
(* x_m (* x_m 0.16666666666666666))))
(if (<= t_0 5e+40)
(- (log (/ x_m (sinh x_m))))
(+
(log 0.0001984126984126984)
(+ (* -6.0 (log (/ 1.0 x_m))) (* 42.0 (/ 1.0 (pow x_m 2.0)))))))))x_m = fabs(x);
double code(double x_m) {
double t_0 = sinh(x_m) / x_m;
double tmp;
if (t_0 <= 1.0002) {
tmp = (-0.005555555555555556 * pow(x_m, 4.0)) + ((0.0003527336860670194 * pow(x_m, 6.0)) + (x_m * (x_m * 0.16666666666666666)));
} else if (t_0 <= 5e+40) {
tmp = -log((x_m / sinh(x_m)));
} else {
tmp = log(0.0001984126984126984) + ((-6.0 * log((1.0 / x_m))) + (42.0 * (1.0 / pow(x_m, 2.0))));
}
return tmp;
}
x_m = abs(x)
real(8) function code(x_m)
real(8), intent (in) :: x_m
real(8) :: t_0
real(8) :: tmp
t_0 = sinh(x_m) / x_m
if (t_0 <= 1.0002d0) then
tmp = ((-0.005555555555555556d0) * (x_m ** 4.0d0)) + ((0.0003527336860670194d0 * (x_m ** 6.0d0)) + (x_m * (x_m * 0.16666666666666666d0)))
else if (t_0 <= 5d+40) then
tmp = -log((x_m / sinh(x_m)))
else
tmp = log(0.0001984126984126984d0) + (((-6.0d0) * log((1.0d0 / x_m))) + (42.0d0 * (1.0d0 / (x_m ** 2.0d0))))
end if
code = tmp
end function
x_m = Math.abs(x);
public static double code(double x_m) {
double t_0 = Math.sinh(x_m) / x_m;
double tmp;
if (t_0 <= 1.0002) {
tmp = (-0.005555555555555556 * Math.pow(x_m, 4.0)) + ((0.0003527336860670194 * Math.pow(x_m, 6.0)) + (x_m * (x_m * 0.16666666666666666)));
} else if (t_0 <= 5e+40) {
tmp = -Math.log((x_m / Math.sinh(x_m)));
} else {
tmp = Math.log(0.0001984126984126984) + ((-6.0 * Math.log((1.0 / x_m))) + (42.0 * (1.0 / Math.pow(x_m, 2.0))));
}
return tmp;
}
x_m = math.fabs(x) def code(x_m): t_0 = math.sinh(x_m) / x_m tmp = 0 if t_0 <= 1.0002: tmp = (-0.005555555555555556 * math.pow(x_m, 4.0)) + ((0.0003527336860670194 * math.pow(x_m, 6.0)) + (x_m * (x_m * 0.16666666666666666))) elif t_0 <= 5e+40: tmp = -math.log((x_m / math.sinh(x_m))) else: tmp = math.log(0.0001984126984126984) + ((-6.0 * math.log((1.0 / x_m))) + (42.0 * (1.0 / math.pow(x_m, 2.0)))) return tmp
x_m = abs(x) function code(x_m) t_0 = Float64(sinh(x_m) / x_m) tmp = 0.0 if (t_0 <= 1.0002) tmp = Float64(Float64(-0.005555555555555556 * (x_m ^ 4.0)) + Float64(Float64(0.0003527336860670194 * (x_m ^ 6.0)) + Float64(x_m * Float64(x_m * 0.16666666666666666)))); elseif (t_0 <= 5e+40) tmp = Float64(-log(Float64(x_m / sinh(x_m)))); else tmp = Float64(log(0.0001984126984126984) + Float64(Float64(-6.0 * log(Float64(1.0 / x_m))) + Float64(42.0 * Float64(1.0 / (x_m ^ 2.0))))); end return tmp end
x_m = abs(x); function tmp_2 = code(x_m) t_0 = sinh(x_m) / x_m; tmp = 0.0; if (t_0 <= 1.0002) tmp = (-0.005555555555555556 * (x_m ^ 4.0)) + ((0.0003527336860670194 * (x_m ^ 6.0)) + (x_m * (x_m * 0.16666666666666666))); elseif (t_0 <= 5e+40) tmp = -log((x_m / sinh(x_m))); else tmp = log(0.0001984126984126984) + ((-6.0 * log((1.0 / x_m))) + (42.0 * (1.0 / (x_m ^ 2.0)))); end tmp_2 = tmp; end
x_m = N[Abs[x], $MachinePrecision]
code[x$95$m_] := Block[{t$95$0 = N[(N[Sinh[x$95$m], $MachinePrecision] / x$95$m), $MachinePrecision]}, If[LessEqual[t$95$0, 1.0002], N[(N[(-0.005555555555555556 * N[Power[x$95$m, 4.0], $MachinePrecision]), $MachinePrecision] + N[(N[(0.0003527336860670194 * N[Power[x$95$m, 6.0], $MachinePrecision]), $MachinePrecision] + N[(x$95$m * N[(x$95$m * 0.16666666666666666), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[t$95$0, 5e+40], (-N[Log[N[(x$95$m / N[Sinh[x$95$m], $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), N[(N[Log[0.0001984126984126984], $MachinePrecision] + N[(N[(-6.0 * N[Log[N[(1.0 / x$95$m), $MachinePrecision]], $MachinePrecision]), $MachinePrecision] + N[(42.0 * N[(1.0 / N[Power[x$95$m, 2.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]]
\begin{array}{l}
x_m = \left|x\right|
\\
\begin{array}{l}
t_0 := \frac{\sinh x_m}{x_m}\\
\mathbf{if}\;t_0 \leq 1.0002:\\
\;\;\;\;-0.005555555555555556 \cdot {x_m}^{4} + \left(0.0003527336860670194 \cdot {x_m}^{6} + x_m \cdot \left(x_m \cdot 0.16666666666666666\right)\right)\\
\mathbf{elif}\;t_0 \leq 5 \cdot 10^{+40}:\\
\;\;\;\;-\log \left(\frac{x_m}{\sinh x_m}\right)\\
\mathbf{else}:\\
\;\;\;\;\log 0.0001984126984126984 + \left(-6 \cdot \log \left(\frac{1}{x_m}\right) + 42 \cdot \frac{1}{{x_m}^{2}}\right)\\
\end{array}
\end{array}
if (/.f64 (sinh.f64 x) x) < 1.0002Initial program 56.7%
Taylor expanded in x around 0 99.7%
add-sqr-sqrt99.5%
pow299.5%
*-commutative99.5%
sqrt-prod99.6%
unpow299.6%
sqrt-prod46.6%
add-sqr-sqrt99.6%
Applied egg-rr99.6%
*-commutative99.6%
add-sqr-sqrt46.6%
sqrt-prod99.6%
unpow299.6%
sqrt-prod99.5%
pow299.5%
add-sqr-sqrt99.7%
unpow299.7%
associate-*r*99.8%
Applied egg-rr99.8%
if 1.0002 < (/.f64 (sinh.f64 x) x) < 5.00000000000000003e40Initial program 97.0%
clear-num97.0%
neg-log97.3%
Applied egg-rr97.3%
if 5.00000000000000003e40 < (/.f64 (sinh.f64 x) x) Initial program 3.2%
Taylor expanded in x around 0 13.4%
Taylor expanded in x around inf 7.9%
Final simplification97.9%
x_m = (fabs.f64 x)
(FPCore (x_m)
:precision binary64
(if (<= x_m 0.082)
(+
(* -0.005555555555555556 (pow x_m 4.0))
(+
(* -2.6455026455026456e-5 (pow x_m 8.0))
(+
(* 0.0003527336860670194 (pow x_m 6.0))
(* 0.16666666666666666 (pow x_m 2.0)))))
(- (log (/ x_m (sinh x_m))))))x_m = fabs(x);
double code(double x_m) {
double tmp;
if (x_m <= 0.082) {
tmp = (-0.005555555555555556 * pow(x_m, 4.0)) + ((-2.6455026455026456e-5 * pow(x_m, 8.0)) + ((0.0003527336860670194 * pow(x_m, 6.0)) + (0.16666666666666666 * pow(x_m, 2.0))));
} else {
tmp = -log((x_m / sinh(x_m)));
}
return tmp;
}
x_m = abs(x)
real(8) function code(x_m)
real(8), intent (in) :: x_m
real(8) :: tmp
if (x_m <= 0.082d0) then
tmp = ((-0.005555555555555556d0) * (x_m ** 4.0d0)) + (((-2.6455026455026456d-5) * (x_m ** 8.0d0)) + ((0.0003527336860670194d0 * (x_m ** 6.0d0)) + (0.16666666666666666d0 * (x_m ** 2.0d0))))
else
tmp = -log((x_m / sinh(x_m)))
end if
code = tmp
end function
x_m = Math.abs(x);
public static double code(double x_m) {
double tmp;
if (x_m <= 0.082) {
tmp = (-0.005555555555555556 * Math.pow(x_m, 4.0)) + ((-2.6455026455026456e-5 * Math.pow(x_m, 8.0)) + ((0.0003527336860670194 * Math.pow(x_m, 6.0)) + (0.16666666666666666 * Math.pow(x_m, 2.0))));
} else {
tmp = -Math.log((x_m / Math.sinh(x_m)));
}
return tmp;
}
x_m = math.fabs(x) def code(x_m): tmp = 0 if x_m <= 0.082: tmp = (-0.005555555555555556 * math.pow(x_m, 4.0)) + ((-2.6455026455026456e-5 * math.pow(x_m, 8.0)) + ((0.0003527336860670194 * math.pow(x_m, 6.0)) + (0.16666666666666666 * math.pow(x_m, 2.0)))) else: tmp = -math.log((x_m / math.sinh(x_m))) return tmp
x_m = abs(x) function code(x_m) tmp = 0.0 if (x_m <= 0.082) tmp = Float64(Float64(-0.005555555555555556 * (x_m ^ 4.0)) + Float64(Float64(-2.6455026455026456e-5 * (x_m ^ 8.0)) + Float64(Float64(0.0003527336860670194 * (x_m ^ 6.0)) + Float64(0.16666666666666666 * (x_m ^ 2.0))))); else tmp = Float64(-log(Float64(x_m / sinh(x_m)))); end return tmp end
x_m = abs(x); function tmp_2 = code(x_m) tmp = 0.0; if (x_m <= 0.082) tmp = (-0.005555555555555556 * (x_m ^ 4.0)) + ((-2.6455026455026456e-5 * (x_m ^ 8.0)) + ((0.0003527336860670194 * (x_m ^ 6.0)) + (0.16666666666666666 * (x_m ^ 2.0)))); else tmp = -log((x_m / sinh(x_m))); end tmp_2 = tmp; end
x_m = N[Abs[x], $MachinePrecision] code[x$95$m_] := If[LessEqual[x$95$m, 0.082], N[(N[(-0.005555555555555556 * N[Power[x$95$m, 4.0], $MachinePrecision]), $MachinePrecision] + N[(N[(-2.6455026455026456e-5 * N[Power[x$95$m, 8.0], $MachinePrecision]), $MachinePrecision] + N[(N[(0.0003527336860670194 * N[Power[x$95$m, 6.0], $MachinePrecision]), $MachinePrecision] + N[(0.16666666666666666 * N[Power[x$95$m, 2.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], (-N[Log[N[(x$95$m / N[Sinh[x$95$m], $MachinePrecision]), $MachinePrecision]], $MachinePrecision])]
\begin{array}{l}
x_m = \left|x\right|
\\
\begin{array}{l}
\mathbf{if}\;x_m \leq 0.082:\\
\;\;\;\;-0.005555555555555556 \cdot {x_m}^{4} + \left(-2.6455026455026456 \cdot 10^{-5} \cdot {x_m}^{8} + \left(0.0003527336860670194 \cdot {x_m}^{6} + 0.16666666666666666 \cdot {x_m}^{2}\right)\right)\\
\mathbf{else}:\\
\;\;\;\;-\log \left(\frac{x_m}{\sinh x_m}\right)\\
\end{array}
\end{array}
if x < 0.0820000000000000034Initial program 56.6%
Taylor expanded in x around 0 98.6%
if 0.0820000000000000034 < x Initial program 58.1%
clear-num58.1%
neg-log58.3%
Applied egg-rr58.3%
Final simplification97.5%
x_m = (fabs.f64 x)
(FPCore (x_m)
:precision binary64
(let* ((t_0 (/ (sinh x_m) x_m)))
(if (<= t_0 1.0002)
(+
(* -0.005555555555555556 (pow x_m 4.0))
(+
(* 0.0003527336860670194 (pow x_m 6.0))
(* x_m (* x_m 0.16666666666666666))))
(if (<= t_0 5e+40)
(- (log (/ x_m (sinh x_m))))
(+ (log 0.0001984126984126984) (* 6.0 (log x_m)))))))x_m = fabs(x);
double code(double x_m) {
double t_0 = sinh(x_m) / x_m;
double tmp;
if (t_0 <= 1.0002) {
tmp = (-0.005555555555555556 * pow(x_m, 4.0)) + ((0.0003527336860670194 * pow(x_m, 6.0)) + (x_m * (x_m * 0.16666666666666666)));
} else if (t_0 <= 5e+40) {
tmp = -log((x_m / sinh(x_m)));
} else {
tmp = log(0.0001984126984126984) + (6.0 * log(x_m));
}
return tmp;
}
x_m = abs(x)
real(8) function code(x_m)
real(8), intent (in) :: x_m
real(8) :: t_0
real(8) :: tmp
t_0 = sinh(x_m) / x_m
if (t_0 <= 1.0002d0) then
tmp = ((-0.005555555555555556d0) * (x_m ** 4.0d0)) + ((0.0003527336860670194d0 * (x_m ** 6.0d0)) + (x_m * (x_m * 0.16666666666666666d0)))
else if (t_0 <= 5d+40) then
tmp = -log((x_m / sinh(x_m)))
else
tmp = log(0.0001984126984126984d0) + (6.0d0 * log(x_m))
end if
code = tmp
end function
x_m = Math.abs(x);
public static double code(double x_m) {
double t_0 = Math.sinh(x_m) / x_m;
double tmp;
if (t_0 <= 1.0002) {
tmp = (-0.005555555555555556 * Math.pow(x_m, 4.0)) + ((0.0003527336860670194 * Math.pow(x_m, 6.0)) + (x_m * (x_m * 0.16666666666666666)));
} else if (t_0 <= 5e+40) {
tmp = -Math.log((x_m / Math.sinh(x_m)));
} else {
tmp = Math.log(0.0001984126984126984) + (6.0 * Math.log(x_m));
}
return tmp;
}
x_m = math.fabs(x) def code(x_m): t_0 = math.sinh(x_m) / x_m tmp = 0 if t_0 <= 1.0002: tmp = (-0.005555555555555556 * math.pow(x_m, 4.0)) + ((0.0003527336860670194 * math.pow(x_m, 6.0)) + (x_m * (x_m * 0.16666666666666666))) elif t_0 <= 5e+40: tmp = -math.log((x_m / math.sinh(x_m))) else: tmp = math.log(0.0001984126984126984) + (6.0 * math.log(x_m)) return tmp
x_m = abs(x) function code(x_m) t_0 = Float64(sinh(x_m) / x_m) tmp = 0.0 if (t_0 <= 1.0002) tmp = Float64(Float64(-0.005555555555555556 * (x_m ^ 4.0)) + Float64(Float64(0.0003527336860670194 * (x_m ^ 6.0)) + Float64(x_m * Float64(x_m * 0.16666666666666666)))); elseif (t_0 <= 5e+40) tmp = Float64(-log(Float64(x_m / sinh(x_m)))); else tmp = Float64(log(0.0001984126984126984) + Float64(6.0 * log(x_m))); end return tmp end
x_m = abs(x); function tmp_2 = code(x_m) t_0 = sinh(x_m) / x_m; tmp = 0.0; if (t_0 <= 1.0002) tmp = (-0.005555555555555556 * (x_m ^ 4.0)) + ((0.0003527336860670194 * (x_m ^ 6.0)) + (x_m * (x_m * 0.16666666666666666))); elseif (t_0 <= 5e+40) tmp = -log((x_m / sinh(x_m))); else tmp = log(0.0001984126984126984) + (6.0 * log(x_m)); end tmp_2 = tmp; end
x_m = N[Abs[x], $MachinePrecision]
code[x$95$m_] := Block[{t$95$0 = N[(N[Sinh[x$95$m], $MachinePrecision] / x$95$m), $MachinePrecision]}, If[LessEqual[t$95$0, 1.0002], N[(N[(-0.005555555555555556 * N[Power[x$95$m, 4.0], $MachinePrecision]), $MachinePrecision] + N[(N[(0.0003527336860670194 * N[Power[x$95$m, 6.0], $MachinePrecision]), $MachinePrecision] + N[(x$95$m * N[(x$95$m * 0.16666666666666666), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[t$95$0, 5e+40], (-N[Log[N[(x$95$m / N[Sinh[x$95$m], $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), N[(N[Log[0.0001984126984126984], $MachinePrecision] + N[(6.0 * N[Log[x$95$m], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]]
\begin{array}{l}
x_m = \left|x\right|
\\
\begin{array}{l}
t_0 := \frac{\sinh x_m}{x_m}\\
\mathbf{if}\;t_0 \leq 1.0002:\\
\;\;\;\;-0.005555555555555556 \cdot {x_m}^{4} + \left(0.0003527336860670194 \cdot {x_m}^{6} + x_m \cdot \left(x_m \cdot 0.16666666666666666\right)\right)\\
\mathbf{elif}\;t_0 \leq 5 \cdot 10^{+40}:\\
\;\;\;\;-\log \left(\frac{x_m}{\sinh x_m}\right)\\
\mathbf{else}:\\
\;\;\;\;\log 0.0001984126984126984 + 6 \cdot \log x_m\\
\end{array}
\end{array}
if (/.f64 (sinh.f64 x) x) < 1.0002Initial program 56.7%
Taylor expanded in x around 0 99.7%
add-sqr-sqrt99.5%
pow299.5%
*-commutative99.5%
sqrt-prod99.6%
unpow299.6%
sqrt-prod46.6%
add-sqr-sqrt99.6%
Applied egg-rr99.6%
*-commutative99.6%
add-sqr-sqrt46.6%
sqrt-prod99.6%
unpow299.6%
sqrt-prod99.5%
pow299.5%
add-sqr-sqrt99.7%
unpow299.7%
associate-*r*99.8%
Applied egg-rr99.8%
if 1.0002 < (/.f64 (sinh.f64 x) x) < 5.00000000000000003e40Initial program 97.0%
clear-num97.0%
neg-log97.3%
Applied egg-rr97.3%
if 5.00000000000000003e40 < (/.f64 (sinh.f64 x) x) Initial program 3.2%
Taylor expanded in x around 0 13.4%
Taylor expanded in x around inf 7.9%
log-rec7.9%
neg-mul-17.9%
associate-*r*7.9%
metadata-eval7.9%
Simplified7.9%
Final simplification97.9%
x_m = (fabs.f64 x)
(FPCore (x_m)
:precision binary64
(if (<= (/ (sinh x_m) x_m) 1.00005)
(fma
(* x_m 0.16666666666666666)
x_m
(* -0.005555555555555556 (pow x_m 4.0)))
(- (log (/ x_m (sinh x_m))))))x_m = fabs(x);
double code(double x_m) {
double tmp;
if ((sinh(x_m) / x_m) <= 1.00005) {
tmp = fma((x_m * 0.16666666666666666), x_m, (-0.005555555555555556 * pow(x_m, 4.0)));
} else {
tmp = -log((x_m / sinh(x_m)));
}
return tmp;
}
x_m = abs(x) function code(x_m) tmp = 0.0 if (Float64(sinh(x_m) / x_m) <= 1.00005) tmp = fma(Float64(x_m * 0.16666666666666666), x_m, Float64(-0.005555555555555556 * (x_m ^ 4.0))); else tmp = Float64(-log(Float64(x_m / sinh(x_m)))); end return tmp end
x_m = N[Abs[x], $MachinePrecision] code[x$95$m_] := If[LessEqual[N[(N[Sinh[x$95$m], $MachinePrecision] / x$95$m), $MachinePrecision], 1.00005], N[(N[(x$95$m * 0.16666666666666666), $MachinePrecision] * x$95$m + N[(-0.005555555555555556 * N[Power[x$95$m, 4.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision], (-N[Log[N[(x$95$m / N[Sinh[x$95$m], $MachinePrecision]), $MachinePrecision]], $MachinePrecision])]
\begin{array}{l}
x_m = \left|x\right|
\\
\begin{array}{l}
\mathbf{if}\;\frac{\sinh x_m}{x_m} \leq 1.00005:\\
\;\;\;\;\mathsf{fma}\left(x_m \cdot 0.16666666666666666, x_m, -0.005555555555555556 \cdot {x_m}^{4}\right)\\
\mathbf{else}:\\
\;\;\;\;-\log \left(\frac{x_m}{\sinh x_m}\right)\\
\end{array}
\end{array}
if (/.f64 (sinh.f64 x) x) < 1.00005000000000011Initial program 56.6%
Taylor expanded in x around 0 99.7%
+-commutative99.7%
unpow299.7%
associate-*r*99.8%
fma-def99.8%
Applied egg-rr99.8%
if 1.00005000000000011 < (/.f64 (sinh.f64 x) x) Initial program 56.6%
clear-num56.6%
neg-log56.9%
Applied egg-rr56.9%
Final simplification97.8%
x_m = (fabs.f64 x) (FPCore (x_m) :precision binary64 (if (<= (/ (sinh x_m) x_m) 1.0000001) (* 0.16666666666666666 (pow x_m 2.0)) (- (log (/ x_m (sinh x_m))))))
x_m = fabs(x);
double code(double x_m) {
double tmp;
if ((sinh(x_m) / x_m) <= 1.0000001) {
tmp = 0.16666666666666666 * pow(x_m, 2.0);
} else {
tmp = -log((x_m / sinh(x_m)));
}
return tmp;
}
x_m = abs(x)
real(8) function code(x_m)
real(8), intent (in) :: x_m
real(8) :: tmp
if ((sinh(x_m) / x_m) <= 1.0000001d0) then
tmp = 0.16666666666666666d0 * (x_m ** 2.0d0)
else
tmp = -log((x_m / sinh(x_m)))
end if
code = tmp
end function
x_m = Math.abs(x);
public static double code(double x_m) {
double tmp;
if ((Math.sinh(x_m) / x_m) <= 1.0000001) {
tmp = 0.16666666666666666 * Math.pow(x_m, 2.0);
} else {
tmp = -Math.log((x_m / Math.sinh(x_m)));
}
return tmp;
}
x_m = math.fabs(x) def code(x_m): tmp = 0 if (math.sinh(x_m) / x_m) <= 1.0000001: tmp = 0.16666666666666666 * math.pow(x_m, 2.0) else: tmp = -math.log((x_m / math.sinh(x_m))) return tmp
x_m = abs(x) function code(x_m) tmp = 0.0 if (Float64(sinh(x_m) / x_m) <= 1.0000001) tmp = Float64(0.16666666666666666 * (x_m ^ 2.0)); else tmp = Float64(-log(Float64(x_m / sinh(x_m)))); end return tmp end
x_m = abs(x); function tmp_2 = code(x_m) tmp = 0.0; if ((sinh(x_m) / x_m) <= 1.0000001) tmp = 0.16666666666666666 * (x_m ^ 2.0); else tmp = -log((x_m / sinh(x_m))); end tmp_2 = tmp; end
x_m = N[Abs[x], $MachinePrecision] code[x$95$m_] := If[LessEqual[N[(N[Sinh[x$95$m], $MachinePrecision] / x$95$m), $MachinePrecision], 1.0000001], N[(0.16666666666666666 * N[Power[x$95$m, 2.0], $MachinePrecision]), $MachinePrecision], (-N[Log[N[(x$95$m / N[Sinh[x$95$m], $MachinePrecision]), $MachinePrecision]], $MachinePrecision])]
\begin{array}{l}
x_m = \left|x\right|
\\
\begin{array}{l}
\mathbf{if}\;\frac{\sinh x_m}{x_m} \leq 1.0000001:\\
\;\;\;\;0.16666666666666666 \cdot {x_m}^{2}\\
\mathbf{else}:\\
\;\;\;\;-\log \left(\frac{x_m}{\sinh x_m}\right)\\
\end{array}
\end{array}
if (/.f64 (sinh.f64 x) x) < 1.00000010000000006Initial program 56.5%
Taylor expanded in x around 0 99.7%
if 1.00000010000000006 < (/.f64 (sinh.f64 x) x) Initial program 58.1%
clear-num58.1%
neg-log59.1%
Applied egg-rr59.1%
Final simplification97.5%
x_m = (fabs.f64 x) (FPCore (x_m) :precision binary64 (let* ((t_0 (/ (sinh x_m) x_m))) (if (<= t_0 1.0000001) (* 0.16666666666666666 (pow x_m 2.0)) (log t_0))))
x_m = fabs(x);
double code(double x_m) {
double t_0 = sinh(x_m) / x_m;
double tmp;
if (t_0 <= 1.0000001) {
tmp = 0.16666666666666666 * pow(x_m, 2.0);
} else {
tmp = log(t_0);
}
return tmp;
}
x_m = abs(x)
real(8) function code(x_m)
real(8), intent (in) :: x_m
real(8) :: t_0
real(8) :: tmp
t_0 = sinh(x_m) / x_m
if (t_0 <= 1.0000001d0) then
tmp = 0.16666666666666666d0 * (x_m ** 2.0d0)
else
tmp = log(t_0)
end if
code = tmp
end function
x_m = Math.abs(x);
public static double code(double x_m) {
double t_0 = Math.sinh(x_m) / x_m;
double tmp;
if (t_0 <= 1.0000001) {
tmp = 0.16666666666666666 * Math.pow(x_m, 2.0);
} else {
tmp = Math.log(t_0);
}
return tmp;
}
x_m = math.fabs(x) def code(x_m): t_0 = math.sinh(x_m) / x_m tmp = 0 if t_0 <= 1.0000001: tmp = 0.16666666666666666 * math.pow(x_m, 2.0) else: tmp = math.log(t_0) return tmp
x_m = abs(x) function code(x_m) t_0 = Float64(sinh(x_m) / x_m) tmp = 0.0 if (t_0 <= 1.0000001) tmp = Float64(0.16666666666666666 * (x_m ^ 2.0)); else tmp = log(t_0); end return tmp end
x_m = abs(x); function tmp_2 = code(x_m) t_0 = sinh(x_m) / x_m; tmp = 0.0; if (t_0 <= 1.0000001) tmp = 0.16666666666666666 * (x_m ^ 2.0); else tmp = log(t_0); end tmp_2 = tmp; end
x_m = N[Abs[x], $MachinePrecision]
code[x$95$m_] := Block[{t$95$0 = N[(N[Sinh[x$95$m], $MachinePrecision] / x$95$m), $MachinePrecision]}, If[LessEqual[t$95$0, 1.0000001], N[(0.16666666666666666 * N[Power[x$95$m, 2.0], $MachinePrecision]), $MachinePrecision], N[Log[t$95$0], $MachinePrecision]]]
\begin{array}{l}
x_m = \left|x\right|
\\
\begin{array}{l}
t_0 := \frac{\sinh x_m}{x_m}\\
\mathbf{if}\;t_0 \leq 1.0000001:\\
\;\;\;\;0.16666666666666666 \cdot {x_m}^{2}\\
\mathbf{else}:\\
\;\;\;\;\log t_0\\
\end{array}
\end{array}
if (/.f64 (sinh.f64 x) x) < 1.00000010000000006Initial program 56.5%
Taylor expanded in x around 0 99.7%
if 1.00000010000000006 < (/.f64 (sinh.f64 x) x) Initial program 58.1%
Final simplification97.4%
x_m = (fabs.f64 x) (FPCore (x_m) :precision binary64 (* 0.16666666666666666 (pow x_m 2.0)))
x_m = fabs(x);
double code(double x_m) {
return 0.16666666666666666 * pow(x_m, 2.0);
}
x_m = abs(x)
real(8) function code(x_m)
real(8), intent (in) :: x_m
code = 0.16666666666666666d0 * (x_m ** 2.0d0)
end function
x_m = Math.abs(x);
public static double code(double x_m) {
return 0.16666666666666666 * Math.pow(x_m, 2.0);
}
x_m = math.fabs(x) def code(x_m): return 0.16666666666666666 * math.pow(x_m, 2.0)
x_m = abs(x) function code(x_m) return Float64(0.16666666666666666 * (x_m ^ 2.0)) end
x_m = abs(x); function tmp = code(x_m) tmp = 0.16666666666666666 * (x_m ^ 2.0); end
x_m = N[Abs[x], $MachinePrecision] code[x$95$m_] := N[(0.16666666666666666 * N[Power[x$95$m, 2.0], $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
x_m = \left|x\right|
\\
0.16666666666666666 \cdot {x_m}^{2}
\end{array}
Initial program 56.6%
Taylor expanded in x around 0 95.6%
Final simplification95.6%
x_m = (fabs.f64 x) (FPCore (x_m) :precision binary64 0.0)
x_m = fabs(x);
double code(double x_m) {
return 0.0;
}
x_m = abs(x)
real(8) function code(x_m)
real(8), intent (in) :: x_m
code = 0.0d0
end function
x_m = Math.abs(x);
public static double code(double x_m) {
return 0.0;
}
x_m = math.fabs(x) def code(x_m): return 0.0
x_m = abs(x) function code(x_m) return 0.0 end
x_m = abs(x); function tmp = code(x_m) tmp = 0.0; end
x_m = N[Abs[x], $MachinePrecision] code[x$95$m_] := 0.0
\begin{array}{l}
x_m = \left|x\right|
\\
0
\end{array}
Initial program 56.6%
Taylor expanded in x around 0 53.3%
Final simplification53.3%
(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 2024019
(FPCore (x)
:name "bug500, discussion (missed optimization)"
:precision binary64
:herbie-target
(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)))
(log (/ (sinh x) x)))