
(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}
(FPCore (x)
:precision binary64
(if (<= (/ (sinh x) x) 2.0)
(fma
x
(* x 0.16666666666666666)
(+
(* 0.0003527336860670194 (pow x 6.0))
(* -0.005555555555555556 (pow x 4.0))))
(log (/ (- (exp x) (exp (- x))) (/ x 0.5)))))
double code(double x) {
double tmp;
if ((sinh(x) / x) <= 2.0) {
tmp = fma(x, (x * 0.16666666666666666), ((0.0003527336860670194 * pow(x, 6.0)) + (-0.005555555555555556 * pow(x, 4.0))));
} else {
tmp = log(((exp(x) - exp(-x)) / (x / 0.5)));
}
return tmp;
}
function code(x) tmp = 0.0 if (Float64(sinh(x) / x) <= 2.0) tmp = fma(x, Float64(x * 0.16666666666666666), Float64(Float64(0.0003527336860670194 * (x ^ 6.0)) + Float64(-0.005555555555555556 * (x ^ 4.0)))); else tmp = log(Float64(Float64(exp(x) - exp(Float64(-x))) / Float64(x / 0.5))); end return tmp end
code[x_] := If[LessEqual[N[(N[Sinh[x], $MachinePrecision] / x), $MachinePrecision], 2.0], N[(x * N[(x * 0.16666666666666666), $MachinePrecision] + N[(N[(0.0003527336860670194 * N[Power[x, 6.0], $MachinePrecision]), $MachinePrecision] + N[(-0.005555555555555556 * N[Power[x, 4.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[Log[N[(N[(N[Exp[x], $MachinePrecision] - N[Exp[(-x)], $MachinePrecision]), $MachinePrecision] / N[(x / 0.5), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;\frac{\sinh x}{x} \leq 2:\\
\;\;\;\;\mathsf{fma}\left(x, x \cdot 0.16666666666666666, 0.0003527336860670194 \cdot {x}^{6} + -0.005555555555555556 \cdot {x}^{4}\right)\\
\mathbf{else}:\\
\;\;\;\;\log \left(\frac{e^{x} - e^{-x}}{\frac{x}{0.5}}\right)\\
\end{array}
\end{array}
if (/.f64 (sinh.f64 x) x) < 2Initial program 57.2%
Taylor expanded in x around inf 2.7%
associate-*r/2.7%
*-commutative2.7%
associate-/l*2.7%
rec-exp2.6%
Simplified2.6%
Taylor expanded in x around 0 99.7%
*-commutative99.7%
unpow299.7%
associate-*l*99.7%
fma-def99.7%
associate-+r+99.7%
+-commutative99.7%
fma-def99.7%
fma-def99.7%
*-commutative99.7%
Simplified99.7%
Taylor expanded in x around 0 99.8%
fma-udef99.8%
Applied egg-rr99.8%
if 2 < (/.f64 (sinh.f64 x) x) Initial program 70.8%
Taylor expanded in x around inf 71.0%
associate-*r/71.0%
*-commutative71.0%
associate-/l*71.0%
rec-exp71.0%
Simplified71.0%
Final simplification98.6%
(FPCore (x)
:precision binary64
(if (<= (/ (sinh x) x) 2.0)
(+
(* -0.005555555555555556 (pow x 4.0))
(+ (* 0.0003527336860670194 (pow x 6.0)) (* 0.16666666666666666 (* x x))))
(log (/ (- (exp x) (exp (- x))) (/ x 0.5)))))
double code(double x) {
double tmp;
if ((sinh(x) / x) <= 2.0) {
tmp = (-0.005555555555555556 * pow(x, 4.0)) + ((0.0003527336860670194 * pow(x, 6.0)) + (0.16666666666666666 * (x * x)));
} else {
tmp = log(((exp(x) - exp(-x)) / (x / 0.5)));
}
return tmp;
}
real(8) function code(x)
real(8), intent (in) :: x
real(8) :: tmp
if ((sinh(x) / x) <= 2.0d0) then
tmp = ((-0.005555555555555556d0) * (x ** 4.0d0)) + ((0.0003527336860670194d0 * (x ** 6.0d0)) + (0.16666666666666666d0 * (x * x)))
else
tmp = log(((exp(x) - exp(-x)) / (x / 0.5d0)))
end if
code = tmp
end function
public static double code(double x) {
double tmp;
if ((Math.sinh(x) / x) <= 2.0) {
tmp = (-0.005555555555555556 * Math.pow(x, 4.0)) + ((0.0003527336860670194 * Math.pow(x, 6.0)) + (0.16666666666666666 * (x * x)));
} else {
tmp = Math.log(((Math.exp(x) - Math.exp(-x)) / (x / 0.5)));
}
return tmp;
}
def code(x): tmp = 0 if (math.sinh(x) / x) <= 2.0: tmp = (-0.005555555555555556 * math.pow(x, 4.0)) + ((0.0003527336860670194 * math.pow(x, 6.0)) + (0.16666666666666666 * (x * x))) else: tmp = math.log(((math.exp(x) - math.exp(-x)) / (x / 0.5))) return tmp
function code(x) tmp = 0.0 if (Float64(sinh(x) / x) <= 2.0) tmp = Float64(Float64(-0.005555555555555556 * (x ^ 4.0)) + Float64(Float64(0.0003527336860670194 * (x ^ 6.0)) + Float64(0.16666666666666666 * Float64(x * x)))); else tmp = log(Float64(Float64(exp(x) - exp(Float64(-x))) / Float64(x / 0.5))); end return tmp end
function tmp_2 = code(x) tmp = 0.0; if ((sinh(x) / x) <= 2.0) tmp = (-0.005555555555555556 * (x ^ 4.0)) + ((0.0003527336860670194 * (x ^ 6.0)) + (0.16666666666666666 * (x * x))); else tmp = log(((exp(x) - exp(-x)) / (x / 0.5))); end tmp_2 = tmp; end
code[x_] := If[LessEqual[N[(N[Sinh[x], $MachinePrecision] / x), $MachinePrecision], 2.0], N[(N[(-0.005555555555555556 * N[Power[x, 4.0], $MachinePrecision]), $MachinePrecision] + N[(N[(0.0003527336860670194 * N[Power[x, 6.0], $MachinePrecision]), $MachinePrecision] + N[(0.16666666666666666 * N[(x * x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[Log[N[(N[(N[Exp[x], $MachinePrecision] - N[Exp[(-x)], $MachinePrecision]), $MachinePrecision] / N[(x / 0.5), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;\frac{\sinh x}{x} \leq 2:\\
\;\;\;\;-0.005555555555555556 \cdot {x}^{4} + \left(0.0003527336860670194 \cdot {x}^{6} + 0.16666666666666666 \cdot \left(x \cdot x\right)\right)\\
\mathbf{else}:\\
\;\;\;\;\log \left(\frac{e^{x} - e^{-x}}{\frac{x}{0.5}}\right)\\
\end{array}
\end{array}
if (/.f64 (sinh.f64 x) x) < 2Initial program 57.2%
Taylor expanded in x around inf 2.7%
associate-*r/2.7%
*-commutative2.7%
associate-/l*2.7%
rec-exp2.6%
Simplified2.6%
Taylor expanded in x around 0 99.7%
*-commutative99.7%
unpow299.7%
associate-*l*99.7%
fma-def99.7%
associate-+r+99.7%
+-commutative99.7%
fma-def99.7%
fma-def99.7%
*-commutative99.7%
Simplified99.7%
Taylor expanded in x around 0 99.8%
fma-udef99.7%
*-commutative99.7%
fma-udef99.7%
associate-+r+99.7%
associate-*r*99.7%
*-commutative99.7%
associate-*l*99.7%
Applied egg-rr99.7%
if 2 < (/.f64 (sinh.f64 x) x) Initial program 70.8%
Taylor expanded in x around inf 71.0%
associate-*r/71.0%
*-commutative71.0%
associate-/l*71.0%
rec-exp71.0%
Simplified71.0%
Final simplification98.6%
(FPCore (x)
:precision binary64
(let* ((t_0 (/ (sinh x) x)))
(if (<= t_0 2.0)
(+
(* -0.005555555555555556 (pow x 4.0))
(+
(* 0.0003527336860670194 (pow x 6.0))
(* 0.16666666666666666 (* x x))))
(log t_0))))
double code(double x) {
double t_0 = sinh(x) / x;
double tmp;
if (t_0 <= 2.0) {
tmp = (-0.005555555555555556 * pow(x, 4.0)) + ((0.0003527336860670194 * pow(x, 6.0)) + (0.16666666666666666 * (x * x)));
} else {
tmp = log(t_0);
}
return tmp;
}
real(8) function code(x)
real(8), intent (in) :: x
real(8) :: t_0
real(8) :: tmp
t_0 = sinh(x) / x
if (t_0 <= 2.0d0) then
tmp = ((-0.005555555555555556d0) * (x ** 4.0d0)) + ((0.0003527336860670194d0 * (x ** 6.0d0)) + (0.16666666666666666d0 * (x * x)))
else
tmp = log(t_0)
end if
code = tmp
end function
public static double code(double x) {
double t_0 = Math.sinh(x) / x;
double tmp;
if (t_0 <= 2.0) {
tmp = (-0.005555555555555556 * Math.pow(x, 4.0)) + ((0.0003527336860670194 * Math.pow(x, 6.0)) + (0.16666666666666666 * (x * x)));
} else {
tmp = Math.log(t_0);
}
return tmp;
}
def code(x): t_0 = math.sinh(x) / x tmp = 0 if t_0 <= 2.0: tmp = (-0.005555555555555556 * math.pow(x, 4.0)) + ((0.0003527336860670194 * math.pow(x, 6.0)) + (0.16666666666666666 * (x * x))) else: tmp = math.log(t_0) return tmp
function code(x) t_0 = Float64(sinh(x) / x) tmp = 0.0 if (t_0 <= 2.0) tmp = Float64(Float64(-0.005555555555555556 * (x ^ 4.0)) + Float64(Float64(0.0003527336860670194 * (x ^ 6.0)) + Float64(0.16666666666666666 * Float64(x * x)))); else tmp = log(t_0); end return tmp end
function tmp_2 = code(x) t_0 = sinh(x) / x; tmp = 0.0; if (t_0 <= 2.0) tmp = (-0.005555555555555556 * (x ^ 4.0)) + ((0.0003527336860670194 * (x ^ 6.0)) + (0.16666666666666666 * (x * x))); else tmp = log(t_0); end tmp_2 = tmp; end
code[x_] := Block[{t$95$0 = N[(N[Sinh[x], $MachinePrecision] / x), $MachinePrecision]}, If[LessEqual[t$95$0, 2.0], N[(N[(-0.005555555555555556 * N[Power[x, 4.0], $MachinePrecision]), $MachinePrecision] + N[(N[(0.0003527336860670194 * N[Power[x, 6.0], $MachinePrecision]), $MachinePrecision] + N[(0.16666666666666666 * N[(x * x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[Log[t$95$0], $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := \frac{\sinh x}{x}\\
\mathbf{if}\;t_0 \leq 2:\\
\;\;\;\;-0.005555555555555556 \cdot {x}^{4} + \left(0.0003527336860670194 \cdot {x}^{6} + 0.16666666666666666 \cdot \left(x \cdot x\right)\right)\\
\mathbf{else}:\\
\;\;\;\;\log t_0\\
\end{array}
\end{array}
if (/.f64 (sinh.f64 x) x) < 2Initial program 57.2%
Taylor expanded in x around inf 2.7%
associate-*r/2.7%
*-commutative2.7%
associate-/l*2.7%
rec-exp2.6%
Simplified2.6%
Taylor expanded in x around 0 99.7%
*-commutative99.7%
unpow299.7%
associate-*l*99.7%
fma-def99.7%
associate-+r+99.7%
+-commutative99.7%
fma-def99.7%
fma-def99.7%
*-commutative99.7%
Simplified99.7%
Taylor expanded in x around 0 99.8%
fma-udef99.7%
*-commutative99.7%
fma-udef99.7%
associate-+r+99.7%
associate-*r*99.7%
*-commutative99.7%
associate-*l*99.7%
Applied egg-rr99.7%
if 2 < (/.f64 (sinh.f64 x) x) Initial program 70.8%
Final simplification98.6%
(FPCore (x)
:precision binary64
(let* ((t_0 (/ (sinh x) x)))
(if (<= t_0 1.000005)
(fma x (* x 0.16666666666666666) (* -0.005555555555555556 (pow x 4.0)))
(log t_0))))
double code(double x) {
double t_0 = sinh(x) / x;
double tmp;
if (t_0 <= 1.000005) {
tmp = fma(x, (x * 0.16666666666666666), (-0.005555555555555556 * pow(x, 4.0)));
} else {
tmp = log(t_0);
}
return tmp;
}
function code(x) t_0 = Float64(sinh(x) / x) tmp = 0.0 if (t_0 <= 1.000005) tmp = fma(x, Float64(x * 0.16666666666666666), Float64(-0.005555555555555556 * (x ^ 4.0))); else tmp = log(t_0); end return tmp end
code[x_] := Block[{t$95$0 = N[(N[Sinh[x], $MachinePrecision] / x), $MachinePrecision]}, If[LessEqual[t$95$0, 1.000005], N[(x * N[(x * 0.16666666666666666), $MachinePrecision] + N[(-0.005555555555555556 * N[Power[x, 4.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[Log[t$95$0], $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := \frac{\sinh x}{x}\\
\mathbf{if}\;t_0 \leq 1.000005:\\
\;\;\;\;\mathsf{fma}\left(x, x \cdot 0.16666666666666666, -0.005555555555555556 \cdot {x}^{4}\right)\\
\mathbf{else}:\\
\;\;\;\;\log t_0\\
\end{array}
\end{array}
if (/.f64 (sinh.f64 x) x) < 1.00000500000000003Initial program 57.1%
Taylor expanded in x around inf 2.4%
associate-*r/2.4%
*-commutative2.4%
associate-/l*2.4%
rec-exp2.4%
Simplified2.4%
Taylor expanded in x around 0 99.7%
*-commutative99.7%
unpow299.7%
associate-*l*99.7%
fma-def99.7%
Simplified99.7%
if 1.00000500000000003 < (/.f64 (sinh.f64 x) x) Initial program 71.6%
Final simplification98.5%
(FPCore (x)
:precision binary64
(let* ((t_0 (/ (sinh x) x)))
(if (<= t_0 1.000005)
(+ (* -0.005555555555555556 (pow x 4.0)) (* x (* x 0.16666666666666666)))
(log t_0))))
double code(double x) {
double t_0 = sinh(x) / x;
double tmp;
if (t_0 <= 1.000005) {
tmp = (-0.005555555555555556 * pow(x, 4.0)) + (x * (x * 0.16666666666666666));
} else {
tmp = log(t_0);
}
return tmp;
}
real(8) function code(x)
real(8), intent (in) :: x
real(8) :: t_0
real(8) :: tmp
t_0 = sinh(x) / x
if (t_0 <= 1.000005d0) then
tmp = ((-0.005555555555555556d0) * (x ** 4.0d0)) + (x * (x * 0.16666666666666666d0))
else
tmp = log(t_0)
end if
code = tmp
end function
public static double code(double x) {
double t_0 = Math.sinh(x) / x;
double tmp;
if (t_0 <= 1.000005) {
tmp = (-0.005555555555555556 * Math.pow(x, 4.0)) + (x * (x * 0.16666666666666666));
} else {
tmp = Math.log(t_0);
}
return tmp;
}
def code(x): t_0 = math.sinh(x) / x tmp = 0 if t_0 <= 1.000005: tmp = (-0.005555555555555556 * math.pow(x, 4.0)) + (x * (x * 0.16666666666666666)) else: tmp = math.log(t_0) return tmp
function code(x) t_0 = Float64(sinh(x) / x) tmp = 0.0 if (t_0 <= 1.000005) tmp = Float64(Float64(-0.005555555555555556 * (x ^ 4.0)) + Float64(x * Float64(x * 0.16666666666666666))); else tmp = log(t_0); end return tmp end
function tmp_2 = code(x) t_0 = sinh(x) / x; tmp = 0.0; if (t_0 <= 1.000005) tmp = (-0.005555555555555556 * (x ^ 4.0)) + (x * (x * 0.16666666666666666)); else tmp = log(t_0); end tmp_2 = tmp; end
code[x_] := Block[{t$95$0 = N[(N[Sinh[x], $MachinePrecision] / x), $MachinePrecision]}, If[LessEqual[t$95$0, 1.000005], N[(N[(-0.005555555555555556 * N[Power[x, 4.0], $MachinePrecision]), $MachinePrecision] + N[(x * N[(x * 0.16666666666666666), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[Log[t$95$0], $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := \frac{\sinh x}{x}\\
\mathbf{if}\;t_0 \leq 1.000005:\\
\;\;\;\;-0.005555555555555556 \cdot {x}^{4} + x \cdot \left(x \cdot 0.16666666666666666\right)\\
\mathbf{else}:\\
\;\;\;\;\log t_0\\
\end{array}
\end{array}
if (/.f64 (sinh.f64 x) x) < 1.00000500000000003Initial program 57.1%
Taylor expanded in x around 0 99.7%
fma-def99.7%
unpow299.7%
Simplified99.7%
fma-udef99.7%
*-commutative99.7%
associate-*r*99.7%
Applied egg-rr99.7%
if 1.00000500000000003 < (/.f64 (sinh.f64 x) x) Initial program 71.6%
Final simplification98.5%
(FPCore (x) :precision binary64 (+ (* -0.005555555555555556 (pow x 4.0)) (* 0.16666666666666666 (* x x))))
double code(double x) {
return (-0.005555555555555556 * pow(x, 4.0)) + (0.16666666666666666 * (x * x));
}
real(8) function code(x)
real(8), intent (in) :: x
code = ((-0.005555555555555556d0) * (x ** 4.0d0)) + (0.16666666666666666d0 * (x * x))
end function
public static double code(double x) {
return (-0.005555555555555556 * Math.pow(x, 4.0)) + (0.16666666666666666 * (x * x));
}
def code(x): return (-0.005555555555555556 * math.pow(x, 4.0)) + (0.16666666666666666 * (x * x))
function code(x) return Float64(Float64(-0.005555555555555556 * (x ^ 4.0)) + Float64(0.16666666666666666 * Float64(x * x))) end
function tmp = code(x) tmp = (-0.005555555555555556 * (x ^ 4.0)) + (0.16666666666666666 * (x * x)); end
code[x_] := N[(N[(-0.005555555555555556 * N[Power[x, 4.0], $MachinePrecision]), $MachinePrecision] + N[(0.16666666666666666 * N[(x * x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
-0.005555555555555556 \cdot {x}^{4} + 0.16666666666666666 \cdot \left(x \cdot x\right)
\end{array}
Initial program 57.7%
Taylor expanded in x around 0 95.9%
fma-def95.9%
unpow295.9%
Simplified95.9%
add-sqr-sqrt95.7%
fma-udef95.7%
*-commutative95.7%
associate-*r*95.8%
fma-def95.8%
fma-udef95.8%
*-commutative95.8%
associate-*r*95.8%
fma-def95.8%
Applied egg-rr95.8%
add-sqr-sqrt96.0%
fma-udef95.9%
*-commutative95.9%
*-commutative95.9%
associate-*l*95.9%
Applied egg-rr95.9%
Final simplification95.9%
(FPCore (x) :precision binary64 (+ (* -0.005555555555555556 (pow x 4.0)) (* x (* x 0.16666666666666666))))
double code(double x) {
return (-0.005555555555555556 * pow(x, 4.0)) + (x * (x * 0.16666666666666666));
}
real(8) function code(x)
real(8), intent (in) :: x
code = ((-0.005555555555555556d0) * (x ** 4.0d0)) + (x * (x * 0.16666666666666666d0))
end function
public static double code(double x) {
return (-0.005555555555555556 * Math.pow(x, 4.0)) + (x * (x * 0.16666666666666666));
}
def code(x): return (-0.005555555555555556 * math.pow(x, 4.0)) + (x * (x * 0.16666666666666666))
function code(x) return Float64(Float64(-0.005555555555555556 * (x ^ 4.0)) + Float64(x * Float64(x * 0.16666666666666666))) end
function tmp = code(x) tmp = (-0.005555555555555556 * (x ^ 4.0)) + (x * (x * 0.16666666666666666)); end
code[x_] := N[(N[(-0.005555555555555556 * N[Power[x, 4.0], $MachinePrecision]), $MachinePrecision] + N[(x * N[(x * 0.16666666666666666), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
-0.005555555555555556 \cdot {x}^{4} + x \cdot \left(x \cdot 0.16666666666666666\right)
\end{array}
Initial program 57.7%
Taylor expanded in x around 0 95.9%
fma-def95.9%
unpow295.9%
Simplified95.9%
fma-udef95.9%
*-commutative95.9%
associate-*r*95.9%
Applied egg-rr95.9%
Final simplification95.9%
(FPCore (x) :precision binary64 (* 0.16666666666666666 (* x x)))
double code(double x) {
return 0.16666666666666666 * (x * x);
}
real(8) function code(x)
real(8), intent (in) :: x
code = 0.16666666666666666d0 * (x * x)
end function
public static double code(double x) {
return 0.16666666666666666 * (x * x);
}
def code(x): return 0.16666666666666666 * (x * x)
function code(x) return Float64(0.16666666666666666 * Float64(x * x)) end
function tmp = code(x) tmp = 0.16666666666666666 * (x * x); end
code[x_] := N[(0.16666666666666666 * N[(x * x), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
0.16666666666666666 \cdot \left(x \cdot x\right)
\end{array}
Initial program 57.7%
Taylor expanded in x around 0 95.6%
unpow295.6%
Simplified95.6%
Final simplification95.6%
(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(x * Float64(x * 0.16666666666666666)) end
function tmp = code(x) tmp = x * (x * 0.16666666666666666); end
code[x_] := N[(x * N[(x * 0.16666666666666666), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x \cdot \left(x \cdot 0.16666666666666666\right)
\end{array}
Initial program 57.7%
Taylor expanded in x around 0 95.6%
unpow295.6%
Simplified95.6%
Taylor expanded in x around 0 95.6%
*-commutative95.6%
unpow295.6%
associate-*l*95.6%
Simplified95.6%
Final simplification95.6%
(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 2023203
(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)))