\sqrt{\frac{e^{2 \cdot x} - 1}{e^{x} - 1}}\begin{array}{l}
\mathbf{if}\;x \le -1.15639988716910344 \cdot 10^{-5}:\\
\;\;\;\;\sqrt{\left(\sqrt{e^{2 \cdot x}} + \sqrt{1}\right) \cdot \frac{\sqrt{e^{2 \cdot x}} - \sqrt{1}}{e^{x} - 1}}\\
\mathbf{else}:\\
\;\;\;\;\sqrt{x \cdot \left(1 + 0.5 \cdot x\right) + 2}\\
\end{array}double f(double x) {
double r13634 = 2.0;
double r13635 = x;
double r13636 = r13634 * r13635;
double r13637 = exp(r13636);
double r13638 = 1.0;
double r13639 = r13637 - r13638;
double r13640 = exp(r13635);
double r13641 = r13640 - r13638;
double r13642 = r13639 / r13641;
double r13643 = sqrt(r13642);
return r13643;
}
double f(double x) {
double r13644 = x;
double r13645 = -1.1563998871691034e-05;
bool r13646 = r13644 <= r13645;
double r13647 = 2.0;
double r13648 = r13647 * r13644;
double r13649 = exp(r13648);
double r13650 = sqrt(r13649);
double r13651 = 1.0;
double r13652 = sqrt(r13651);
double r13653 = r13650 + r13652;
double r13654 = r13650 - r13652;
double r13655 = exp(r13644);
double r13656 = r13655 - r13651;
double r13657 = r13654 / r13656;
double r13658 = r13653 * r13657;
double r13659 = sqrt(r13658);
double r13660 = 0.5;
double r13661 = r13660 * r13644;
double r13662 = r13651 + r13661;
double r13663 = r13644 * r13662;
double r13664 = r13663 + r13647;
double r13665 = sqrt(r13664);
double r13666 = r13646 ? r13659 : r13665;
return r13666;
}



Bits error versus x
Results
if x < -1.1563998871691034e-05Initial program 0.1
rmApplied *-un-lft-identity0.1
Applied add-sqr-sqrt0.1
Applied add-sqr-sqrt0.1
Applied difference-of-squares0.0
Applied times-frac0.0
Simplified0.0
if -1.1563998871691034e-05 < x Initial program 34.9
Taylor expanded around 0 6.4
Simplified6.4
Final simplification0.8
herbie shell --seed 2020036
(FPCore (x)
:name "sqrtexp (problem 3.4.4)"
:precision binary64
(sqrt (/ (- (exp (* 2 x)) 1) (- (exp x) 1))))