sqrtl
extern long double sqrtl(long double x);
__imag__ res = copysignl (sqrtl (-__real__ x),
__real__ res = fabsl (sqrtl (__real__ x));
long double r = sqrtl (0.5 * fabsl (__imag__ x));
r = sqrtl (0.5L * d + 0.5L * __real__ x);
s = sqrtl (0.5L * d - 0.5L * __real__ x);
#define sqrt sqrtl
#define sqrtf sqrtl
return log1pl(x-1 + sqrtl((x-1)*(x-1)+2*(x-1)));
return logl(2*x - 1/(x+sqrtl(x*x-1)));
s = sqrtl(z);
s = sqrtl(z);
x = logl(2*x + 1/(sqrtl(x*x+1)+x));
x = log1pl(x + x*x/(sqrtl(x*x+1)+1));
s = sqrtl(z);
return z*sqrtl(ly+lx+hy+hx);