coshl
long double coshl(long double);
extern long double coshl(long double);
using ::coshl;
extern long double coshl(long double);
inline long double cosh(long double __X) { return coshl(__X); }
extern long double coshl(long double);
extern long double coshl(long double);
LD_RE(ans) = C * coshl(x);
LD_IM(ans) = S * coshl(x);