use __expo2 in sinh and cosh, move __cexp to cmath
[libm] / src / cmath / casinh.c
1 #include "libm.h"
2
3 /* asinh(z) = -i asin(i z) */
4
5 double complex casinh(double complex z)
6 {
7         z = casin(cpack(-cimag(z), creal(z)));
8         return cpack(cimag(z), -creal(z));
9 }