initial cmath code and minor libm.h update
[libm] / src / cmath / csin.c
1 #include "libm.h"
2
3 double complex csin(double complex z)
4 {
5         double complex r;
6
7         r = csinh(cpack(-cimag(z), creal(z)));
8         return cpack(cimag(r), -creal(r));
9 }