/* csin.c */
/*
Contributed by Danny Smith
2003-10-20
*/
#include <math.h>
#include <complex.h>
/* csin (x + I * y) = sin (x) * cosh (y)
+ I * (cos (x) * sinh (y)) */
double complex csin (double complex Z)
{
double complex Res;
__real__ Res = sin (__real__ Z) * cosh ( __imag__ Z);
__imag__ Res = cos (__real__ Z) * sinh ( __imag__ Z);
return Res;
}