Manual of CSIN(3) (v2.61)

Linux Programmer's Manual

NAME

csin, csinf, csinl - complex sine function

#include <complex.h>

double complex csin(double complex z);
float complex csinf(float complex z);
long double complex csinl(long double complex z);

Link with -lm.

The complex sine function csin(z) is defined as (exp(i*z)-exp(-i*z))/(2*i).

C99