csin(3) Library Functions Manual csin(3) csin, csinf, csinl - (libm -lm) #include double complex csin(double complex z); float complex csinf(float complex z); long double complex csinl(long double complex z); z. : csin(z) = (exp(i * z) - exp(-i * z)) / (2 * i) attributes(7). +------------+------------------------------------+--------------------+ || | | +------------+------------------------------------+--------------------+ |csin(), | | MT-Safe | |csinf(), | | | |csinl() | | | +------------+------------------------------------+--------------------+ C11, POSIX.1-2008. glibc 2.1. C99 POSIX.1-2001. cabs(3), casin(3), ccos(3), ctan(3), complex(7) 3 . . : . 6.18 8 2026 csin(3)