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