csqrt(3) Library Functions Manual csqrt(3) csqrt, csqrtf, csqrtl - (libm -lm) #include double complex csqrt(double complex z); float complex csqrtf(float complex z); long double complex csqrtl(long double complex z); z . ( csqrt(-1+eps*I) I csqrt(-1-eps*I) -I eps .) attributes(7). +------------+------------------------------------+--------------------+ || | | +------------+------------------------------------+--------------------+ |csqrt(), | | MT-Safe | |csqrtf(), | | | |csqrtl() | | | +------------+------------------------------------+--------------------+ C11, POSIX.1-2008. glibc 2.1. C99 POSIX.1-2001. cabs(3), cexp(3), complex(7) 3 . . : . 6.18 8 2026 csqrt(3)