creal(3) Library Functions Manual creal(3) creal, crealf, creall - (libm -lm) #include double creal(double complex z); float crealf(float complex z); long double creall(long double complex z); z. : z = creal(z) + I * cimag(z) attributes(7). +------------+------------------------------------+--------------------+ || | | +------------+------------------------------------+--------------------+ |creal(), | | MT-Safe | |crealf(), | | | |creall() | | | +------------+------------------------------------+--------------------+ GCC __real__. GNU. C11, POSIX.1-2008. glibc 2.1. C99 POSIX.1-2001. cabs(3), cimag(3), complex(7) 3 . . : . 6.18 8 2026 creal(3)