NAME

       creal, crealf, creall - get real part of a complex number

SYNOPSIS

       #include <complex.h>

       double creal(double complex z);
       float crealf(float complex z);
       long double creall(long double complex z);

       Link with -lm.

DESCRIPTION

       These functions return the real part of the complex number z.

       One has:

           z = creal(z) + I * cimag(z)

VERSIONS

       These functions first appeared in glibc in version 2.1.

ATTRIBUTES

       For an explanation of the terms used in this section, see attributes(7).
       ┌─────────────────────────────┬───────────────┬─────────┐
       │ Interface                   │ Attribute     │ Value   │
       ├─────────────────────────────┼───────────────┼─────────┤
       │ creal(), crealf(), creall() │ Thread safety │ MT-Safe │
       └─────────────────────────────┴───────────────┴─────────┘

CONFORMING TO

       C99, POSIX.1-2001, POSIX.1-2008.

NOTES

       The gcc supports also __real__.  That is a GNU extension.

SEE ALSO

       cabs(3), cimag(3), complex(7)

COLOPHON

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                                                   2015-04-19                                           CREAL(3)