Returns the real part of its complex argument.

    This function is supported on OpenVMS Integrity servers and
    Alpha only.

    Format

      #include  <complex.h>

      double creal  (double complex z);

      float crealf  (float complex z);

      long double creall  (long double complex z);

1 - Argument

 z

    A complex value.

2 - Description

    The creal functions return the real part of z.

3 - Return Values

    x                  The real part value.