CREAL(3) Linux Programmer's Manual CREAL(3)

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

SYNOPSIS
       #include 

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

       Link with -lm.

DESCRIPTION
       The creal() function returns 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.

NOTES
       The gcc supports also real.  That is a GNU extension.

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

COLOPHON
       This page is part of release 3.53 of the Linux  man-pages  project.   A
       description  of  the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.



                                  2008-08-11                          CREAL(3)