NAME

       creal, crealf, creall - complex real functions

SYNOPSIS

       #include <complex.h>

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

DESCRIPTION

       These functions shall compute the real part of z.

RETURN VALUE

       These functions shall return the real part value.

ERRORS

       No errors are defined.

       The following sections are informative.

EXAMPLES

       None.

APPLICATION USAGE

       For a variable z of type complex:

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

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       carg() , cimag() , conj() , cproj() , the Base Definitions volume of IEEE Std 1003.1-2001,
       <complex.h>

COPYRIGHT

       Portions of this text are reprinted and  reproduced  in  electronic  form  from  IEEE  Std
       1003.1,  2003  Edition,  Standard  for Information Technology -- Portable Operating System
       Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003  by
       the  Institute  of  Electrical  and  Electronics Engineers, Inc and The Open Group. In the
       event of any discrepancy between this version and the original IEEE  and  The  Open  Group
       Standard,  the  original  IEEE  and  The  Open Group Standard is the referee document. The
       original Standard can be obtained online at http://www.opengroup.org/unix/online.html .