creal man page on Hurd

creal man page on Hurd

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

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
       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
   Multithreading (see pthreads(7))
       The creal(), crealf(), and creall() functions are thread-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 3.55 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/.

				  2013-09-18			      CREAL(3)

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