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man:creall

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

     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).
     allbox; lbw27 lb lb l l l.  Interface Attribute Value T{ creal(),  cre-
     alf(), creall() T}   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

     This  page  is  part of release 4.16 of the Linux man-pages project.  A
     description of the project, information about reporting bugs,  and  the
     latest     version     of     this    page,    can    be    found    at
     https://www.kernel.org/doc/man-pages/.
                                2015-04-19                          CREAL(3)
/data/webs/external/dokuwiki/data/pages/man/creall.txt · Last modified: 2019/05/17 09:32 by 127.0.0.1

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