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).
┌────────────────────────────┬───────────────┬─────────┐
│Interface │ Attribute │ Value │
├────────────────────────────┼───────────────┼─────────┤
│creal(), crealf(), creall() │ 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 ALSOcabs(3), cimag(3), complex(7)COLOPHON
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latest version of this page, can be found at
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2015-04-19 CREAL(3)