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CREAL

Linux Programmer's Manual (3)
2013-09-18
 

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

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Index

NAME
SYNOPSIS
DESCRIPTION
VERSIONS
ATTRIBUTES
Multithreading (see pthreads(7))
CONFORMING TO
NOTES
SEE ALSO
COLOPHON

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Time: 21:42:59 GMT, July 12, 2014