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creal
Langue: en
Version: 2008-08-11 (MeeGo - 06/11/10)
Section: 3 (Bibliothèques de fonctions)
NAME
creal, crealf, creall - get real part of a complex numberSYNOPSIS
#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.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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