Jump to content United States-English
HP.com Home Products and Services Support and Drivers Solutions How to Buy
» Contact HP
More options
HP.com home
HP-UX Reference > C


HP Integrity Server Only
HP-UX 11i Version 3: February 2007

Technical documentation

» Feedback
Content starts here

 » Table of Contents

 » Index


creal(), crealf(), creall(), crealw(), crealq() — the real part of a complex value


#include <complex.h>

double creal(double complex z);

float crealf(float complex z);

long double creall(long double complex z);

extended crealw(extended complex z);

quad crealq(quad complex z);


These functions are available only for Integrity servers.

creal() returns the real part of z.

crealf() is a float complex version of creal(); it takes a float complex argument and returns a float result.

creall() is a long double complex version of creal(); it takes a long double complex argument and returns a long double result.

crealw() is an extended complex version of creal(); it takes an extended complex argument and returns an extended result.

crealq() is equivalent to creall() on HP-UX systems.

These functions raise no exceptions.


To use these functions, compile with the default -Ae option. To use crealw() or crealq(), compile with the -fpwidetypes option. Make sure your program includes <complex.h>. Link in the math library by specifying -lm on the compiler or linker command line.


No errors are defined.


creal(), crealf(), creall() : ISO/IEC C99 (including Annex G, ``IEC 60559-compatible complex arithmetic'')

Printable version
Privacy statement Using this site means you accept its terms Feedback to webmaster
© 1983-2007 Hewlett-Packard Development Company, L.P.