creal(3M)

NAME

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

SYNOPSIS

#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);

DESCRIPTION

These functions are available only for Itanium-based systems.

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.

USAGE

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.

ERRORS

No errors are defined.

STANDARDS CONFORMANCE

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

creal(3M)

Technical documentation

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