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Command: creall | Section: 3 | Source: NetBSD | File: creall.3
CREAL(3) FreeBSD Library Functions Manual CREAL(3)
NAME
creal, crealf, creall - complex real functions
SYNOPSIS
#include <complex.h>
double
creal(double complex z);
float
crealf(float complex z);
long double
creall(long double complex z);
#include <tgmath.h>
complex-float
creal(complex-float z);
DESCRIPTION
These functions compute the real part of z.
RETURN VALUES
These functions return the real part value.
ERRORS
No errors are defined.
APPLICATION USAGE
For a variable z of type complex:
z == creal(z) + cimag(z)*I
SEE ALSO
carg(3), cimag(3), conj(3), cproj(3), IEEE Std 1003.1-2001 ("POSIX.1")
<complex.h>
COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
-- Portable Operating System Interface (POSIX), The Open Group Base
Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
Electrical and Electronics Engineers, Inc and The Open Group. In the
event of any discrepancy between this version and the original IEEE and
The Open Group Standard, the original IEEE and The Open Group Standard is
the referee document. The original Standard can be obtained online at
http://www.opengroup.org/unix/online.html .
FreeBSD 14.1-RELEASE-p8 September 27, 2017 FreeBSD 14.1-RELEASE-p8