2 .\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved
3 .TH "CREAL" 3P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"
6 creal, crealf \- complex real functions
9 \fB#include <complex.h>
12 double creal(double complex\fP \fIz\fP\fB);
14 float crealf(float complex\fP \fIz\fP\fB);
19 These functions compute the real part of \fIz\fP.
22 These functions return the real part value.
25 No errors are defined.
27 \fIThe following sections are informative.\fP
33 For a variable \fIz\fP of type \fBcomplex\fP:
38 \fBz == creal(z) + cimag(z)*I
50 \fIcarg\fP(), \fIcimag\fP(), \fIconj\fP(), \fIcproj\fP(), the
51 Base Definitions volume of IEEE\ Std\ 1003.1-2001, \fI<complex.h>\fP
53 Portions of this text are reprinted and reproduced in electronic form
54 from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
55 -- Portable Operating System Interface (POSIX), The Open Group Base
56 Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
57 Electrical and Electronics Engineers, Inc and The Open Group. In the
58 event of any discrepancy between this version and the original IEEE and
59 The Open Group Standard, the original IEEE and The Open Group Standard
60 is the referee document. The original Standard can be obtained online at
61 http://www.opengroup.org/unix/online.html .