SuSE 11.3 - man page for creal (suse section 3P)
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CREAL(3P) POSIX Programmer's Manual CREAL(3P)
This manual page is part of the POSIX Programmer's Manual. The Linux implementation of
this interface may differ (consult the corresponding Linux manual page for details of
Linux behavior), or the interface may not be implemented on Linux.
creal, crealf, creall - complex real functions
double creal(double complex z);
float crealf(float complex z);
long double creall(long double complex z);
These functions shall compute the real part of z.
These functions shall return the real part value.
No errors are defined.
The following sections are informative.
For a variable z of type complex:
z == creal(z) + cimag(z)*I
carg(), cimag(), conj(), cproj(), the Base Definitions volume of IEEE Std 1003.1-2001,
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 orig-
inal Standard can be obtained online at http://www.opengroup.org/unix/online.html .
IEEE/The Open Group 2003 CREAL(3P)
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