1CREAL(3P)                  POSIX Programmer's Manual                 CREAL(3P)
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PROLOG

6       This  manual  page is part of the POSIX Programmer's Manual.  The Linux
7       implementation of this interface may differ (consult the  corresponding
8       Linux  manual page for details of Linux behavior), or the interface may
9       not be implemented on Linux.
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NAME

12       creal, crealf, creall - complex real functions
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SYNOPSIS

15       #include <complex.h>
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17       double creal(double complex z);
18       float crealf(float complex z);
19       long double creall(long double complex z);
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DESCRIPTION

23       These functions shall compute the real part of z.
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RETURN VALUE

26       These functions shall return the real part value.
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ERRORS

29       No errors are defined.
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31       The following sections are informative.
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EXAMPLES

34       None.
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APPLICATION USAGE

37       For a variable z of type complex:
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40              z == creal(z) + cimag(z)*I
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RATIONALE

43       None.
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FUTURE DIRECTIONS

46       None.
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SEE ALSO

49       carg(), cimag(),  conj(),  cproj(),  the  Base  Definitions  volume  of
50       IEEE Std 1003.1-2001, <complex.h>
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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
61       at http://www.opengroup.org/unix/online.html .
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65IEEE/The Open Group                  2003                            CREAL(3P)
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