1CABS(3P)                   POSIX Programmer's Manual                  CABS(3P)
2
3
4

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.
10
11

NAME

13       cabs, cabsf, cabsl — return a complex absolute value
14

SYNOPSIS

16       #include <complex.h>
17
18       double cabs(double complex z);
19       float cabsf(float complex z);
20       long double cabsl(long double complex z);
21

DESCRIPTION

23       The functionality described on this reference page is aligned with  the
24       ISO C  standard.  Any  conflict between the requirements described here
25       and the ISO C standard is unintentional. This  volume  of  POSIX.1‐2008
26       defers to the ISO C standard.
27
28       These  functions  shall compute the complex absolute value (also called
29       norm, modulus, or magnitude) of z.
30

RETURN VALUE

32       These functions shall return the complex absolute value.
33

ERRORS

35       No errors are defined.
36
37       The following sections are informative.
38

EXAMPLES

40       None.
41

APPLICATION USAGE

43       None.
44

RATIONALE

46       None.
47

FUTURE DIRECTIONS

49       None.
50

SEE ALSO

52       The Base Definitions volume of POSIX.1‐2008, <complex.h>
53

55       Portions of this text are reprinted and reproduced in  electronic  form
56       from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
57       -- Portable Operating System Interface (POSIX),  The  Open  Group  Base
58       Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
59       cal and Electronics Engineers,  Inc  and  The  Open  Group.   (This  is
60       POSIX.1-2008  with  the  2013  Technical Corrigendum 1 applied.) In the
61       event of any discrepancy between this version and the original IEEE and
62       The  Open Group Standard, the original IEEE and The Open Group Standard
63       is the referee document. The original Standard can be  obtained  online
64       at http://www.unix.org/online.html .
65
66       Any  typographical  or  formatting  errors that appear in this page are
67       most likely to have been introduced during the conversion of the source
68       files  to  man page format. To report such errors, see https://www.ker‐
69       nel.org/doc/man-pages/reporting_bugs.html .
70
71
72
73IEEE/The Open Group                  2013                             CABS(3P)
Impressum