1FEGETEXCEPTFLAG(3P)        POSIX Programmer's Manual       FEGETEXCEPTFLAG(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

13       fegetexceptflag, fesetexceptflag — get and  set  floating-point  status
14       flags
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SYNOPSIS

17       #include <fenv.h>
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19       int fegetexceptflag(fexcept_t *flagp, int excepts);
20       int fesetexceptflag(const fexcept_t *flagp, int excepts);
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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.
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28       The fegetexceptflag() function shall attempt to  store  an  implementa‐
29       tion-defined  representation of the states of the floating-point status
30       flags indicated by the argument excepts in the object pointed to by the
31       argument flagp.
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33       The  fesetexceptflag() function shall attempt to set the floating-point
34       status flags indicated by the argument excepts to the states stored  in
35       the  object  pointed  to by flagp.  The value pointed to by flagp shall
36       have been set by a previous  call  to  fegetexceptflag()  whose  second
37       argument  represented  at  least those floating-point exceptions repre‐
38       sented by the argument excepts.  This function does not raise floating-
39       point exceptions, but only sets the state of the flags.
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RETURN VALUE

42       If  the representation was successfully stored, fegetexceptflag() shall
43       return zero. Otherwise, it  shall  return  a  non-zero  value.  If  the
44       excepts  argument  is zero or if all the specified exceptions were suc‐
45       cessfully set, fesetexceptflag() shall return zero. Otherwise, it shall
46       return a non-zero value.
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ERRORS

49       No errors are defined.
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51       The following sections are informative.
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EXAMPLES

54       None.
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APPLICATION USAGE

57       None.
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RATIONALE

60       None.
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FUTURE DIRECTIONS

63       None.
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SEE ALSO

66       feclearexcept(), feraiseexcept(), fetestexcept()
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68       The Base Definitions volume of POSIX.1‐2008, <fenv.h>
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71       Portions  of  this text are reprinted and reproduced in electronic form
72       from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
73       --  Portable  Operating  System  Interface (POSIX), The Open Group Base
74       Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
75       cal  and  Electronics  Engineers,  Inc  and  The  Open Group.  (This is
76       POSIX.1-2008 with the 2013 Technical Corrigendum  1  applied.)  In  the
77       event of any discrepancy between this version and the original IEEE and
78       The Open Group Standard, the original IEEE and The Open Group  Standard
79       is  the  referee document. The original Standard can be obtained online
80       at http://www.unix.org/online.html .
81
82       Any typographical or formatting errors that appear  in  this  page  are
83       most likely to have been introduced during the conversion of the source
84       files to man page format. To report such errors,  see  https://www.ker‐
85       nel.org/doc/man-pages/reporting_bugs.html .
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89IEEE/The Open Group                  2013                  FEGETEXCEPTFLAG(3P)
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