1FEHOLDEXCEPT(P)            POSIX Programmer's Manual           FEHOLDEXCEPT(P)
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NAME

6       feholdexcept - save current floating-point environment
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SYNOPSIS

9       #include <fenv.h>
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11       int feholdexcept(fenv_t *envp);
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DESCRIPTION

15       The feholdexcept() function shall save the current floating-point envi‐
16       ronment in the object pointed to by envp, clear the floating-point sta‐
17       tus  flags,  and  then  install  a non-stop (continue on floating-point
18       exceptions) mode, if available, for all floating-point exceptions.
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RETURN VALUE

21       The feholdexcept() function shall return zero if and only  if  non-stop
22       floating-point exception handling was successfully installed.
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ERRORS

25       No errors are defined.
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27       The following sections are informative.
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EXAMPLES

30       None.
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APPLICATION USAGE

33       None.
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RATIONALE

36       The   feholdexcept()   function   should   be   effective   on  typical
37       IEC 60559:1989 standard implementations which have the default non-stop
38       mode  and at least one other mode for trap handling or aborting. If the
39       implementation provides only the non-stop  mode,  then  installing  the
40       non-stop mode is trivial.
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FUTURE DIRECTIONS

43       None.
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SEE ALSO

46       fegetenv()  ,  fesetenv() , feupdateenv() , the Base Definitions volume
47       of IEEE Std 1003.1-2001, <fenv.h>
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50       Portions of this text are reprinted and reproduced in  electronic  form
51       from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
52       -- Portable Operating System Interface (POSIX),  The  Open  Group  Base
53       Specifications  Issue  6,  Copyright  (C) 2001-2003 by the Institute of
54       Electrical and Electronics Engineers, Inc and The Open  Group.  In  the
55       event of any discrepancy between this version and the original IEEE and
56       The Open Group Standard, the original IEEE and The Open Group  Standard
57       is  the  referee document. The original Standard can be obtained online
58       at http://www.opengroup.org/unix/online.html .
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62IEEE/The Open Group                  2003                      FEHOLDEXCEPT(P)
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