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fetestexcept(3m) [opensolaris man page]

fetestexcept(3M)					  Mathematical Library Functions					  fetestexcept(3M)

NAME
fetestexcept - test floating-point exception flags SYNOPSIS
c99 [ flag... ] file... -lm [ library... ] #include <fenv.h> int fetestexcept(int excepts); DESCRIPTION
The fetestexcept() function determines which of a specified subset of the floating-point exception flags are currently set. The excepts argument specifies the floating-point status flags to be queried. RETURN VALUES
The fetestexcept() function returns the value of the bitwise-inclusive OR of the floating-point exception macros corresponding to the cur- rently set floating-point exceptions included in excepts. ERRORS
No errors are defined. EXAMPLES
Example 1 Example using fetestexcept() The following example calls function f( ) if an invalid exception is set, and then function g( ) if an overflow exception is set: #include <fenv.h> /* ... */ { # pragma STDC FENV_ACCESS ON int set_excepts; feclearexcept(FE_INVALID | FE_OVERFLOW); // maybe raise exceptions set_excepts = fetestexcept(FE_INVALID | FE_OVERFLOW); if (set_excepts & FE_INVALID) f(); if (set_excepts & FE_OVERFLOW) g(); /* ... */ } ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
feclearexcept(3M), fegetexceptflag(3M), fenv.h(3HEAD), attributes(5), standards(5) SunOS 5.11 12 Jul 2006 fetestexcept(3M)

Check Out this Related Man Page

FETESTEXCEPT(3P)					     POSIX Programmer's Manual						  FETESTEXCEPT(3P)

PROLOG
This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the correspond- ing Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux. NAME
fetestexcept -- test floating-point exception flags SYNOPSIS
#include <fenv.h> int fetestexcept(int excepts); DESCRIPTION
The functionality described on this reference page is aligned with the ISO C standard. Any conflict between the requirements described here and the ISO C standard is unintentional. This volume of POSIX.1-2008 defers to the ISO C standard. The fetestexcept() function shall determine which of a specified subset of the floating-point exception flags are currently set. The excepts argument specifies the floating-point status flags to be queried. RETURN VALUE
The fetestexcept() function shall return the value of the bitwise-inclusive OR of the floating-point exception macros corresponding to the currently set floating-point exceptions included in excepts. ERRORS
No errors are defined. The following sections are informative. EXAMPLES
The following example calls function f() if an invalid exception is set, and then function g() if an overflow exception is set: #include <fenv.h> /* ... */ { #pragma STDC FENV_ACCESS ON int set_excepts; feclearexcept(FE_INVALID | FE_OVERFLOW); // maybe raise exceptions set_excepts = fetestexcept(FE_INVALID | FE_OVERFLOW); if (set_excepts & FE_INVALID) f(); if (set_excepts & FE_OVERFLOW) g(); /* ... */ } APPLICATION USAGE
None. RATIONALE
None. FUTURE DIRECTIONS
None. SEE ALSO
feclearexcept(), fegetexceptflag(), feraiseexcept() The Base Definitions volume of POSIX.1-2008, <fenv.h> COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2013 Edition, Standard for Information Technol- ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 7, Copyright (C) 2013 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) 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 Stan- dard is the referee document. The original Standard can be obtained online at http://www.unix.org/online.html . Any typographical or formatting errors that appear in this page are most likely to have been introduced during the conversion of the source files to man page format. To report such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html . IEEE
/The Open Group 2013 FETESTEXCEPT(3P)

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