Difference between revisions of "cpp/numeric/fenv/feexceptflag"
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Revision as of 07:27, 18 September 2017
| Defined in header <cfenv>
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| int fegetexceptflag( std::fexcept_t* flagp, int excepts ); |
(1) | (since C++11) |
| int fesetexceptflag( const std::fexcept_t* flagp, int excepts ); |
(2) | (since C++11) |
1) Attempts to obtain the full contents of the floating-point exception flags that are listed in the bitmask argument excepts, which is a bitwise OR of the floating point exception macros.
2) Attempts to copy the full contents of the floating-point exception flags that are listed in excepts from flagp into the floating-point environment. Does not raise any exceptions, only modifies the flags.
The full contents of a floating-point exception flag is not necessarily a boolean value indicating whether the exception is raised or cleared. For example, it may be a struct which includes the boolean status and the address of the code that triggered the exception. These functions obtain all such content and obtain/store it in flagp in implementation-defined format.
Parameters
| flagp | - | pointer to an std::fexcept_t object where the flags will be stored or read from |
| excepts | - | bitmask listing the exception flags to get/set |
Return value
0 on success, non-zero otherwise.
See Also
| C documentation for feexceptflag
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