std::fegetexceptflag, std::fesetexceptflag

 

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Defined in header <cfenv>
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.