NAME¶

std::fegetexceptflag,std::fesetexceptflag - std::fegetexceptflag,std::fesetexceptflag

Synopsis¶

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.

See also¶