std::fegetexceptflag,std::fesetexceptflag

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Floating-point environment

Functions
feclearexcept (C++11)
fetestexcept (C++11)
feraiseexcept (C++11)
fegetexceptflagfesetexceptflag (C++11)(C++11)
fegetroundfesetround (C++11)(C++11)
fegetenvfesetenv (C++11)(C++11)
feholdexcept (C++11)
feupdateenv (C++11)
Macro constants
FE_ALL_EXCEPTFE_DIVBYZEROFE_INEXACTFE_INVALIDFE_OVERFLOWFE_UNDERFLOW (C++11)(C++11)(C++11)(C++11)(C++11)(C++11)
FE_DOWNWARDFE_TONEARESTFE_TOWARDZEROFE_UPWARD (C++11)(C++11)(C++11)(C++11)
FE_DFL_ENV (C++11)

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Defined in header`<cfenv>`
int fegetexceptflag(std::fexcept_t* flagp,int excepts);	(1)	(since C++11)
int fesetexceptflag(conststd::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 argumentexcepts, which is a bitwise OR of thefloating point exception macros.

2) Attempts to copy the full contents of the floating-point exception flags that are listed inexcepts fromflagp 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 inflagp in implementation-defined format.