fesetexceptflag

Parameters

flagp

Pointer to a fexcept_t object with a representation of floating-point exceptions.
The value pointed by flagp shall have been previously set by a call to fegetexceptflag with at least the exceptions specified by excepts.

excepts

Bitmask value: A combination (with bitwise OR) of any number of floating-point exception values supported by the implementation:

macro value	description
FE_DIVBYZERO	Pole error: division by zero, or some other asymptotically infinite result (from finite arguments).
FE_INEXACT	Inexact: the result is not exact.
FE_INVALID	Domain error: At least one of the arguments is a value for which the function is not defined.
FE_OVERFLOW	Overflow range error: The result is too large in magnitude to be represented as a value of the return type.
FE_UNDERFLOW	Underflow range error: The result is too small in magnitude to be represented as a value of the return type.
FE_ALL_EXCEPT	All exceptions (selects all of the exceptions supported by the implementation).

Certain library implementations may support additional floating-point exception values (with their corresponding macros also beginning with FE_).

Libraries may define in <fenv.h> only the macro values above they support (the others may not be defined).

At least all of the above macro values are defined in <cfenv> (even if not supported by the implementation).

Return Value

Data races

Exceptions

See also

fegetexceptflag

Get floating-point exception flags (function)

feraiseexcept

Raise floating-point exception (function)