Sets the state of an exception flag.
long fesetexceptflag(const fexcept_t *f, long e);
f Pointer to the source location from which the exception flag state is to be acquired
e Value indicating the exception flag whose state is to be set
Before calling the fesetexceptflag function, specify a flag state in the source location through the fegetexceptflag function.
The fesetexceptflag function only sets the flag state without generating the corresponding floating-point exception.
Do not use this function when compiler option nofpu is selected. If used, the function returns a nonzero value, which indicates an abnormality.