6.5.3 fenv Exception Macros

Attention: These macros are implemented only by MPLAB XC32 C compilers when using a device with a FPU.

The following macros relate to floating-point exceptions.

Table 6-2. Floating-point exception macros
Macro	Description
`FE_DIVBYZERO`	The operation on finite numbers has produced a result that is infinity.
`FE_INEXACT`	The rounded result of an operation differs to the infinite precision result.
`FE_INVALID`	The result of the operation cannot be expressed as a value.
`FE_OVERFLOW`	The absolute value of the floating-point result is too large to be represented.
`FE_UNDERFLOW`	The absolute value of the floating-point result is smaller than the smallest positive normalized floating-point number.
`FE_ALL_EXCEPT`	The bitwise OR of the above floating-point exception macros.