[C6713] Catching floating point exceptions in C

DSP: 6713
CCS: 3.1

My question revolves around using floating point exceptions in C. 
Are there some examples that may show me how trap an FP exception?

Also,  I would like to be able to detect if a floating point
variable is a NaN (Not a Number) or a properly formatted variable. 
We will be using data copied in from an FPGA via the HPI (Host-Post Interface).  This data may
not be formatted in the correct FP format.  I need assistance to determine
if the value can be accessed as a FP variable or if I need to initialize
the value to a default value.

Thanks for any assistance you can offer.

 Dan