OsIsNotValidNumber
From OpenSimulator
{osslfunc
|function_syntax=integer osIsNotValidNumber(float d)
|threat_level=ignored
|permissions=true
|delay=0
|description= Returns 0 (false) if d is a valid float, else returns:
1 - if it is a NaN
2 - if it is a Negative Infinity
3 - if it is a Positive Infinity
|additional_info=Added in 0.9.1.0 Oct, 17Th; OS_APIVERSION = 10 }