D1num D1num_sub IsFinite IsFinite_sub IsInf IsInf_sub IsNan IsNan_sub IsNormal IsNormal_sub Signbit Signbit_sub

IsFinite() Function IsFinite ( X As  Double ) Determine if finite value Purpose IsFinite determines if the given argument has finite value, i.e. it is not infinite nor NaN (Not-a-Number). Returns Boolean If X has finite value, True is returned. Otherwise, False is returned. The subnormal value is regarded as finite. Parameters [in] X Argument to be examined.