Intel® Fortran Libraries Reference

Descriptions of the Library Routines 2See Also: the intrinsic function DFLOAT in the Language ReferenceIEEE_FLAGSPortability Function: Gets, sets or clears IEEE* flags for rounding direction and precision aswell as queries or controls exception status. This function provides easy access to the modes andstatus required to use the features of IEEE Standard 754-1985 arithmetic in a Fortran program.Module: USE IFPORTSyntaxresult = IEEE_FLAGS (action, mode, in, out)action(Input) Character*(*). One of the following literal values: 'GET', 'SET', 'CLEAR', or'CLEARALL'.mode(Input) Character*(*). One of the following literal values: 'direction', 'precision', or 'exception'.The value 'precision' is only allowed on IA-32 systems.in(Input) Character*(*). One of the following literal values: 'inexact', 'division', 'underflow','overflow', 'invalid', 'all', 'common', 'nearest', 'tozero', 'negative', 'positive', 'extended', 'double','single', or ' ', which represents an unused (null) value.out(Output) Must be at least CHARACTER*9. One of the literal values listed for in.The descriptions for the values allowed for in and out can be summarized as follows:Value'nearest''tozero''negative''positive''single''double''extended''inexact''underflow''overflow''division''invalid'DescriptionRounding direction flagsRounding precision flagsMath exception flags2-165