HELPLIB.HLB  —  RTL Routines, LIB$  LIB$FLT_UNDER
    The Floating-Point Underflow Detection routine enables or
    disables floating-point underflow detection for the calling
    routine activation. The previous setting is returned as a
    function value.

    This routine is available on OpenVMS Alpha and I64 systems in
    translated form and is applicable to translated VAX images only.

    Format

      LIB$FLT_UNDER  new-setting
Additional Information: explode extract
Returns Argument
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