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[Bug middle-end/77925] New: Add __builtin_issubnormal


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77925

            Bug ID: 77925
           Summary: Add __builtin_issubnormal
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jsm28 at gcc dot gnu.org
  Target Milestone: ---

TS 18661-1 defines an issubnormal type-generic floating-point classification
macro.  GCC should have a corresponding type-generic built-in function
__builtin_issubnormal.  As with other such type-generic classification
functions it should be included in the cases in c-typeck.c:convert_arguments
that remove excess precision.

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