[LLVMbugs] [Bug 14897] New: complex divide: finite / infinity wrong

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Thu Jan 10 08:16:33 PST 2013


             Bug #: 14897
           Summary: complex divide: finite / infinity wrong
           Product: clang
           Version: 3.1
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: -New Bugs
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: tydeman at tybor.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

(0.0+0.0*I) / (inf+inf*I) should be (0.0+0.0*I), not (nan+nan*I)
Similar failures happen for:
(max+max*I) / (inf+inf*I)
(max+max*I) / (fin+nan*I)

This is a requirement of Annex G of C99 and C11.
  G.5.1#4, item 3:
  if the first operand is a finite number and the second operand is
  an infinity, then the result of the / operator is a zero;

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