[Bug math/19125] New: [powerpc32] llroundf, llround incorrect exceptions

[jsm28 at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=19125

            Bug ID: 19125
           Summary: [powerpc32] llroundf, llround incorrect exceptions
           Product: glibc
           Version: 2.22
            Status: NEW
          Severity: normal
          Priority: P2
         Component: math
          Assignee: unassigned at sourceware dot org
          Reporter: jsm28 at gcc dot gnu.org
  Target Milestone: ---
              Host: powerpc*-*-*

The powerpc32 implementations of llroundf and llround produce spurious and
missing exceptions (some arising from such exceptions from conversions to long
long, some present even when fctidz is used).  E.g., for float:

Failure: llround (qNaN): Exception "Inexact" set
Failure: llround (-qNaN): Exception "Inexact" set
Failure: llround (max_value): Exception "Inexact" set
Failure: llround (-max_value): Exception "Inexact" set
Failure: llround (0x1p31): Exception "Inexact" set
Failure: llround (0x1p63): Exception "Invalid operation" not set
Failure: llround (0x1p64): Exception "Inexact" set
Failure: llround (0x1p65): Exception "Inexact" set
Failure: llround (-0x1p31): Exception "Inexact" set
Failure: llround (-0x1p64): Exception "Inexact" set
Failure: llround (-0x1p65): Exception "Inexact" set
Failure: llround (0x7fffff80p0): Exception "Inexact" set
Failure: llround (-0x80000100p0): Exception "Inexact" set
Failure: llround (-0x8000010000000000p0): Exception "Invalid operation" not set
Failure: llround (2097151.0): Exception "Inexact" set
Failure: llround (8388608.0): Exception "Inexact" set
Failure: llround (16777216.0): Exception "Inexact" set
Failure: llround (4503601774854144.0): Exception "Inexact" set
Failure: llround (0x1.fffffep+23): Exception "Inexact" set
Failure: llround (-0x1.fffffep+23): Exception "Inexact" set
Failure: llround (0x1.000002p+23): Exception "Inexact" set
Failure: llround (-0x1.000002p+23): Exception "Inexact" set
Failure: llround (0x1.fffffep+23): Exception "Inexact" set
Failure: llround (-0x1.fffffep+23): Exception "Inexact" set

plus similar in other rounding modes.

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