[Bug math/15750] New: Various functions raise FE_INEXACT when the results are exact and representable

[Bug math/15750] New: Various functions raise FE_INEXACT when the results are exact and representable

[gcc.hall at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=15750

            Bug ID: 15750
           Summary: Various functions raise FE_INEXACT when the results
                    are exact and representable
           Product: glibc
           Version: 2.16
            Status: NEW
          Severity: normal
          Priority: P2
         Component: math
          Assignee: unassigned at sourceware dot org
          Reporter: gcc.hall at gmail dot com

Examples are log10(100), cbrt(27), exp10(2), log2(2), pow(4.0, 0.5)

These all return the correct exact value, but FE_INEXACT is raised.

-- 
You are receiving this mail because:
You are on the CC list for the bug.

[Bug math/15750] Various functions raise FE_INEXACT when the results are exact and representable

[gcc.hall at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=15750

Jeremy <gcc.hall at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |gcc.hall at gmail dot com

-- 
You are receiving this mail because:
You are on the CC list for the bug.

[Bug math/15750] Various functions raise FE_INEXACT when the results are exact and representable

[jsm28 at gcc dot gnu.org]

http://sourceware.org/bugzilla/show_bug.cgi?id=15750

Joseph Myers <jsm28 at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |INVALID

--- Comment #1 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
None of these are functions (such as fma or sqrt) for which Annex F specifies
correct "inexact" exceptions, and as such correctly raising or not raising
"inexact" for them is outside the goals for correctness of results that I
described at <http://sourceware.org/ml/libc-alpha/2013-05/msg00132.html>.

If you find bugs that are bugs according to the goals as described there,
please file separate bugs in Bugzilla for each function, and each distinct
issue (missing exceptions / spurious exceptions / inaccurate return value /
missing errno / incorrect errno), after checking the bug isn't already filed;
omnibus bug reports about "various functions" should be avoided, as liable to
lead to a long time when a bug is partly fixed, a state Bugzilla is not good at
tracking.  (A single bug can cover all of the float, double and long double
versions of a function, if they appear to share an issue.)

-- 
You are receiving this mail because:
You are on the CC list for the bug.

[Bug math/15750] Various functions raise FE_INEXACT when the results are exact and representable

[fweimer at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=15750

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
              Flags|                            |security-

-- 
You are receiving this mail because:
You are on the CC list for the bug.