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* [Bug math/17257] New: erf generates spurious underflow for long-double-128
@ 2014-08-11 22:05 davem at davemloft dot net
  2014-08-11 22:31 ` [Bug math/17257] " joseph at codesourcery dot com
  2015-09-15 16:23 ` [Bug math/17257] [sparc] " jsm28 at gcc dot gnu.org
  0 siblings, 2 replies; 3+ messages in thread
From: davem at davemloft dot net @ 2014-08-11 22:05 UTC (permalink / raw)
  To: glibc-bugs

https://sourceware.org/bugzilla/show_bug.cgi?id=17257

            Bug ID: 17257
           Summary: erf generates spurious underflow for long-double-128
           Product: glibc
           Version: 2.20
            Status: NEW
          Severity: normal
          Priority: P2
         Component: math
          Assignee: unassigned at sourceware dot org
          Reporter: davem at davemloft dot net

On sparc 32-bit and 64-bit, test-ldouble fails as follows:

Failure: erf (0x3.8b7f12369ded5518p-16384): Exception "Underflow" set
Failure: erf_downward (0x3.8b7f12369ded5518p-16384): Exception "Underflow" set
Failure: erf_towardzero (0x3.8b7f12369ded5518p-16384): Exception "Underflow"
set
Failure: erf_upward (0x3.8b7f12369ded5518p-16384): Exception "Underflow" set

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* [Bug math/17257] erf generates spurious underflow for long-double-128
  2014-08-11 22:05 [Bug math/17257] New: erf generates spurious underflow for long-double-128 davem at davemloft dot net
@ 2014-08-11 22:31 ` joseph at codesourcery dot com
  2015-09-15 16:23 ` [Bug math/17257] [sparc] " jsm28 at gcc dot gnu.org
  1 sibling, 0 replies; 3+ messages in thread
From: joseph at codesourcery dot com @ 2014-08-11 22:31 UTC (permalink / raw)
  To: glibc-bugs

https://sourceware.org/bugzilla/show_bug.cgi?id=17257

--- Comment #1 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
I do *not* see these on mips64 (n32), for which I'm currently running 
tests (with GCC 4.9, so supporting exceptions for long double).  Such 
failures were supposed to be fixed by the fix for bug 16516; you may have 
some architecture-specific issue here.

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* [Bug math/17257] [sparc] erf generates spurious underflow for long-double-128
  2014-08-11 22:05 [Bug math/17257] New: erf generates spurious underflow for long-double-128 davem at davemloft dot net
  2014-08-11 22:31 ` [Bug math/17257] " joseph at codesourcery dot com
@ 2015-09-15 16:23 ` jsm28 at gcc dot gnu.org
  1 sibling, 0 replies; 3+ messages in thread
From: jsm28 at gcc dot gnu.org @ 2015-09-15 16:23 UTC (permalink / raw)
  To: glibc-bugs

https://sourceware.org/bugzilla/show_bug.cgi?id=17257

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
               Host|                            |sparc*-*-*
            Summary|erf generates spurious      |[sparc] erf generates
                   |underflow for               |spurious underflow for
                   |long-double-128             |long-double-128

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end of thread, other threads:[~2015-09-15 16:23 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2014-08-11 22:05 [Bug math/17257] New: erf generates spurious underflow for long-double-128 davem at davemloft dot net
2014-08-11 22:31 ` [Bug math/17257] " joseph at codesourcery dot com
2015-09-15 16:23 ` [Bug math/17257] [sparc] " jsm28 at gcc dot gnu.org

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