[Bug libc/11365] New: nearbyintf(float) does not get correct result for 2886220.75 and 3058792.75

[Bug libc/11365] New: nearbyintf(float) does not get correct result for 2886220.75 and 3058792.75

[xcr dot code at gmail dot com]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain, Size: 1861 bytes --]

Hi,
When I use a 64bit mode to compile nearbyintf(float), it will get wrong result 
for float number 2886220.75 and 3058792.75
I think this is a bug for /lib64/tls/libm.so.6


===the result...
nearbyintf(2886220.660000)      ==> 2886220.000000
nearbyintf(2886220.690000)      ==> 2886220.000000
nearbyintf(2886220.720000)      ==> 2886220.000000
nearbyintf(2886220.750000)      ==> 2886220.000000    //Wrong result...     
nearbyintf(2886220.780000)      ==> 2886220.000000
nearbyintf(2886220.810000)      ==> 2886220.000000
nearbyintf(2886220.840000)      ==> 2886220.000000
nearbyintf(2886220.870000)      ==> 2886220.000000
nearbyintf(2886220.900000)      ==> 2886221.000000
nearbyintf(2886220.930000)      ==> 2886221.000000
nearbyintf(2886220.960000)      ==> 2886221.000000

==Env========================================================
Linux oshcsc7b5 2.6.9-78.ELsmp #1 SMP Wed Jul 9 15:46:26 EDT 2008 x86_64 unknown 
unknown GNU/Linux
Reading specs from /tool/pandora64/.package/gcc-4.2.2/lib/gcc/x86_64-unknown-
linux-gnu/4.2.2/specs
Target: x86_64-unknown-linux-gnu
Configured with: ../configure --prefix=/tool/pandora64/.package/gcc-4.2.2
Thread model: posix
gcc version 4.2.2

-- 
           Summary: nearbyintf(float) does not get correct result for
                    2886220.75 and 3058792.75
           Product: glibc
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: libc
        AssignedTo: drepper at redhat dot com
        ReportedBy: xcr dot code at gmail dot com
                CC: glibc-bugs at sources dot redhat dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=11365

------- You are receiving this mail because: -------
You are on the CC list for the bug, or are watching someone who is.

[Bug libc/11365] nearbyintf(float) does not get correct result for 2886220.75 and 3058792.75

[xcr dot code at gmail dot com]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |critical
             Status|NEW                         |WAITING
           Priority|P2                          |P1


http://sourceware.org/bugzilla/show_bug.cgi?id=11365

------- You are receiving this mail because: -------
You are on the CC list for the bug, or are watching someone who is.

[Bug math/11365] nearbyintf(float) does not get correct result for 2886220.75 and 3058792.75

[pasky at suse dot cz]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |NEW
          Component|libc                        |math
   Last reconfirmed|0000-00-00 00:00:00         |2010-06-01 03:56:46
               date|                            |


http://sourceware.org/bugzilla/show_bug.cgi?id=11365

------- You are receiving this mail because: -------
You are on the CC list for the bug, or are watching someone who is.