*Synopsis*: [ku1] libast/ksh93 1-digit hexfloat base conversion rounds 
incorrectly

CR 6789247 changed on Oct 23 2009 by <User 1-7MTUEB>

=== Field ============ === New Value ============= === Old Value =============

Commit to Fix in Build snv_127                                                
Status                 7-Fix in Progress           6-Fix Understood           
====================== =========================== ===========================

     
*Change Request ID*: 6789247

*Synopsis*: [ku1] libast/ksh93 1-digit hexfloat base conversion rounds 
incorrectly

  Product: solaris
  Category: shell
  Subcategory: korn93
  Type: Defect
  Subtype: 
  Status: 7-Fix in Progress
  Substatus: 
  Priority: 4-Low
  Introduced In Release: solaris_nevada
  Introduced In Build: snv_72
  Responsible Engineer: <User 1-7MTUEB>
  Keywords: opensolaris, oss-request, oss-sponsor

=== *Description* ============================================================
Category
   shell
Sub-Category
   korn
Description
   [The same issue was described in 
http://mail.opensolaris.org/pipermail/ksh93-integration-discuss/2008-December/006737.html]
This is basically a spin-off of 
http://bugs.opensolaris.org/view_bug.do?bug_id=6773712 ("1-digit hex fp
base conversion of long double rounds incorrectly").
The bug description for Solaris libc says this:
> The first line of output from this program is correct.  The second line
> is not.
> 
> leviathan% cat a.c
> #include <stdio.h>
> 
> int main()
> {
> printf("%.0a\n", 1.5);
> printf("%.0La\n", 1.5L);
> return 0;
> }
> leviathan% cc -o a a.c
> leviathan% a
> 0x1p+1
> 0x1p+0
> leviathan%
If I compile the testcase with libast on Solaris 11/B84 SPARC (which
matches ast-open.2008-11-04) I get this:
-- snip --
$ cc -xc99=%all -I/usr/include/ast -last a.c -o a &&
./a                                             
0x1p+00
0x1p+00
-- snip --
... which seems to be incorrect per the bugs comment above and should
be:
-- snip --
0x1p+1
0x1p+1
-- snip --
ksh93 has the same problem:
$ ksh93 -c 'float r=1.5 ; printf "%.0a\n" r'
0x1p+00
Frequency
   Always
Regression
   No
Steps to Reproduce
   Compile and run testcase like this:
-- snip --
$ cc -xc99=%all -I/usr/include/ast -last a.c -o a &&
./a                                             
-- snip --
Expected Result
   0x1p+1
0x1p+1
Actual Result
   0x1p+00
0x1p+00
Error Message(s)
   None
Test Case
   #include <stdio.h>
int main()
{
printf("%.0a\n", 1.5);
printf("%.0La\n", 1.5L);
return 0;
}
Workaround
   -
Submitter wants to work on bug
   Yes
Additional configuration information
   Solaris 11/B84 with ksh93-integration update1 (="ku1") codebase applied

*** (#1 of 1): 2008-12-27 20:38:14 GMT+00:00 <User 1-F4SZV>


=== *Public Comments* ========================================================

=== *Workaround* =============================================================

=== *Additional Details* =====================================================
        Targeted Release: solaris_nevada
        Commit To Fix In Build: snv_127
        Fixed In Build: 
        Integrated In Build: 
        Verified In Build: 
  See Also: 4764104, 6773712, 6793763
  Duplicate of: 
  Hooks:
        Hook1: 
        Hook2: 
        Hook3: 
        Hook4: 
        Hook5: <email address omitted>
        Hook6: <email address omitted>
  Program Management: 
  Root Cause: Insufficient Testing
  Fix Affects Documentation: No
  Fix Affects Localization: No

=== *History* ================================================================
        Date Submitted: 2008-12-27 20:38:11 GMT+00:00
        Submitted By: <User 1-F4SZV>

        Status Changed    Date Updated                  Updated By
        3-Accepted        2009-02-24 13:53:32 GMT+00:00 <User 1-1SURPB>
        6-Fix Understood  2009-06-16 15:29:06 GMT+00:00 <User 1-1SURPB>
        7-Fix in Progress 2009-10-23 17:33:02 GMT+00:00 <User 1-7MTUEB>


=== *Service Request* ========================================================
        Impact: Limited
        Functionality: Nonessential
        Severity: 5
        Product Name: solaris
        Product Release: solaris_nevada
        Product Build: snv_01
        Operating System: solaris_nevada
        Hardware: generic
        Submitted Date: 2008-12-27 20:38:14 GMT+00:00


=== *Multiple Release (MR) Cluster* - 0 ======================================

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