Fixes are available
APAR status
Closed as program error.
Error description
Enabling decimal floating point support via -qdfp on builds using -qarch=pwr8 is generating calls to the DFP emulate library instead of generating hardware instructions. Adding the -qfloat=nodfpemulate option to force DFP hardware calls results in the following message: 1540-2142 (W) "-qfloat=nodfpemulate" is not compatible with "-qarch=pwr8". "-qfloat=dfpemulate" is being set.
Local fix
Compile code using -qarch=pwr7
Problem summary
PROBLEM DESCRIPTION: Compiler was not generating hardware decimal floating point instructions when -qarch=pwr8 was set. USERS AFFECTED: Users compiling DFP code for use on POWER8 systems.
Problem conclusion
A fix was implemented, and the -qarch=pwr8 option now generates hardware DFP instructions.
Temporary fix
Comments
APAR Information
APAR number
LI78234
Reported component name
XL C/C++ FOR LI
Reported component ID
5725C7300
Reported release
D10
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2014-10-30
Closed date
2014-10-30
Last modified date
2014-10-30
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
XL C/C++ FOR LI
Fixed component ID
5725C7300
Applicable component levels
RD10 PSN IV61518
UP06/09/13
[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSXVZZ","label":"XL C\/C++ for Linux"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"13.1","Line of Business":{"code":"LOB57","label":"Power"}}]
Document Information
Modified date:
17 October 2021