Thanks, Andreas. Just what I needed.
I see that the decimal.h header files are under /usr/include/4.5/ Does this mean I can't use them with gcc 4.3? Roger On Thu, 2014-10-09 at 09:32 +0200, Andreas Krebbel wrote: > On 10/09/2014 08:48 AM, roger wrote: > > Does anybody have any experience using decimal floating point libraries > > from C/C++ on Z-Linux? I have installed the libdfp1 library on > > SLES-11, but can't find any header files or documentation for its use. > > The requirement we have is for currency transactions according to > > Generally Accepted Accounting Practices. > > Hi, > > basic arithmetic with DFP numbers can be done with the language extensions > provided by GCC without > libdfp. Use the _Decimal64 and _Decimal128 data types (we don't have > hardware support for > _Decimal32) with at least the -march=z10 GCC option to generate DFP hardware > instructions. For prior > -march levels a DFP software implementation will be used. > > libdfp is only needed if you would like to use printf or math library > functions (like in libm for > bfp). The printf functionality in libdfp uses Glibc printf hooks to implement > additional format > letters for the existing Glibc printf function. > > Also libdfp can provide you with a way to compile applications able to run > with software and > hardware DFP decided at runtime depending on the CPU level. > > For more details you might want to have a look into our white paper available > on developerworks: > http://www.ibm.com/developerworks/linux/linux390/perf/tuning_compiler.html#dfp > > Bye, > > -Andreas- > > > > > ---------------------------------------------------------------------- > > For LINUX-390 subscribe / signoff / archive access instructions, > > send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or > > visit > > http://www.marist.edu/htbin/wlvindex?LINUX-390 > > ---------------------------------------------------------------------- > > For more information on Linux on System z, visit > > http://wiki.linuxvm.org/ > > > > ---------------------------------------------------------------------- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit > http://www.marist.edu/htbin/wlvindex?LINUX-390 > ---------------------------------------------------------------------- > For more information on Linux on System z, visit > http://wiki.linuxvm.org/ -- Roger Evans, Vitec Autodata Norge A/S mob: +47 93 25 92 36 http://www.autodata.no ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/
