I tried using libfp.a by using the -lfp option when linking and I even added -Wl,-L<prefix>/msp430/lib/msp1 to make sure it finds libfp.c. I'm sure it's finding libfp.c because it doesn't complain about the -lfp but if I misspell it (eg -lffp) it complains.
My problem is that I get the same binary out with the -lfp option as with out it. I have even tried -nodefaultlibs along with my other two options and it complains that it cannot find __mulsf3 and some other FP functions. Upon disassembly of libfp.a I see all the function that the linker is claiming not to find so I know they are there. I read a post in the mailing list archive that implied that all you needed was a -lfp. Am I still missing something? -Chris Takahashi -----Original Message----- From: Dmitry [mailto:di...@mail.ru] Sent: Friday, July 25, 2003 2:54 AM To: mspgcc-users@lists.sourceforge.net Subject: Re: [Mspgcc-users] Floating point Alternatives? check libfp which is available in msp430-libc ~d On Thursday 24 July 2003 20:44, Takahashi, Chris wrote: > Hi all, > > I was wondering if there are any alternatives to the current FP functions > in Libc? Looking at the code size for floating point functions in libc > versus the functions in IAR (1.26A) I get a considerable difference with > gcc coming out almost 3 times larger with the libs that are imported. One > example is _fpmul_parts is 542 bytes (gcc) while ?F_MUL_L04 is 120 bytes > (IAR). It is my understanding that this is because GCC implements FP math > with strict attention to IEEE spec. This is good for some applications and > Bad for others. In our application ROM space is of utmost importance and > as long as the math comes out to within a certain percent error it is fine. > Is there an alternative which would allow us to use smaller but possibly > non IEEE strict FP code? > > Thanks for all the help! > > > -Chris Takahashi > > > ------------------------------------------------------- > This SF.Net email sponsored by: Free pre-built ASP.NET sites including > Data Reports, E-commerce, Portals, and Forums are available now. > Download today and enter to win an XBOX or Visual Studio .NET. > http://aspnet.click-url.com/go/psa00100003ave/direct;at.aspnet_072303_01/01 > _______________________________________________ > Mspgcc-users mailing list > Mspgcc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/mspgcc-users -- /***************************************************************** ("`-''-/").___..--''"`-._ (\ Dimmy the Wild UA1ACZ `6_ 6 ) `-. ( ).`-.__.`) State Polytechnical Univ. (_Y_.)' ._ ) `._ `. ``-..-' Radio-Physics Departament _..`--'_..-_/ /--'_.' ,' Saint Petersburg, Russia (il),-'' (li),' ((!.-' +7 (812) 5403923, 5585314 *****************************************************************/ ------------------------------------------------------- This SF.Net email sponsored by: Free pre-built ASP.NET sites including Data Reports, E-commerce, Portals, and Forums are available now. Download today and enter to win an XBOX or Visual Studio .NET. http://aspnet.click-url.com/go/psa00100003ave/direct;at.aspnet_072303_01/01 _______________________________________________ Mspgcc-users mailing list Mspgcc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mspgcc-users
