hi, Gcc (2.96 20000731,H.J.LU's rh port for mips) think 0x7fc00000 is QNaN and optimize 0.0/0.0 as 0x7fc00000 for single precision ops,while for my cpu (maybe most mips cpu) is a SNaN. R4k user's manual and "See Mips Run" both say so.And experiments confirm this. Should we correct it? > >Regards > Zhang Fuxin > fxzhang@ict.ac.cn Regards Zhang Fuxin fxzhang@ict.ac.cn