diff options
| author | Paul Mackerras <paulus@samba.org> | 2006-02-10 16:51:29 +1100 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2006-02-10 16:51:29 +1100 |
| commit | d6d93856cb90eeb07062ad938bd26f554bf1b9b9 (patch) | |
| tree | eeec5011a42f38d3dfe7b61788b7ac1cc890edeb /arch/mips/math-emu/sp_simple.c | |
| parent | 8f75015f33c3005e0bbf83ffc0d5e0b4262cc03d (diff) | |
| parent | ad71f123a9e9b809f6c829db1222ce0423a1153c (diff) | |
Merge ../powerpc-merge
Diffstat (limited to 'arch/mips/math-emu/sp_simple.c')
| -rw-r--r-- | arch/mips/math-emu/sp_simple.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/arch/mips/math-emu/sp_simple.c b/arch/mips/math-emu/sp_simple.c index c809830dffb..770f0f4677c 100644 --- a/arch/mips/math-emu/sp_simple.c +++ b/arch/mips/math-emu/sp_simple.c @@ -48,16 +48,22 @@ ieee754sp ieee754sp_neg(ieee754sp x) CLEARCX; FLUSHXSP; + /* + * Invert the sign ALWAYS to prevent an endless recursion on + * pow() in libc. + */ + /* quick fix up */ + SPSIGN(x) ^= 1; + if (xc == IEEE754_CLASS_SNAN) { + ieee754sp y = ieee754sp_indef(); SETCX(IEEE754_INVALID_OPERATION); - return ieee754sp_nanxcpt(ieee754sp_indef(), "neg"); + SPSIGN(y) = SPSIGN(x); + return ieee754sp_nanxcpt(y, "neg"); } if (ieee754sp_isnan(x)) /* but not infinity */ return ieee754sp_nanxcpt(x, "neg", x); - - /* quick fix up */ - SPSIGN(x) ^= 1; return x; } |