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| author | Liu Yu <yu.liu@freescale.com> | 2008-10-28 06:50:18 +0300 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2008-12-03 17:19:12 +0300 |
| commit | cf03033658739accd24f18f864107151a2e9a796 (patch) | |
| tree | 03b7205dc07dfc875c045804eb7bf8eaf9c5d5e7 /arch/powerpc | |
| parent | 55b9121b4295a8260e52dd78327f1edd1e34feb2 (diff) | |
| download | linux-cf03033658739accd24f18f864107151a2e9a796.tar.xz | |
powerpc/math-emu: Fix single float point division bug
PowerPC float point division emulation is derived from gcc.
I reported this problem on gcc maillist and got this reply:
http://gcc.gnu.org/ml/gcc/2008-03/msg00543.html
Since UDIV_NEEDS_NORMALIZATION is not used by kernel, we should use
_FP_DIV_MEAT_1_udiv_norm to make sure the single float point
is normalized before udiv_qrnnd.
Signed-off-by: Liu Yu <yu.liu@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/include/asm/sfp-machine.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/sfp-machine.h b/arch/powerpc/include/asm/sfp-machine.h index ced34f1dc8f8..da12ea79cb99 100644 --- a/arch/powerpc/include/asm/sfp-machine.h +++ b/arch/powerpc/include/asm/sfp-machine.h @@ -82,7 +82,7 @@ #define _FP_MUL_MEAT_S(R,X,Y) _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_S,R,X,Y,umul_ppmm) #define _FP_MUL_MEAT_D(R,X,Y) _FP_MUL_MEAT_2_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm) -#define _FP_DIV_MEAT_S(R,X,Y) _FP_DIV_MEAT_1_udiv(S,R,X,Y) +#define _FP_DIV_MEAT_S(R,X,Y) _FP_DIV_MEAT_1_udiv_norm(S,R,X,Y) #define _FP_DIV_MEAT_D(R,X,Y) _FP_DIV_MEAT_2_udiv(D,R,X,Y) /* These macros define what NaN looks like. They're supposed to expand to |