On Jan 8, 2008, at 9:05 PM, Liu Yu wrote:
take a look at how include/math-emu/op-4.h implements
__FP_FRAC_ADD_4 __FP_FRAC_SUB_4. Will that fix the bug, if
so we should make the code match how its done there.
- k
The macro define __FP_FRAC_ADD_4 is below. It can fix the carry bug.
On Jan 6, 2008, at 8:26 AM, Liu Yu wrote:
This bug exists in math emulation for powerpc.
The macro define are mainly used by multiplication.
When adding two unsigned operands ( r = x + y ),
the carry bit can be counted by whether r is less than x.
However, when adding three unsigned
This bug exists in math emulation for powerpc.
The macro define are mainly used by multiplication.
When adding two unsigned operands ( r = x + y ),
the carry bit can be counted by whether r is less than x.
However, when adding three unsigned operands, this method does not work.
The original code
