I just want to make sure that I understand correctly the behavior of
floating-points on systems without
FPU. There is 2 way for doing floating-point operations:
The first is to let the CPU generate exceptions on a FP operation call ,
which are handl e by the kernel that do the job in software,
using integers only.
The second is to build your app using the -msoft-float compilation flag,
making GCC to convert itself the FP operations
to integer operations, using its own libraries.
Also, I've test the both methods with simple float operations, and I
figured suprisingly that the first method is a bit
faster (I though the overhead would have been larger than the second one).
Do I miss something? Is there anything I can do to optimize
significantly float operations?
Thanks a lot,