Hello,
I am currently using newlib 1.14 with gcc-3.4.6 on an m68k-elf target
with code compiled for mcpu32. I tried to integrate the ieeelib patches
from torbjorn which give me a speedup of about 25% in a simple test
using some multiply and divide operations.
The basic results look okay and the results from the floating point
executions are correct when using only operations like *,/,+,-,... If I
use the newlib functions from libm targeted for my cpu I get wrong
results. For example with pow, powf, ... If I switch back to the
floating point implementation fp-bit from gcc the functions work as
expected. Are there any more dependencies except beeing IEEE compliant?
The patch I used is based on the initial message from Torbjorn Granlund
(http://gcc.gnu.org/ml/gcc/1999-07n/msg00553.html) with two patches
applied from [1] and [2].
[1] fix float comparision problem:
http://gcc.gnu.org/ml/gcc/2003-06/msg02495.html
[2] updates for new gcc:
http://gcc.gnu.org/ml/gcc/2005-11/msg01373.html
I would really be grateful for any hints to point me into the right
direction. Or should I better redirect my question on the gcc list?
Regards,
Christian Walter
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