Hi,

I'm running my QNX system on arm cortex A8 with neon, and experiencing that the floating point operations using the math
 library are very slow. Standard double precision floating point operations are about 2,6 times slower than on my PC (I 
assume this is as expected), while the math operations are more than 300 times slower.

I'm compiling my program for ARM with the following options:
-O3 -mfpu=neon -ftree-vectorize -mfloat-abi=softfp -funsafe-math-optimizations  -ffast-math

I have tried to replace the libm.so.2 with the libm-vfp.so.2 as recommended in the QNX help system, but this made no 
difference to the execution time.

My test-program is attaced.

Any suggestions on how to improve the performance?

Thanks,
Torstein Berge