Half precision float

I will answer myself (hope next step is not arguing with myself :) ).

I put this:
www.cellperformance.com/.../branchfree_implementation_of_h_1.html

in one uV project and get following performance:

float -> half conversion takes 919 cycles
half -> float conversion takes 1070 cycles.

Hope this helps somebody else.

Reason to use 16 bit float is to reduce data transfer rate.

I will answer myself (hope next step is not arguing with myself :) ).

I put this:
www.cellperformance.com/.../branchfree_implementation_of_h_1.html

in one uV project and get following performance:

float -> half conversion takes 919 cycles
half -> float conversion takes 1070 cycles.

Hope this helps somebody else.

Reason to use 16 bit float is to reduce data transfer rate.

With compiler options

-g -O3 -Otime

the performance is much better:
loat -> half conversion takes 85 cycles
half -> float conversion takes 90 cycles.

:)