Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

floating point in verilog question

Hi there, I'm converting some code in DSP floating point to systemverilog. I always get value 0 instead of 0.00001 in TI DSP. Is there a library to support floating point in Quartus device? ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

you have a couple of options

Altera has some floating point megafunctions, i think Verilog is supported:

http://www.altera.com/literature/ug/ug_altfp_mfug.pdf

DSP Builder Advanced Blockset has some floating point blocks and full "math.h" support. it generates VHDL:

http://www.altera.com/literature/hb/dspb/hb_dspb_adv.pdf

you could also try the VHDL 2008 floating point package (there are some modified for VHDL-93 out there). this is not optimized for/by Altera, so i would expect the lowest fmax and highest resource usage out of the 3