floating point in verilog question

[Altera_Forum]

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?   Thanks and have a good weekend. Sean

[Altera_Forum]

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

[Altera_Forum]

or you can try and convert it all to fixed point :)

[Altera_Forum]

Thanks pancake, 

 I already looked into megacore ip and I don't know where to start. Do you have any samples to let me fresh start.   In C code.   float scale_factor; scale_factor = 1 / (float) number_of_samples;   Is there module .v that I just plug the float value in/out?     Thanks, I will look over the weekend.   Sean