how to convert c function to verilog module?

Question

below is the code in C that is used to fuzzify an input. I have been trying to convert it to verilog syntax but i am having a lot of problem regarding the data types and such. The errors keep on piling.

float fuzzify_MF(float x,a,b,c,d) //x=crisp input 
{ 
float dom; 
if ( x >a && x <b) 
{ dom=(x-a)/(b – a); } 
else if (x>c && x<d) 
{ dom=(d-x)/(d-c); } 
else if (x>=b && x<=c) 
{dom=1.0; } 
else 
{ dom=0; } 
return dom; 
}

VHDL http://stackoverflow.com/questions/8988629/can-you-program-fpgas-in-c-like-languages | http://electronics.stackexchange.com/questions/156041/convert-c-to-fpga — Ciro Santilli OurBigBook.com, Jun 21 '16 at 09:19

score 1 · Answer 1 · answered May 28 '12 at 11:56

1

why dont you try using PLI. Try this link : PLI tutorial

answered May 28 '12 at 11:56

nav_jan

2,473
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score 0 · Answer 2 · answered May 28 '12 at 20:06

0

You can use PLI to solve this, but if you want to look cool and still solve it, use DPI of SystemVerilog.

http://www.project-veripage.com/dpi_tutorial_1.php

answered May 28 '12 at 20:06

sm535

587
7
20

score 0 · Answer 3 · answered Feb 14 '16 at 17:08

You can import a "C" function in the Verilog, by using PLIs.

Include following header file with the C function:

#include <svdip.h>

Now in the Verilog module:

module top;
  import "DPI-C" context function shortreal fuzzify_MF(shortreal x, shortreal a, shortreal b, shortreal c, shortreal d);
  shortreal t;

  initial
  begin
    t = fuzzify_MF(<Arguments>);
  end    
endmodule

You can read more on this topic in the link : DPI Tutorial

how to convert c function to verilog module?

3 Answers3