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

how to code tan, arctan, log functions in verilog?

I need to use tan and arctan functions in verilog and generate a plot, one like in matlab.

Also , the code should be synthesizable.

Can any one suggest how can I code such trigonometric functions in verilog?

Awaiting help.

Thanks,

Susmitha

3 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    9 years ago

    You should use the Cordic IP core in order to generate complex mathematical functions.

    Try to instantiate and simulate the cordic core and configure it such a way that your math functions are generated.
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    9 years ago

    Or just precompute the values you need to some resolution, and store them in a ROM lookup table using block RAM.

    It all depends on what data format and resolution of computation you need (ie, 16b integer vs 32b floating point require dramatically different logic).