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Altera_Forum
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10 years ago

Exponential function in vhdl

hiii I want to implement exp(x.^2) in VHDL for synthesis. Can any one suggest how to do it. Here x is in signed format and i want result in fixed point arithmatic i.e. without rondoff operation....
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

I highly suggest you learn about digital design. What you are going to create is a ROM - a read only memory. This can be done in VHDL using a constant which can be initialised from a function, a specified constant or a .mif file. you can have matlab generate the values to go into the constant.

There are plenty of examples out on the web.