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Altera_Forum
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10 years ago

Percentage calculation in VHDL

Hi All, I am using MAX10 FPGA and need to calculate percentage. My data is 12 bit long. So I take the data, divide it by 100 by using the LPM_DIVIDE IP. I take the Quotient and multiply it to t...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

ouh...

first you do multiplication and store intermediate result with more than required bits , then you do division. <- this works well.

i don't know the number range you deal with.

( but if it doesn't break your accuracy you can replace division by 100 = 2^2 * 25 with division by 96 = 2^5 * 3 it means that at least 5 bits of operand looses)