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Altera_Forum
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14 years ago

problem in cos funtion

sir/mam, i have used ieee math_real ,now k1 : bwlmulti port map (a1,f,q1); qout <= cos (q1); here shows an error that "cos can't have such operand in this context". plz help me out of pr...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

For a start, its best to use fixed point rather than floating point.

There are two main methods for cos function:

Use a lookup table.

Use the CORDIC algorithm. There are many implementations of this. Or have a look here:

http://en.wikipedia.org/wiki/cordic