how to write the code of following for loop

here b and c represents real and imaginery coefficient of dtcwt

[Roger Stafford]

We need to see what you have tried to do yourself, so we can comment on it, rather than simply giving you an answer.

[thasneem]

this is what actually want to do.

[Stalin Samuel]

name of the algorithm?

[Jan]

@thasneem: I've added the "doit4me" tag, because I do not see any effort of yourself to solve your problem.