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#define CONST_BITS 8
#define DCTSIZE 8
#define DCTSIZE_BLOCK (DCTSIZE * DCTSIZE)
#define RIGHT_SHIFT(x,shft) ((x) >> (shft))
#define DESCALE(x,n) RIGHT_SHIFT((x) + (1 << ((n)-1)), n)
#define MULTIPLY(var,constant) (DESCALE((var) * (constant), CONST_BITS))
void fdct(int *data);
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