[Function] setBits(unsigned x, int p, int p, unsigned y): returs x with the n bits that begin at position p set to the rightmost n bits of y, leaving the other bits unchanged.

/* returs x with the n bits that begin at position p set to the rightmost n bits of y, leaving the other bits unchanged. */ unsigned setbits(unsigned x, int p, int n, unsigned y) { return ((x & ~(~((~0) << n) << (p + 1 - n))) | ((y & ~((~0) << n)) << (p + 1 - n))); }