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/*

* ezThreeFourths - multiplies by 3/4 rounding toward 0,

* Should exactly duplicate effect of C expression (x*3/4),

* including overflow behavior.

* Examples: ezThreeFourths(11) = 8

* ezThreeFourths(-9) = -6

* ezThreeFourths(1073741824) = -268435456 (overflow)

* Legal ops: ! ~ & ^ | + << >>

* Max ops: 12

* Rating: 3

*/

int ezThreeFourths(int x) {

int mask;

int whatSign;

int bias;

int divByFour;

x = ((x << 1) +x); //multiply by 3 and then use pwrof2

mask = (1 << 2) + ~0;

whatSign = x >> 31;

bias = mask&whatSign;

divByFour = ((x + bias) >> 2);

return divByFour;

}