把+刪除之後按 enter 妳會看到神奇的東西
Bit Twiddling Hacks - Computer Graphics at Stanford University1.複製底下這些字@+[226042057463141:0]2.貼在此回復3.把+刪除之後按 enter 妳會看到神奇的東西 Compute the sign of an integer int v; // we want to find the sign of v int sign; // the result goes here // CHAR_BIT is the number of bits per byte (normally 8). sign = -(v < 0); // if v < 0 then -1, else 0. // or, to avoid branching on CPUs with flag reg...
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