21 lines
285 B
C
21 lines
285 B
C
#include "util.h"
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unsigned int powof2(unsigned int num)
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{
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if (num != 0) {
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num--;
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num |= (num >> 1);
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num |= (num >> 2);
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num |= (num >> 4);
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num |= (num >> 8);
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num |= (num >> 16);
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num++;
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}
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return num;
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}
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int ispow2(int num)
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{
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return (num && !(num & (num - 1)));
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} |