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12 lines
310 B
C
12 lines
310 B
C
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#include <stdint.h>
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uint32_t hamming_weight(uint32_t value) {
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value = value - ((value >> 1) & 0x55555555);
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value = (value & 0x33333333) + ((value >> 2) & 0x33333333);
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value = (value + (value >> 4)) & 0x0F0F0F0F;
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value = value + (value >> 8);
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value = value + (value >> 16);
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return value & 0x3F;
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}
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