18 lines
243 B
C
18 lines
243 B
C
#include <lib.h>
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/* ffs(3)
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*
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* Author: Terrence W. Holm Sep. 1988
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*/
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_PROTOTYPE( int ffs, (int word));
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int ffs(word)
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int word;
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{
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int i;
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if (word == 0) return(0);
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for (i = 1;; ++i, word >>= 1)
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if (word & 1) return(i);
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}
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