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Annotation of 42BSD/ingres/source/gutil/bitcnt.c, revision 1.1

1.1     ! root        1: # include      <sccs.h>
        !             2: 
        !             3: SCCSID(@(#)bitcnt.c    7.1     2/5/81)
        !             4: 
        !             5: 
        !             6: /*
        !             7: **     Count the number of 1's in the integer var. As long
        !             8: **     as left shift is zero fill this routine is machine
        !             9: **     independent.
        !            10: */
        !            11: 
        !            12: bitcnt(var)
        !            13: register int   var;
        !            14: {
        !            15:        register int    i, ret;
        !            16: 
        !            17:        for (ret = 0, i = 1; i; i <<= 1)
        !            18:                if (i & var)
        !            19:                        ret++;
        !            20: 
        !            21:        return (ret);
        !            22: }

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