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Fish 'n' More 2
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bitops.c
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C/C++ Source or Header
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1991-02-01
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992b
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85 lines
/* Copyright (c) 1986, Greg McGary */
static char sccsid[] = "@(#)bitops.c 1.1 86/10/09";
#include "bitops.h"
char *bitsset();
char *bitsclr();
char *bitsand();
char *bitsxor();
int bitstst();
int bitsany();
char *
bitsset(s1, s2, n)
register char *s1;
register char *s2;
register int n;
{
while (n--)
*s1++ |= *s2++;
return s1;
}
char *
bitsclr(s1, s2, n)
register char *s1;
register char *s2;
register int n;
{
while (n--)
*s1++ &= ~*s2++;
return s1;
}
char *
bitsand(s1, s2, n)
register char *s1;
register char *s2;
register int n;
{
while (n--)
*s1++ &= *s2++;
return s1;
}
char *
bitsxor(s1, s2, n)
register char *s1;
register char *s2;
register int n;
{
while (n--)
*s1++ ^= *s2++;
return s1;
}
int
bitstst(s1, s2, n)
register char *s1;
register char *s2;
register int n;
{
while (n--)
if (*s1++ & *s2++)
return 1;
return 0;
}
int
bitsany(s, n)
register char *s;
register int n;
{
while (n--)
if (*s++)
return 1;
return 0;
}