#include "../h/rt.h"
/*
* lexcmp - lexically compare two strings.
*/
lexcmp(d1, d2)
struct descrip *d1, *d2;
{
register char *s1, *s2;
register int minlen;
int l1, l2;
/*
* Get length and starting address of both strings.
*/
l1 = STRLEN(*d1);
s1 = STRLOC(*d1);
l2 = STRLEN(*d2);
s2 = STRLOC(*d2);
/*
* Set minlen to length of the shorter string.
*/
minlen = (l1 <= l2) ? l1 : l2;
/*
* Compare as many bytes as are in the smaller string. If an
* inequality is found, return the difference of the differing
* bytes.
*/
while (minlen--)
if (*s1++ != *s2++)
return ((*--s1 & 0377) - (*--s2 & 0377));
/*
* The strings compared equal for the length of the shorter. Return
* the difference in their lengths. (Thus, the strings must be of
* the same length to be equal.)
*/
return (l1 - l2);
}