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Annotation of 42BSD/usr.lib/libF77/rindex_.c, revision 1.1

1.1     ! root        1: /*
        !             2: char id_rindex[] = "@(#)rindex_.c      1.2";
        !             3:  *
        !             4:  * find last occurrence of substring in string
        !             5:  *
        !             6:  * calling sequence:
        !             7:  *     character*(*) substr, string
        !             8:  *     indx = rindex (string, substr)
        !             9:  * where:
        !            10:  *     indx will be the index of the first character of the last occurence
        !            11:  *     of substr in string, or zero if not found.
        !            12:  */
        !            13: 
        !            14: long rindex_(str, substr, slen, sublen)
        !            15: char *str, *substr; long slen, sublen;
        !            16: {
        !            17:        register char *p = str + (slen - sublen);
        !            18: 
        !            19:        while (p >= str)
        !            20:                if (s_cmp(substr, p, sublen, slen) == 0)
        !            21:                        return((long)(++p - str));
        !            22:                else
        !            23:                        p--;
        !            24:        return(0L);
        !            25: }

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