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Annotation of 3BSD/lib/libln/yyless.c, revision 1.1.1.1

1.1       root        1: yyless(x)
                      2: {
                      3: extern char yytext[];
                      4: register char *lastch, *ptr;
                      5: extern int yyleng;
                      6: extern int yyprevious;
                      7: lastch = yytext+yyleng;
                      8: if (x>=0 && x <= yyleng)
                      9:        ptr = x + yytext;
                     10: else
                     11:        ptr = x;
                     12: while (lastch > ptr)
                     13:        yyunput(*--lastch);
                     14: *lastch = 0;
                     15: if (ptr >yytext)
                     16:        yyprevious = *--lastch;
                     17: yyleng = ptr-yytext;
                     18: }

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