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- /*
- HEADER: CUG nnn.nn;
- TITLE: YACC - Yet Another Compilier-Compilier
- VERSION: 1.0 for IBM-PC
- DATE: JAN 28, 1985
- DESCRIPTION: LALR(1) Parser Generator. From UNIX
- KEYWORDS: Parser Generator Compilier-Compilier YACC
- SYSTEM: IBM-PC and Compatiables
- FILENAME: YSTUNI.1C
- WARNINGS: This program is not for the casual user. It will
- be useful primarily to expert developers.
- CRC: N/A
- SEE-ALSO: LEX and PREP
- AUTHORS: Scott Guthery 11100 leafwood lane Austin, TX 78750
- COMPILERS: DESMET-C
- REFERENCES: UNIX Systems Manuals
- */
-
- #include "y1.h"
-
- int setunion( register int *a, register int *b )
- {
- /* set a to the union of a and b */
- /* return 1 if b is not a subset of a, 0 otherwise */
- register int i, x, sub;
-
- sub = 0;
- SETLOOP(i)
- {
- *a = (x = *a)|*b++;
- if( *a++ != x ) sub = 1;
- }
- return( sub );
- }
-