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fmtversion.c

/***********************************************************************
*                                                                      *
*               This software is part of the ast package               *
*          Copyright (c) 1985-2009 AT&T Intellectual Property          *
*                      and is licensed under the                       *
*                  Common Public License, Version 1.0                  *
*                    by AT&T Intellectual Property                     *
*                                                                      *
*                A copy of the License is available at                 *
*            http://www.opensource.org/licenses/cpl1.0.txt             *
*         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
*                                                                      *
*              Information and Software Systems Research               *
*                            AT&T Research                             *
*                           Florham Park NJ                            *
*                                                                      *
*                 Glenn Fowler <gsf@research.att.com>                  *
*                  David Korn <dgk@research.att.com>                   *
*                   Phong Vo <kpv@research.att.com>                    *
*                                                                      *
***********************************************************************/
#pragma prototyped
/*
 * Glenn Fowler
 * AT&T Bell Laboratories
 *
 * return formatted <magicid.h> version string
 */

#include <ast.h>

char*
fmtversion(register unsigned long v)
{
      register char*    cur;
      register char*    end;
      char*       buf;
      int         n;

      buf = cur = fmtbuf(n = 18);
      end = cur + n;
      if (v >= 19700101L)
            sfsprintf(cur, end - cur, "%04lu-%02lu-%02lu", (v / 10000) % 10000, (v / 100) % 100, v % 100);
      else
      {
            if (n = (v >> 24) & 0xff)
                  cur += sfsprintf(cur, end - cur, "%d.", n);
            if (n = (v >> 16) & 0xff)
                  cur += sfsprintf(cur, end - cur, "%d.", n);
            sfsprintf(cur, end - cur, "%ld.%ld", (v >> 8) & 0xff, v & 0xff);
      }
      return buf;
}

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