gcc/texinfo/libtxi/bzero.c

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1997-08-22 06:57:35 +08:00
/*
* Copyright (C) 1993 Free Software Foundation, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, you can either send email to this
* program's author (see below) or write to: The Free Software Foundation,
* Inc.; 59 Temple Place - Suite 330. Boston, MA 02111-1307, USA.
*/
#if !defined (HAVE_MEMSET) && !defined (HAVE_BZERO)
void
bzero (b, length)
register char *b;
register int length;
{
#ifdef VMS /* but this is definitely VMS-specific */
short zero = 0;
long max_str = 65535;
while (length > max_str)
{
(void) LIB$MOVC5 (&zero, &zero, &zero, &max_str, b);
length -= max_str;
b += max_str;
}
(void) LIB$MOVC5 (&zero, &zero, &zero, &length, b);
#else
while (length-- > 0)
*b++ = 0;
#endif /* not VMS */
}
#endif /* not HAVE_MEMSET && not HAVE_BZERO */