varcreate.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Copyright (c) 1986 AT&T
* All Rights Reserved
*/
#ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.2 */
#include <stdio.h>
#include "wish.h"
#include "var_arrays.h"
/*
* create a new v_array with space in it for "num" elements of size "size"
* (but the array is empty - must use array_grow or array append to fill it)
*/
struct v_array *
array_create(size, num)
unsigned size;
unsigned num;
{
register unsigned realsize;
register unsigned initstep;
register struct v_array *ptr;
realsize = size * num + sizeof(struct v_array);
initstep = num / 10;
if (initstep < 2)
initstep = 2;
if ((ptr = (struct v_array *)malloc(realsize)) == NULL)
return NULL;
ptr->tot_used = 0;
ptr->tot_left = num;
ptr->ele_size = size;
ptr->step_size = initstep;
return v_body(ptr);
}