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    /*-  | 
    
    
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     * Copyright (c) 2009 The NetBSD Foundation, Inc.  | 
    
    
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     * All rights reserved.  | 
    
    
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     *  | 
    
    
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     * This code is derived from software contributed to The NetBSD Foundation  | 
    
    
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     * by David A. Holland.  | 
    
    
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     *  | 
    
    
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     * Redistribution and use in source and binary forms, with or without  | 
    
    
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     * modification, are permitted provided that the following conditions  | 
    
    
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     * are met:  | 
    
    
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     * 1. Redistributions of source code must retain the above copyright  | 
    
    
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     *    notice, this list of conditions and the following disclaimer.  | 
    
    
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     * 2. Redistributions in binary form must reproduce the above copyright  | 
    
    
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     *    notice, this list of conditions and the following disclaimer in the  | 
    
    
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     *    documentation and/or other materials provided with the distribution.  | 
    
    
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     *  | 
    
    
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     * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS  | 
    
    
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     * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED  | 
    
    
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     * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR  | 
    
    
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     * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS  | 
    
    
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     * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR  | 
    
    
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     * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF  | 
    
    
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     * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS  | 
    
    
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     * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN  | 
    
    
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     * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)  | 
    
    
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     * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE  | 
    
    
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     * POSSIBILITY OF SUCH DAMAGE.  | 
    
    
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     */  | 
    
    
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    #include <stdlib.h>  | 
    
    
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    #include <string.h>  | 
    
    
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    #define ARRAYINLINE  | 
    
    
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    #include "array.h"  | 
    
    
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    struct array *  | 
    
    
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    array_create(void)  | 
    
    
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    { | 
    
    
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    	struct array *a;  | 
    
    
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    	a = domalloc(sizeof(*a));  | 
    
    
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    	array_init(a);  | 
    
    
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    	return a;  | 
    
    
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    }  | 
    
    
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    void  | 
    
    
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    array_destroy(struct array *a)  | 
    
    
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    { | 
    
    
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    	array_cleanup(a);  | 
    
    
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    	dofree(a, sizeof(*a));  | 
    
    
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    }  | 
    
    
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    void  | 
    
    
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    array_init(struct array *a)  | 
    
    
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    { | 
    
    
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    	a->num = a->max = 0;  | 
    
    
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    	a->v = NULL;  | 
    
    
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    }  | 
    
    
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    void  | 
    
    
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    array_cleanup(struct array *a)  | 
    
    
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    { | 
    
    
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    	arrayassert(a->num == 0);  | 
    
    
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    	dofree(a->v, a->max * sizeof(a->v[0]));  | 
    
    
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    #ifdef ARRAYS_CHECKED  | 
    
    
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    	a->v = NULL;  | 
    
    
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    #endif  | 
    
    
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    }  | 
    
    
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    void  | 
    
    
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    array_setsize(struct array *a, unsigned num)  | 
    
    
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    { | 
    
    
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    	unsigned newmax;  | 
    
    
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    	void **newptr;  | 
    
    
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    	if (num > a->max) { | 
    
    
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    		newmax = a->max;  | 
    
    
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    		while (num > newmax) { | 
    
    
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    			newmax = newmax ? newmax*2 : 4;  | 
    
    
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    		}  | 
    
    
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    		newptr = dorealloc(a->v, a->max * sizeof(a->v[0]),  | 
    
    
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    				   newmax * sizeof(a->v[0]));  | 
    
    
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    		a->v = newptr;  | 
    
    
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    		a->max = newmax;  | 
    
    
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    	}  | 
    
    
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    	a->num = num;  | 
    
    
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    }  | 
    
    
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    void  | 
    
    
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    array_insert(struct array *a, unsigned index_)  | 
    
    
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    { | 
    
    
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    	unsigned movers;  | 
    
    
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    	arrayassert(a->num <= a->max);  | 
    
    
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    	arrayassert(index_ < a->num);  | 
    
    
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    	movers = a->num - index_;  | 
    
    
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    	array_setsize(a, a->num + 1);  | 
    
    
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    	memmove(a->v + index_+1, a->v + index_, movers*sizeof(*a->v));  | 
    
    
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    }  | 
    
    
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    void  | 
    
    
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    array_remove(struct array *a, unsigned index_)  | 
    
    
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    { | 
    
    
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    	unsigned movers;  | 
    
    
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    	arrayassert(a->num <= a->max);  | 
    
    
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    	arrayassert(index_ < a->num);  | 
    
    
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    	movers = a->num - (index_ + 1);  | 
    
    
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    	memmove(a->v + index_, a->v + index_+1, movers*sizeof(*a->v));  | 
    
    
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    	a->num--;  | 
    
    
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    }  |