exzero.c

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/*************************************************************************
 * Copyright (c) 2011 AT&T Intellectual Property 
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors: Details at https://graphviz.org
 *************************************************************************/
 
/*
 * Glenn Fowler
 * AT&T Research
 *
 * expression library support
 */
 
#include "config.h"
 
#include <expr/exlib.h>
 
/*
 * return 0 value for type
 */
 
Extype_t exzero(long int type) {
        Extype_t        v = {0};
 
        switch (type)
        {
        case FLOATING:
                v.floating = 0.0;
                break;
        case INTEGER:
        case UNSIGNED:
                v.integer = 0;
                break;
        case STRING:
                v.string = expr.nullstring;
                break;
        }
        return v;
}