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/* ======================================================================
* utils.hh
*
* This file is part of MeshIO, the general and extensible 3D mesh I/O
* library.
* Copyright (c) 1999 Niklas Elmqvist. All rights reserved.
*
* File created 1999-06-02 by Niklas Elmqvist <d97elm@dtek.chalmers.se>.
*
* Chalmers Medialab
* <http://www.medialab.chalmers.se>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* ======================================================================
*/
#ifndef _UTILS_HH_
#define _UTILS_HH_
// -- System Includes
//#include <stdlib.h>
//#include <stdio.h>
// -- Defines and Macros
#define MAX(x, y) ((x) < (y) ? (y) : (x))
#define MIN(x, y) ((x) < (y) ? (x) : (y))
#ifndef PI
#define PI 3.141592687 // The Magic Number
#endif
#define TRUE 1 // Duh
#define FALSE 0 // Duh, part II
#define MAX_STRING_LENGTH 1024 // String length maximum
// Byte swapping macros (only applicable on big-endian machines)
#ifdef BIGENDIAN
#define SWAP32(x) ( (((x) & 0xff000000) >> 24) + (((x) & 0x00ff0000) >> 8) + (((x) & 0x0000ff00) << 8) + (((x) & 0x000000ff) << 24) )
#define SWAP16(x) ( (((x) & 0xff00) >> 8) + (((x) & 0x00ff) << 8) )
#else
#define SWAP32(x) (x)
#define SWAP16(x) (x)
#endif
// -- Struct Definitions
typedef struct _ListNode {
void *data;
struct _ListNode *next;
} ListNode;
// -- Function prototypes
// Read a zero-terminated string from a file
void StringReader(FILE *f, char *buf, int len = MAX_STRING_LENGTH);
// Write a zero-terminated string to a file
void StringWriter(FILE *f, char *buf);
// Read data and swap them for little-endian/big-endian compatibility
bool ReadData(FILE *f, void *val, int nsize, int nelem = 1, bool swap = true);
// Write data and swap them for little-endian/big-endian compatibility
bool WriteData(FILE *f, void *val, int nsize, int nelem = 1, bool swap = true);
// Add a node to a linked list
ListNode *AddNode(ListNode *list, void *data);
// Delete a node from a linked list (if found)
ListNode *DelNode(ListNode *list, void *data);
// Reverse a linked list
ListNode *ReverseList(ListNode *list);
// Clear a linked list
void ClearList(ListNode *list);
#endif /* utils.hh */
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