global.h

来自「基于DCT的小波变换EZW压缩算法以及毕业设计论文」· C头文件 代码 · 共 35 行

#ifndef _GLOBAL_
#define _GLOBAL_

#include <math.h>
#include "cdib.h"
#include <complex>

#include <stdio.h>
#include <stdlib.h>

/*---------------------------------------------------------------------------*/
// standard #defines
/*---------------------------------------------------------------------------*/
#define TRUE  1
#define FALSE 0

/*---------------------------------------------------------------------------*/
// useful constants
/*---------------------------------------------------------------------------*/

const double Pi = 3.14159265358979;
const double Sqrt2 = sqrt(2.0);
const double Log2 = log(2.0);
/*---------------------------------------------------------------------------*/
// helpful inline functions
/*---------------------------------------------------------------------------*/

inline int log2 (int x) 
{
   int count = 0;
   while (x >>= 1)  count++;
   return count;
}

#endif