十进制转二进制 C语言
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/* 十进制数据转化成二进制数据，可选择使用补码或源码*/ /* d_to_b.h */
#define data_length 79177
#define data_bit 16 //转化成二进制后的数据位宽
#define shift_length 3 //移位位宽
#define com_code 0 //取1则负数转化为补码
#define code ~com_code
double data_in_i[data_length]; // I路输入的十进制数据寄存器double data_in_q[data_length]; // Q路输入的十进制数据寄存器
int data_reg_i[data_length];
int data_reg_q[data_length];
int binary_i[data_bit]; //存放二进制数据的寄存器
int binary_q[data_bit]; //存放二进制数据的寄存器
int binary_i_com[data_bit]; //存放二进制补码数据的寄存器
int binary_q_com[data_bit]; //存放二进制补码数据的寄存器
/* d_to_b.c */
#include
#include
#include "d_to_b.h"
/****************************************************************** 十进制转化成二进制，且负数可选择用补码还是源码表示~~~~
******************************************************************/
int main()
{
int i;
int j, k;
/* ----------------------读入数据--------------------- */
FILE *fp_in_i, *fp_in_q;
fp_in_i = fopen("tx_interp_out_i.txt", "r");
fp_in_q = fopen("tx_interp_out_q.txt", "r");
for(i = 0; i < data_length; i++)
{
fscanf(fp_in_i, "%lf", &data_in_i[i]);
fscanf(fp_in_q, "%lf", &data_in_q[i]);
}
fclose (fp_in_i);
fclose (fp_in_q);
/* -------------------------------------------------- */
FILE *fp_shift_i, *fp_shift_q;
fp_shift_i = fopen("tx_shift_out_i.txt", "w+");
fp_shift_q = fopen("tx_shift_out_q.txt", "w+");
FILE *fp_out_i, *fp_out_q;
fp_out_i = fopen("change_out_i.txt", "w+");
fp_out_q = fopen("change_out_q.txt", "w+");
/* -------------需要移位的数据先进行移位，即转化成整数，不需要转的，则设置shift_length=0------------ */
for(i = 0; i < data_length; i++)
{
data_reg_i[i] = data_in_i[i] * pow(2, shift_length);
data_reg_q[i] = data_in_q[i] * pow(2, shift_length);
fprintf(fp_shift_i, "%d\n", data_reg_i[i]);
fprintf(fp_shift_q, "%d\n", data_reg_q[i]);
}
/* ----------------------------------------------- */
/* ---------------------------十进制化为二进制，负数用补码-------------------------------- */
#if com_code
for(i = 0; i < data_length; i++)
{
/* --------------I路正数转化------------- */
if(data_reg_i[i] >= 0)
{
binary_i[data_bit - 1] = 0; //符号位为0
fprintf(fp_out_i, "%d", binary_i[data_bit - 1]);
for(j = 0, k = fabs(data_reg_i[i]); j < data_bit - 1; j++, k = k/2)
{
if(k % 2 == 0)
binary_i[j] = 0;
else
binary_i[j] = 1;
}
for(j = data_bit - 2; j >= 0; j--)
{
fprintf(fp_out_i, "%d", binary_i[j]);
}
fprintf(fp_out_i, "\n");
}
/* --------------I路负数转化------------- */
else
{
binary_i[data_bit - 1] = 1; //符号位为1
fprintf(fp_out_i, "%d", binary_i[data_bit - 1]);
/* ---------------------------以下要按位取反---------------------------- */
if( -1 * data_reg_i[i] % 2 == 0 )
{
binary_i[0] = 0;
binary_i_com[0] = 0;
}
else
{
binary_i[0] = 1;
binary_i_com[0] = 1;
}
for(j = 1, k = fabs(data_reg_i[i]) / 2; j < data_bit - 1; j++, k = k/2)
{
if(k % 2 == 0 && binary_i[j - 1] == 0 && binary_i_com[j - 1] == 0)
{
binary_i[j] = 0;
binary_i_com[j] = 0;
}
else if(k % 2 == 0 && binary_i[j - 1] == 0 && binary_i_com[j - 1] == 1)
{
binary_i[j] = 0;
binary_i_com[j] = 1;
}
else if(k % 2 == 0 && binary_i[j - 1] == 1 && binary_i_com[j - 1] == 0)
{
binary_i[j] = 1;
binary_i_com[j] = 1;
}
else if(k % 2 == 0 && binary_i[j - 1] == 1 && binary_i_com[j - 1] == 1)