?? get_6bit.c
字號(hào):
/**********************************
***取得導(dǎo)航電文中25-30bit的校驗(yàn)位
***************************************/
#include"hanming.h"
int * Get_6bit ( int * forhan ,int * phanming )
{
/*int sum[6];
//int * phanming = sum[0] ;*/
int i, j;
int han_H[6][24] = {
{1,1,1,0,1,1,0,0,0,1,1,1,1,1,0,0,1,1,0,1,0,0,1,0},
{0,1,1,1,0,1,1,0,0,0,1,1,1,1,1,0,0,1,1,0,1,0,0,1},
{1,0,1,1,1,0,1,1,0,0,0,1,1,1,1,1,0,0,1,1,0,1,0,0},
{0,1,0,1,1,1,0,1,1,0,0,0,1,1,1,1,1,0,0,1,1,0,1,0},
{1,0,1,0,1,1,1,0,1,1,0,0,0,1,1,1,1,1,0,0,1,1,0,1},
{0,0,1,0,1,1,0,1,1,1,1,0,1,0,1,0,0,0,1,0,0,1,1,1}
};
for ( i=0; i<6; i++ )
{
* ( phanming + i ) = ( * ( * ( han_H + i ) ) ) ^ ( * forhan );
/* printf("%4d",sum[i]);*/
}
for ( i=0; i<6; i++ )
{
for( j=1; j<24; j++ )
{
* ( phanming + i ) ^= ( * ( * ( han_H + i ) + j ) ) ^ ( * ( forhan +j ) );
}
}
return phanming;
}
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