1。32位資料轉換為8位資料

UINT32 m_num32[512];//32裡面有引數

UINT8 m_num8[2048];

UINT8 m_temp;

memset(m_num8, 0, 2048);

for(int i = 0; i < 512; i++)

{

m_temp = m_num32[i] >> 24;

m_num8[i] = m_temp;

m_temp = m_num32[i] >> 16;

m_num8[i + 512] = m_temp;

m_temp = m_num32[i] >> 8;

m_num8[i + 1024] = m_temp;

m_temp = m_num32[i];

m_num8[i + 1536] = m_temp;

}
 

2.8位資料轉換位32位資料

UINT32 m_num32[512];

UINT8 m_num8[2048];//8裡面有資料

UINT8 m_temp;

memset(m_num32, 0, 512);

for(int i = 0; i < 512; i++)

{

m_temp = m_num8[i];

m_num32[i] |= m_temp << 24;

m_temp = m_num8[i + 512];

m_num32[i] |= m_temp << 16;

m_temp = m_num8[i + 1024];

m_num32[i] |= m_temp << 8;

m_temp = m_num8[i + 1536];

m_num32[i] |= m_temp;

}