常用各种数据校验方法源代码.doc

常用各种数据校验方法源代码Borland C+ Builder5.0/-/定义数据类型缩写形式typedef unsigned char uchar; /无符号字符typedef unsigned short ushort; /无符号短整型typedef unsigned long ulong; /无符号长整型typedef unsigned int uint; /无符号整型typedef DynamicArray TByteDynArray; /动态定义字节数组/CRC8位校验uchar CRC8Valid(const uchar* puchData, int len) uchar crc8 = 0; while (len-) crc8 = crc8 (*puchData+); return crc8;/-/CRC8位校验uchar CRC8Valid(const TByteDynArray puchData, int len) uchar crc8 = 0; int index = 0; while (len-) crc8 = crc8 puchDataindex+; return crc8;/-/和校验uchar SumValid(const uchar* puchData, int len) uchar crc8 = 0; while (len-) crc8 = crc8 + (*puchData+); return crc8;/-/和校验uchar SumValid(const TByteDynArray puchData, int len) uchar crc8 = 0; int index = 0; while (len-) crc8 = crc8 + puchDataindex+; return crc8;/-/从第index位开始进行校验uchar SumValid(const uchar* puchData, int index,int len) uchar crc8 = 0; puchData+=index; while (len-) crc8 = crc8 + (*puchData+); return crc8;/-/从第index位开始进行校验uchar SumValid(const TByteDynArray puchData, int index,int len) uchar crc8 = 0; int indexs = 0; indexs+=index; while (len-) crc8 = crc8 + puchDataindexs+; return crc8;/-/CRC16校验ushort CRC16Valid(const TByteDynArray buffer, int len) ushort crc = 0, tmp; int index = 0; while(len-) tmp = bufferindex+; crc = crc (tmp 8); for (int i = 0; i 8; i+) if (crc & 0x8000) crc = (crc 1) 0x1021; else crc 8) | (crc 8); return(crc);/-/CRC16校验ushort CRC16Valid(const uchar* buffer, int len) ushort crc = 0, tmp; while(len-) tmp = *buffer+; crc = crc (tmp 8); for (int i = 0; i 8; i+) if (crc & 0x8000) crc = (crc 1) 0x1021; else crc 8) | (crc 8); return(crc);/-/异或校验void XORValid(const TByteDynArray buffer, int len) char checksum = 0, cr = 13, ln = 10; char ch1,c1; /校验位的高四位和第四位 for (int i = 0; i 4) & 0x0F; /取高位数； c1 = checksum & 0x0F; /取低位数； if (ch1 10) /低于10的数 ch1 = ch1 + 0; else ch1 = (ch1 - 10 ) + A; /不低于10的16进制数，如：A、B、C、D、E、F if (c1 10) c1 = c1 + 0; else c1 = (c1 - 10 )+ A; XOR_High=ch1; XOR_Low =c1;/-/异或校验void XORValid(const uchar* buffer, int len) char checksum = 0, cr = 13, ln = 10; char ch1,c1; /校验位的高四位和第四位 for (int i = 0; i 4) & 0x0F; /取高位数； c1 = checksum & 0x0F; /取低位数； if (ch1 10) /低于10的数 ch1 = ch1 + 0; else ch1 = (ch1