IEEE754 处理数据变换

public  class IEEE754 {

/// <summary>

/// 将二进制值转ASCII格式十六进制字符串

/// </summary>

/// <paramname="data">二进制值</param>

/// <paramname="length">定长度的二进制</param>

/// <returns>ASCII格式十六进制字符串</returns>

public static string toHexString(int data, int length)

{

string result = "";

if (data > 0)

result = Convert.ToString(data, 16).ToUpper();

if (result.Length < length)

{

// 位数不够补0

StringBuilder msg = new StringBuilder(0);

msg.Length = 0;

msg.Append(result);

for (; msg.Length < length; msg.Insert(0, "0")) ;

result = msg.ToString();

}

return result;

}

///<summary>

/// 将浮点数转ASCII格式十六进制字符串（符合IEEE-754标准（32））

/// </summary>

/// <paramname="data">浮点数值</param>

/// <returns>十六进制字符串</returns>

public static string FloatToIntString(float data)

{

byte[] intBuffer = BitConverter.GetBytes(data);

StringBuilder stringBuffer = new StringBuilder(0);

for (int i = 0; i < intBuffer.Length; i++)

{

stringBuffer.Insert(0, toHexString(intBuffer[i] & 0xff, 2));

}

return stringBuffer.ToString();

}

/// <summary>

/// 将ASCII格式十六进制字符串转浮点数（符合IEEE-754标准（32））

/// </summary>

/// <param name="data">16进制字符串</param>

/// <returns></returns>

public static float StringToFloat(String data)

{

if (data.Length < 8 || data.Length > 8)

{

//throw new NotEnoughDataInBufferException(data.length(), 8);

return 0;

}

else

{

byte[] intBuffer = new byte[4];

// 将16进制串按字节逆序化（一个字节2个ASCII码）

for (int i = 0; i < 4; i++)

{

intBuffer[i] = Convert.ToByte(data.Substring((3 - i) * 2, 2), 16);

}

return BitConverter.ToSingle(intBuffer, 0);

}

}

/// <summary>

/// 将byte数组转为浮点数

/// </summary>

/// <param name="bResponse">byte数组</param>

/// <returns></returns>

public static float ByteToFloat(byte[] bResponse)

{

if (bResponse.Length < 4 || bResponse.Length > 4)

{

//throw new NotEnoughDataInBufferException(data.length(), 8);

return 0;

}

else

{

byte[] intBuffer = new byte[4];

//将byte数组的前后两个字节的高低位换过来

intBuffer[0] = bResponse[1];

intBuffer[1] = bResponse[0];

intBuffer[2] = bResponse[3];

intBuffer[3] = bResponse[2];

return BitConverter.ToSingle(intBuffer, 0);

}

}

}