Android 浮点数Double与byte[]数组互转方法

最新推荐文章于 2024-08-18 02:55:15 发布

guanshangming

最新推荐文章于 2024-08-18 02:55:15 发布

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分类专栏： Android 文章标签： byte android float

本文链接：https://blog.youkuaiyun.com/guanshangming/article/details/7710566

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	static double ArryToDouble(byte[] Array,int Pos)   
	{ 
		long accum = 0; 
		accum = Array[Pos+0] & 0xFF;
		accum |= (long)(Array[Pos+1] & 0xFF)<<8;
		accum |= (long)(Array[Pos+2] & 0xFF)<<16;
		accum |= (long)(Array[Pos+3] & 0xFF)<<24;
		accum |= (long)(Array[Pos+4] & 0xFF)<<32;
		accum |= (long)(Array[Pos+5] & 0xFF)<<40;
		accum |= (long)(Array[Pos+6] & 0xFF)<<48;
		accum |= (long)(Array[Pos+7] & 0xFF)<<56;
		return Double.longBitsToDouble(accum); 
	}
	
	static byte[] DoubleToArray(double Value)
	{
		long accum = Double.doubleToRawLongBits(Value);
		byte[] byteRet = new byte[8];
		byteRet[0] = (byte)(accum & 0xFF);
		byteRet[1] = (byte)((accum>>8) & 0xFF);
		byteRet[2] = (byte)((accum>>16) & 0xFF);
		byteRet[3] = (byte)((accum>>24) & 0xFF);
		byteRet[4] = (byte)((accum>>32) & 0xFF);
		byteRet[5] = (byte)((accum>>40) & 0xFF);
		byteRet[6] = (byte)((accum>>48) & 0xFF);
		byteRet[7] = (byte)((accum>>56) & 0xFF);
		return byteRet;
	}

	static float ArryToFloat(byte[] Array,int Pos)   
	{ 
		int accum = 0; 
		accum = Array[Pos+0] & 0xFF;
		accum |= (long)(Array[Pos+1] & 0xFF)<<8;
		accum |= (long)(Array[Pos+2] & 0xFF)<<16;
		accum |= (long)(Array[Pos+3] & 0xFF)<<24;
		return Float.intBitsToFloat(accum); 
	}
	
	static byte[] FloatToArray(float Value)
	{
		int accum = Float.floatToRawIntBits(Value);
		byte[] byteRet = new byte[4];
		byteRet[0] = (byte)(accum & 0xFF);
		byteRet[1] = (byte)((accum>>8) & 0xFF);
		byteRet[2] = (byte)((accum>>16) & 0xFF);
		byteRet[3] = (byte)((accum>>24) & 0xFF);
		return byteRet;
	}