[英]c# how to store two 4 bit numbers into one byte
So I have two 4 bits
number (between 0 and 15):所以我有两个 4
bits
数字(在 0 和 15 之间):
int a = 1;
int b = 15;
And I want to store them into 1 byte
.我想将它们存储到 1
byte
。
This is what I have try:这是我尝试过的:
byte[] bytesA = BitConverter.GetBytes(a);
byte[] bytesB = BitConverter.GetBytes(b);
byte a = bytesA[0];
byte b = bytesB[1];
Sins a byte is 8 bits and you have 2 4 bit values, you will need to shift one of the values to occupy the high 4 bits of the resulting byte, like so:一个字节是 8 位,并且您有 2 个 4 位值,您需要移动其中一个值以占用结果字节的高 4 位,如下所示:
byte ab = (byte)((a << 4) | (b & 0xF));
To get a
out of ab
:为了得到
a
出ab
:
byte a = (byte)((ab >> 4) & 0xF);
To get b
out of ab
:为了获得
b
出ab
:
byte b = (byte)(ab & 0xF);
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