好办法，短期和字节之间转换？ [英] Good way to convert between short and bytes?

问题描述

我需要对以字节为单位，输出短路，走在短裤和输出字节对。以下是我已经设计了这样一个目的的功能：

I need to take pairs of bytes in, and output shorts, and take shorts in and output pairs of bytes. Here are the functions i've devised for such a purpose:

static short ToShort(short byte1, short byte2)
{
    short number = (short)byte2;
    number <<= 4;
    number += (short)byte1;
    return number;
}
static void FromShort(short number, out byte byte1, out byte byte2)
{
    byte byte2 = (byte)(number >> 4);
    short tempByte = (short)byte2 << 4;
    byte byte1 = (byte)(number - tempByte);
}

我认为这是正确的，但我不知道。如果这不是正确的方式做到这一点，是什么？是有办法的框架已经做到这一点？

I think this is correct but i'm not sure. If this isn't the right way to do it, what is? is there a way to do this already in the framework?

推荐答案

更​​短的版本（也移位8位而不是4）：

Shorter version (also shifting 8 bits instead of 4):

static short ToShort(short byte1, short byte2)
{
    return (byte2 << 8) + byte1;
}

static void FromShort(short number, out byte byte1, out byte byte2)
{
    byte2 = (byte)(number >> 8);
    byte1 = (byte)(number & 255);
}

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