cunsigned long int pow1unsigned char a1unsigned char a2 unsigned char i; unsigned long int value=1; fori=0;ia2;i++ value=a1; return value;函数名称： UR_3hex2float功能描述： 三字节浮点数转化输入参数： low-

function pow1(a1, a2)
    local value = 1
    for i = 1, a2 do
        value = value * a1
    end
    return value
end

function UR_3hex2float(low, middle, high)
    local SignB = 0
    local CmplSignB = 0
    local temp
    local mantissa
    local val

    mantissa = middle * 256 + low
    if high >= 128 then
        SignB = 1
        high = high - 128
    end
    if high >= 64 then
        high = 128 - high
        CmplSignB = 1
    end
    if high > 16 and CmplSignB == 0 then
        temp = 2 ^ (high - 16)
        val = mantissa * temp
    else
        if CmplSignB == 1 then
            temp = 16 + high
            if temp >= 32 then
                temp = 31
            end
        else
            temp = 16 - high
        end
        val = mantissa / (pow1(2, temp))
    end

    if SignB == 1 then
        val = -val
    end

    return val
end
``