[英]Boost::binary<>
Is there anything in boost libraries like binary? 像二进制这样的boost库中有什么东西吗? For example I would like to write:
例如,我想写:
binary<10101> a;
I'm ashamed to admit that I've tried to find it (Google, Boost) but no results. 我很惭愧地承认我已经试图找到它(Google,Boost),但没有结果。 They're mention something about binary_int<> but I couldn't find neither if it is available nor what header file shall I include;
他们提到了一些关于binary_int <>的内容,但我既不知道它是否可用,也不会找到我应该包含的头文件;
Thanks for help. 感谢帮助。
There is the BOOST_BINARY
macro. 有
BOOST_BINARY
宏。 used like this 像这样用过
int array[BOOST_BINARY(1010)];
// equivalent to int array[012]; (decimal 10)
To go with your example: 跟你的例子一起:
template<int N> struct binary { static int const value = N; };
binary<BOOST_BINARY(10101)> a;
Once some compiler supports C++0x's user defined literals, you could write 一旦某些编译器支持C ++ 0x的用户定义文字,您就可以编写
template<char... digits>
struct conv2bin;
template<char high, char... digits>
struct conv2bin<high, digits...> {
static_assert(high == '0' || high == '1', "no bin num!");
static int const value = (high - '0') * (1 << sizeof...(digits)) +
conv2bin<digits...>::value;
};
template<char high>
struct conv2bin<high> {
static_assert(high == '0' || high == '1', "no bin num!");
static int const value = (high - '0');
};
template<char... digits>
constexpr int operator "" _b() {
return conv2bin<digits...>::value;
}
int array[1010_b];
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