base¶
name¶
base, base_upper - convert decimimal to base<n>
synopsis¶
#include<fast_io.h>
using namespace fast_io::mnp;
base<n>(ref);
base_upper<n>(ref);
// n is integer and 2 <= n <=36
// ref = integer || pointer_v || contiguous_iterator
description¶
Both base() and base_upper() work with print family
as parameter of print() and specify the non-type-parameter, which is integer
.
example¶
#include<fast_io.h>
#include<fast_io_device.h>
void f() {};
int main() {
using namespace fast_io::mnp;
constexpr int i{123157};
std::string str{concat(
"hex\tdec\toct\tbin\tbase<36>\n",
hex(i),"\t",dec(i),"\t",oct(i),"\t",bin(i),"\t",base<36>(i),"\n",
"hex_upper\tdec\toct\tbin\tbase_upper<36>\n",
hex_upper(i),"\t",dec(i),"\t",oct(i),"\t",bin(i),"\t",base_upper<36>(i),"\n")};
print(auto_indent(str));
print("\n\n");
// dec oct bin
// they hasn't suffix
// hex_upper hex dec oct bin
// the readability of them is poor,
// recommend to use base<2> base<8> base<16> base_upper<16>
println("ubase: ",ubase<36>(i));
println("ubase_upper: ",ubase_upper<36>(i));
print("\n\n");
std::vector vec{1,2,4,36,25};
auto vec_it = vec.begin();
std::array arr{1,2,4,36,25};
auto arr_it = arr.begin();
int const* p{&i};
str = fast_io::concat("for int poiter","\t",base<8>(p),"\n"
"for function poiter","\t",base<8>(f),"\n"
"for vector iterator","\t",base<8>(vec_it),"\n"
"for array iterator","\t",base<8>(arr_it),"\n");
println(auto_indent(str));
}