charimpl

Compile-time header-only char implementation checking for C++03/11/14/17/20

Example

#include <iostream>
#include <charimpl/charimpl.hpp>

int main()
{
    std::cout << std::boolalpha
        << charimpl::is_ascii() << std::endl
        << charimpl::is_ebcdic() << std::endl
        << charimpl::is_ebcdic037() << std::endl
        << charimpl::is_ebcdic1047() << std::endl;
}

All functions are marked as consteval/constexpr and noexcept if allowed by the compiler.

bool charimpl::is_ascii(); // Returns true if ASCII encoding is currently in use, false otherwise
bool charimpl::is_ebcdic(); // Returns true if any form of EBCDIC encoding is currently in use, false otherwise
bool charimpl::is_ebcdic037(); // Returns true if EBCDIC037/IBM037 encoding is currently in use, false otherwise
bool charimpl::is_ebcdic273(); // Returns true if EBCDIC273/IBM037 encoding is currently in use, false otherwise
bool charimpl::is_ebcdic1047(); // Returns true if EBCDIC1047/IBM1047 encoding is currently in use, false otherwise

CHARIMPL_ASCII_EXPR // Macro which expands to an expression equal to the result of charimpl::is_ascii()
CHARIMPL_EBCDIC_EXPR // Macro which expands to an expression equal to the result of charimpl::is_ebcdic()
CHARIMPL_EBCDIC037_EXPR // Macro which expands to an expression equal to the result of charimpl::is_ebcdic037()
CHARIMPL_EBCDIC273_EXPR // Macro which expands to an expression equal to the result of charimpl::is_ebcdic273()
CHARIMPL_EBCDIC1047_EXPR // Macro which expands to an expression equal to the result of charimpl::is_ebcdic1047()

Note: Macros should be surrounded with parentheses when used in larger statements in order to avoid potential issues with operator precedence