case_ascii.h

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#ifndef GUL14_CASE_ASCII_H_
#define GUL14_CASE_ASCII_H_
 
#include <string>
#include "gul14/internal.h"
#include "gul14/string_view.h"
 
namespace gul14 {
 
constexpr char lowercase_ascii(char c) noexcept
{
    if (c >= 'A' && c <= 'Z')
        c = static_cast<char>(c + ('a' - 'A'));
    return c;
}
 
GUL_EXPORT
std::string lowercase_ascii(gul14::string_view str);
 
GUL_EXPORT
std::string &lowercase_ascii_inplace(std::string &str) noexcept;
 
constexpr char uppercase_ascii(char c) noexcept
{
    if (c >= 'a' && c <= 'z')
        c = static_cast<char>(c - ('a' - 'A'));
    return c;
}
 
GUL_EXPORT
std::string uppercase_ascii(gul14::string_view str);
 
GUL_EXPORT
std::string &uppercase_ascii_inplace(std::string &str) noexcept;
 
} // namespace gul14
 
#endif
 
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