Literals Support :: Boost.Decimal

# Literals Support

The following literals are offered to construct each of the types:

    #include <boost/decimal/literals.hpp>

    namespace boost {
    namespace decimal {

    constexpr auto operator  "" _DF(const char* str) -> decimal32_t
    constexpr auto operator  "" _df(const char* str) -> decimal32_t

    constexpr auto operator  "" _DF(const char* str, std::size_t len) -> decimal32_t
    constexpr auto operator  "" _df(const char* str, std::size_t len) -> decimal32_t

    constexpr auto operator  "" _DD(const char* str) -> decimal64_t
    constexpr auto operator  "" _dd(const char* str) -> decimal64_t

    constexpr auto operator  "" _DD(const char* str, std::size_t len) -> decimal64_t
    constexpr auto operator  "" _dd(const char* str, std::size_t len) -> decimal64_t

    constexpr auto operator  "" _DL(const char* str) -> decimal128_t
    constexpr auto operator  "" _dl(const char* str) -> decimal128_t

    constexpr auto operator  "" _DL(const char* str, std::size_t len) -> decimal128_t
    constexpr auto operator  "" _dl(const char* str, std::size_t len) -> decimal128_t

    // ----- Fast Type Literals -----

    constexpr auto operator  "" _DFF(const char* str) -> decimal_fast32_t
    constexpr auto operator  "" _dff(const char* str) -> decimal_fast32_t

    constexpr auto operator  "" _DFF(const char* str, std::size_t len) -> decimal_fast32_t
    constexpr auto operator  "" _dff(const char* str, std::size_t len) -> decimal_fast32_t

    constexpr auto operator  "" _DDF(const char* str) -> decimal_fast64_t
    constexpr auto operator  "" _ddf(const char* str) -> decimal_fast64_t

    constexpr auto operator  "" _DDF(const char* str, std::size_t len) -> decimal_fast64_t
    constexpr auto operator  "" _ddf(const char* str, std::size_t len) -> decimal_fast64_t

    constexpr auto operator  "" _DLF(const char* str) -> decimal_fast128_t
    constexpr auto operator  "" _dlf(const char* str) -> decimal_fast128_t

    constexpr auto operator  "" _DLF(const char* str, std::size_t len) -> decimal_fast128_t
    constexpr auto operator  "" _dlf(const char* str, std::size_t len) -> decimal_fast128_t

    } //namespace decimal
    } //namespace boost

| `0.2_DF` is equivalent to calling `decimal32_t{2, -1}`. These are different from calling `decimal32_t{0.2}` which converts from a floating-point value which may or may not be exactly represented.