#include <algorithm>
#include <compare>
#include <cstddef>
#include <istream>
#include <limits>
#include <ostream>
#include <sstream>
#include <string>
#include <string_view>
#include <utility>
#include <variant>
#include <vector>
#include "debug.h"
#include "enums.h"
#include "isotopologues.h"
#include "matpack_concepts.h"
#include "nonstd.h"
#include "rational.h"

Classes
struct	Quantum::Number::StringValue
	Holds string values but can only hold sizeof(Index) long values. More...

struct	Quantum::Number::IntegerValue
	Holds integer values. More...

struct	Quantum::Number::HalfIntegerValue
	Holds half integer values, but only its denominator. More...

union	Quantum::Number::ValueHolder
	A union of the three type of values we need to consider. More...

struct	Quantum::Number::ValueDescription
	A complete description of a value, its type and value. More...

struct	Quantum::Number::TwoLevelValueHolder
	The values of two levels. More...

struct	Quantum::Number::LevelMatch
	Struct that converts to bool automatically but allows checking both energy levels matching status. More...

struct	Quantum::Number::Value
	A complete quantum number value with type information. More...

struct	Quantum::Number::CheckMatch
	Status of comparing two lists that are supposedly of some type. More...

class	Quantum::Number::ValueList
	A list of many quantum numbers. Should always remain sorted. More...

struct	Quantum::Number::LocalState
	A logical struct for local quantum numbers. More...

struct	Quantum::Number::LevelTest

struct	Quantum::Number::GlobalState
	A logical struct for global quantum numbers with species identifiers. More...

struct	Quantum::Number::StateMatch
	StateMatchType operates so that a check less than a level should be 'better', bar None. More...

Namespaces
namespace	Quantum

namespace	Quantum::Number

Typedefs
using	QuantumNumberType = Quantum::Number::Type

using	QuantumNumberValue = Quantum::Number::Value

using	QuantumNumberValueList = Quantum::Number::ValueList

using	QuantumNumberLocalState = Quantum::Number::LocalState

using	QuantumIdentifier = Quantum::Number::GlobalState

using	ArrayOfQuantumIdentifier = Array< QuantumIdentifier >

Functions
	Quantum::Number::ENUMCLASS (Type, char, alpha, config, ElecStateLabel, F, F1, F10, F11, F12, F2, F3, F4, F5, F6, F7, F8, F9, I, J, K, Ka, Kc, L, Lambda, N, Omega, S, Sigma, SpinComponentLabel, asSym, elecInv, elecRefl, elecSym, kronigParity, l, l1, l10, l11, l12, l2, l3, l4, l5, l6, l7, l8, l9, n, parity, r, rotSym, rovibSym, sym, tau, term, v, v1, v10, v11, v12, v2, v3, v4, v5, v6, v7, v8, v9, vibInv, vibRefl, vibSym) const expr ValueType common_value_type(Type type) noexcept
	Three tags, S: str, I: index, H: half-index.

constexpr ValueType	Quantum::Number::common_value_type (ValueType a, ValueType b) noexcept
	Return a common type between a and b.

constexpr std::strong_ordering	Quantum::Number::cmp (std::strong_ordering &&a, std::strong_ordering &&b)

constexpr ValueDescription	Quantum::Number::value_holder (Rational r_)
	Takes a rational and determine which type of quantum number it is, returning this information or throwing a runtime error if there's an error.

constexpr Rational	Quantum::Number::cast_qnrat (std::string_view s) noexcept
	Returns a rational if possible or RATIONAL_UNDEFINED otherwise.

constexpr ValueDescription	Quantum::Number::value_holder (std::string_view s, Type t)
	Returns a value description for the quantum number.

constexpr Index	Quantum::Number::count_items (std::string_view s) noexcept
	Count all space-separated items in s.

constexpr std::string_view	Quantum::Number::rstrip (std::string_view x)
	Strips spaces at the end of x before returning it.

constexpr std::string_view	Quantum::Number::lstrip (std::string_view x)
	Strips spaces at the beginning x before returning it.

constexpr std::string_view	Quantum::Number::strip (std::string_view x)
	Strips spaces at the beginning and end of x before returning it.

template<std::size_t n = 1>
constexpr std::string_view	Quantum::Number::items (std::string_view s, std::size_t i) noexcept
	Get a view of a number of space-separated items from the list.

constexpr CheckValue	Quantum::Number::update (CheckValue val, CheckValue res) noexcept
	Updates old by what a new check says it should be.

constexpr CheckMatch	Quantum::Number::update (CheckMatch val, CheckValue res) noexcept
	Updates old by what a new check says it should be.

constexpr CheckMatch	Quantum::Number::update (CheckMatch val, CheckMatch res) noexcept
	Updates old by what a new check says it should be.

template<size_t N>
constexpr bool	Quantum::Number::is_sorted (const std::array< Type, N > &types) noexcept
	Checks if an array of types is sorted.

ValueList	Quantum::Number::from_hitran (std::string_view upp, std::string_view low)

	Quantum::Number::ENUMCLASS (VAMDC, char, asymcs, asymos, dcs, hunda, hundb, lpcs, lpos, ltcs, ltos, nltcs, nltos, sphcs, sphos, stcs) bool vamdcCheck(const ValueList &l
	VAMDC classes of quantum number cases.

Variables
constexpr Index	quantum_number_error_value = -999'999'999

VAMDC type	Quantum::Number::ARTS_NOEXCEPT

constexpr std::array	Quantum::Number::global_types
	A default state of global quantum numbers.

constexpr std::array	Quantum::Number::local_types
	A default state of local quantum numbers.