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Diffstat (limited to '3rdParty/Boost/boost/date_time/int_adapter.hpp')
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-rw-r--r-- | 3rdParty/Boost/boost/date_time/int_adapter.hpp | 509 |
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diff --git a/3rdParty/Boost b/3rdParty/Boost new file mode 160000 +Subproject 3bbdbc8cf1996f23d9a366da8bac0f97be6ad79 diff --git a/3rdParty/Boost/boost/date_time/int_adapter.hpp b/3rdParty/Boost/boost/date_time/int_adapter.hpp deleted file mode 100644 index fc98fc1..0000000 --- a/3rdParty/Boost/boost/date_time/int_adapter.hpp +++ /dev/null @@ -1,509 +0,0 @@ -#ifndef _DATE_TIME_INT_ADAPTER_HPP__ -#define _DATE_TIME_INT_ADAPTER_HPP__ - -/* Copyright (c) 2002,2003 CrystalClear Software, Inc. - * Use, modification and distribution is subject to the - * Boost Software License, Version 1.0. (See accompanying - * file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt) - * Author: Jeff Garland, Bart Garst - * $Date: 2008-11-12 14:37:53 -0500 (Wed, 12 Nov 2008) $ - */ - - -#include "boost/config.hpp" -#include "boost/limits.hpp" //work around compilers without limits -#include "boost/date_time/special_defs.hpp" -#include "boost/date_time/locale_config.hpp" -#ifndef BOOST_DATE_TIME_NO_LOCALE -# include <ostream> -#endif - -namespace boost { -namespace date_time { - - -//! Adapter to create integer types with +-infinity, and not a value -/*! This class is used internally in counted date/time representations. - * It adds the floating point like features of infinities and - * not a number. It also provides mathmatical operations with - * consideration to special values following these rules: - *@code - * +infinity - infinity == Not A Number (NAN) - * infinity * non-zero == infinity - * infinity * zero == NAN - * +infinity * -integer == -infinity - * infinity / infinity == NAN - * infinity * infinity == infinity - *@endcode - */ -template<typename int_type_> -class int_adapter { -public: - typedef int_type_ int_type; - int_adapter(int_type v) : - value_(v) - {} - static bool has_infinity() - { - return true; - } - static const int_adapter pos_infinity() - { - return (::std::numeric_limits<int_type>::max)(); - } - static const int_adapter neg_infinity() - { - return (::std::numeric_limits<int_type>::min)(); - } - static const int_adapter not_a_number() - { - return (::std::numeric_limits<int_type>::max)()-1; - } - static int_adapter max BOOST_PREVENT_MACRO_SUBSTITUTION () - { - return (::std::numeric_limits<int_type>::max)()-2; - } - static int_adapter min BOOST_PREVENT_MACRO_SUBSTITUTION () - { - return (::std::numeric_limits<int_type>::min)()+1; - } - static int_adapter from_special(special_values sv) - { - switch (sv) { - case not_a_date_time: return not_a_number(); - case neg_infin: return neg_infinity(); - case pos_infin: return pos_infinity(); - case max_date_time: return (max)(); - case min_date_time: return (min)(); - default: return not_a_number(); - } - } - static bool is_inf(int_type v) - { - return (v == neg_infinity().as_number() || - v == pos_infinity().as_number()); - } - static bool is_neg_inf(int_type v) - { - return (v == neg_infinity().as_number()); - } - static bool is_pos_inf(int_type v) - { - return (v == pos_infinity().as_number()); - } - static bool is_not_a_number(int_type v) - { - return (v == not_a_number().as_number()); - } - //! Returns either special value type or is_not_special - static special_values to_special(int_type v) - { - if (is_not_a_number(v)) return not_a_date_time; - if (is_neg_inf(v)) return neg_infin; - if (is_pos_inf(v)) return pos_infin; - return not_special; - } - - //-3 leaves room for representations of infinity and not a date - static int_type maxcount() - { - return (::std::numeric_limits<int_type>::max)()-3; - } - bool is_infinity() const - { - return (value_ == neg_infinity().as_number() || - value_ == pos_infinity().as_number()); - } - bool is_pos_infinity()const - { - return(value_ == pos_infinity().as_number()); - } - bool is_neg_infinity()const - { - return(value_ == neg_infinity().as_number()); - } - bool is_nan() const - { - return (value_ == not_a_number().as_number()); - } - bool is_special() const - { - return(is_infinity() || is_nan()); - } - bool operator==(const int_adapter& rhs) const - { - return (compare(rhs) == 0); - } - bool operator==(const int& rhs) const - { - // quiets compiler warnings - bool is_signed = std::numeric_limits<int_type>::is_signed; - if(!is_signed) - { - if(is_neg_inf(value_) && rhs == 0) - { - return false; - } - } - return (compare(rhs) == 0); - } - bool operator!=(const int_adapter& rhs) const - { - return (compare(rhs) != 0); - } - bool operator!=(const int& rhs) const - { - // quiets compiler warnings - bool is_signed = std::numeric_limits<int_type>::is_signed; - if(!is_signed) - { - if(is_neg_inf(value_) && rhs == 0) - { - return true; - } - } - return (compare(rhs) != 0); - } - bool operator<(const int_adapter& rhs) const - { - return (compare(rhs) == -1); - } - bool operator<(const int& rhs) const - { - // quiets compiler warnings - bool is_signed = std::numeric_limits<int_type>::is_signed; - if(!is_signed) - { - if(is_neg_inf(value_) && rhs == 0) - { - return true; - } - } - return (compare(rhs) == -1); - } - bool operator>(const int_adapter& rhs) const - { - return (compare(rhs) == 1); - } - int_type as_number() const - { - return value_; - } - //! Returns either special value type or is_not_special - special_values as_special() const - { - return int_adapter::to_special(value_); - } - //creates nasty ambiguities -// operator int_type() const -// { -// return value_; -// } - - /*! Operator allows for adding dissimilar int_adapter types. - * The return type will match that of the the calling object's type */ - template<class rhs_type> - inline - int_adapter operator+(const int_adapter<rhs_type>& rhs) const - { - if(is_special() || rhs.is_special()) - { - if (is_nan() || rhs.is_nan()) - { - return int_adapter::not_a_number(); - } - if((is_pos_inf(value_) && rhs.is_neg_inf(rhs.as_number())) || - (is_neg_inf(value_) && rhs.is_pos_inf(rhs.as_number())) ) - { - return int_adapter::not_a_number(); - } - if (is_infinity()) - { - return *this; - } - if (rhs.is_pos_inf(rhs.as_number())) - { - return int_adapter::pos_infinity(); - } - if (rhs.is_neg_inf(rhs.as_number())) - { - return int_adapter::neg_infinity(); - } - } - return int_adapter<int_type>(value_ + rhs.as_number()); - } - - int_adapter operator+(const int_type rhs) const - { - if(is_special()) - { - if (is_nan()) - { - return int_adapter<int_type>(not_a_number()); - } - if (is_infinity()) - { - return *this; - } - } - return int_adapter<int_type>(value_ + rhs); - } - - /*! Operator allows for subtracting dissimilar int_adapter types. - * The return type will match that of the the calling object's type */ - template<class rhs_type> - inline - int_adapter operator-(const int_adapter<rhs_type>& rhs)const - { - if(is_special() || rhs.is_special()) - { - if (is_nan() || rhs.is_nan()) - { - return int_adapter::not_a_number(); - } - if((is_pos_inf(value_) && rhs.is_pos_inf(rhs.as_number())) || - (is_neg_inf(value_) && rhs.is_neg_inf(rhs.as_number())) ) - { - return int_adapter::not_a_number(); - } - if (is_infinity()) - { - return *this; - } - if (rhs.is_pos_inf(rhs.as_number())) - { - return int_adapter::neg_infinity(); - } - if (rhs.is_neg_inf(rhs.as_number())) - { - return int_adapter::pos_infinity(); - } - } - return int_adapter<int_type>(value_ - rhs.as_number()); - } - int_adapter operator-(const int_type rhs) const - { - if(is_special()) - { - if (is_nan()) - { - return int_adapter<int_type>(not_a_number()); - } - if (is_infinity()) - { - return *this; - } - } - return int_adapter<int_type>(value_ - rhs); - } - - // should templatize this to be consistant with op +- - int_adapter operator*(const int_adapter& rhs)const - { - if(this->is_special() || rhs.is_special()) - { - return mult_div_specials(rhs); - } - return int_adapter<int_type>(value_ * rhs.value_); - } - /*! Provided for cases when automatic conversion from - * 'int' to 'int_adapter' causes incorrect results. */ - int_adapter operator*(const int rhs) const - { - if(is_special()) - { - return mult_div_specials(rhs); - } - return int_adapter<int_type>(value_ * rhs); - } - - // should templatize this to be consistant with op +- - int_adapter operator/(const int_adapter& rhs)const - { - if(this->is_special() || rhs.is_special()) - { - if(is_infinity() && rhs.is_infinity()) - { - return int_adapter<int_type>(not_a_number()); - } - if(rhs != 0) - { - return mult_div_specials(rhs); - } - else { // let divide by zero blow itself up - return int_adapter<int_type>(value_ / rhs.value_); - } - } - return int_adapter<int_type>(value_ / rhs.value_); - } - /*! Provided for cases when automatic conversion from - * 'int' to 'int_adapter' causes incorrect results. */ - int_adapter operator/(const int rhs) const - { - if(is_special() && rhs != 0) - { - return mult_div_specials(rhs); - } - return int_adapter<int_type>(value_ / rhs); - } - - // should templatize this to be consistant with op +- - int_adapter operator%(const int_adapter& rhs)const - { - if(this->is_special() || rhs.is_special()) - { - if(is_infinity() && rhs.is_infinity()) - { - return int_adapter<int_type>(not_a_number()); - } - if(rhs != 0) - { - return mult_div_specials(rhs); - } - else { // let divide by zero blow itself up - return int_adapter<int_type>(value_ % rhs.value_); - } - } - return int_adapter<int_type>(value_ % rhs.value_); - } - /*! Provided for cases when automatic conversion from - * 'int' to 'int_adapter' causes incorrect results. */ - int_adapter operator%(const int rhs) const - { - if(is_special() && rhs != 0) - { - return mult_div_specials(rhs); - } - return int_adapter<int_type>(value_ % rhs); - } -private: - int_type value_; - - //! returns -1, 0, 1, or 2 if 'this' is <, ==, >, or 'nan comparison' rhs - int compare(const int_adapter& rhs)const - { - if(this->is_special() || rhs.is_special()) - { - if(this->is_nan() || rhs.is_nan()) { - if(this->is_nan() && rhs.is_nan()) { - return 0; // equal - } - else { - return 2; // nan - } - } - if((is_neg_inf(value_) && !is_neg_inf(rhs.value_)) || - (is_pos_inf(rhs.value_) && !is_pos_inf(value_)) ) - { - return -1; // less than - } - if((is_pos_inf(value_) && !is_pos_inf(rhs.value_)) || - (is_neg_inf(rhs.value_) && !is_neg_inf(value_)) ) { - return 1; // greater than - } - } - if(value_ < rhs.value_) return -1; - if(value_ > rhs.value_) return 1; - // implied-> if(value_ == rhs.value_) - return 0; - } - /* When multiplying and dividing with at least 1 special value - * very simmilar rules apply. In those cases where the rules - * are different, they are handled in the respective operator - * function. */ - //! Assumes at least 'this' or 'rhs' is a special value - int_adapter mult_div_specials(const int_adapter& rhs)const - { - int min_value; - // quiets compiler warnings - bool is_signed = std::numeric_limits<int_type>::is_signed; - if(is_signed) { - min_value = 0; - } - else { - min_value = 1;// there is no zero with unsigned - } - if(this->is_nan() || rhs.is_nan()) { - return int_adapter<int_type>(not_a_number()); - } - if((*this > 0 && rhs > 0) || (*this < min_value && rhs < min_value)) { - return int_adapter<int_type>(pos_infinity()); - } - if((*this > 0 && rhs < min_value) || (*this < min_value && rhs > 0)) { - return int_adapter<int_type>(neg_infinity()); - } - //implied -> if(this->value_ == 0 || rhs.value_ == 0) - return int_adapter<int_type>(not_a_number()); - } - /* Overloaded function necessary because of special - * situation where int_adapter is instantiated with - * 'unsigned' and func is called with negative int. - * It would produce incorrect results since 'unsigned' - * wraps around when initialized with a negative value */ - //! Assumes 'this' is a special value - int_adapter mult_div_specials(const int& rhs) const - { - int min_value; - // quiets compiler warnings - bool is_signed = std::numeric_limits<int_type>::is_signed; - if(is_signed) { - min_value = 0; - } - else { - min_value = 1;// there is no zero with unsigned - } - if(this->is_nan()) { - return int_adapter<int_type>(not_a_number()); - } - if((*this > 0 && rhs > 0) || (*this < min_value && rhs < 0)) { - return int_adapter<int_type>(pos_infinity()); - } - if((*this > 0 && rhs < 0) || (*this < min_value && rhs > 0)) { - return int_adapter<int_type>(neg_infinity()); - } - //implied -> if(this->value_ == 0 || rhs.value_ == 0) - return int_adapter<int_type>(not_a_number()); - } - -}; - -#ifndef BOOST_DATE_TIME_NO_LOCALE - /*! Expected output is either a numeric representation - * or a special values representation.<BR> - * Ex. "12", "+infinity", "not-a-number", etc. */ - //template<class charT = char, class traits = std::traits<charT>, typename int_type> - template<class charT, class traits, typename int_type> - inline - std::basic_ostream<charT, traits>& - operator<<(std::basic_ostream<charT, traits>& os, const int_adapter<int_type>& ia) - { - if(ia.is_special()) { - // switch copied from date_names_put.hpp - switch(ia.as_special()) - { - case not_a_date_time: - os << "not-a-number"; - break; - case pos_infin: - os << "+infinity"; - break; - case neg_infin: - os << "-infinity"; - break; - default: - os << ""; - } - } - else { - os << ia.as_number(); - } - return os; - } -#endif - - -} } //namespace date_time - - - -#endif |