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authorRemko Tronçon <git@el-tramo.be>2010-02-11 12:14:00 (GMT)
committerRemko Tronçon <git@el-tramo.be>2010-02-11 12:14:00 (GMT)
commit0efa7c32aaf21a29b42b5926cc116007056843be (patch)
tree882f663a5dd0e65694bf6077b71086dd77fd7ff8 /3rdParty/Boost/boost/date_time/wrapping_int.hpp
parent1d20eabbc32274b491b4c2bedf73d19933d97bfd (diff)
downloadswift-contrib-0efa7c32aaf21a29b42b5926cc116007056843be.zip
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Moved some modules into separate git modules.
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diff --git a/3rdParty/Boost b/3rdParty/Boost
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+Subproject 3bbdbc8cf1996f23d9a366da8bac0f97be6ad79
diff --git a/3rdParty/Boost/boost/date_time/wrapping_int.hpp b/3rdParty/Boost/boost/date_time/wrapping_int.hpp
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--- a/3rdParty/Boost/boost/date_time/wrapping_int.hpp
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-#ifndef _DATE_TIME_WRAPPING_INT_HPP__
-#define _DATE_TIME_WRAPPING_INT_HPP__
-
-/* Copyright (c) 2002,2003,2005 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) $
- */
-
-
-namespace boost {
-namespace date_time {
-
-//! A wrapping integer used to support time durations (WARNING: only instantiate with a signed type)
-/*! In composite date and time types this type is used to
- * wrap at the day boundary.
- * Ex:
- * A wrapping_int<short, 10> will roll over after nine, and
- * roll under below zero. This gives a range of [0,9]
- *
- * NOTE: it is strongly recommended that wrapping_int2 be used
- * instead of wrapping_int as wrapping_int is to be depricated
- * at some point soon.
- *
- * Also Note that warnings will occur if instantiated with an
- * unsigned type. Only a signed type should be used!
- */
-template<typename int_type_, int_type_ wrap_val>
-class wrapping_int {
-public:
- typedef int_type_ int_type;
- //typedef overflow_type_ overflow_type;
- static int_type wrap_value() {return wrap_val;}
- //!Add, return true if wrapped
- wrapping_int(int_type v) : value_(v) {};
- //! Explicit converion method
- int_type as_int() const {return value_;}
- operator int_type() const {return value_;}
- //!Add, return number of wraps performed
- /*! The sign of the returned value will indicate which direction the
- * wraps went. Ex: add a negative number and wrapping under could occur,
- * this would be indicated by a negative return value. If wrapping over
- * took place, a positive value would be returned */
- template< typename IntT >
- IntT add(IntT v)
- {
- int_type remainder = static_cast<int_type>(v % (wrap_val));
- IntT overflow = static_cast<IntT>(v / (wrap_val));
- value_ = static_cast<int_type>(value_ + remainder);
- return calculate_wrap(overflow);
- }
- //! Subtract will return '+d' if wrapping under took place ('d' is the number of wraps)
- /*! The sign of the returned value will indicate which direction the
- * wraps went (positive indicates wrap under, negative indicates wrap over).
- * Ex: subtract a negative number and wrapping over could
- * occur, this would be indicated by a negative return value. If
- * wrapping under took place, a positive value would be returned. */
- template< typename IntT >
- IntT subtract(IntT v)
- {
- int_type remainder = static_cast<int_type>(v % (wrap_val));
- IntT underflow = static_cast<IntT>(-(v / (wrap_val)));
- value_ = static_cast<int_type>(value_ - remainder);
- return calculate_wrap(underflow) * -1;
- }
-private:
- int_type value_;
-
- template< typename IntT >
- IntT calculate_wrap(IntT wrap)
- {
- if ((value_) >= wrap_val)
- {
- ++wrap;
- value_ -= (wrap_val);
- }
- else if(value_ < 0)
- {
- --wrap;
- value_ += (wrap_val);
- }
- return wrap;
- }
-
-};
-
-
-//! A wrapping integer used to wrap around at the top (WARNING: only instantiate with a signed type)
-/*! Bad name, quick impl to fix a bug -- fix later!!
- * This allows the wrap to restart at a value other than 0.
- */
-template<typename int_type_, int_type_ wrap_min, int_type_ wrap_max>
-class wrapping_int2 {
-public:
- typedef int_type_ int_type;
- static int_type wrap_value() {return wrap_max;}
- static int_type min_value() {return wrap_min;}
- /*! If initializing value is out of range of [wrap_min, wrap_max],
- * value will be initialized to closest of min or max */
- wrapping_int2(int_type v) : value_(v) {
- if(value_ < wrap_min)
- {
- value_ = wrap_min;
- }
- if(value_ > wrap_max)
- {
- value_ = wrap_max;
- }
- }
- //! Explicit converion method
- int_type as_int() const {return value_;}
- operator int_type() const {return value_;}
- //!Add, return number of wraps performed
- /*! The sign of the returned value will indicate which direction the
- * wraps went. Ex: add a negative number and wrapping under could occur,
- * this would be indicated by a negative return value. If wrapping over
- * took place, a positive value would be returned */
- template< typename IntT >
- IntT add(IntT v)
- {
- int_type remainder = static_cast<int_type>(v % (wrap_max - wrap_min + 1));
- IntT overflow = static_cast<IntT>(v / (wrap_max - wrap_min + 1));
- value_ = static_cast<int_type>(value_ + remainder);
- return calculate_wrap(overflow);
- }
- //! Subtract will return '-d' if wrapping under took place ('d' is the number of wraps)
- /*! The sign of the returned value will indicate which direction the
- * wraps went. Ex: subtract a negative number and wrapping over could
- * occur, this would be indicated by a positive return value. If
- * wrapping under took place, a negative value would be returned */
- template< typename IntT >
- IntT subtract(IntT v)
- {
- int_type remainder = static_cast<int_type>(v % (wrap_max - wrap_min + 1));
- IntT underflow = static_cast<IntT>(-(v / (wrap_max - wrap_min + 1)));
- value_ = static_cast<int_type>(value_ - remainder);
- return calculate_wrap(underflow);
- }
-
-private:
- int_type value_;
-
- template< typename IntT >
- IntT calculate_wrap(IntT wrap)
- {
- if ((value_) > wrap_max)
- {
- ++wrap;
- value_ -= (wrap_max - wrap_min + 1);
- }
- else if((value_) < wrap_min)
- {
- --wrap;
- value_ += (wrap_max - wrap_min + 1);
- }
- return wrap;
- }
-};
-
-
-
-} } //namespace date_time
-
-
-
-#endif
-