/src/quantlib/ql/time/period.cpp

Source (jump to first uncovered line)
/* -*- mode: c++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/*
 Copyright (C) 2004, 2005, 2006, 2007, 2008, 2014 Ferdinando Ametrano
 Copyright (C) 2006 Katiuscia Manzoni
 Copyright (C) 2000, 2001, 2002, 2003 RiskMap srl
 Copyright (C) 2003, 2004, 2005, 2006, 2008 StatPro Italia srl
 Copyright (C) 2014 Paolo Mazzocchi

 This file is part of QuantLib, a free-software/open-source library
 for financial quantitative analysts and developers - http://quantlib.org/

 QuantLib is free software: you can redistribute it and/or modify it
 under the terms of the QuantLib license.  You should have received a
 copy of the license along with this program; if not, please email
 <quantlib-dev@lists.sf.net>. The license is also available online at
 <https://www.quantlib.org/license.shtml>.

 This program is distributed in the hope that it will be useful, but WITHOUT
 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 FOR A PARTICULAR PURPOSE.  See the license for more details.
*/

#include <ql/time/period.hpp>
#include <ql/errors.hpp>

namespace QuantLib {

    Period::Period(Frequency f) {
        switch (f) {
          case NoFrequency:
            // same as Period()
            units_ = Days;
            length_ = 0;
            break;
          case Once:
            units_ = Years;
            length_ = 0;
            break;
          case Annual:
            units_ = Years;
            length_ = 1;
            break;
          case Semiannual:
          case EveryFourthMonth:
          case Quarterly:
          case Bimonthly:
          case Monthly:
            units_ = Months;
            length_ = 12/f;
            break;
          case EveryFourthWeek:
          case Biweekly:
          case Weekly:
            units_ = Weeks;
            length_ = 52/f;
            break;
          case Daily:
            units_ = Days;
            length_ = 1;
            break;
          case OtherFrequency:
            QL_FAIL("unknown frequency");  // no point in showing 999...
          default:
            QL_FAIL("unknown frequency (" << Integer(f) << ")");
        }
    }

    Frequency Period::frequency() const {
        // unsigned version
        Size length = std::abs(length_);

        if (length==0) {
            if (units_==Years) return Once;
            return NoFrequency;
        }

        switch (units_) {
          case Years:
            if (length == 1)
                return Annual;
            else
                return OtherFrequency;
          case Months:
            if (12%length == 0 && length <= 12)
                return Frequency(12/length);
            else
                return OtherFrequency;
          case Weeks:
            if (length==1)
                return Weekly;
            else if (length==2)
                return Biweekly;
            else if (length==4)
                return EveryFourthWeek;
            else
                return OtherFrequency;
          case Days:
            if (length==1)
                return Daily;
            else
                return OtherFrequency;
          default:
            QL_FAIL("unknown time unit (" << Integer(units_) << ")");
        }
    }

    void Period::normalize() {
        if (length_ == 0) {
            units_ = Days;
        } else {
            switch (units_) {
              case Months:
                if ((length_ % 12) == 0) {
                    length_ /= 12;
                    units_ = Years;
                }
                break;
              case Days:
                if ((length_ % 7) == 0) {
                    length_ /= 7;
                    units_ = Weeks;
                }
                break;
              case Weeks:
              case Years:
                break;
              default:
                QL_FAIL("unknown time unit (" << Integer(units_) << ")");
            }
        }
    }

    Period& Period::operator+=(const Period& p) {

        if (length_==0) {
            length_ = p.length();
            units_ = p.units();
        } else if (units_==p.units()) {
            // no conversion needed
            length_ += p.length();
        } else {
            switch (units_) {

              case Years:
                switch (p.units()) {
                  case Months:
                    units_ = Months;
                    length_ = length_*12 + p.length();
                    break;
                  case Weeks:
                  case Days:
                    QL_REQUIRE(p.length()==0,
                               "impossible addition between " << *this <<
                               " and " << p);
                    break;
                  default:
                    QL_FAIL("unknown time unit (" << Integer(p.units()) << ")");
                }
                break;

              case Months:
                switch (p.units()) {
                  case Years:
                    length_ += p.length()*12;
                    break;
                  case Weeks:
                  case Days:
                    QL_REQUIRE(p.length()==0,
                               "impossible addition between " << *this <<
                               " and " << p);
                    break;
                  default:
                    QL_FAIL("unknown time unit (" << Integer(p.units()) << ")");
                }
                break;

              case Weeks:
                switch (p.units()) {
                  case Days:
                    units_ = Days;
                    length_ = length_*7 + p.length();
                    break;
                  case Years:
                  case Months:
                    QL_REQUIRE(p.length()==0,
                               "impossible addition between " << *this <<
                               " and " << p);
                    break;
                  default:
                    QL_FAIL("unknown time unit (" << Integer(p.units()) << ")");
                }
                break;

              case Days:
                switch (p.units()) {
                  case Weeks:
                    length_ += p.length()*7;
                    break;
                  case Years:
                  case Months:
                    QL_REQUIRE(p.length()==0,
                               "impossible addition between " << *this <<
                               " and " << p);
                    break;
                  default:
                    QL_FAIL("unknown time unit (" << Integer(p.units()) << ")");
                }
                break;

              default:
                QL_FAIL("unknown time unit (" << Integer(units_) << ")");
            }
        }

        return *this;
    }

    Period& Period::operator-=(const Period& p) {
        return operator+=(-p);
    }

    Period& Period::operator*=(Integer n) {
        length_ *= n;
        return *this;
    }

    Period& Period::operator/=(Integer n) {
        QL_REQUIRE(n != 0, "cannot be divided by zero");
        if (length_ % n == 0) {
            // keep the original units. If the user created a
            // 24-months period, he'll probably want a 12-months one
            // when he halves it.
            length_ /= n;
        } else {
            // try
            TimeUnit units = units_;
            Integer length = length_;
            switch (units) {
              case Years:
                length *= 12;
                units = Months;
                break;
              case Weeks:
                length *= 7;
                units = Days;
                break;
              default:
                ;
            }
            QL_REQUIRE(length % n == 0,
                       *this << " cannot be divided by " << n);
            length_ = length/n;
            units_ = units;
        }
        return *this;
    }


    namespace {

        std::pair<Integer,Integer> daysMinMax(const Period& p) {
            switch (p.units()) {
              case Days:
                return std::make_pair(p.length(), p.length());
              case Weeks:
                return std::make_pair(7*p.length(), 7*p.length());
              case Months:
                return std::make_pair(28*p.length(), 31*p.length());
              case Years:
                return std::make_pair(365*p.length(), 366*p.length());
              default:
                QL_FAIL("unknown time unit (" << Integer(p.units()) << ")");
            }
        }

    }

    Real years(const Period& p) {
        if (p.length()==0) return 0.0;

        switch (p.units()) {
          case Days:
            QL_FAIL("cannot convert Days into Years");
          case Weeks:
            QL_FAIL("cannot convert Weeks into Years");
          case Months:
              return p.length()/12.0;
          case Years:
              return p.length();
          default:
            QL_FAIL("unknown time unit (" << Integer(p.units()) << ")");
        }
    }

    Real months(const Period& p) {
        if (p.length()==0) return 0.0;

        switch (p.units()) {
          case Days:
            QL_FAIL("cannot convert Days into Months");
          case Weeks:
            QL_FAIL("cannot convert Weeks into Months");
          case Months:
              return p.length();
          case Years:
              return p.length()*12.0;
          default:
            QL_FAIL("unknown time unit (" << Integer(p.units()) << ")");
        }
    }

    Real weeks(const Period& p) {
        if (p.length()==0) return 0.0;

        switch (p.units()) {
          case Days:
              return p.length()/7.0;
          case Weeks:
              return p.length();
          case Months:
            QL_FAIL("cannot convert Months into Weeks");
          case Years:
            QL_FAIL("cannot convert Years into Weeks");
          default:
            QL_FAIL("unknown time unit (" << Integer(p.units()) << ")");
        }
    }

    Real days(const Period& p) {
        if (p.length()==0) return 0.0;

        switch (p.units()) {
          case Days:
              return p.length();
          case Weeks:
              return p.length()*7.0;
          case Months:
            QL_FAIL("cannot convert Months into Days");
          case Years:
            QL_FAIL("cannot convert Years into Days");
          default:
            QL_FAIL("unknown time unit (" << Integer(p.units()) << ")");
        }
    }

    bool operator<(const Period& p1, const Period& p2) {

        // special cases
        if (p1.length() == 0)
            return p2.length() > 0;
        if (p2.length() == 0)
            return p1.length() < 0;

        // exact comparisons
        if (p1.units() == p2.units())
            return p1.length() < p2.length();
        if (p1.units() == Months && p2.units() == Years)
            return p1.length() < 12*p2.length();
        if (p1.units() == Years && p2.units() == Months)
            return 12*p1.length() < p2.length();
        if (p1.units() == Days && p2.units() == Weeks)
            return p1.length() < 7*p2.length();
        if (p1.units() == Weeks && p2.units() == Days)
            return 7*p1.length() < p2.length();

        // inexact comparisons (handled by converting to days and using limits)
        std::pair<Integer, Integer> p1lim = daysMinMax(p1);
        std::pair<Integer, Integer> p2lim = daysMinMax(p2);

        if (p1lim.second < p2lim.first)
            return true;
        else if (p1lim.first > p2lim.second)
            return false;
        else
            QL_FAIL("undecidable comparison between " << p1 << " and " << p2);
    }


    Period operator+(const Period& p1, const Period& p2) {
        Period result = p1;
        result += p2;
        return result;
    }

    Period operator-(const Period& p1, const Period& p2) {
        return p1+(-p2);
    }

    Period operator/(const Period& p, Integer n) {
        Period result = p;
        result /= n;
        return result;
    }

    // period formatting

    std::ostream& operator<<(std::ostream& out, const Period& p) {
        return out << io::short_period(p);
    }

    namespace detail {

        std::ostream& operator<<(std::ostream& out,
                                 const long_period_holder& holder) {
            Integer n = holder.p.length();
            switch (holder.p.units()) {
              case Days:
                return out << n << (n == 1 ? " day" : " days");
              case Weeks:
                return out << n << (n == 1 ? " week" : " weeks");
              case Months:
                return out << n << (n == 1 ? " month" : " months");
              case Years:
                return out << n << (n == 1 ? " year" : " years");
              default:
                QL_FAIL("unknown time unit (" << Integer(holder.p.units()) << ")");
            }
        }

        std::ostream& operator<<(std::ostream& out,
                                 const short_period_holder& holder) {
            Integer n = holder.p.length();
            switch (holder.p.units()) {
              case Days:
                return out << n << "D";
              case Weeks:
                return out << n << "W";
              case Months:
                return out << n << "M";
              case Years:
                return out << n << "Y";
              default:
                QL_FAIL("unknown time unit (" << Integer(holder.p.units()) << ")");
            }
        }

    }

    namespace io {

        detail::long_period_holder long_period(const Period& p) {
            return detail::long_period_holder(p);
        }

        detail::short_period_holder short_period(const Period& p) {
            return detail::short_period_holder(p);
        }

    }

}

Coverage Report

Created: 2025-09-04 07:11

Line	Count	Source (jump to first uncovered line)
1		/* -- mode: c++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -- */
2
3		/*
4		Copyright (C) 2004, 2005, 2006, 2007, 2008, 2014 Ferdinando Ametrano
5		Copyright (C) 2006 Katiuscia Manzoni
6		Copyright (C) 2000, 2001, 2002, 2003 RiskMap srl
7		Copyright (C) 2003, 2004, 2005, 2006, 2008 StatPro Italia srl
8		Copyright (C) 2014 Paolo Mazzocchi
9
10		This file is part of QuantLib, a free-software/open-source library
11		for financial quantitative analysts and developers - http://quantlib.org/
12
13		QuantLib is free software: you can redistribute it and/or modify it
14		under the terms of the QuantLib license. You should have received a
15		copy of the license along with this program; if not, please email
16		<quantlib-dev@lists.sf.net>. The license is also available online at
17		<https://www.quantlib.org/license.shtml>.
18
19		This program is distributed in the hope that it will be useful, but WITHOUT
20		ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
21		FOR A PARTICULAR PURPOSE. See the license for more details.
22		*/
23
24		#include <ql/time/period.hpp>
25		#include <ql/errors.hpp>
26
27		namespace QuantLib {
28
29	170k	Period::Period(Frequency f) {
30	170k	switch (f) {
31	0	case NoFrequency:
32		// same as Period()
33	0	units_ = Days;
34	0	length_ = 0;
35	0	break;
36	0	case Once:
37	0	units_ = Years;
38	0	length_ = 0;
39	0	break;
40	0	case Annual:
41	0	units_ = Years;
42	0	length_ = 1;
43	0	break;
44	0	case Semiannual:
45	0	case EveryFourthMonth:
46	0	case Quarterly:
47	0	case Bimonthly:
48	170k	case Monthly:
49	170k	units_ = Months;
50	170k	length_ = 12/f;
51	170k	break;
52	0	case EveryFourthWeek:
53	0	case Biweekly:
54	0	case Weekly:
55	0	units_ = Weeks;
56	0	length_ = 52/f;
57	0	break;
58	0	case Daily:
59	0	units_ = Days;
60	0	length_ = 1;
61	0	break;
62	0	case OtherFrequency:
63	0	QL_FAIL("unknown frequency"); // no point in showing 999...
64	0	default:
65	0	QL_FAIL("unknown frequency (" << Integer(f) << ")");
66	170k	}
67	170k	}
68
69	85.0k	Frequency Period::frequency() const {
70		// unsigned version
71	85.0k	Size length = std::abs(length_);
72
73	85.0k	if (length==0) {
74	0	if (units_==Years) return Once;
75	0	return NoFrequency;
76	0	}
77
78	85.0k	switch (units_) {
79	0	case Years:
80	0	if (length == 1)
81	0	return Annual;
82	0	else
83	0	return OtherFrequency;
84	85.0k	case Months:
85	85.0k	if (12%length == 0 && length <= 12)
86	85.0k	return Frequency(12/length);
87	0	else
88	0	return OtherFrequency;
89	0	case Weeks:
90	0	if (length==1)
91	0	return Weekly;
92	0	else if (length==2)
93	0	return Biweekly;
94	0	else if (length==4)
95	0	return EveryFourthWeek;
96	0	else
97	0	return OtherFrequency;
98	0	case Days:
99	0	if (length==1)
100	0	return Daily;
101	0	else
102	0	return OtherFrequency;
103	0	default:
104	0	QL_FAIL("unknown time unit (" << Integer(units_) << ")");
105	85.0k	}
106	85.0k	}
107
108	0	void Period::normalize() {
109	0	if (length_ == 0) {
110	0	units_ = Days;
111	0	} else {
112	0	switch (units_) {
113	0	case Months:
114	0	if ((length_ % 12) == 0) {
115	0	length_ /= 12;
116	0	units_ = Years;
117	0	}
118	0	break;
119	0	case Days:
120	0	if ((length_ % 7) == 0) {
121	0	length_ /= 7;
122	0	units_ = Weeks;
123	0	}
124	0	break;
125	0	case Weeks:
126	0	case Years:
127	0	break;
128	0	default:
129	0	QL_FAIL("unknown time unit (" << Integer(units_) << ")");
130	0	}
131	0	}
132	0	}
133
134	0	Period& Period::operator+=(const Period& p) {
135
136	0	if (length_==0) {
137	0	length_ = p.length();
138	0	units_ = p.units();
139	0	} else if (units_==p.units()) {
140		// no conversion needed
141	0	length_ += p.length();
142	0	} else {
143	0	switch (units_) {
144
145	0	case Years:
146	0	switch (p.units()) {
147	0	case Months:
148	0	units_ = Months;
149	0	length_ = length_*12 + p.length();
150	0	break;
151	0	case Weeks:
152	0	case Days:
153	0	QL_REQUIRE(p.length()==0,
154	0	"impossible addition between " << *this <<
155	0	" and " << p);
156	0	break;
157	0	default:
158	0	QL_FAIL("unknown time unit (" << Integer(p.units()) << ")");
159	0	}
160	0	break;
161
162	0	case Months:
163	0	switch (p.units()) {
164	0	case Years:
165	0	length_ += p.length()*12;
166	0	break;
167	0	case Weeks:
168	0	case Days:
169	0	QL_REQUIRE(p.length()==0,
170	0	"impossible addition between " << *this <<
171	0	" and " << p);
172	0	break;
173	0	default:
174	0	QL_FAIL("unknown time unit (" << Integer(p.units()) << ")");
175	0	}
176	0	break;
177
178	0	case Weeks:
179	0	switch (p.units()) {
180	0	case Days:
181	0	units_ = Days;
182	0	length_ = length_*7 + p.length();
183	0	break;
184	0	case Years:
185	0	case Months:
186	0	QL_REQUIRE(p.length()==0,
187	0	"impossible addition between " << *this <<
188	0	" and " << p);
189	0	break;
190	0	default:
191	0	QL_FAIL("unknown time unit (" << Integer(p.units()) << ")");
192	0	}
193	0	break;
194
195	0	case Days:
196	0	switch (p.units()) {
197	0	case Weeks:
198	0	length_ += p.length()*7;
199	0	break;
200	0	case Years:
201	0	case Months:
202	0	QL_REQUIRE(p.length()==0,
203	0	"impossible addition between " << *this <<
204	0	" and " << p);
205	0	break;
206	0	default:
207	0	QL_FAIL("unknown time unit (" << Integer(p.units()) << ")");
208	0	}
209	0	break;
210
211	0	default:
212	0	QL_FAIL("unknown time unit (" << Integer(units_) << ")");
213	0	}
214	0	}
215
216	0	return *this;
217	0	}
218
219	0	Period& Period::operator-=(const Period& p) {
220	0	return operator+=(-p);
221	0	}
222
223	0	Period& Period::operator*=(Integer n) {
224	0	length_ *= n;
225	0	return *this;
226	0	}
227
228	0	Period& Period::operator/=(Integer n) {
229	0	QL_REQUIRE(n != 0, "cannot be divided by zero");
230	0	if (length_ % n == 0) {
231		// keep the original units. If the user created a
232		// 24-months period, he'll probably want a 12-months one
233		// when he halves it.
234	0	length_ /= n;
235	0	} else {
236		// try
237	0	TimeUnit units = units_;
238	0	Integer length = length_;
239	0	switch (units) {
240	0	case Years:
241	0	length *= 12;
242	0	units = Months;
243	0	break;
244	0	case Weeks:
245	0	length *= 7;
246	0	units = Days;
247	0	break;
248	0	default:
249	0	;
250	0	}
251	0	QL_REQUIRE(length % n == 0,
252	0	*this << " cannot be divided by " << n);
253	0	length_ = length/n;
254	0	units_ = units;
255	0	}
256	0	return *this;
257	0	}
258
259
260		namespace {
261
262	0	std::pair<Integer,Integer> daysMinMax(const Period& p) {
263	0	switch (p.units()) {
264	0	case Days:
265	0	return std::make_pair(p.length(), p.length());
266	0	case Weeks:
267	0	return std::make_pair(7p.length(), 7p.length());
268	0	case Months:
269	0	return std::make_pair(28p.length(), 31p.length());
270	0	case Years:
271	0	return std::make_pair(365p.length(), 366p.length());
272	0	default:
273	0	QL_FAIL("unknown time unit (" << Integer(p.units()) << ")");
274	0	}
275	0	}
276
277		}
278
279	0	Real years(const Period& p) {
280	0	if (p.length()==0) return 0.0;
281
282	0	switch (p.units()) {
283	0	case Days:
284	0	QL_FAIL("cannot convert Days into Years");
285	0	case Weeks:
286	0	QL_FAIL("cannot convert Weeks into Years");
287	0	case Months:
288	0	return p.length()/12.0;
289	0	case Years:
290	0	return p.length();
291	0	default:
292	0	QL_FAIL("unknown time unit (" << Integer(p.units()) << ")");
293	0	}
294	0	}
295
296	0	Real months(const Period& p) {
297	0	if (p.length()==0) return 0.0;
298
299	0	switch (p.units()) {
300	0	case Days:
301	0	QL_FAIL("cannot convert Days into Months");
302	0	case Weeks:
303	0	QL_FAIL("cannot convert Weeks into Months");
304	0	case Months:
305	0	return p.length();
306	0	case Years:
307	0	return p.length()*12.0;
308	0	default:
309	0	QL_FAIL("unknown time unit (" << Integer(p.units()) << ")");
310	0	}
311	0	}
312
313	0	Real weeks(const Period& p) {
314	0	if (p.length()==0) return 0.0;
315
316	0	switch (p.units()) {
317	0	case Days:
318	0	return p.length()/7.0;
319	0	case Weeks:
320	0	return p.length();
321	0	case Months:
322	0	QL_FAIL("cannot convert Months into Weeks");
323	0	case Years:
324	0	QL_FAIL("cannot convert Years into Weeks");
325	0	default:
326	0	QL_FAIL("unknown time unit (" << Integer(p.units()) << ")");
327	0	}
328	0	}
329
330	0	Real days(const Period& p) {
331	0	if (p.length()==0) return 0.0;
332
333	0	switch (p.units()) {
334	0	case Days:
335	0	return p.length();
336	0	case Weeks:
337	0	return p.length()*7.0;
338	0	case Months:
339	0	QL_FAIL("cannot convert Months into Days");
340	0	case Years:
341	0	QL_FAIL("cannot convert Years into Days");
342	0	default:
343	0	QL_FAIL("unknown time unit (" << Integer(p.units()) << ")");
344	0	}
345	0	}
346
347	62.1M	bool operator<(const Period& p1, const Period& p2) {
348
349		// special cases
350	62.1M	if (p1.length() == 0)
351	61.2M	return p2.length() > 0;
352	850k	if (p2.length() == 0)
353	0	return p1.length() < 0;
354
355		// exact comparisons
356	850k	if (p1.units() == p2.units())
357	85.0k	return p1.length() < p2.length();
358	765k	if (p1.units() == Months && p2.units() == Years)
359	680k	return p1.length() < 12*p2.length();
360	85.0k	if (p1.units() == Years && p2.units() == Months)
361	85.0k	return 12*p1.length() < p2.length();
362	0	if (p1.units() == Days && p2.units() == Weeks)
363	0	return p1.length() < 7*p2.length();
364	0	if (p1.units() == Weeks && p2.units() == Days)
365	0	return 7*p1.length() < p2.length();
366
367		// inexact comparisons (handled by converting to days and using limits)
368	0	std::pair<Integer, Integer> p1lim = daysMinMax(p1);
369	0	std::pair<Integer, Integer> p2lim = daysMinMax(p2);
370
371	0	if (p1lim.second < p2lim.first)
372	0	return true;
373	0	else if (p1lim.first > p2lim.second)
374	0	return false;
375	0	else
376	0	QL_FAIL("undecidable comparison between " << p1 << " and " << p2);
377	0	}
378
379
380	0	Period operator+(const Period& p1, const Period& p2) {
381	0	Period result = p1;
382	0	result += p2;
383	0	return result;
384	0	}
385
386	0	Period operator-(const Period& p1, const Period& p2) {
387	0	return p1+(-p2);
388	0	}
389
390	0	Period operator/(const Period& p, Integer n) {
391	0	Period result = p;
392	0	result /= n;
393	0	return result;
394	0	}
395
396		// period formatting
397
398	0	std::ostream& operator<<(std::ostream& out, const Period& p) {
399	0	return out << io::short_period(p);
400	0	}
401
402		namespace detail {
403
404		std::ostream& operator<<(std::ostream& out,
405	0	const long_period_holder& holder) {
406	0	Integer n = holder.p.length();
407	0	switch (holder.p.units()) {
408	0	case Days:
409	0	return out << n << (n == 1 ? " day" : " days");
410	0	case Weeks:
411	0	return out << n << (n == 1 ? " week" : " weeks");
412	0	case Months:
413	0	return out << n << (n == 1 ? " month" : " months");
414	0	case Years:
415	0	return out << n << (n == 1 ? " year" : " years");
416	0	default:
417	0	QL_FAIL("unknown time unit (" << Integer(holder.p.units()) << ")");
418	0	}
419	0	}
420
421		std::ostream& operator<<(std::ostream& out,
422	0	const short_period_holder& holder) {
423	0	Integer n = holder.p.length();
424	0	switch (holder.p.units()) {
425	0	case Days:
426	0	return out << n << "D";
427	0	case Weeks:
428	0	return out << n << "W";
429	0	case Months:
430	0	return out << n << "M";
431	0	case Years:
432	0	return out << n << "Y";
433	0	default:
434	0	QL_FAIL("unknown time unit (" << Integer(holder.p.units()) << ")");
435	0	}
436	0	}
437
438		}
439
440		namespace io {
441
442	0	detail::long_period_holder long_period(const Period& p) {
443	0	return detail::long_period_holder(p);
444	0	}
445
446	0	detail::short_period_holder short_period(const Period& p) {
447	0	return detail::short_period_holder(p);
448	0	}
449
450		}
451
452		}