[apple/javascriptcore.git] / tests / mozilla / ecma / Date / 15.9.5.36-1.js

/* The contents of this file are subject to the Netscape Public
 * License Version 1.1 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.mozilla.org/NPL/
 *
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 *
 * The Original Code is Mozilla Communicator client code, released March
 * 31, 1998.
 *
 * The Initial Developer of the Original Code is Netscape Communications
 * Corporation. Portions created by Netscape are
 * Copyright (C) 1998 Netscape Communications Corporation. All
 * Rights Reserved.
 *
 * Contributor(s): 
 * 
 */
/**
    File Name:          15.9.5.36-1.js
    ECMA Section:       15.9.5.36 Date.prototype.setFullYear(year [, mon [, date ]] )
    Description:

    If mon is not specified, this behaves as if mon were specified with the
    value getMonth( ). If date is not specified, this behaves as if date were
    specified with the value getDate( ).

   1.   Let t be the result of LocalTime(this time value); but if this time
        value is NaN, let t be +0.
   2.   Call ToNumber(year).
   3.   If mon is not specified, compute MonthFromTime(t); otherwise, call
        ToNumber(mon).
   4.   If date is not specified, compute DateFromTime(t); otherwise, call
        ToNumber(date).
   5.   Compute MakeDay(Result(2), Result(3), Result(4)).
   6.   Compute UTC(MakeDate(Result(5), TimeWithinDay(t))).
   7.   Set the [[Value]] property of the this value to TimeClip(Result(6)).
   8.   Return the value of the [[Value]] property of the this value.

    Author:             christine@netscape.com
    Date:               12 november 1997

    Added test cases for Year 2000 Compatilibity Testing.

*/
    var SECTION = "15.9.5.36-1";
    var VERSION = "ECMA_1";
    startTest();

    writeHeaderToLog( SECTION + " Date.prototype.setFullYear(year [, mon [, date ]] )");

    getTestCases();
    test();

function test() {
    for ( tc=0; tc < testcases.length; tc++ ) {
        testcases[tc].passed = writeTestCaseResult(
                            testcases[tc].expect,
                            testcases[tc].actual,
                            testcases[tc].description +" = "+
                            testcases[tc].actual );

        testcases[tc].reason += ( testcases[tc].passed ) ? "" : "wrong value ";
    }
    stopTest();
    return ( testcases );
}
function getTestCases() {

    // 1969

    addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(1969);TDATE",
                    UTCDateFromTime(SetFullYear(0,1969)),
                    LocalDateFromTime(SetFullYear(0,1969)) );

    addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(1969,11);TDATE",
                    UTCDateFromTime(SetFullYear(0,1969,11)),
                    LocalDateFromTime(SetFullYear(0,1969,11)) );

    addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(1969,11,31);TDATE",
                    UTCDateFromTime(SetFullYear(0,1969,11,31)),
                    LocalDateFromTime(SetFullYear(0,1969,11,31)) );
/*
    // 1970

    addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(1970);TDATE",
                    UTCDateFromTime(SetFullYear(0,1970)),
                    LocalDateFromTime(SetFullYear(0,1970)) );

    addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(1970,0);TDATE",
                    UTCDateFromTime(SetFullYear(0,1970,0)),
                    LocalDateFromTime(SetFullYear(0,1970,0)) );

    addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(1970,0,1);TDATE",
                    UTCDateFromTime(SetFullYear(0,1970,0,1)),
                    LocalDateFromTime(SetFullYear(0,1970,0,1)) );
    // 1971
    addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(1971);TDATE",
                    UTCDateFromTime(SetFullYear(0,1971)),
                    LocalDateFromTime(SetFullYear(0,1971)) );

    addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(1971,0);TDATE",
                    UTCDateFromTime(SetFullYear(0,1971,0)),
                    LocalDateFromTime(SetFullYear(0,1971,0)) );

    addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(1971,0,1);TDATE",
                    UTCDateFromTime(SetFullYear(0,1971,0,1)),
                    LocalDateFromTime(SetFullYear(0,1971,0,1)) );

    // 1999
    addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(1999);TDATE",
                    UTCDateFromTime(SetFullYear(0,1999)),
                    LocalDateFromTime(SetFullYear(0,1999)) );

    addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(1999,11);TDATE",
                    UTCDateFromTime(SetFullYear(0,1999,11)),
                    LocalDateFromTime(SetFullYear(0,1999,11)) );

    addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(1999,11,31);TDATE",
                    UTCDateFromTime(SetFullYear(0,1999,11,31)),
                    LocalDateFromTime(SetFullYear(0,1999,11,31)) );

    // 2000
    addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(2000);TDATE",
                    UTCDateFromTime(SetFullYear(0,2000)),
                    LocalDateFromTime(SetFullYear(0,2000)) );

    addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(2000,0);TDATE",
                    UTCDateFromTime(SetFullYear(0,2000,0)),
                    LocalDateFromTime(SetFullYear(0,2000,0)) );

    addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(2000,0,1);TDATE",
                    UTCDateFromTime(SetFullYear(0,2000,0,1)),
                    LocalDateFromTime(SetFullYear(0,2000,0,1)) );

    // feb 29, 2000
    addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(2000);TDATE",
                    UTCDateFromTime(SetFullYear(0,2000)),
                    LocalDateFromTime(SetFullYear(0,2000)) );

    addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(2000,1);TDATE",
                    UTCDateFromTime(SetFullYear(0,2000,1)),
                    LocalDateFromTime(SetFullYear(0,2000,1)) );

    addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(2000,1,29);TDATE",
                    UTCDateFromTime(SetFullYear(0,2000,1,29)),
                    LocalDateFromTime(SetFullYear(0,2000,1,29)) );

    // Jan 1, 2005
    addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(2005);TDATE",
                    UTCDateFromTime(SetFullYear(0,2005)),
                    LocalDateFromTime(SetFullYear(0,2005)) );

    addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(2005,0);TDATE",
                    UTCDateFromTime(SetFullYear(0,2005,0)),
                    LocalDateFromTime(SetFullYear(0,2005,0)) );

    addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(2005,0,1);TDATE",
                    UTCDateFromTime(SetFullYear(0,2005,0,1)),
                    LocalDateFromTime(SetFullYear(0,2005,0,1)) );

*/
}
function addNewTestCase( DateString, UTCDate, LocalDate) {
    DateCase = eval( DateString );

    var item = testcases.length;

//    fixed_year = ( ExpectDate.year >=1900 || ExpectDate.year < 2000 ) ? ExpectDate.year - 1900 : ExpectDate.year;

    testcases[item++] = new TestCase( SECTION, DateString+".getTime()",             UTCDate.value,       DateCase.getTime() );
    testcases[item++] = new TestCase( SECTION, DateString+".valueOf()",             UTCDate.value,       DateCase.valueOf() );

    testcases[item++] = new TestCase( SECTION, DateString+".getUTCFullYear()",      UTCDate.year,    DateCase.getUTCFullYear() );
    testcases[item++] = new TestCase( SECTION, DateString+".getUTCMonth()",         UTCDate.month,  DateCase.getUTCMonth() );
    testcases[item++] = new TestCase( SECTION, DateString+".getUTCDate()",          UTCDate.date,   DateCase.getUTCDate() );
    testcases[item++] = new TestCase( SECTION, DateString+".getUTCDay()",           UTCDate.day,    DateCase.getUTCDay() );
    testcases[item++] = new TestCase( SECTION, DateString+".getUTCHours()",         UTCDate.hours,  DateCase.getUTCHours() );
    testcases[item++] = new TestCase( SECTION, DateString+".getUTCMinutes()",       UTCDate.minutes,DateCase.getUTCMinutes() );
    testcases[item++] = new TestCase( SECTION, DateString+".getUTCSeconds()",       UTCDate.seconds,DateCase.getUTCSeconds() );
    testcases[item++] = new TestCase( SECTION, DateString+".getUTCMilliseconds()",  UTCDate.ms,     DateCase.getUTCMilliseconds() );

    testcases[item++] = new TestCase( SECTION, DateString+".getFullYear()",         LocalDate.year,       DateCase.getFullYear() );
    testcases[item++] = new TestCase( SECTION, DateString+".getMonth()",            LocalDate.month,      DateCase.getMonth() );
    testcases[item++] = new TestCase( SECTION, DateString+".getDate()",             LocalDate.date,       DateCase.getDate() );
    testcases[item++] = new TestCase( SECTION, DateString+".getDay()",              LocalDate.day,        DateCase.getDay() );
    testcases[item++] = new TestCase( SECTION, DateString+".getHours()",            LocalDate.hours,      DateCase.getHours() );
    testcases[item++] = new TestCase( SECTION, DateString+".getMinutes()",          LocalDate.minutes,    DateCase.getMinutes() );
    testcases[item++] = new TestCase( SECTION, DateString+".getSeconds()",          LocalDate.seconds,    DateCase.getSeconds() );
    testcases[item++] = new TestCase( SECTION, DateString+".getMilliseconds()",     LocalDate.ms,         DateCase.getMilliseconds() );

    DateCase.toString = Object.prototype.toString;

    testcases[item++] = new TestCase( SECTION,
                                      DateString+".toString=Object.prototype.toString;"+DateString+".toString()",
                                      "[object Date]",
                                      DateCase.toString() );
}

function MyDate() {
    this.year = 0;
    this.month = 0;
    this.date = 0;
    this.hours = 0;
    this.minutes = 0;
    this.seconds = 0;
    this.ms = 0;
}
function LocalDateFromTime(t) {
    t = LocalTime(t);
    return ( MyDateFromTime(t) );
}
function UTCDateFromTime(t) {
 return ( MyDateFromTime(t) );
}
function MyDateFromTime( t ) {
    var d = new MyDate();
    d.year = YearFromTime(t);
    d.month = MonthFromTime(t);
    d.date = DateFromTime(t);
    d.hours = HourFromTime(t);
    d.minutes = MinFromTime(t);
    d.seconds = SecFromTime(t);
    d.ms = msFromTime(t);

    d.time = MakeTime( d.hours, d.minutes, d.seconds, d.ms );
    d.value = TimeClip( MakeDate( MakeDay( d.year, d.month, d.date ), d.time ) );
    d.day = WeekDay( d.value );

    return (d);
}
function SetFullYear( t, year, mon, date ) {
    var T = ( isNaN(t) ) ? 0 : LocalTime(t) ;
    var YEAR = Number( year );
    var MONTH = ( mon == void 0 ) ? MonthFromTime(T) : Number( mon );
    var DATE = ( date == void 0 ) ? DateFromTime(T)  : Number( date );

    var DAY = MakeDay( YEAR, MONTH, DATE );
    var UTC_DATE = UTC(MakeDate( DAY, TimeWithinDay(T)));

    return ( TimeClip(UTC_DATE) );
}
Commit	Line	Data
b37bf2e1 A	1	/* The contents of this file are subject to the Netscape Public
	2	* License Version 1.1 (the "License"); you may not use this file
	3	* except in compliance with the License. You may obtain a copy of
	4	* the License at http://www.mozilla.org/NPL/
	5	*
	6	* Software distributed under the License is distributed on an "AS
	7	* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
	8	* implied. See the License for the specific language governing
	9	* rights and limitations under the License.
	10	*
	11	* The Original Code is Mozilla Communicator client code, released March
	12	* 31, 1998.
	13	*
	14	* The Initial Developer of the Original Code is Netscape Communications
	15	* Corporation. Portions created by Netscape are
	16	* Copyright (C) 1998 Netscape Communications Corporation. All
	17	* Rights Reserved.
	18	*
	19	* Contributor(s):
	20	*
	21	*/
	22	/**
	23	File Name: 15.9.5.36-1.js
	24	ECMA Section: 15.9.5.36 Date.prototype.setFullYear(year [, mon [, date ]] )
	25	Description:
	26
	27	If mon is not specified, this behaves as if mon were specified with the
	28	value getMonth( ). If date is not specified, this behaves as if date were
	29	specified with the value getDate( ).
	30
	31	1. Let t be the result of LocalTime(this time value); but if this time
	32	value is NaN, let t be +0.
	33	2. Call ToNumber(year).
	34	3. If mon is not specified, compute MonthFromTime(t); otherwise, call
	35	ToNumber(mon).
	36	4. If date is not specified, compute DateFromTime(t); otherwise, call
	37	ToNumber(date).
	38	5. Compute MakeDay(Result(2), Result(3), Result(4)).
	39	6. Compute UTC(MakeDate(Result(5), TimeWithinDay(t))).
	40	7. Set the [[Value]] property of the this value to TimeClip(Result(6)).
	41	8. Return the value of the [[Value]] property of the this value.
	42
	43	Author: christine@netscape.com
	44	Date: 12 november 1997
	45
	46	Added test cases for Year 2000 Compatilibity Testing.
	47
	48	*/
	49	var SECTION = "15.9.5.36-1";
	50	var VERSION = "ECMA_1";
	51	startTest();
	52
	53	writeHeaderToLog( SECTION + " Date.prototype.setFullYear(year [, mon [, date ]] )");
	54
	55	getTestCases();
	56	test();
	57
	58	function test() {
	59	for ( tc=0; tc < testcases.length; tc++ ) {
	60	testcases[tc].passed = writeTestCaseResult(
	61	testcases[tc].expect,
	62	testcases[tc].actual,
	63	testcases[tc].description +" = "+
	64	testcases[tc].actual );
65
66	testcases[tc].reason += ( testcases[tc].passed ) ? "" : "wrong value ";
67	}
68	stopTest();
69	return ( testcases );
70	}
71	function getTestCases() {
72
73	// 1969
74
75	addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(1969);TDATE",
76	UTCDateFromTime(SetFullYear(0,1969)),
77	LocalDateFromTime(SetFullYear(0,1969)) );
78
79	addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(1969,11);TDATE",
80	UTCDateFromTime(SetFullYear(0,1969,11)),
81	LocalDateFromTime(SetFullYear(0,1969,11)) );
82
83	addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(1969,11,31);TDATE",
84	UTCDateFromTime(SetFullYear(0,1969,11,31)),
85	LocalDateFromTime(SetFullYear(0,1969,11,31)) );
86	/*
87	// 1970
88
89	addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(1970);TDATE",
90	UTCDateFromTime(SetFullYear(0,1970)),
91	LocalDateFromTime(SetFullYear(0,1970)) );
92
93	addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(1970,0);TDATE",
94	UTCDateFromTime(SetFullYear(0,1970,0)),
95	LocalDateFromTime(SetFullYear(0,1970,0)) );
96
97	addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(1970,0,1);TDATE",
98	UTCDateFromTime(SetFullYear(0,1970,0,1)),
99	LocalDateFromTime(SetFullYear(0,1970,0,1)) );
100	// 1971
101	addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(1971);TDATE",
102	UTCDateFromTime(SetFullYear(0,1971)),
103	LocalDateFromTime(SetFullYear(0,1971)) );
104
105	addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(1971,0);TDATE",
106	UTCDateFromTime(SetFullYear(0,1971,0)),
107	LocalDateFromTime(SetFullYear(0,1971,0)) );
108
109	addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(1971,0,1);TDATE",
110	UTCDateFromTime(SetFullYear(0,1971,0,1)),
111	LocalDateFromTime(SetFullYear(0,1971,0,1)) );
112
113	// 1999
114	addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(1999);TDATE",
115	UTCDateFromTime(SetFullYear(0,1999)),
116	LocalDateFromTime(SetFullYear(0,1999)) );
117
118	addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(1999,11);TDATE",
119	UTCDateFromTime(SetFullYear(0,1999,11)),
120	LocalDateFromTime(SetFullYear(0,1999,11)) );
121
122	addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(1999,11,31);TDATE",
123	UTCDateFromTime(SetFullYear(0,1999,11,31)),
124	LocalDateFromTime(SetFullYear(0,1999,11,31)) );
125
126	// 2000
127	addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(2000);TDATE",
128	UTCDateFromTime(SetFullYear(0,2000)),
129	LocalDateFromTime(SetFullYear(0,2000)) );
130
131	addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(2000,0);TDATE",
132	UTCDateFromTime(SetFullYear(0,2000,0)),
133	LocalDateFromTime(SetFullYear(0,2000,0)) );
134
135	addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(2000,0,1);TDATE",
136	UTCDateFromTime(SetFullYear(0,2000,0,1)),
137	LocalDateFromTime(SetFullYear(0,2000,0,1)) );
138
139	// feb 29, 2000
140	addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(2000);TDATE",
141	UTCDateFromTime(SetFullYear(0,2000)),
142	LocalDateFromTime(SetFullYear(0,2000)) );
143
144	addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(2000,1);TDATE",
145	UTCDateFromTime(SetFullYear(0,2000,1)),
146	LocalDateFromTime(SetFullYear(0,2000,1)) );
147
148	addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(2000,1,29);TDATE",
149	UTCDateFromTime(SetFullYear(0,2000,1,29)),
150	LocalDateFromTime(SetFullYear(0,2000,1,29)) );
151
152	// Jan 1, 2005
153	addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(2005);TDATE",
154	UTCDateFromTime(SetFullYear(0,2005)),
155	LocalDateFromTime(SetFullYear(0,2005)) );
156
157	addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(2005,0);TDATE",
158	UTCDateFromTime(SetFullYear(0,2005,0)),
159	LocalDateFromTime(SetFullYear(0,2005,0)) );
160
161	addNewTestCase( "TDATE = new Date(0);(TDATE).setFullYear(2005,0,1);TDATE",
162	UTCDateFromTime(SetFullYear(0,2005,0,1)),
163	LocalDateFromTime(SetFullYear(0,2005,0,1)) );
164
165	*/
166	}
167	function addNewTestCase( DateString, UTCDate, LocalDate) {
168	DateCase = eval( DateString );
169
170	var item = testcases.length;
171
172	// fixed_year = ( ExpectDate.year >=1900 \|\| ExpectDate.year < 2000 ) ? ExpectDate.year - 1900 : ExpectDate.year;
173
174	testcases[item++] = new TestCase( SECTION, DateString+".getTime()", UTCDate.value, DateCase.getTime() );
175	testcases[item++] = new TestCase( SECTION, DateString+".valueOf()", UTCDate.value, DateCase.valueOf() );
176
177	testcases[item++] = new TestCase( SECTION, DateString+".getUTCFullYear()", UTCDate.year, DateCase.getUTCFullYear() );
178	testcases[item++] = new TestCase( SECTION, DateString+".getUTCMonth()", UTCDate.month, DateCase.getUTCMonth() );
179	testcases[item++] = new TestCase( SECTION, DateString+".getUTCDate()", UTCDate.date, DateCase.getUTCDate() );
180	testcases[item++] = new TestCase( SECTION, DateString+".getUTCDay()", UTCDate.day, DateCase.getUTCDay() );
181	testcases[item++] = new TestCase( SECTION, DateString+".getUTCHours()", UTCDate.hours, DateCase.getUTCHours() );
182	testcases[item++] = new TestCase( SECTION, DateString+".getUTCMinutes()", UTCDate.minutes,DateCase.getUTCMinutes() );
183	testcases[item++] = new TestCase( SECTION, DateString+".getUTCSeconds()", UTCDate.seconds,DateCase.getUTCSeconds() );
184	testcases[item++] = new TestCase( SECTION, DateString+".getUTCMilliseconds()", UTCDate.ms, DateCase.getUTCMilliseconds() );
185
186	testcases[item++] = new TestCase( SECTION, DateString+".getFullYear()", LocalDate.year, DateCase.getFullYear() );
187	testcases[item++] = new TestCase( SECTION, DateString+".getMonth()", LocalDate.month, DateCase.getMonth() );
188	testcases[item++] = new TestCase( SECTION, DateString+".getDate()", LocalDate.date, DateCase.getDate() );
189	testcases[item++] = new TestCase( SECTION, DateString+".getDay()", LocalDate.day, DateCase.getDay() );
190	testcases[item++] = new TestCase( SECTION, DateString+".getHours()", LocalDate.hours, DateCase.getHours() );
191	testcases[item++] = new TestCase( SECTION, DateString+".getMinutes()", LocalDate.minutes, DateCase.getMinutes() );
192	testcases[item++] = new TestCase( SECTION, DateString+".getSeconds()", LocalDate.seconds, DateCase.getSeconds() );
193	testcases[item++] = new TestCase( SECTION, DateString+".getMilliseconds()", LocalDate.ms, DateCase.getMilliseconds() );
194
195	DateCase.toString = Object.prototype.toString;
196
197	testcases[item++] = new TestCase( SECTION,
198	DateString+".toString=Object.prototype.toString;"+DateString+".toString()",
199	"[object Date]",
200	DateCase.toString() );
201	}
202
203	function MyDate() {
204	this.year = 0;
205	this.month = 0;
206	this.date = 0;
207	this.hours = 0;
208	this.minutes = 0;
209	this.seconds = 0;
210	this.ms = 0;
211	}
212	function LocalDateFromTime(t) {
213	t = LocalTime(t);
214	return ( MyDateFromTime(t) );
215	}
216	function UTCDateFromTime(t) {
217	return ( MyDateFromTime(t) );
218	}
219	function MyDateFromTime( t ) {
220	var d = new MyDate();
221	d.year = YearFromTime(t);
222	d.month = MonthFromTime(t);
223	d.date = DateFromTime(t);
224	d.hours = HourFromTime(t);
225	d.minutes = MinFromTime(t);
226	d.seconds = SecFromTime(t);
227	d.ms = msFromTime(t);
228
229	d.time = MakeTime( d.hours, d.minutes, d.seconds, d.ms );
230	d.value = TimeClip( MakeDate( MakeDay( d.year, d.month, d.date ), d.time ) );
231	d.day = WeekDay( d.value );
232
233	return (d);
234	}
235	function SetFullYear( t, year, mon, date ) {
236	var T = ( isNaN(t) ) ? 0 : LocalTime(t) ;
237	var YEAR = Number( year );
238	var MONTH = ( mon == void 0 ) ? MonthFromTime(T) : Number( mon );
239	var DATE = ( date == void 0 ) ? DateFromTime(T) : Number( date );
240
241	var DAY = MakeDay( YEAR, MONTH, DATE );
242	var UTC_DATE = UTC(MakeDate( DAY, TimeWithinDay(T)));
243
244	return ( TimeClip(UTC_DATE) );
245	}