source: trip-planner-front/node_modules/@xtuc/long/src/long.js@ bdd6491

Last change on this file since bdd6491 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

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1module.exports = Long;
2
3/**
4 * wasm optimizations, to do native i64 multiplication and divide
5 */
6var wasm = null;
7
8try {
9 wasm = new WebAssembly.Instance(new WebAssembly.Module(new Uint8Array([
10 0, 97, 115, 109, 1, 0, 0, 0, 1, 13, 2, 96, 0, 1, 127, 96, 4, 127, 127, 127, 127, 1, 127, 3, 7, 6, 0, 1, 1, 1, 1, 1, 6, 6, 1, 127, 1, 65, 0, 11, 7, 50, 6, 3, 109, 117, 108, 0, 1, 5, 100, 105, 118, 95, 115, 0, 2, 5, 100, 105, 118, 95, 117, 0, 3, 5, 114, 101, 109, 95, 115, 0, 4, 5, 114, 101, 109, 95, 117, 0, 5, 8, 103, 101, 116, 95, 104, 105, 103, 104, 0, 0, 10, 191, 1, 6, 4, 0, 35, 0, 11, 36, 1, 1, 126, 32, 0, 173, 32, 1, 173, 66, 32, 134, 132, 32, 2, 173, 32, 3, 173, 66, 32, 134, 132, 126, 34, 4, 66, 32, 135, 167, 36, 0, 32, 4, 167, 11, 36, 1, 1, 126, 32, 0, 173, 32, 1, 173, 66, 32, 134, 132, 32, 2, 173, 32, 3, 173, 66, 32, 134, 132, 127, 34, 4, 66, 32, 135, 167, 36, 0, 32, 4, 167, 11, 36, 1, 1, 126, 32, 0, 173, 32, 1, 173, 66, 32, 134, 132, 32, 2, 173, 32, 3, 173, 66, 32, 134, 132, 128, 34, 4, 66, 32, 135, 167, 36, 0, 32, 4, 167, 11, 36, 1, 1, 126, 32, 0, 173, 32, 1, 173, 66, 32, 134, 132, 32, 2, 173, 32, 3, 173, 66, 32, 134, 132, 129, 34, 4, 66, 32, 135, 167, 36, 0, 32, 4, 167, 11, 36, 1, 1, 126, 32, 0, 173, 32, 1, 173, 66, 32, 134, 132, 32, 2, 173, 32, 3, 173, 66, 32, 134, 132, 130, 34, 4, 66, 32, 135, 167, 36, 0, 32, 4, 167, 11
11 ])), {}).exports;
12} catch (e) {
13 // no wasm support :(
14}
15
16/**
17 * Constructs a 64 bit two's-complement integer, given its low and high 32 bit values as *signed* integers.
18 * See the from* functions below for more convenient ways of constructing Longs.
19 * @exports Long
20 * @class A Long class for representing a 64 bit two's-complement integer value.
21 * @param {number} low The low (signed) 32 bits of the long
22 * @param {number} high The high (signed) 32 bits of the long
23 * @param {boolean=} unsigned Whether unsigned or not, defaults to signed
24 * @constructor
25 */
26function Long(low, high, unsigned) {
27
28 /**
29 * The low 32 bits as a signed value.
30 * @type {number}
31 */
32 this.low = low | 0;
33
34 /**
35 * The high 32 bits as a signed value.
36 * @type {number}
37 */
38 this.high = high | 0;
39
40 /**
41 * Whether unsigned or not.
42 * @type {boolean}
43 */
44 this.unsigned = !!unsigned;
45}
46
47// The internal representation of a long is the two given signed, 32-bit values.
48// We use 32-bit pieces because these are the size of integers on which
49// Javascript performs bit-operations. For operations like addition and
50// multiplication, we split each number into 16 bit pieces, which can easily be
51// multiplied within Javascript's floating-point representation without overflow
52// or change in sign.
53//
54// In the algorithms below, we frequently reduce the negative case to the
55// positive case by negating the input(s) and then post-processing the result.
56// Note that we must ALWAYS check specially whether those values are MIN_VALUE
57// (-2^63) because -MIN_VALUE == MIN_VALUE (since 2^63 cannot be represented as
58// a positive number, it overflows back into a negative). Not handling this
59// case would often result in infinite recursion.
60//
61// Common constant values ZERO, ONE, NEG_ONE, etc. are defined below the from*
62// methods on which they depend.
63
64/**
65 * An indicator used to reliably determine if an object is a Long or not.
66 * @type {boolean}
67 * @const
68 * @private
69 */
70Long.prototype.__isLong__;
71
72Object.defineProperty(Long.prototype, "__isLong__", { value: true });
73
74/**
75 * @function
76 * @param {*} obj Object
77 * @returns {boolean}
78 * @inner
79 */
80function isLong(obj) {
81 return (obj && obj["__isLong__"]) === true;
82}
83
84/**
85 * Tests if the specified object is a Long.
86 * @function
87 * @param {*} obj Object
88 * @returns {boolean}
89 */
90Long.isLong = isLong;
91
92/**
93 * A cache of the Long representations of small integer values.
94 * @type {!Object}
95 * @inner
96 */
97var INT_CACHE = {};
98
99/**
100 * A cache of the Long representations of small unsigned integer values.
101 * @type {!Object}
102 * @inner
103 */
104var UINT_CACHE = {};
105
106/**
107 * @param {number} value
108 * @param {boolean=} unsigned
109 * @returns {!Long}
110 * @inner
111 */
112function fromInt(value, unsigned) {
113 var obj, cachedObj, cache;
114 if (unsigned) {
115 value >>>= 0;
116 if (cache = (0 <= value && value < 256)) {
117 cachedObj = UINT_CACHE[value];
118 if (cachedObj)
119 return cachedObj;
120 }
121 obj = fromBits(value, (value | 0) < 0 ? -1 : 0, true);
122 if (cache)
123 UINT_CACHE[value] = obj;
124 return obj;
125 } else {
126 value |= 0;
127 if (cache = (-128 <= value && value < 128)) {
128 cachedObj = INT_CACHE[value];
129 if (cachedObj)
130 return cachedObj;
131 }
132 obj = fromBits(value, value < 0 ? -1 : 0, false);
133 if (cache)
134 INT_CACHE[value] = obj;
135 return obj;
136 }
137}
138
139/**
140 * Returns a Long representing the given 32 bit integer value.
141 * @function
142 * @param {number} value The 32 bit integer in question
143 * @param {boolean=} unsigned Whether unsigned or not, defaults to signed
144 * @returns {!Long} The corresponding Long value
145 */
146Long.fromInt = fromInt;
147
148/**
149 * @param {number} value
150 * @param {boolean=} unsigned
151 * @returns {!Long}
152 * @inner
153 */
154function fromNumber(value, unsigned) {
155 if (isNaN(value))
156 return unsigned ? UZERO : ZERO;
157 if (unsigned) {
158 if (value < 0)
159 return UZERO;
160 if (value >= TWO_PWR_64_DBL)
161 return MAX_UNSIGNED_VALUE;
162 } else {
163 if (value <= -TWO_PWR_63_DBL)
164 return MIN_VALUE;
165 if (value + 1 >= TWO_PWR_63_DBL)
166 return MAX_VALUE;
167 }
168 if (value < 0)
169 return fromNumber(-value, unsigned).neg();
170 return fromBits((value % TWO_PWR_32_DBL) | 0, (value / TWO_PWR_32_DBL) | 0, unsigned);
171}
172
173/**
174 * Returns a Long representing the given value, provided that it is a finite number. Otherwise, zero is returned.
175 * @function
176 * @param {number} value The number in question
177 * @param {boolean=} unsigned Whether unsigned or not, defaults to signed
178 * @returns {!Long} The corresponding Long value
179 */
180Long.fromNumber = fromNumber;
181
182/**
183 * @param {number} lowBits
184 * @param {number} highBits
185 * @param {boolean=} unsigned
186 * @returns {!Long}
187 * @inner
188 */
189function fromBits(lowBits, highBits, unsigned) {
190 return new Long(lowBits, highBits, unsigned);
191}
192
193/**
194 * Returns a Long representing the 64 bit integer that comes by concatenating the given low and high bits. Each is
195 * assumed to use 32 bits.
196 * @function
197 * @param {number} lowBits The low 32 bits
198 * @param {number} highBits The high 32 bits
199 * @param {boolean=} unsigned Whether unsigned or not, defaults to signed
200 * @returns {!Long} The corresponding Long value
201 */
202Long.fromBits = fromBits;
203
204/**
205 * @function
206 * @param {number} base
207 * @param {number} exponent
208 * @returns {number}
209 * @inner
210 */
211var pow_dbl = Math.pow; // Used 4 times (4*8 to 15+4)
212
213/**
214 * @param {string} str
215 * @param {(boolean|number)=} unsigned
216 * @param {number=} radix
217 * @returns {!Long}
218 * @inner
219 */
220function fromString(str, unsigned, radix) {
221 if (str.length === 0)
222 throw Error('empty string');
223 if (str === "NaN" || str === "Infinity" || str === "+Infinity" || str === "-Infinity")
224 return ZERO;
225 if (typeof unsigned === 'number') {
226 // For goog.math.long compatibility
227 radix = unsigned,
228 unsigned = false;
229 } else {
230 unsigned = !! unsigned;
231 }
232 radix = radix || 10;
233 if (radix < 2 || 36 < radix)
234 throw RangeError('radix');
235
236 var p;
237 if ((p = str.indexOf('-')) > 0)
238 throw Error('interior hyphen');
239 else if (p === 0) {
240 return fromString(str.substring(1), unsigned, radix).neg();
241 }
242
243 // Do several (8) digits each time through the loop, so as to
244 // minimize the calls to the very expensive emulated div.
245 var radixToPower = fromNumber(pow_dbl(radix, 8));
246
247 var result = ZERO;
248 for (var i = 0; i < str.length; i += 8) {
249 var size = Math.min(8, str.length - i),
250 value = parseInt(str.substring(i, i + size), radix);
251 if (size < 8) {
252 var power = fromNumber(pow_dbl(radix, size));
253 result = result.mul(power).add(fromNumber(value));
254 } else {
255 result = result.mul(radixToPower);
256 result = result.add(fromNumber(value));
257 }
258 }
259 result.unsigned = unsigned;
260 return result;
261}
262
263/**
264 * Returns a Long representation of the given string, written using the specified radix.
265 * @function
266 * @param {string} str The textual representation of the Long
267 * @param {(boolean|number)=} unsigned Whether unsigned or not, defaults to signed
268 * @param {number=} radix The radix in which the text is written (2-36), defaults to 10
269 * @returns {!Long} The corresponding Long value
270 */
271Long.fromString = fromString;
272
273/**
274 * @function
275 * @param {!Long|number|string|!{low: number, high: number, unsigned: boolean}} val
276 * @param {boolean=} unsigned
277 * @returns {!Long}
278 * @inner
279 */
280function fromValue(val, unsigned) {
281 if (typeof val === 'number')
282 return fromNumber(val, unsigned);
283 if (typeof val === 'string')
284 return fromString(val, unsigned);
285 // Throws for non-objects, converts non-instanceof Long:
286 return fromBits(val.low, val.high, typeof unsigned === 'boolean' ? unsigned : val.unsigned);
287}
288
289/**
290 * Converts the specified value to a Long using the appropriate from* function for its type.
291 * @function
292 * @param {!Long|number|string|!{low: number, high: number, unsigned: boolean}} val Value
293 * @param {boolean=} unsigned Whether unsigned or not, defaults to signed
294 * @returns {!Long}
295 */
296Long.fromValue = fromValue;
297
298// NOTE: the compiler should inline these constant values below and then remove these variables, so there should be
299// no runtime penalty for these.
300
301/**
302 * @type {number}
303 * @const
304 * @inner
305 */
306var TWO_PWR_16_DBL = 1 << 16;
307
308/**
309 * @type {number}
310 * @const
311 * @inner
312 */
313var TWO_PWR_24_DBL = 1 << 24;
314
315/**
316 * @type {number}
317 * @const
318 * @inner
319 */
320var TWO_PWR_32_DBL = TWO_PWR_16_DBL * TWO_PWR_16_DBL;
321
322/**
323 * @type {number}
324 * @const
325 * @inner
326 */
327var TWO_PWR_64_DBL = TWO_PWR_32_DBL * TWO_PWR_32_DBL;
328
329/**
330 * @type {number}
331 * @const
332 * @inner
333 */
334var TWO_PWR_63_DBL = TWO_PWR_64_DBL / 2;
335
336/**
337 * @type {!Long}
338 * @const
339 * @inner
340 */
341var TWO_PWR_24 = fromInt(TWO_PWR_24_DBL);
342
343/**
344 * @type {!Long}
345 * @inner
346 */
347var ZERO = fromInt(0);
348
349/**
350 * Signed zero.
351 * @type {!Long}
352 */
353Long.ZERO = ZERO;
354
355/**
356 * @type {!Long}
357 * @inner
358 */
359var UZERO = fromInt(0, true);
360
361/**
362 * Unsigned zero.
363 * @type {!Long}
364 */
365Long.UZERO = UZERO;
366
367/**
368 * @type {!Long}
369 * @inner
370 */
371var ONE = fromInt(1);
372
373/**
374 * Signed one.
375 * @type {!Long}
376 */
377Long.ONE = ONE;
378
379/**
380 * @type {!Long}
381 * @inner
382 */
383var UONE = fromInt(1, true);
384
385/**
386 * Unsigned one.
387 * @type {!Long}
388 */
389Long.UONE = UONE;
390
391/**
392 * @type {!Long}
393 * @inner
394 */
395var NEG_ONE = fromInt(-1);
396
397/**
398 * Signed negative one.
399 * @type {!Long}
400 */
401Long.NEG_ONE = NEG_ONE;
402
403/**
404 * @type {!Long}
405 * @inner
406 */
407var MAX_VALUE = fromBits(0xFFFFFFFF|0, 0x7FFFFFFF|0, false);
408
409/**
410 * Maximum signed value.
411 * @type {!Long}
412 */
413Long.MAX_VALUE = MAX_VALUE;
414
415/**
416 * @type {!Long}
417 * @inner
418 */
419var MAX_UNSIGNED_VALUE = fromBits(0xFFFFFFFF|0, 0xFFFFFFFF|0, true);
420
421/**
422 * Maximum unsigned value.
423 * @type {!Long}
424 */
425Long.MAX_UNSIGNED_VALUE = MAX_UNSIGNED_VALUE;
426
427/**
428 * @type {!Long}
429 * @inner
430 */
431var MIN_VALUE = fromBits(0, 0x80000000|0, false);
432
433/**
434 * Minimum signed value.
435 * @type {!Long}
436 */
437Long.MIN_VALUE = MIN_VALUE;
438
439/**
440 * @alias Long.prototype
441 * @inner
442 */
443var LongPrototype = Long.prototype;
444
445/**
446 * Converts the Long to a 32 bit integer, assuming it is a 32 bit integer.
447 * @this {!Long}
448 * @returns {number}
449 */
450LongPrototype.toInt = function toInt() {
451 return this.unsigned ? this.low >>> 0 : this.low;
452};
453
454/**
455 * Converts the Long to a the nearest floating-point representation of this value (double, 53 bit mantissa).
456 * @this {!Long}
457 * @returns {number}
458 */
459LongPrototype.toNumber = function toNumber() {
460 if (this.unsigned)
461 return ((this.high >>> 0) * TWO_PWR_32_DBL) + (this.low >>> 0);
462 return this.high * TWO_PWR_32_DBL + (this.low >>> 0);
463};
464
465/**
466 * Converts the Long to a string written in the specified radix.
467 * @this {!Long}
468 * @param {number=} radix Radix (2-36), defaults to 10
469 * @returns {string}
470 * @override
471 * @throws {RangeError} If `radix` is out of range
472 */
473LongPrototype.toString = function toString(radix) {
474 radix = radix || 10;
475 if (radix < 2 || 36 < radix)
476 throw RangeError('radix');
477 if (this.isZero())
478 return '0';
479 if (this.isNegative()) { // Unsigned Longs are never negative
480 if (this.eq(MIN_VALUE)) {
481 // We need to change the Long value before it can be negated, so we remove
482 // the bottom-most digit in this base and then recurse to do the rest.
483 var radixLong = fromNumber(radix),
484 div = this.div(radixLong),
485 rem1 = div.mul(radixLong).sub(this);
486 return div.toString(radix) + rem1.toInt().toString(radix);
487 } else
488 return '-' + this.neg().toString(radix);
489 }
490
491 // Do several (6) digits each time through the loop, so as to
492 // minimize the calls to the very expensive emulated div.
493 var radixToPower = fromNumber(pow_dbl(radix, 6), this.unsigned),
494 rem = this;
495 var result = '';
496 while (true) {
497 var remDiv = rem.div(radixToPower),
498 intval = rem.sub(remDiv.mul(radixToPower)).toInt() >>> 0,
499 digits = intval.toString(radix);
500 rem = remDiv;
501 if (rem.isZero())
502 return digits + result;
503 else {
504 while (digits.length < 6)
505 digits = '0' + digits;
506 result = '' + digits + result;
507 }
508 }
509};
510
511/**
512 * Gets the high 32 bits as a signed integer.
513 * @this {!Long}
514 * @returns {number} Signed high bits
515 */
516LongPrototype.getHighBits = function getHighBits() {
517 return this.high;
518};
519
520/**
521 * Gets the high 32 bits as an unsigned integer.
522 * @this {!Long}
523 * @returns {number} Unsigned high bits
524 */
525LongPrototype.getHighBitsUnsigned = function getHighBitsUnsigned() {
526 return this.high >>> 0;
527};
528
529/**
530 * Gets the low 32 bits as a signed integer.
531 * @this {!Long}
532 * @returns {number} Signed low bits
533 */
534LongPrototype.getLowBits = function getLowBits() {
535 return this.low;
536};
537
538/**
539 * Gets the low 32 bits as an unsigned integer.
540 * @this {!Long}
541 * @returns {number} Unsigned low bits
542 */
543LongPrototype.getLowBitsUnsigned = function getLowBitsUnsigned() {
544 return this.low >>> 0;
545};
546
547/**
548 * Gets the number of bits needed to represent the absolute value of this Long.
549 * @this {!Long}
550 * @returns {number}
551 */
552LongPrototype.getNumBitsAbs = function getNumBitsAbs() {
553 if (this.isNegative()) // Unsigned Longs are never negative
554 return this.eq(MIN_VALUE) ? 64 : this.neg().getNumBitsAbs();
555 var val = this.high != 0 ? this.high : this.low;
556 for (var bit = 31; bit > 0; bit--)
557 if ((val & (1 << bit)) != 0)
558 break;
559 return this.high != 0 ? bit + 33 : bit + 1;
560};
561
562/**
563 * Tests if this Long's value equals zero.
564 * @this {!Long}
565 * @returns {boolean}
566 */
567LongPrototype.isZero = function isZero() {
568 return this.high === 0 && this.low === 0;
569};
570
571/**
572 * Tests if this Long's value equals zero. This is an alias of {@link Long#isZero}.
573 * @returns {boolean}
574 */
575LongPrototype.eqz = LongPrototype.isZero;
576
577/**
578 * Tests if this Long's value is negative.
579 * @this {!Long}
580 * @returns {boolean}
581 */
582LongPrototype.isNegative = function isNegative() {
583 return !this.unsigned && this.high < 0;
584};
585
586/**
587 * Tests if this Long's value is positive.
588 * @this {!Long}
589 * @returns {boolean}
590 */
591LongPrototype.isPositive = function isPositive() {
592 return this.unsigned || this.high >= 0;
593};
594
595/**
596 * Tests if this Long's value is odd.
597 * @this {!Long}
598 * @returns {boolean}
599 */
600LongPrototype.isOdd = function isOdd() {
601 return (this.low & 1) === 1;
602};
603
604/**
605 * Tests if this Long's value is even.
606 * @this {!Long}
607 * @returns {boolean}
608 */
609LongPrototype.isEven = function isEven() {
610 return (this.low & 1) === 0;
611};
612
613/**
614 * Tests if this Long's value equals the specified's.
615 * @this {!Long}
616 * @param {!Long|number|string} other Other value
617 * @returns {boolean}
618 */
619LongPrototype.equals = function equals(other) {
620 if (!isLong(other))
621 other = fromValue(other);
622 if (this.unsigned !== other.unsigned && (this.high >>> 31) === 1 && (other.high >>> 31) === 1)
623 return false;
624 return this.high === other.high && this.low === other.low;
625};
626
627/**
628 * Tests if this Long's value equals the specified's. This is an alias of {@link Long#equals}.
629 * @function
630 * @param {!Long|number|string} other Other value
631 * @returns {boolean}
632 */
633LongPrototype.eq = LongPrototype.equals;
634
635/**
636 * Tests if this Long's value differs from the specified's.
637 * @this {!Long}
638 * @param {!Long|number|string} other Other value
639 * @returns {boolean}
640 */
641LongPrototype.notEquals = function notEquals(other) {
642 return !this.eq(/* validates */ other);
643};
644
645/**
646 * Tests if this Long's value differs from the specified's. This is an alias of {@link Long#notEquals}.
647 * @function
648 * @param {!Long|number|string} other Other value
649 * @returns {boolean}
650 */
651LongPrototype.neq = LongPrototype.notEquals;
652
653/**
654 * Tests if this Long's value differs from the specified's. This is an alias of {@link Long#notEquals}.
655 * @function
656 * @param {!Long|number|string} other Other value
657 * @returns {boolean}
658 */
659LongPrototype.ne = LongPrototype.notEquals;
660
661/**
662 * Tests if this Long's value is less than the specified's.
663 * @this {!Long}
664 * @param {!Long|number|string} other Other value
665 * @returns {boolean}
666 */
667LongPrototype.lessThan = function lessThan(other) {
668 return this.comp(/* validates */ other) < 0;
669};
670
671/**
672 * Tests if this Long's value is less than the specified's. This is an alias of {@link Long#lessThan}.
673 * @function
674 * @param {!Long|number|string} other Other value
675 * @returns {boolean}
676 */
677LongPrototype.lt = LongPrototype.lessThan;
678
679/**
680 * Tests if this Long's value is less than or equal the specified's.
681 * @this {!Long}
682 * @param {!Long|number|string} other Other value
683 * @returns {boolean}
684 */
685LongPrototype.lessThanOrEqual = function lessThanOrEqual(other) {
686 return this.comp(/* validates */ other) <= 0;
687};
688
689/**
690 * Tests if this Long's value is less than or equal the specified's. This is an alias of {@link Long#lessThanOrEqual}.
691 * @function
692 * @param {!Long|number|string} other Other value
693 * @returns {boolean}
694 */
695LongPrototype.lte = LongPrototype.lessThanOrEqual;
696
697/**
698 * Tests if this Long's value is less than or equal the specified's. This is an alias of {@link Long#lessThanOrEqual}.
699 * @function
700 * @param {!Long|number|string} other Other value
701 * @returns {boolean}
702 */
703LongPrototype.le = LongPrototype.lessThanOrEqual;
704
705/**
706 * Tests if this Long's value is greater than the specified's.
707 * @this {!Long}
708 * @param {!Long|number|string} other Other value
709 * @returns {boolean}
710 */
711LongPrototype.greaterThan = function greaterThan(other) {
712 return this.comp(/* validates */ other) > 0;
713};
714
715/**
716 * Tests if this Long's value is greater than the specified's. This is an alias of {@link Long#greaterThan}.
717 * @function
718 * @param {!Long|number|string} other Other value
719 * @returns {boolean}
720 */
721LongPrototype.gt = LongPrototype.greaterThan;
722
723/**
724 * Tests if this Long's value is greater than or equal the specified's.
725 * @this {!Long}
726 * @param {!Long|number|string} other Other value
727 * @returns {boolean}
728 */
729LongPrototype.greaterThanOrEqual = function greaterThanOrEqual(other) {
730 return this.comp(/* validates */ other) >= 0;
731};
732
733/**
734 * Tests if this Long's value is greater than or equal the specified's. This is an alias of {@link Long#greaterThanOrEqual}.
735 * @function
736 * @param {!Long|number|string} other Other value
737 * @returns {boolean}
738 */
739LongPrototype.gte = LongPrototype.greaterThanOrEqual;
740
741/**
742 * Tests if this Long's value is greater than or equal the specified's. This is an alias of {@link Long#greaterThanOrEqual}.
743 * @function
744 * @param {!Long|number|string} other Other value
745 * @returns {boolean}
746 */
747LongPrototype.ge = LongPrototype.greaterThanOrEqual;
748
749/**
750 * Compares this Long's value with the specified's.
751 * @this {!Long}
752 * @param {!Long|number|string} other Other value
753 * @returns {number} 0 if they are the same, 1 if the this is greater and -1
754 * if the given one is greater
755 */
756LongPrototype.compare = function compare(other) {
757 if (!isLong(other))
758 other = fromValue(other);
759 if (this.eq(other))
760 return 0;
761 var thisNeg = this.isNegative(),
762 otherNeg = other.isNegative();
763 if (thisNeg && !otherNeg)
764 return -1;
765 if (!thisNeg && otherNeg)
766 return 1;
767 // At this point the sign bits are the same
768 if (!this.unsigned)
769 return this.sub(other).isNegative() ? -1 : 1;
770 // Both are positive if at least one is unsigned
771 return (other.high >>> 0) > (this.high >>> 0) || (other.high === this.high && (other.low >>> 0) > (this.low >>> 0)) ? -1 : 1;
772};
773
774/**
775 * Compares this Long's value with the specified's. This is an alias of {@link Long#compare}.
776 * @function
777 * @param {!Long|number|string} other Other value
778 * @returns {number} 0 if they are the same, 1 if the this is greater and -1
779 * if the given one is greater
780 */
781LongPrototype.comp = LongPrototype.compare;
782
783/**
784 * Negates this Long's value.
785 * @this {!Long}
786 * @returns {!Long} Negated Long
787 */
788LongPrototype.negate = function negate() {
789 if (!this.unsigned && this.eq(MIN_VALUE))
790 return MIN_VALUE;
791 return this.not().add(ONE);
792};
793
794/**
795 * Negates this Long's value. This is an alias of {@link Long#negate}.
796 * @function
797 * @returns {!Long} Negated Long
798 */
799LongPrototype.neg = LongPrototype.negate;
800
801/**
802 * Returns the sum of this and the specified Long.
803 * @this {!Long}
804 * @param {!Long|number|string} addend Addend
805 * @returns {!Long} Sum
806 */
807LongPrototype.add = function add(addend) {
808 if (!isLong(addend))
809 addend = fromValue(addend);
810
811 // Divide each number into 4 chunks of 16 bits, and then sum the chunks.
812
813 var a48 = this.high >>> 16;
814 var a32 = this.high & 0xFFFF;
815 var a16 = this.low >>> 16;
816 var a00 = this.low & 0xFFFF;
817
818 var b48 = addend.high >>> 16;
819 var b32 = addend.high & 0xFFFF;
820 var b16 = addend.low >>> 16;
821 var b00 = addend.low & 0xFFFF;
822
823 var c48 = 0, c32 = 0, c16 = 0, c00 = 0;
824 c00 += a00 + b00;
825 c16 += c00 >>> 16;
826 c00 &= 0xFFFF;
827 c16 += a16 + b16;
828 c32 += c16 >>> 16;
829 c16 &= 0xFFFF;
830 c32 += a32 + b32;
831 c48 += c32 >>> 16;
832 c32 &= 0xFFFF;
833 c48 += a48 + b48;
834 c48 &= 0xFFFF;
835 return fromBits((c16 << 16) | c00, (c48 << 16) | c32, this.unsigned);
836};
837
838/**
839 * Returns the difference of this and the specified Long.
840 * @this {!Long}
841 * @param {!Long|number|string} subtrahend Subtrahend
842 * @returns {!Long} Difference
843 */
844LongPrototype.subtract = function subtract(subtrahend) {
845 if (!isLong(subtrahend))
846 subtrahend = fromValue(subtrahend);
847 return this.add(subtrahend.neg());
848};
849
850/**
851 * Returns the difference of this and the specified Long. This is an alias of {@link Long#subtract}.
852 * @function
853 * @param {!Long|number|string} subtrahend Subtrahend
854 * @returns {!Long} Difference
855 */
856LongPrototype.sub = LongPrototype.subtract;
857
858/**
859 * Returns the product of this and the specified Long.
860 * @this {!Long}
861 * @param {!Long|number|string} multiplier Multiplier
862 * @returns {!Long} Product
863 */
864LongPrototype.multiply = function multiply(multiplier) {
865 if (this.isZero())
866 return ZERO;
867 if (!isLong(multiplier))
868 multiplier = fromValue(multiplier);
869
870 // use wasm support if present
871 if (wasm) {
872 var low = wasm["mul"](this.low,
873 this.high,
874 multiplier.low,
875 multiplier.high);
876 return fromBits(low, wasm["get_high"](), this.unsigned);
877 }
878
879 if (multiplier.isZero())
880 return ZERO;
881 if (this.eq(MIN_VALUE))
882 return multiplier.isOdd() ? MIN_VALUE : ZERO;
883 if (multiplier.eq(MIN_VALUE))
884 return this.isOdd() ? MIN_VALUE : ZERO;
885
886 if (this.isNegative()) {
887 if (multiplier.isNegative())
888 return this.neg().mul(multiplier.neg());
889 else
890 return this.neg().mul(multiplier).neg();
891 } else if (multiplier.isNegative())
892 return this.mul(multiplier.neg()).neg();
893
894 // If both longs are small, use float multiplication
895 if (this.lt(TWO_PWR_24) && multiplier.lt(TWO_PWR_24))
896 return fromNumber(this.toNumber() * multiplier.toNumber(), this.unsigned);
897
898 // Divide each long into 4 chunks of 16 bits, and then add up 4x4 products.
899 // We can skip products that would overflow.
900
901 var a48 = this.high >>> 16;
902 var a32 = this.high & 0xFFFF;
903 var a16 = this.low >>> 16;
904 var a00 = this.low & 0xFFFF;
905
906 var b48 = multiplier.high >>> 16;
907 var b32 = multiplier.high & 0xFFFF;
908 var b16 = multiplier.low >>> 16;
909 var b00 = multiplier.low & 0xFFFF;
910
911 var c48 = 0, c32 = 0, c16 = 0, c00 = 0;
912 c00 += a00 * b00;
913 c16 += c00 >>> 16;
914 c00 &= 0xFFFF;
915 c16 += a16 * b00;
916 c32 += c16 >>> 16;
917 c16 &= 0xFFFF;
918 c16 += a00 * b16;
919 c32 += c16 >>> 16;
920 c16 &= 0xFFFF;
921 c32 += a32 * b00;
922 c48 += c32 >>> 16;
923 c32 &= 0xFFFF;
924 c32 += a16 * b16;
925 c48 += c32 >>> 16;
926 c32 &= 0xFFFF;
927 c32 += a00 * b32;
928 c48 += c32 >>> 16;
929 c32 &= 0xFFFF;
930 c48 += a48 * b00 + a32 * b16 + a16 * b32 + a00 * b48;
931 c48 &= 0xFFFF;
932 return fromBits((c16 << 16) | c00, (c48 << 16) | c32, this.unsigned);
933};
934
935/**
936 * Returns the product of this and the specified Long. This is an alias of {@link Long#multiply}.
937 * @function
938 * @param {!Long|number|string} multiplier Multiplier
939 * @returns {!Long} Product
940 */
941LongPrototype.mul = LongPrototype.multiply;
942
943/**
944 * Returns this Long divided by the specified. The result is signed if this Long is signed or
945 * unsigned if this Long is unsigned.
946 * @this {!Long}
947 * @param {!Long|number|string} divisor Divisor
948 * @returns {!Long} Quotient
949 */
950LongPrototype.divide = function divide(divisor) {
951 if (!isLong(divisor))
952 divisor = fromValue(divisor);
953 if (divisor.isZero())
954 throw Error('division by zero');
955
956 // use wasm support if present
957 if (wasm) {
958 // guard against signed division overflow: the largest
959 // negative number / -1 would be 1 larger than the largest
960 // positive number, due to two's complement.
961 if (!this.unsigned &&
962 this.high === -0x80000000 &&
963 divisor.low === -1 && divisor.high === -1) {
964 // be consistent with non-wasm code path
965 return this;
966 }
967 var low = (this.unsigned ? wasm["div_u"] : wasm["div_s"])(
968 this.low,
969 this.high,
970 divisor.low,
971 divisor.high
972 );
973 return fromBits(low, wasm["get_high"](), this.unsigned);
974 }
975
976 if (this.isZero())
977 return this.unsigned ? UZERO : ZERO;
978 var approx, rem, res;
979 if (!this.unsigned) {
980 // This section is only relevant for signed longs and is derived from the
981 // closure library as a whole.
982 if (this.eq(MIN_VALUE)) {
983 if (divisor.eq(ONE) || divisor.eq(NEG_ONE))
984 return MIN_VALUE; // recall that -MIN_VALUE == MIN_VALUE
985 else if (divisor.eq(MIN_VALUE))
986 return ONE;
987 else {
988 // At this point, we have |other| >= 2, so |this/other| < |MIN_VALUE|.
989 var halfThis = this.shr(1);
990 approx = halfThis.div(divisor).shl(1);
991 if (approx.eq(ZERO)) {
992 return divisor.isNegative() ? ONE : NEG_ONE;
993 } else {
994 rem = this.sub(divisor.mul(approx));
995 res = approx.add(rem.div(divisor));
996 return res;
997 }
998 }
999 } else if (divisor.eq(MIN_VALUE))
1000 return this.unsigned ? UZERO : ZERO;
1001 if (this.isNegative()) {
1002 if (divisor.isNegative())
1003 return this.neg().div(divisor.neg());
1004 return this.neg().div(divisor).neg();
1005 } else if (divisor.isNegative())
1006 return this.div(divisor.neg()).neg();
1007 res = ZERO;
1008 } else {
1009 // The algorithm below has not been made for unsigned longs. It's therefore
1010 // required to take special care of the MSB prior to running it.
1011 if (!divisor.unsigned)
1012 divisor = divisor.toUnsigned();
1013 if (divisor.gt(this))
1014 return UZERO;
1015 if (divisor.gt(this.shru(1))) // 15 >>> 1 = 7 ; with divisor = 8 ; true
1016 return UONE;
1017 res = UZERO;
1018 }
1019
1020 // Repeat the following until the remainder is less than other: find a
1021 // floating-point that approximates remainder / other *from below*, add this
1022 // into the result, and subtract it from the remainder. It is critical that
1023 // the approximate value is less than or equal to the real value so that the
1024 // remainder never becomes negative.
1025 rem = this;
1026 while (rem.gte(divisor)) {
1027 // Approximate the result of division. This may be a little greater or
1028 // smaller than the actual value.
1029 approx = Math.max(1, Math.floor(rem.toNumber() / divisor.toNumber()));
1030
1031 // We will tweak the approximate result by changing it in the 48-th digit or
1032 // the smallest non-fractional digit, whichever is larger.
1033 var log2 = Math.ceil(Math.log(approx) / Math.LN2),
1034 delta = (log2 <= 48) ? 1 : pow_dbl(2, log2 - 48),
1035
1036 // Decrease the approximation until it is smaller than the remainder. Note
1037 // that if it is too large, the product overflows and is negative.
1038 approxRes = fromNumber(approx),
1039 approxRem = approxRes.mul(divisor);
1040 while (approxRem.isNegative() || approxRem.gt(rem)) {
1041 approx -= delta;
1042 approxRes = fromNumber(approx, this.unsigned);
1043 approxRem = approxRes.mul(divisor);
1044 }
1045
1046 // We know the answer can't be zero... and actually, zero would cause
1047 // infinite recursion since we would make no progress.
1048 if (approxRes.isZero())
1049 approxRes = ONE;
1050
1051 res = res.add(approxRes);
1052 rem = rem.sub(approxRem);
1053 }
1054 return res;
1055};
1056
1057/**
1058 * Returns this Long divided by the specified. This is an alias of {@link Long#divide}.
1059 * @function
1060 * @param {!Long|number|string} divisor Divisor
1061 * @returns {!Long} Quotient
1062 */
1063LongPrototype.div = LongPrototype.divide;
1064
1065/**
1066 * Returns this Long modulo the specified.
1067 * @this {!Long}
1068 * @param {!Long|number|string} divisor Divisor
1069 * @returns {!Long} Remainder
1070 */
1071LongPrototype.modulo = function modulo(divisor) {
1072 if (!isLong(divisor))
1073 divisor = fromValue(divisor);
1074
1075 // use wasm support if present
1076 if (wasm) {
1077 var low = (this.unsigned ? wasm["rem_u"] : wasm["rem_s"])(
1078 this.low,
1079 this.high,
1080 divisor.low,
1081 divisor.high
1082 );
1083 return fromBits(low, wasm["get_high"](), this.unsigned);
1084 }
1085
1086 return this.sub(this.div(divisor).mul(divisor));
1087};
1088
1089/**
1090 * Returns this Long modulo the specified. This is an alias of {@link Long#modulo}.
1091 * @function
1092 * @param {!Long|number|string} divisor Divisor
1093 * @returns {!Long} Remainder
1094 */
1095LongPrototype.mod = LongPrototype.modulo;
1096
1097/**
1098 * Returns this Long modulo the specified. This is an alias of {@link Long#modulo}.
1099 * @function
1100 * @param {!Long|number|string} divisor Divisor
1101 * @returns {!Long} Remainder
1102 */
1103LongPrototype.rem = LongPrototype.modulo;
1104
1105/**
1106 * Returns the bitwise NOT of this Long.
1107 * @this {!Long}
1108 * @returns {!Long}
1109 */
1110LongPrototype.not = function not() {
1111 return fromBits(~this.low, ~this.high, this.unsigned);
1112};
1113
1114/**
1115 * Returns the bitwise AND of this Long and the specified.
1116 * @this {!Long}
1117 * @param {!Long|number|string} other Other Long
1118 * @returns {!Long}
1119 */
1120LongPrototype.and = function and(other) {
1121 if (!isLong(other))
1122 other = fromValue(other);
1123 return fromBits(this.low & other.low, this.high & other.high, this.unsigned);
1124};
1125
1126/**
1127 * Returns the bitwise OR of this Long and the specified.
1128 * @this {!Long}
1129 * @param {!Long|number|string} other Other Long
1130 * @returns {!Long}
1131 */
1132LongPrototype.or = function or(other) {
1133 if (!isLong(other))
1134 other = fromValue(other);
1135 return fromBits(this.low | other.low, this.high | other.high, this.unsigned);
1136};
1137
1138/**
1139 * Returns the bitwise XOR of this Long and the given one.
1140 * @this {!Long}
1141 * @param {!Long|number|string} other Other Long
1142 * @returns {!Long}
1143 */
1144LongPrototype.xor = function xor(other) {
1145 if (!isLong(other))
1146 other = fromValue(other);
1147 return fromBits(this.low ^ other.low, this.high ^ other.high, this.unsigned);
1148};
1149
1150/**
1151 * Returns this Long with bits shifted to the left by the given amount.
1152 * @this {!Long}
1153 * @param {number|!Long} numBits Number of bits
1154 * @returns {!Long} Shifted Long
1155 */
1156LongPrototype.shiftLeft = function shiftLeft(numBits) {
1157 if (isLong(numBits))
1158 numBits = numBits.toInt();
1159 if ((numBits &= 63) === 0)
1160 return this;
1161 else if (numBits < 32)
1162 return fromBits(this.low << numBits, (this.high << numBits) | (this.low >>> (32 - numBits)), this.unsigned);
1163 else
1164 return fromBits(0, this.low << (numBits - 32), this.unsigned);
1165};
1166
1167/**
1168 * Returns this Long with bits shifted to the left by the given amount. This is an alias of {@link Long#shiftLeft}.
1169 * @function
1170 * @param {number|!Long} numBits Number of bits
1171 * @returns {!Long} Shifted Long
1172 */
1173LongPrototype.shl = LongPrototype.shiftLeft;
1174
1175/**
1176 * Returns this Long with bits arithmetically shifted to the right by the given amount.
1177 * @this {!Long}
1178 * @param {number|!Long} numBits Number of bits
1179 * @returns {!Long} Shifted Long
1180 */
1181LongPrototype.shiftRight = function shiftRight(numBits) {
1182 if (isLong(numBits))
1183 numBits = numBits.toInt();
1184 if ((numBits &= 63) === 0)
1185 return this;
1186 else if (numBits < 32)
1187 return fromBits((this.low >>> numBits) | (this.high << (32 - numBits)), this.high >> numBits, this.unsigned);
1188 else
1189 return fromBits(this.high >> (numBits - 32), this.high >= 0 ? 0 : -1, this.unsigned);
1190};
1191
1192/**
1193 * Returns this Long with bits arithmetically shifted to the right by the given amount. This is an alias of {@link Long#shiftRight}.
1194 * @function
1195 * @param {number|!Long} numBits Number of bits
1196 * @returns {!Long} Shifted Long
1197 */
1198LongPrototype.shr = LongPrototype.shiftRight;
1199
1200/**
1201 * Returns this Long with bits logically shifted to the right by the given amount.
1202 * @this {!Long}
1203 * @param {number|!Long} numBits Number of bits
1204 * @returns {!Long} Shifted Long
1205 */
1206LongPrototype.shiftRightUnsigned = function shiftRightUnsigned(numBits) {
1207 if (isLong(numBits)) numBits = numBits.toInt();
1208 if ((numBits &= 63) === 0) return this;
1209 if (numBits < 32) return fromBits((this.low >>> numBits) | (this.high << (32 - numBits)), this.high >>> numBits, this.unsigned);
1210 if (numBits === 32) return fromBits(this.high, 0, this.unsigned);
1211 return fromBits(this.high >>> (numBits - 32), 0, this.unsigned);
1212};
1213
1214/**
1215 * Returns this Long with bits logically shifted to the right by the given amount. This is an alias of {@link Long#shiftRightUnsigned}.
1216 * @function
1217 * @param {number|!Long} numBits Number of bits
1218 * @returns {!Long} Shifted Long
1219 */
1220LongPrototype.shru = LongPrototype.shiftRightUnsigned;
1221
1222/**
1223 * Returns this Long with bits logically shifted to the right by the given amount. This is an alias of {@link Long#shiftRightUnsigned}.
1224 * @function
1225 * @param {number|!Long} numBits Number of bits
1226 * @returns {!Long} Shifted Long
1227 */
1228LongPrototype.shr_u = LongPrototype.shiftRightUnsigned;
1229
1230/**
1231 * Returns this Long with bits rotated to the left by the given amount.
1232 * @this {!Long}
1233 * @param {number|!Long} numBits Number of bits
1234 * @returns {!Long} Rotated Long
1235 */
1236LongPrototype.rotateLeft = function rotateLeft(numBits) {
1237 var b;
1238 if (isLong(numBits)) numBits = numBits.toInt();
1239 if ((numBits &= 63) === 0) return this;
1240 if (numBits === 32) return fromBits(this.high, this.low, this.unsigned);
1241 if (numBits < 32) {
1242 b = (32 - numBits);
1243 return fromBits(((this.low << numBits) | (this.high >>> b)), ((this.high << numBits) | (this.low >>> b)), this.unsigned);
1244 }
1245 numBits -= 32;
1246 b = (32 - numBits);
1247 return fromBits(((this.high << numBits) | (this.low >>> b)), ((this.low << numBits) | (this.high >>> b)), this.unsigned);
1248}
1249/**
1250 * Returns this Long with bits rotated to the left by the given amount. This is an alias of {@link Long#rotateLeft}.
1251 * @function
1252 * @param {number|!Long} numBits Number of bits
1253 * @returns {!Long} Rotated Long
1254 */
1255LongPrototype.rotl = LongPrototype.rotateLeft;
1256
1257/**
1258 * Returns this Long with bits rotated to the right by the given amount.
1259 * @this {!Long}
1260 * @param {number|!Long} numBits Number of bits
1261 * @returns {!Long} Rotated Long
1262 */
1263LongPrototype.rotateRight = function rotateRight(numBits) {
1264 var b;
1265 if (isLong(numBits)) numBits = numBits.toInt();
1266 if ((numBits &= 63) === 0) return this;
1267 if (numBits === 32) return fromBits(this.high, this.low, this.unsigned);
1268 if (numBits < 32) {
1269 b = (32 - numBits);
1270 return fromBits(((this.high << b) | (this.low >>> numBits)), ((this.low << b) | (this.high >>> numBits)), this.unsigned);
1271 }
1272 numBits -= 32;
1273 b = (32 - numBits);
1274 return fromBits(((this.low << b) | (this.high >>> numBits)), ((this.high << b) | (this.low >>> numBits)), this.unsigned);
1275}
1276/**
1277 * Returns this Long with bits rotated to the right by the given amount. This is an alias of {@link Long#rotateRight}.
1278 * @function
1279 * @param {number|!Long} numBits Number of bits
1280 * @returns {!Long} Rotated Long
1281 */
1282LongPrototype.rotr = LongPrototype.rotateRight;
1283
1284/**
1285 * Converts this Long to signed.
1286 * @this {!Long}
1287 * @returns {!Long} Signed long
1288 */
1289LongPrototype.toSigned = function toSigned() {
1290 if (!this.unsigned)
1291 return this;
1292 return fromBits(this.low, this.high, false);
1293};
1294
1295/**
1296 * Converts this Long to unsigned.
1297 * @this {!Long}
1298 * @returns {!Long} Unsigned long
1299 */
1300LongPrototype.toUnsigned = function toUnsigned() {
1301 if (this.unsigned)
1302 return this;
1303 return fromBits(this.low, this.high, true);
1304};
1305
1306/**
1307 * Converts this Long to its byte representation.
1308 * @param {boolean=} le Whether little or big endian, defaults to big endian
1309 * @this {!Long}
1310 * @returns {!Array.<number>} Byte representation
1311 */
1312LongPrototype.toBytes = function toBytes(le) {
1313 return le ? this.toBytesLE() : this.toBytesBE();
1314};
1315
1316/**
1317 * Converts this Long to its little endian byte representation.
1318 * @this {!Long}
1319 * @returns {!Array.<number>} Little endian byte representation
1320 */
1321LongPrototype.toBytesLE = function toBytesLE() {
1322 var hi = this.high,
1323 lo = this.low;
1324 return [
1325 lo & 0xff,
1326 lo >>> 8 & 0xff,
1327 lo >>> 16 & 0xff,
1328 lo >>> 24 ,
1329 hi & 0xff,
1330 hi >>> 8 & 0xff,
1331 hi >>> 16 & 0xff,
1332 hi >>> 24
1333 ];
1334};
1335
1336/**
1337 * Converts this Long to its big endian byte representation.
1338 * @this {!Long}
1339 * @returns {!Array.<number>} Big endian byte representation
1340 */
1341LongPrototype.toBytesBE = function toBytesBE() {
1342 var hi = this.high,
1343 lo = this.low;
1344 return [
1345 hi >>> 24 ,
1346 hi >>> 16 & 0xff,
1347 hi >>> 8 & 0xff,
1348 hi & 0xff,
1349 lo >>> 24 ,
1350 lo >>> 16 & 0xff,
1351 lo >>> 8 & 0xff,
1352 lo & 0xff
1353 ];
1354};
1355
1356/**
1357 * Creates a Long from its byte representation.
1358 * @param {!Array.<number>} bytes Byte representation
1359 * @param {boolean=} unsigned Whether unsigned or not, defaults to signed
1360 * @param {boolean=} le Whether little or big endian, defaults to big endian
1361 * @returns {Long} The corresponding Long value
1362 */
1363Long.fromBytes = function fromBytes(bytes, unsigned, le) {
1364 return le ? Long.fromBytesLE(bytes, unsigned) : Long.fromBytesBE(bytes, unsigned);
1365};
1366
1367/**
1368 * Creates a Long from its little endian byte representation.
1369 * @param {!Array.<number>} bytes Little endian byte representation
1370 * @param {boolean=} unsigned Whether unsigned or not, defaults to signed
1371 * @returns {Long} The corresponding Long value
1372 */
1373Long.fromBytesLE = function fromBytesLE(bytes, unsigned) {
1374 return new Long(
1375 bytes[0] |
1376 bytes[1] << 8 |
1377 bytes[2] << 16 |
1378 bytes[3] << 24,
1379 bytes[4] |
1380 bytes[5] << 8 |
1381 bytes[6] << 16 |
1382 bytes[7] << 24,
1383 unsigned
1384 );
1385};
1386
1387/**
1388 * Creates a Long from its big endian byte representation.
1389 * @param {!Array.<number>} bytes Big endian byte representation
1390 * @param {boolean=} unsigned Whether unsigned or not, defaults to signed
1391 * @returns {Long} The corresponding Long value
1392 */
1393Long.fromBytesBE = function fromBytesBE(bytes, unsigned) {
1394 return new Long(
1395 bytes[4] << 24 |
1396 bytes[5] << 16 |
1397 bytes[6] << 8 |
1398 bytes[7],
1399 bytes[0] << 24 |
1400 bytes[1] << 16 |
1401 bytes[2] << 8 |
1402 bytes[3],
1403 unsigned
1404 );
1405};
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