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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 /** | 5 /** |
6 * Mathematical constants and functions, plus a random number generator. | 6 * Mathematical constants and functions, plus a random number generator. |
7 * | 7 * |
8 * To use this library in your code: | 8 * To use this library in your code: |
9 * | 9 * |
10 * import 'dart:math'; | 10 * import 'dart:math'; |
11 */ | 11 */ |
12 library dart.math; | 12 library dart.math; |
13 | 13 |
14 part "jenkins_smi_hash.dart"; | 14 part "jenkins_smi_hash.dart"; |
15 part "point.dart"; | 15 part "point.dart"; |
16 part "random.dart"; | 16 part "random.dart"; |
17 part "rectangle.dart"; | 17 part "rectangle.dart"; |
18 | 18 |
19 /** | 19 /** |
20 * Base of the natural logarithms. | 20 * Base of the natural logarithms. |
21 * | 21 * |
22 * Typically written as "e". | 22 * Typically written as "e". |
23 */ | 23 */ |
24 const double E = 2.718281828459045; | 24 const double E = 2.718281828459045; |
25 | 25 |
26 /** | 26 /** |
27 * Natural logarithm of 10. | 27 * Natural logarithm of 10. |
28 */ | 28 */ |
29 const double LN10 = 2.302585092994046; | 29 const double LN10 = 2.302585092994046; |
30 | 30 |
31 /** | 31 /** |
32 * Natural logarithm of 2. | 32 * Natural logarithm of 2. |
33 */ | 33 */ |
34 const double LN2 = 0.6931471805599453; | 34 const double LN2 = 0.6931471805599453; |
35 | 35 |
36 /** | 36 /** |
37 * Base-2 logarithm of [E]. | 37 * Base-2 logarithm of [E]. |
38 */ | 38 */ |
39 const double LOG2E = 1.4426950408889634; | 39 const double LOG2E = 1.4426950408889634; |
40 | 40 |
41 /** | 41 /** |
42 * Base-10 logarithm of [E]. | 42 * Base-10 logarithm of [E]. |
43 */ | 43 */ |
44 const double LOG10E = 0.4342944819032518; | 44 const double LOG10E = 0.4342944819032518; |
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252 */ | 252 */ |
253 external double exp(num x); | 253 external double exp(num x); |
254 | 254 |
255 /** | 255 /** |
256 * Converts [x] to a double and returns the natural logarithm of the value. | 256 * Converts [x] to a double and returns the natural logarithm of the value. |
257 * | 257 * |
258 * Returns negative infinity if [x] is equal to zero. | 258 * Returns negative infinity if [x] is equal to zero. |
259 * Returns NaN if [x] is NaN or less than zero. | 259 * Returns NaN if [x] is NaN or less than zero. |
260 */ | 260 */ |
261 external double log(num x); | 261 external double log(num x); |
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