-
-
Notifications
You must be signed in to change notification settings - Fork 400
/
index.d.ts
106 lines (98 loc) · 2.24 KB
/
index.d.ts
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
/*
* @license Apache-2.0
*
* Copyright (c) 2019 The Stdlib Authors.
*
* Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// TypeScript Version: 2.0
/**
* Evaluates the moment-generating function (MGF) of a chi-squared distribution.
*
* @param t - input value
* @returns evaluated MGF
*/
type Unary = ( t: number ) => number;
/**
* Interface for the moment-generating function (MGF) of a chi-squared distribution.
*/
interface MGF {
/**
* Evaluates the moment-generating function (MGF) for a chi-squared distribution with degrees of freedom `k` at a value `t`.
*
* ## Notes
*
* - If provided `k < 0`, the function returns `NaN`.
*
* @param t - input value
* @param k - degrees of freedom
* @returns evaluated MGF
*
* @example
* var y = mgf( 0.4, 2 );
* // returns ~5.0
*
* @example
* var y = mgf( -1.0, 5.0 );
* // returns ~0.0642
*
* @example
* var y = mgf( 0.0, 10.0 );
* // returns 1.0
*/
( t: number, k: number ): number;
/**
* Returns a function for evaluating the moment-generating function (MGF) of a chi-squared distribution with degrees of freedom `k`.
*
* @param k - degrees of freedom
* @returns MGF
*
* @example
* var mymgf = mgf.factory( 1.0 );
*
* var y = mymgf( 0.2 );
* // returns ~1.291
*
* y = mymgf( 0.4 );
* // returns ~2.236
*/
factory( k: number ): Unary;
}
/**
* Chi-squared distribution moment-generating function (MGF).
*
* @param t - input value
* @param k - degrees of freedom
* @returns evaluated MGF
*
* @example
* var y = mgf( 0.4, 2 );
* // returns ~5.0
*
* y = mgf( -1.0, 5.0 );
* // returns ~0.0642
*
* y = mgf( 0.0, 10.0 );
* // returns 1.0
*
* var mymgf = mgf.factory( 1.0 );
*
* var y = mymgf( 0.2 );
* // returns ~1.291
*
* y = mymgf( 0.4 );
* // returns ~2.236
*/
declare var mgf: MGF;
// EXPORTS //
export = mgf;