1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /* ***** BEGIN LICENSE BLOCK *****
3 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
4 : *
5 : * The contents of this file are subject to the Mozilla Public License Version
6 : * 1.1 (the "License"); you may not use this file except in compliance with
7 : * the License. You may obtain a copy of the License at
8 : * http://www.mozilla.org/MPL/
9 : *
10 : * Software distributed under the License is distributed on an "AS IS" basis,
11 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 : * for the specific language governing rights and limitations under the
13 : * License.
14 : *
15 : * The Original Code is TransforMiiX XSLT processor code.
16 : *
17 : * The Initial Developer of the Original Code is
18 : * The MITRE Corporation.
19 : * Portions created by the Initial Developer are Copyright (C) 1999
20 : * the Initial Developer. All Rights Reserved.
21 : *
22 : * Contributor(s):
23 : * Keith Visco <kvisco@ziplink.net> (Original Author)
24 : *
25 : * Alternatively, the contents of this file may be used under the terms of
26 : * either the GNU General Public License Version 2 or later (the "GPL"), or
27 : * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
28 : * in which case the provisions of the GPL or the LGPL are applicable instead
29 : * of those above. If you wish to allow use of your version of this file only
30 : * under the terms of either the GPL or the LGPL, and not to allow others to
31 : * use your version of this file under the terms of the MPL, indicate your
32 : * decision by deleting the provisions above and replace them with the notice
33 : * and other provisions required by the GPL or the LGPL. If you do not delete
34 : * the provisions above, a recipient may use your version of this file under
35 : * the terms of any one of the MPL, the GPL or the LGPL.
36 : *
37 : * ***** END LICENSE BLOCK ***** */
38 :
39 : #ifndef __txCore_h__
40 : #define __txCore_h__
41 :
42 : #include "nsContentUtils.h"
43 : #include "nscore.h"
44 : #include "nsDebug.h"
45 : #include "nsTraceRefcnt.h"
46 : #include "prtypes.h"
47 :
48 : class nsAString;
49 :
50 : class txObject
51 : {
52 : public:
53 0 : txObject()
54 0 : {
55 0 : MOZ_COUNT_CTOR(txObject);
56 0 : }
57 :
58 : /**
59 : * Deletes this txObject
60 : */
61 0 : virtual ~txObject()
62 0 : {
63 0 : MOZ_COUNT_DTOR(txObject);
64 0 : }
65 : };
66 :
67 : /**
68 : * Utility class for doubles
69 : */
70 : class txDouble
71 : {
72 : public:
73 : /**
74 : * Useful constants
75 : */
76 : static const dpun NaN;
77 : static const dpun POSITIVE_INFINITY;
78 : static const dpun NEGATIVE_INFINITY;
79 :
80 : /**
81 : * Determines whether the given double represents positive or negative
82 : * inifinity.
83 : */
84 : static bool isInfinite(double aDbl);
85 :
86 : /**
87 : * Determines whether the given double is NaN.
88 : */
89 : static bool isNaN(double aDbl);
90 :
91 : /**
92 : * Determines whether the given double is negative.
93 : */
94 : static bool isNeg(double aDbl);
95 :
96 : /**
97 : * Converts the value of the given double to a string, and appends
98 : * the result to the destination string.
99 : */
100 : static void toString(double aValue, nsAString& aDest);
101 :
102 : /**
103 : * Converts the given String to a double, if the string value does not
104 : * represent a double, NaN will be returned.
105 : */
106 : static double toDouble(const nsAString& aStr);
107 : };
108 :
109 : #endif
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