projects / deliverable / titan.core.git / blame
| Commit | Line | Data |
|---|---|---|
| d44e3c4f | 1 | /****************************************************************************** |
| 2 | * Copyright (c) 2000-2016 Ericsson Telecom AB | |
| 3 | * All rights reserved. This program and the accompanying materials | |
| 4 | * are made available under the terms of the Eclipse Public License v1.0 | |
| 5 | * which accompanies this distribution, and is available at | |
| 6 | * http://www.eclipse.org/legal/epl-v10.html | |
| 7 | * | |
| 8 | * Contributors: | |
| 9 | * Balasko, Jeno | |
| 10 | * Bibo, Zoltan | |
| 11 | * Delic, Adam | |
| 12 | * Forstner, Matyas | |
| 13 | * Raduly, Csaba | |
| 14 | * Szabo, Janos Zoltan – initial implementation | |
| 15 | * | |
| 16 | ******************************************************************************/ | |
| 970ed795 EL |
17 | #ifndef _Common_Real_HH |
| 18 | #define _Common_Real_HH | |
| 19 | ||
| 20 | #include "string.hh" | |
| 21 | #include <math.h> | |
| 22 | ||
| 23 | // older versions of gcc do not have numeric_limits<double> or it is wrong | |
| 24 | // and they do not have constants defined by C99 standard | |
| 25 | #ifdef INFINITY | |
| 26 | static const double REAL_INFINITY = INFINITY; | |
| 27 | #else | |
| 28 | #include <float.h> | |
| 29 | static const double REAL_INFINITY = (DBL_MAX*DBL_MAX); | |
| 30 | #endif | |
| 31 | ||
| 32 | #ifdef NAN | |
| 33 | static const double REAL_NAN = NAN; | |
| 34 | #else | |
| 35 | static const double REAL_NAN = (REAL_INFINITY-REAL_INFINITY); | |
| 36 | #endif | |
| 37 | ||
| 38 | namespace Common { | |
| 39 | ||
| 40 | class Location; | |
| 41 | ||
| 42 | /** | |
| 43 | * \defgroup Real Real type and related functions | |
| 44 | * | |
| 45 | * Real type is used to represent those real/float values which will | |
| 46 | * be used in TITAN run-time environment, in the compiler. | |
| 47 | * | |
| 48 | * @{ | |
| 49 | */ | |
| 50 | ||
| 51 | /** Real typedef */ | |
| 52 | ||
| 53 | typedef double Real; | |
| 54 | ||
| 55 | /** +/- infinity and not_a_number are non-numeric float values in ttcn-3, | |
| 56 | these special values cannot be used in some places */ | |
| 57 | bool isSpecialFloatValue(const Real& r); | |
| 58 | ||
| 59 | /** | |
| 60 | * Converts the Common::Real value to string. | |
| 61 | * | |
| 62 | * The returned string looks like this: | |
| 63 | * | |
| 64 | * <pre> | |
| 65 | ( | |
| 66 | ( | |
| 67 | ([\-][1-9]\.(([0-9]+[1-9])|0)) | |
| 68 | | | |
| 69 | ([\-]0\.([0-9]+[1-9])) | |
| 70 | ) | |
| 71 | "e" | |
| 72 | (([\-][1-9][0-9]*)|0) | |
| 73 | ) | |
| 74 | | | |
| 75 | (0\.0e0) | |
| 76 | | | |
| 77 | "INF" | |
| 78 | | | |
| 79 | "-INF" | |
| 80 | * </pre> | |
| 81 | */ | |
| 82 | string Real2string(const Real& r); | |
| 83 | ||
| 84 | /** Returns the C++ equivalent of value r */ | |
| 85 | string Real2code(const Real& r); | |
| 86 | ||
| 87 | /** | |
| 88 | * Converts the string value to Common::Real. | |
| 89 | */ | |
| 90 | Real string2Real(const char *s, const Location& loc); | |
| 91 | inline Real string2Real(const string& s, const Location& loc) | |
| 92 | { return string2Real(s.c_str(), loc); } | |
| 93 | /** @} end of Real group */ | |
| 94 | ||
| 95 | } // namespace Common | |
| 96 | ||
| 97 | #endif // _Common_Real_HH |