1 limits.h |
1 /* |
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2 * Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.symbianfoundation.org/legal/licencesv10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: |
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15 * |
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16 */ |
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17 |
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18 |
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19 |
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20 |
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21 |
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22 |
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23 /** |
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24 @file |
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25 @publishedAll |
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26 @released |
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27 */ |
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28 |
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29 #ifndef _LIMITS_H_ |
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30 #define _LIMITS_H_ |
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31 /** |
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32 Number of bits in a `char'. |
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33 */ |
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34 #define CHAR_BIT 8 |
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35 |
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36 /** |
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37 Maximum length of any multibyte character in any locale. |
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38 Locale-writers should change this as necessary. |
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39 */ |
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40 #define MB_LEN_MAX 2 |
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41 |
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42 /** |
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43 Minimum and maximum values a `signed char' can hold. |
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44 */ |
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45 #define SCHAR_MIN (-128) |
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46 #define SCHAR_MAX 127 |
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47 |
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48 /** |
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49 Maximum value an `unsigned char' can hold. (Minimum is 0.) |
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50 */ |
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51 #define UCHAR_MAX 255U |
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52 |
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53 /** |
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54 Minimum and maximum values a `char' can hold. |
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55 The sign of "char" is probably dictated by a command-line switch to |
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56 your compiler. |
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57 MSVC will define _CHAR_UNSIGNED if the /J option is used. |
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58 GCC uses --unsigned-char (and friends) to override the default for |
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59 the target processor and defines a symbol __CHAR_UNSIGNED__ |
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60 if appropriate. |
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61 */ |
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62 #if defined(__CHAR_UNSIGNED__) || defined(_CHAR_UNSIGNED) || ( defined (__ARMCC__) && !( __FEATURE_SIGNED_CHAR) ) |
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63 #define CHAR_MIN 0 |
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64 #define CHAR_MAX UCHAR_MAX |
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65 #else |
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66 #define CHAR_MIN SCHAR_MIN |
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67 #define CHAR_MAX SCHAR_MAX |
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68 #endif |
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69 |
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70 /** |
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71 Minimum and maximum values a `signed short int' can hold. |
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72 */ |
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73 #define SHRT_MIN (-32768) |
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74 #define SHRT_MAX 32767 |
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75 |
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76 /** |
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77 Maximum value an `unsigned short int' can hold. (Minimum is 0.) |
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78 */ |
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79 #define USHRT_MAX 65535 |
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80 |
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81 /** |
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82 Minimum and maximum values a `signed int' can hold. |
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83 */ |
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84 #define INT_MIN (- INT_MAX - 1) |
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85 #define INT_MAX 2147483647 |
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86 |
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87 /** |
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88 Maximum value an `unsigned int' can hold. (Minimum is 0.) |
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89 */ |
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90 #define UINT_MAX 4294967295U |
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91 |
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92 /** |
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93 Minimum and maximum values a `signed long int' can hold. |
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94 */ |
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95 #define LONG_MIN INT_MIN |
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96 #define LONG_MAX INT_MAX |
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97 |
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98 /** |
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99 Maximum value an `unsigned long int' can hold. (Minimum is 0.) |
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100 */ |
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101 #define ULONG_MAX UINT_MAX |
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102 |
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103 #endif /* limits.h */ |