clang API Documentation
00001 /*===---- float.h - Characteristics of floating point types ----------------=== 00002 * 00003 * Permission is hereby granted, free of charge, to any person obtaining a copy 00004 * of this software and associated documentation files (the "Software"), to deal 00005 * in the Software without restriction, including without limitation the rights 00006 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 00007 * copies of the Software, and to permit persons to whom the Software is 00008 * furnished to do so, subject to the following conditions: 00009 * 00010 * The above copyright notice and this permission notice shall be included in 00011 * all copies or substantial portions of the Software. 00012 * 00013 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 00014 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 00015 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 00016 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 00017 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 00018 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 00019 * THE SOFTWARE. 00020 * 00021 *===-----------------------------------------------------------------------=== 00022 */ 00023 00024 #ifndef __FLOAT_H 00025 #define __FLOAT_H 00026 00027 /* If we're on MinGW, fall back to the system's float.h, which might have 00028 * additional definitions provided for Windows. 00029 * For more details see http://msdn.microsoft.com/en-us/library/y0ybw9fy.aspx 00030 */ 00031 #if (defined(__MINGW32__) || defined(_MSC_VER)) && __STDC_HOSTED__ && \ 00032 __has_include_next(<float.h>) 00033 # include_next <float.h> 00034 00035 /* Undefine anything that we'll be redefining below. */ 00036 # undef FLT_EVAL_METHOD 00037 # undef FLT_ROUNDS 00038 # undef FLT_RADIX 00039 # undef FLT_MANT_DIG 00040 # undef DBL_MANT_DIG 00041 # undef LDBL_MANT_DIG 00042 # undef DECIMAL_DIG 00043 # undef FLT_DIG 00044 # undef DBL_DIG 00045 # undef LDBL_DIG 00046 # undef FLT_MIN_EXP 00047 # undef DBL_MIN_EXP 00048 # undef LDBL_MIN_EXP 00049 # undef FLT_MIN_10_EXP 00050 # undef DBL_MIN_10_EXP 00051 # undef LDBL_MIN_10_EXP 00052 # undef FLT_MAX_EXP 00053 # undef DBL_MAX_EXP 00054 # undef LDBL_MAX_EXP 00055 # undef FLT_MAX_10_EXP 00056 # undef DBL_MAX_10_EXP 00057 # undef LDBL_MAX_10_EXP 00058 # undef FLT_MAX 00059 # undef DBL_MAX 00060 # undef LDBL_MAX 00061 # undef FLT_EPSILON 00062 # undef DBL_EPSILON 00063 # undef LDBL_EPSILON 00064 # undef FLT_MIN 00065 # undef DBL_MIN 00066 # undef LDBL_MIN 00067 # if __STDC_VERSION__ >= 201112L || !defined(__STRICT_ANSI__) 00068 # undef FLT_TRUE_MIN 00069 # undef DBL_TRUE_MIN 00070 # undef LDBL_TRUE_MIN 00071 # endif 00072 #endif 00073 00074 /* Characteristics of floating point types, C99 5.2.4.2.2 */ 00075 00076 #define FLT_EVAL_METHOD __FLT_EVAL_METHOD__ 00077 #define FLT_ROUNDS (__builtin_flt_rounds()) 00078 #define FLT_RADIX __FLT_RADIX__ 00079 00080 #define FLT_MANT_DIG __FLT_MANT_DIG__ 00081 #define DBL_MANT_DIG __DBL_MANT_DIG__ 00082 #define LDBL_MANT_DIG __LDBL_MANT_DIG__ 00083 00084 #define DECIMAL_DIG __DECIMAL_DIG__ 00085 00086 #define FLT_DIG __FLT_DIG__ 00087 #define DBL_DIG __DBL_DIG__ 00088 #define LDBL_DIG __LDBL_DIG__ 00089 00090 #define FLT_MIN_EXP __FLT_MIN_EXP__ 00091 #define DBL_MIN_EXP __DBL_MIN_EXP__ 00092 #define LDBL_MIN_EXP __LDBL_MIN_EXP__ 00093 00094 #define FLT_MIN_10_EXP __FLT_MIN_10_EXP__ 00095 #define DBL_MIN_10_EXP __DBL_MIN_10_EXP__ 00096 #define LDBL_MIN_10_EXP __LDBL_MIN_10_EXP__ 00097 00098 #define FLT_MAX_EXP __FLT_MAX_EXP__ 00099 #define DBL_MAX_EXP __DBL_MAX_EXP__ 00100 #define LDBL_MAX_EXP __LDBL_MAX_EXP__ 00101 00102 #define FLT_MAX_10_EXP __FLT_MAX_10_EXP__ 00103 #define DBL_MAX_10_EXP __DBL_MAX_10_EXP__ 00104 #define LDBL_MAX_10_EXP __LDBL_MAX_10_EXP__ 00105 00106 #define FLT_MAX __FLT_MAX__ 00107 #define DBL_MAX __DBL_MAX__ 00108 #define LDBL_MAX __LDBL_MAX__ 00109 00110 #define FLT_EPSILON __FLT_EPSILON__ 00111 #define DBL_EPSILON __DBL_EPSILON__ 00112 #define LDBL_EPSILON __LDBL_EPSILON__ 00113 00114 #define FLT_MIN __FLT_MIN__ 00115 #define DBL_MIN __DBL_MIN__ 00116 #define LDBL_MIN __LDBL_MIN__ 00117 00118 #if __STDC_VERSION__ >= 201112L || !defined(__STRICT_ANSI__) 00119 # define FLT_TRUE_MIN __FLT_DENORM_MIN__ 00120 # define DBL_TRUE_MIN __DBL_DENORM_MIN__ 00121 # define LDBL_TRUE_MIN __LDBL_DENORM_MIN__ 00122 #endif 00123 00124 #endif /* __FLOAT_H */