1*7330f729Sjoerg /*===---- float.h - Characteristics of floating point types ----------------=== 2*7330f729Sjoerg * 3*7330f729Sjoerg * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*7330f729Sjoerg * See https://llvm.org/LICENSE.txt for license information. 5*7330f729Sjoerg * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*7330f729Sjoerg * 7*7330f729Sjoerg *===-----------------------------------------------------------------------=== 8*7330f729Sjoerg */ 9*7330f729Sjoerg 10*7330f729Sjoerg #ifndef __CLANG_FLOAT_H 11*7330f729Sjoerg #define __CLANG_FLOAT_H 12*7330f729Sjoerg 13*7330f729Sjoerg /* If we're on MinGW, fall back to the system's float.h, which might have 14*7330f729Sjoerg * additional definitions provided for Windows. 15*7330f729Sjoerg * For more details see http://msdn.microsoft.com/en-us/library/y0ybw9fy.aspx 16*7330f729Sjoerg * 17*7330f729Sjoerg * Also fall back on Darwin to allow additional definitions and 18*7330f729Sjoerg * implementation-defined values. 19*7330f729Sjoerg */ 20*7330f729Sjoerg #if (defined(__APPLE__) || (defined(__MINGW32__) || defined(_MSC_VER))) && \ 21*7330f729Sjoerg __STDC_HOSTED__ && __has_include_next(<float.h>) 22*7330f729Sjoerg 23*7330f729Sjoerg /* Prior to Apple's 10.7 SDK, float.h SDK header used to apply an extra level 24*7330f729Sjoerg * of #include_next<float.h> to keep Metrowerks compilers happy. Avoid this 25*7330f729Sjoerg * extra indirection. 26*7330f729Sjoerg */ 27*7330f729Sjoerg #ifdef __APPLE__ 28*7330f729Sjoerg #define _FLOAT_H_ 29*7330f729Sjoerg #endif 30*7330f729Sjoerg 31*7330f729Sjoerg # include_next <float.h> 32*7330f729Sjoerg 33*7330f729Sjoerg /* Undefine anything that we'll be redefining below. */ 34*7330f729Sjoerg # undef FLT_EVAL_METHOD 35*7330f729Sjoerg # undef FLT_ROUNDS 36*7330f729Sjoerg # undef FLT_RADIX 37*7330f729Sjoerg # undef FLT_MANT_DIG 38*7330f729Sjoerg # undef DBL_MANT_DIG 39*7330f729Sjoerg # undef LDBL_MANT_DIG 40*7330f729Sjoerg # if __STDC_VERSION__ >= 199901L || !defined(__STRICT_ANSI__) || __cplusplus >= 201103L 41*7330f729Sjoerg # undef DECIMAL_DIG 42*7330f729Sjoerg # endif 43*7330f729Sjoerg # undef FLT_DIG 44*7330f729Sjoerg # undef DBL_DIG 45*7330f729Sjoerg # undef LDBL_DIG 46*7330f729Sjoerg # undef FLT_MIN_EXP 47*7330f729Sjoerg # undef DBL_MIN_EXP 48*7330f729Sjoerg # undef LDBL_MIN_EXP 49*7330f729Sjoerg # undef FLT_MIN_10_EXP 50*7330f729Sjoerg # undef DBL_MIN_10_EXP 51*7330f729Sjoerg # undef LDBL_MIN_10_EXP 52*7330f729Sjoerg # undef FLT_MAX_EXP 53*7330f729Sjoerg # undef DBL_MAX_EXP 54*7330f729Sjoerg # undef LDBL_MAX_EXP 55*7330f729Sjoerg # undef FLT_MAX_10_EXP 56*7330f729Sjoerg # undef DBL_MAX_10_EXP 57*7330f729Sjoerg # undef LDBL_MAX_10_EXP 58*7330f729Sjoerg # undef FLT_MAX 59*7330f729Sjoerg # undef DBL_MAX 60*7330f729Sjoerg # undef LDBL_MAX 61*7330f729Sjoerg # undef FLT_EPSILON 62*7330f729Sjoerg # undef DBL_EPSILON 63*7330f729Sjoerg # undef LDBL_EPSILON 64*7330f729Sjoerg # undef FLT_MIN 65*7330f729Sjoerg # undef DBL_MIN 66*7330f729Sjoerg # undef LDBL_MIN 67*7330f729Sjoerg # if __STDC_VERSION__ >= 201112L || !defined(__STRICT_ANSI__) || __cplusplus >= 201703L 68*7330f729Sjoerg # undef FLT_TRUE_MIN 69*7330f729Sjoerg # undef DBL_TRUE_MIN 70*7330f729Sjoerg # undef LDBL_TRUE_MIN 71*7330f729Sjoerg # undef FLT_DECIMAL_DIG 72*7330f729Sjoerg # undef DBL_DECIMAL_DIG 73*7330f729Sjoerg # undef LDBL_DECIMAL_DIG 74*7330f729Sjoerg # undef FLT_HAS_SUBNORM 75*7330f729Sjoerg # undef DBL_HAS_SUBNORM 76*7330f729Sjoerg # undef LDBL_HAS_SUBNORM 77*7330f729Sjoerg # endif 78*7330f729Sjoerg #endif 79*7330f729Sjoerg 80*7330f729Sjoerg /* Characteristics of floating point types, C99 5.2.4.2.2 */ 81*7330f729Sjoerg 82*7330f729Sjoerg #define FLT_EVAL_METHOD __FLT_EVAL_METHOD__ 83*7330f729Sjoerg #define FLT_ROUNDS (__builtin_flt_rounds()) 84*7330f729Sjoerg #define FLT_RADIX __FLT_RADIX__ 85*7330f729Sjoerg 86*7330f729Sjoerg #define FLT_MANT_DIG __FLT_MANT_DIG__ 87*7330f729Sjoerg #define DBL_MANT_DIG __DBL_MANT_DIG__ 88*7330f729Sjoerg #define LDBL_MANT_DIG __LDBL_MANT_DIG__ 89*7330f729Sjoerg 90*7330f729Sjoerg #if __STDC_VERSION__ >= 199901L || !defined(__STRICT_ANSI__) || __cplusplus >= 201103L 91*7330f729Sjoerg # define DECIMAL_DIG __DECIMAL_DIG__ 92*7330f729Sjoerg #endif 93*7330f729Sjoerg 94*7330f729Sjoerg #define FLT_DIG __FLT_DIG__ 95*7330f729Sjoerg #define DBL_DIG __DBL_DIG__ 96*7330f729Sjoerg #define LDBL_DIG __LDBL_DIG__ 97*7330f729Sjoerg 98*7330f729Sjoerg #define FLT_MIN_EXP __FLT_MIN_EXP__ 99*7330f729Sjoerg #define DBL_MIN_EXP __DBL_MIN_EXP__ 100*7330f729Sjoerg #define LDBL_MIN_EXP __LDBL_MIN_EXP__ 101*7330f729Sjoerg 102*7330f729Sjoerg #define FLT_MIN_10_EXP __FLT_MIN_10_EXP__ 103*7330f729Sjoerg #define DBL_MIN_10_EXP __DBL_MIN_10_EXP__ 104*7330f729Sjoerg #define LDBL_MIN_10_EXP __LDBL_MIN_10_EXP__ 105*7330f729Sjoerg 106*7330f729Sjoerg #define FLT_MAX_EXP __FLT_MAX_EXP__ 107*7330f729Sjoerg #define DBL_MAX_EXP __DBL_MAX_EXP__ 108*7330f729Sjoerg #define LDBL_MAX_EXP __LDBL_MAX_EXP__ 109*7330f729Sjoerg 110*7330f729Sjoerg #define FLT_MAX_10_EXP __FLT_MAX_10_EXP__ 111*7330f729Sjoerg #define DBL_MAX_10_EXP __DBL_MAX_10_EXP__ 112*7330f729Sjoerg #define LDBL_MAX_10_EXP __LDBL_MAX_10_EXP__ 113*7330f729Sjoerg 114*7330f729Sjoerg #define FLT_MAX __FLT_MAX__ 115*7330f729Sjoerg #define DBL_MAX __DBL_MAX__ 116*7330f729Sjoerg #define LDBL_MAX __LDBL_MAX__ 117*7330f729Sjoerg 118*7330f729Sjoerg #define FLT_EPSILON __FLT_EPSILON__ 119*7330f729Sjoerg #define DBL_EPSILON __DBL_EPSILON__ 120*7330f729Sjoerg #define LDBL_EPSILON __LDBL_EPSILON__ 121*7330f729Sjoerg 122*7330f729Sjoerg #define FLT_MIN __FLT_MIN__ 123*7330f729Sjoerg #define DBL_MIN __DBL_MIN__ 124*7330f729Sjoerg #define LDBL_MIN __LDBL_MIN__ 125*7330f729Sjoerg 126*7330f729Sjoerg #if __STDC_VERSION__ >= 201112L || !defined(__STRICT_ANSI__) || __cplusplus >= 201703L 127*7330f729Sjoerg # define FLT_TRUE_MIN __FLT_DENORM_MIN__ 128*7330f729Sjoerg # define DBL_TRUE_MIN __DBL_DENORM_MIN__ 129*7330f729Sjoerg # define LDBL_TRUE_MIN __LDBL_DENORM_MIN__ 130*7330f729Sjoerg # define FLT_DECIMAL_DIG __FLT_DECIMAL_DIG__ 131*7330f729Sjoerg # define DBL_DECIMAL_DIG __DBL_DECIMAL_DIG__ 132*7330f729Sjoerg # define LDBL_DECIMAL_DIG __LDBL_DECIMAL_DIG__ 133*7330f729Sjoerg # define FLT_HAS_SUBNORM __FLT_HAS_DENORM__ 134*7330f729Sjoerg # define DBL_HAS_SUBNORM __DBL_HAS_DENORM__ 135*7330f729Sjoerg # define LDBL_HAS_SUBNORM __LDBL_HAS_DENORM__ 136*7330f729Sjoerg #endif 137*7330f729Sjoerg 138*7330f729Sjoerg #ifdef __STDC_WANT_IEC_60559_TYPES_EXT__ 139*7330f729Sjoerg # define FLT16_MANT_DIG __FLT16_MANT_DIG__ 140*7330f729Sjoerg # define FLT16_DECIMAL_DIG __FLT16_DECIMAL_DIG__ 141*7330f729Sjoerg # define FLT16_DIG __FLT16_DIG__ 142*7330f729Sjoerg # define FLT16_MIN_EXP __FLT16_MIN_EXP__ 143*7330f729Sjoerg # define FLT16_MIN_10_EXP __FLT16_MIN_10_EXP__ 144*7330f729Sjoerg # define FLT16_MAX_EXP __FLT16_MAX_EXP__ 145*7330f729Sjoerg # define FLT16_MAX_10_EXP __FLT16_MAX_10_EXP__ 146*7330f729Sjoerg # define FLT16_MAX __FLT16_MAX__ 147*7330f729Sjoerg # define FLT16_EPSILON __FLT16_EPSILON__ 148*7330f729Sjoerg # define FLT16_MIN __FLT16_MIN__ 149*7330f729Sjoerg # define FLT16_TRUE_MIN __FLT16_TRUE_MIN__ 150*7330f729Sjoerg #endif /* __STDC_WANT_IEC_60559_TYPES_EXT__ */ 151*7330f729Sjoerg 152*7330f729Sjoerg #endif /* __CLANG_FLOAT_H */ 153