1 // -*- C++ -*- 2 //===--------------------- support/ibm/limits.h ---------------------------===// 3 // 4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5 // See https://llvm.org/LICENSE.txt for license information. 6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7 // 8 //===----------------------------------------------------------------------===// 9 10 #ifndef _LIBCPP_SUPPORT_IBM_LIMITS_H 11 #define _LIBCPP_SUPPORT_IBM_LIMITS_H 12 13 #if !defined(_AIX) // Linux 14 #include <math.h> // for HUGE_VAL, HUGE_VALF, HUGE_VALL, and NAN 15 16 static const unsigned int _QNAN_F = 0x7fc00000; 17 #define NANF (*((float *)(&_QNAN_F))) 18 static const unsigned int _QNAN_LDBL128[4] = {0x7ff80000, 0x0, 0x0, 0x0}; 19 #define NANL (*((long double *)(&_QNAN_LDBL128))) 20 static const unsigned int _SNAN_F= 0x7f855555; 21 #define NANSF (*((float *)(&_SNAN_F))) 22 static const unsigned int _SNAN_D[2] = {0x7ff55555, 0x55555555}; 23 #define NANS (*((double *)(&_SNAN_D))) 24 static const unsigned int _SNAN_LDBL128[4] = {0x7ff55555, 0x55555555, 0x0, 0x0}; 25 #define NANSL (*((long double *)(&_SNAN_LDBL128))) 26 27 #define __builtin_huge_val() HUGE_VAL 28 #define __builtin_huge_valf() HUGE_VALF 29 #define __builtin_huge_vall() HUGE_VALL 30 #define __builtin_nan(__dummy) NAN 31 #define __builtin_nanf(__dummy) NANF 32 #define __builtin_nanl(__dummy) NANL 33 #define __builtin_nans(__dummy) NANS 34 #define __builtin_nansf(__dummy) NANSF 35 #define __builtin_nansl(__dummy) NANSL 36 37 #else 38 39 #include <math.h> 40 #include <float.h> // limit constants 41 42 #define __builtin_huge_val() HUGE_VAL //0x7ff0000000000000 43 #define __builtin_huge_valf() HUGE_VALF //0x7f800000 44 #define __builtin_huge_vall() HUGE_VALL //0x7ff0000000000000 45 #define __builtin_nan(__dummy) nan(__dummy) //0x7ff8000000000000 46 #define __builtin_nanf(__dummy) nanf(__dummy) // 0x7ff80000 47 #define __builtin_nanl(__dummy) nanl(__dummy) //0x7ff8000000000000 48 #define __builtin_nans(__dummy) DBL_SNAN //0x7ff5555555555555 49 #define __builtin_nansf(__dummy) FLT_SNAN //0x7f855555 50 #define __builtin_nansl(__dummy) DBL_SNAN //0x7ff5555555555555 51 52 #define __FLT_MANT_DIG__ FLT_MANT_DIG 53 #define __FLT_DIG__ FLT_DIG 54 #define __FLT_RADIX__ FLT_RADIX 55 #define __FLT_MIN_EXP__ FLT_MIN_EXP 56 #define __FLT_MIN_10_EXP__ FLT_MIN_10_EXP 57 #define __FLT_MAX_EXP__ FLT_MAX_EXP 58 #define __FLT_MAX_10_EXP__ FLT_MAX_10_EXP 59 #define __FLT_MIN__ FLT_MIN 60 #define __FLT_MAX__ FLT_MAX 61 #define __FLT_EPSILON__ FLT_EPSILON 62 // predefined by XLC on LoP 63 #define __FLT_DENORM_MIN__ 1.40129846e-45F 64 65 #define __DBL_MANT_DIG__ DBL_MANT_DIG 66 #define __DBL_DIG__ DBL_DIG 67 #define __DBL_MIN_EXP__ DBL_MIN_EXP 68 #define __DBL_MIN_10_EXP__ DBL_MIN_10_EXP 69 #define __DBL_MAX_EXP__ DBL_MAX_EXP 70 #define __DBL_MAX_10_EXP__ DBL_MAX_10_EXP 71 #define __DBL_MIN__ DBL_MIN 72 #define __DBL_MAX__ DBL_MAX 73 #define __DBL_EPSILON__ DBL_EPSILON 74 // predefined by XLC on LoP 75 #define __DBL_DENORM_MIN__ 4.9406564584124654e-324 76 77 #define __LDBL_MANT_DIG__ LDBL_MANT_DIG 78 #define __LDBL_DIG__ LDBL_DIG 79 #define __LDBL_MIN_EXP__ LDBL_MIN_EXP 80 #define __LDBL_MIN_10_EXP__ LDBL_MIN_10_EXP 81 #define __LDBL_MAX_EXP__ LDBL_MAX_EXP 82 #define __LDBL_MAX_10_EXP__ LDBL_MAX_10_EXP 83 #define __LDBL_MIN__ LDBL_MIN 84 #define __LDBL_MAX__ LDBL_MAX 85 #define __LDBL_EPSILON__ LDBL_EPSILON 86 // predefined by XLC on LoP 87 #if __LONGDOUBLE128 88 #define __LDBL_DENORM_MIN__ 4.94065645841246544176568792868221e-324L 89 #else 90 #define __LDBL_DENORM_MIN__ 4.9406564584124654e-324L 91 #endif 92 93 // predefined by XLC on LoP 94 #define __CHAR_BIT__ 8 95 96 #endif // _AIX 97 98 #endif // _LIBCPP_SUPPORT_IBM_LIMITS_H 99