1// -*- C++ -*-
2//===--------------------- support/ibm/limits.h ---------------------------===//
3//
4//                     The LLVM Compiler Infrastructure
5//
6// This file is dual licensed under the MIT and the University of Illinois Open
7// Source Licenses. See LICENSE.TXT for details.
8//
9//===----------------------------------------------------------------------===//
10
11#ifndef _LIBCPP_SUPPORT_IBM_LIMITS_H
12#define _LIBCPP_SUPPORT_IBM_LIMITS_H
13
14#if !defined(_AIX) // Linux
15#include <math.h> // for HUGE_VAL, HUGE_VALF, HUGE_VALL, and NAN
16
17static const unsigned int _QNAN_F = 0x7fc00000;
18#define NANF (*((float *)(&_QNAN_F)))
19static const unsigned int _QNAN_LDBL128[4] = {0x7ff80000, 0x0, 0x0, 0x0};
20#define NANL (*((long double *)(&_QNAN_LDBL128)))
21static const unsigned int _SNAN_F= 0x7f855555;
22#define NANSF (*((float *)(&_SNAN_F)))
23static const unsigned int _SNAN_D[2] = {0x7ff55555, 0x55555555};
24#define NANS (*((double *)(&_SNAN_D)))
25static const unsigned int _SNAN_LDBL128[4] = {0x7ff55555, 0x55555555, 0x0, 0x0};
26#define NANSL (*((long double *)(&_SNAN_LDBL128)))
27
28#define __builtin_huge_val()     HUGE_VAL
29#define __builtin_huge_valf()    HUGE_VALF
30#define __builtin_huge_vall()    HUGE_VALL
31#define __builtin_nan(__dummy)   NAN
32#define __builtin_nanf(__dummy)  NANF
33#define __builtin_nanl(__dummy)  NANL
34#define __builtin_nans(__dummy)  NANS
35#define __builtin_nansf(__dummy) NANSF
36#define __builtin_nansl(__dummy) NANSL
37
38#else
39
40#include <math.h>
41#include <float.h> // limit constants
42
43#define __builtin_huge_val()     HUGE_VAL  //0x7ff0000000000000
44#define __builtin_huge_valf()    HUGE_VALF //0x7f800000
45#define __builtin_huge_vall()    HUGE_VALL //0x7ff0000000000000
46#define __builtin_nan(__dummy)   nan(__dummy) //0x7ff8000000000000
47#define __builtin_nanf(__dummy)  nanf(__dummy) // 0x7ff80000
48#define __builtin_nanl(__dummy)  nanl(__dummy) //0x7ff8000000000000
49#define __builtin_nans(__dummy)  DBL_SNAN //0x7ff5555555555555
50#define __builtin_nansf(__dummy) FLT_SNAN //0x7f855555
51#define __builtin_nansl(__dummy) DBL_SNAN //0x7ff5555555555555
52
53#define __FLT_MANT_DIG__   FLT_MANT_DIG
54#define __FLT_DIG__        FLT_DIG
55#define __FLT_RADIX__      FLT_RADIX
56#define __FLT_MIN_EXP__    FLT_MIN_EXP
57#define __FLT_MIN_10_EXP__ FLT_MIN_10_EXP
58#define __FLT_MAX_EXP__    FLT_MAX_EXP
59#define __FLT_MAX_10_EXP__ FLT_MAX_10_EXP
60#define __FLT_MIN__        FLT_MIN
61#define __FLT_MAX__        FLT_MAX
62#define __FLT_EPSILON__    FLT_EPSILON
63// predefined by XLC on LoP
64#define __FLT_DENORM_MIN__ 1.40129846e-45F
65
66#define __DBL_MANT_DIG__   DBL_MANT_DIG
67#define __DBL_DIG__        DBL_DIG
68#define __DBL_MIN_EXP__    DBL_MIN_EXP
69#define __DBL_MIN_10_EXP__ DBL_MIN_10_EXP
70#define __DBL_MAX_EXP__    DBL_MAX_EXP
71#define __DBL_MAX_10_EXP__ DBL_MAX_10_EXP
72#define __DBL_MIN__        DBL_MIN
73#define __DBL_MAX__        DBL_MAX
74#define __DBL_EPSILON__    DBL_EPSILON
75// predefined by XLC on LoP
76#define __DBL_DENORM_MIN__ 4.9406564584124654e-324
77
78#define __LDBL_MANT_DIG__   LDBL_MANT_DIG
79#define __LDBL_DIG__        LDBL_DIG
80#define __LDBL_MIN_EXP__    LDBL_MIN_EXP
81#define __LDBL_MIN_10_EXP__ LDBL_MIN_10_EXP
82#define __LDBL_MAX_EXP__    LDBL_MAX_EXP
83#define __LDBL_MAX_10_EXP__ LDBL_MAX_10_EXP
84#define __LDBL_MIN__        LDBL_MIN
85#define __LDBL_MAX__        LDBL_MAX
86#define __LDBL_EPSILON__    LDBL_EPSILON
87// predefined by XLC on LoP
88#if __LONGDOUBLE128
89#define __LDBL_DENORM_MIN__ 4.94065645841246544176568792868221e-324L
90#else
91#define __LDBL_DENORM_MIN__ 4.9406564584124654e-324L
92#endif
93
94// predefined by XLC on LoP
95#define __CHAR_BIT__    8
96
97#endif // _AIX
98
99#endif // _LIBCPP_SUPPORT_IBM_LIMITS_H
100