1#ifndef _LIBC_FLOAT_H
2#define _LIBC_FLOAT_H
3
4#define __GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION
5#include <bits/libc-header-start.h>
6
7/* Some tests also define this macro, requiring a check here to avoid
8 errors for duplicate definitions (see GCC bug 91451). */
9#if !defined _ISOMAC && !defined __STDC_WANT_IEC_60559_TYPES_EXT__
10# define __STDC_WANT_IEC_60559_TYPES_EXT__
11#endif
12
13#include_next <float.h>
14
15/* Supplement float.h macros for _FloatN and _FloatNx for older
16 compilers which do not yet support the type. These are described
17 in TS 18661-3. */
18#include <features.h>
19#include <bits/floatn.h>
20#if !__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
21
22# if __HAVE_FLOAT128
23# define FLT128_MANT_DIG 113
24# define FLT128_DECIMAL_DIG 36
25# define FLT128_DIG 33
26# define FLT128_MIN_EXP (-16381)
27# define FLT128_MIN_10_EXP (-4931)
28# define FLT128_MAX_EXP 16384
29# define FLT128_MAX_10_EXP 4932
30# define FLT128_MAX \
31 __f128 (1.18973149535723176508575932662800702e+4932)
32# define FLT128_EPSILON \
33 __f128 (1.92592994438723585305597794258492732e-34)
34# define FLT128_MIN \
35 __f128 (3.36210314311209350626267781732175260e-4932)
36# define FLT128_TRUE_MIN \
37 __f128 (6.47517511943802511092443895822764655e-4966)
38# endif
39
40/* Types other than _Float128 are typedefs for other types with old
41 compilers. */
42
43# if __HAVE_FLOAT32
44# define FLT32_MANT_DIG FLT_MANT_DIG
45# define FLT32_DECIMAL_DIG FLT_DECIMAL_DIG
46# define FLT32_DIG FLT_DIG
47# define FLT32_MIN_EXP FLT_MIN_EXP
48# define FLT32_MIN_10_EXP FLT_MIN_10_EXP
49# define FLT32_MAX_EXP FLT_MAX_EXP
50# define FLT32_MAX_10_EXP FLT_MAX_10_EXP
51# define FLT32_MAX FLT_MAX
52# define FLT32_EPSILON FLT_EPSILON
53# define FLT32_MIN FLT_MIN
54# define FLT32_TRUE_MIN FLT_TRUE_MIN
55# endif
56
57# if __HAVE_FLOAT64
58# define FLT64_MANT_DIG DBL_MANT_DIG
59# define FLT64_DECIMAL_DIG DBL_DECIMAL_DIG
60# define FLT64_DIG DBL_DIG
61# define FLT64_MIN_EXP DBL_MIN_EXP
62# define FLT64_MIN_10_EXP DBL_MIN_10_EXP
63# define FLT64_MAX_EXP DBL_MAX_EXP
64# define FLT64_MAX_10_EXP DBL_MAX_10_EXP
65# define FLT64_MAX DBL_MAX
66# define FLT64_EPSILON DBL_EPSILON
67# define FLT64_MIN DBL_MIN
68# define FLT64_TRUE_MIN DBL_TRUE_MIN
69# endif
70
71# if __HAVE_FLOAT32X
72# define FLT32X_MANT_DIG DBL_MANT_DIG
73# define FLT32X_DECIMAL_DIG DBL_DECIMAL_DIG
74# define FLT32X_DIG DBL_DIG
75# define FLT32X_MIN_EXP DBL_MIN_EXP
76# define FLT32X_MIN_10_EXP DBL_MIN_10_EXP
77# define FLT32X_MAX_EXP DBL_MAX_EXP
78# define FLT32X_MAX_10_EXP DBL_MAX_10_EXP
79# define FLT32X_MAX DBL_MAX
80# define FLT32X_EPSILON DBL_EPSILON
81# define FLT32X_MIN DBL_MIN
82# define FLT32X_TRUE_MIN DBL_TRUE_MIN
83# endif
84
85# if __HAVE_FLOAT64X
86# if __HAVE_FLOAT64X_LONG_DOUBLE
87# define FLT64X_MANT_DIG LDBL_MANT_DIG
88# define FLT64X_DECIMAL_DIG LDBL_DECIMAL_DIG
89# define FLT64X_DIG LDBL_DIG
90# define FLT64X_MIN_EXP LDBL_MIN_EXP
91# define FLT64X_MIN_10_EXP LDBL_MIN_10_EXP
92# define FLT64X_MAX_EXP LDBL_MAX_EXP
93# define FLT64X_MAX_10_EXP LDBL_MAX_10_EXP
94# define FLT64X_MAX LDBL_MAX
95# define FLT64X_EPSILON LDBL_EPSILON
96# define FLT64X_MIN LDBL_MIN
97# define FLT64X_TRUE_MIN LDBL_TRUE_MIN
98# else
99# define FLT64X_MANT_DIG FLT128_MANT_DIG
100# define FLT64X_DECIMAL_DIG FLT128_DECIMAL_DIG
101# define FLT64X_DIG FLT128_DIG
102# define FLT64X_MIN_EXP FLT128_MIN_EXP
103# define FLT64X_MIN_10_EXP FLT128_MIN_10_EXP
104# define FLT64X_MAX_EXP FLT128_MAX_EXP
105# define FLT64X_MAX_10_EXP FLT128_MAX_10_EXP
106# define FLT64X_MAX FLT128_MAX
107# define FLT64X_EPSILON FLT128_EPSILON
108# define FLT64X_MIN FLT128_MIN
109# define FLT64X_TRUE_MIN FLT128_TRUE_MIN
110# endif
111# endif
112
113#endif
114
115#endif /* _LIBC_FLOAT_H */
116