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1/* Software floating-point emulation.
2 Definitions for IEEE Single Precision.
3 Copyright (C) 1997-2019 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
5 Contributed by Richard Henderson (rth@cygnus.com),
6 Jakub Jelinek (jj@ultra.linux.cz),
7 David S. Miller (davem@redhat.com) and
8 Peter Maydell (pmaydell@chiark.greenend.org.uk).
9
10 The GNU C Library is free software; you can redistribute it and/or
11 modify it under the terms of the GNU Lesser General Public
12 License as published by the Free Software Foundation; either
13 version 2.1 of the License, or (at your option) any later version.
14
15 In addition to the permissions in the GNU Lesser General Public
16 License, the Free Software Foundation gives you unlimited
17 permission to link the compiled version of this file into
18 combinations with other programs, and to distribute those
19 combinations without any restriction coming from the use of this
20 file. (The Lesser General Public License restrictions do apply in
21 other respects; for example, they cover modification of the file,
22 and distribution when not linked into a combine executable.)
23
24 The GNU C Library is distributed in the hope that it will be useful,
25 but WITHOUT ANY WARRANTY; without even the implied warranty of
26 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
27 Lesser General Public License for more details.
28
29 You should have received a copy of the GNU Lesser General Public
30 License along with the GNU C Library; if not, see
31 <http://www.gnu.org/licenses/>. */
32
33#ifndef SOFT_FP_SINGLE_H
34#define SOFT_FP_SINGLE_H 1
35
36#if _FP_W_TYPE_SIZE < 32
37# error "Here's a nickel kid. Go buy yourself a real computer."
38#endif
39
40#define _FP_FRACTBITS_S _FP_W_TYPE_SIZE
41
42#if _FP_W_TYPE_SIZE < 64
43# define _FP_FRACTBITS_DW_S (2 * _FP_W_TYPE_SIZE)
44#else
45# define _FP_FRACTBITS_DW_S _FP_W_TYPE_SIZE
46#endif
47
48#define _FP_FRACBITS_S 24
49#define _FP_FRACXBITS_S (_FP_FRACTBITS_S - _FP_FRACBITS_S)
50#define _FP_WFRACBITS_S (_FP_WORKBITS + _FP_FRACBITS_S)
51#define _FP_WFRACXBITS_S (_FP_FRACTBITS_S - _FP_WFRACBITS_S)
52#define _FP_EXPBITS_S 8
53#define _FP_EXPBIAS_S 127
54#define _FP_EXPMAX_S 255
55#define _FP_QNANBIT_S ((_FP_W_TYPE) 1 << (_FP_FRACBITS_S-2))
56#define _FP_QNANBIT_SH_S ((_FP_W_TYPE) 1 << (_FP_FRACBITS_S-2+_FP_WORKBITS))
57#define _FP_IMPLBIT_S ((_FP_W_TYPE) 1 << (_FP_FRACBITS_S-1))
58#define _FP_IMPLBIT_SH_S ((_FP_W_TYPE) 1 << (_FP_FRACBITS_S-1+_FP_WORKBITS))
59#define _FP_OVERFLOW_S ((_FP_W_TYPE) 1 << (_FP_WFRACBITS_S))
60
61#define _FP_WFRACBITS_DW_S (2 * _FP_WFRACBITS_S)
62#define _FP_WFRACXBITS_DW_S (_FP_FRACTBITS_DW_S - _FP_WFRACBITS_DW_S)
63#define _FP_HIGHBIT_DW_S \
64 ((_FP_W_TYPE) 1 << (_FP_WFRACBITS_DW_S - 1) % _FP_W_TYPE_SIZE)
65
66/* The implementation of _FP_MUL_MEAT_S and _FP_DIV_MEAT_S should be
67 chosen by the target machine. */
68
69typedef float SFtype __attribute__ ((mode (SF)));
70
71union _FP_UNION_S
72{
73 SFtype flt;
74 struct _FP_STRUCT_LAYOUT
75 {
76#if __BYTE_ORDER == __BIG_ENDIAN
77 unsigned sign : 1;
78 unsigned exp : _FP_EXPBITS_S;
79 unsigned frac : _FP_FRACBITS_S - (_FP_IMPLBIT_S != 0);
80#else
81 unsigned frac : _FP_FRACBITS_S - (_FP_IMPLBIT_S != 0);
82 unsigned exp : _FP_EXPBITS_S;
83 unsigned sign : 1;
84#endif
85 } bits;
86};
87
88#define FP_DECL_S(X) _FP_DECL (1, X)
89#define FP_UNPACK_RAW_S(X, val) _FP_UNPACK_RAW_1 (S, X, (val))
90#define FP_UNPACK_RAW_SP(X, val) _FP_UNPACK_RAW_1_P (S, X, (val))
91#define FP_PACK_RAW_S(val, X) _FP_PACK_RAW_1 (S, (val), X)
92#define FP_PACK_RAW_SP(val, X) \
93 do \
94 { \
95 if (!FP_INHIBIT_RESULTS) \
96 _FP_PACK_RAW_1_P (S, (val), X); \
97 } \
98 while (0)
99
100#define FP_UNPACK_S(X, val) \
101 do \
102 { \
103 _FP_UNPACK_RAW_1 (S, X, (val)); \
104 _FP_UNPACK_CANONICAL (S, 1, X); \
105 } \
106 while (0)
107
108#define FP_UNPACK_SP(X, val) \
109 do \
110 { \
111 _FP_UNPACK_RAW_1_P (S, X, (val)); \
112 _FP_UNPACK_CANONICAL (S, 1, X); \
113 } \
114 while (0)
115
116#define FP_UNPACK_SEMIRAW_S(X, val) \
117 do \
118 { \
119 _FP_UNPACK_RAW_1 (S, X, (val)); \
120 _FP_UNPACK_SEMIRAW (S, 1, X); \
121 } \
122 while (0)
123
124#define FP_UNPACK_SEMIRAW_SP(X, val) \
125 do \
126 { \
127 _FP_UNPACK_RAW_1_P (S, X, (val)); \
128 _FP_UNPACK_SEMIRAW (S, 1, X); \
129 } \
130 while (0)
131
132#define FP_PACK_S(val, X) \
133 do \
134 { \
135 _FP_PACK_CANONICAL (S, 1, X); \
136 _FP_PACK_RAW_1 (S, (val), X); \
137 } \
138 while (0)
139
140#define FP_PACK_SP(val, X) \
141 do \
142 { \
143 _FP_PACK_CANONICAL (S, 1, X); \
144 if (!FP_INHIBIT_RESULTS) \
145 _FP_PACK_RAW_1_P (S, (val), X); \
146 } \
147 while (0)
148
149#define FP_PACK_SEMIRAW_S(val, X) \
150 do \
151 { \
152 _FP_PACK_SEMIRAW (S, 1, X); \
153 _FP_PACK_RAW_1 (S, (val), X); \
154 } \
155 while (0)
156
157#define FP_PACK_SEMIRAW_SP(val, X) \
158 do \
159 { \
160 _FP_PACK_SEMIRAW (S, 1, X); \
161 if (!FP_INHIBIT_RESULTS) \
162 _FP_PACK_RAW_1_P (S, (val), X); \
163 } \
164 while (0)
165
166#define FP_ISSIGNAN_S(X) _FP_ISSIGNAN (S, 1, X)
167#define FP_NEG_S(R, X) _FP_NEG (S, 1, R, X)
168#define FP_ADD_S(R, X, Y) _FP_ADD (S, 1, R, X, Y)
169#define FP_SUB_S(R, X, Y) _FP_SUB (S, 1, R, X, Y)
170#define FP_MUL_S(R, X, Y) _FP_MUL (S, 1, R, X, Y)
171#define FP_DIV_S(R, X, Y) _FP_DIV (S, 1, R, X, Y)
172#define FP_SQRT_S(R, X) _FP_SQRT (S, 1, R, X)
173#define _FP_SQRT_MEAT_S(R, S, T, X, Q) _FP_SQRT_MEAT_1 (R, S, T, X, (Q))
174
175#if _FP_W_TYPE_SIZE < 64
176# define FP_FMA_S(R, X, Y, Z) _FP_FMA (S, 1, 2, R, X, Y, Z)
177#else
178# define FP_FMA_S(R, X, Y, Z) _FP_FMA (S, 1, 1, R, X, Y, Z)
179#endif
180
181#define FP_CMP_S(r, X, Y, un, ex) _FP_CMP (S, 1, (r), X, Y, (un), (ex))
182#define FP_CMP_EQ_S(r, X, Y, ex) _FP_CMP_EQ (S, 1, (r), X, Y, (ex))
183#define FP_CMP_UNORD_S(r, X, Y, ex) _FP_CMP_UNORD (S, 1, (r), X, Y, (ex))
184
185#define FP_TO_INT_S(r, X, rsz, rsg) _FP_TO_INT (S, 1, (r), X, (rsz), (rsg))
186#define FP_TO_INT_ROUND_S(r, X, rsz, rsg) \
187 _FP_TO_INT_ROUND (S, 1, (r), X, (rsz), (rsg))
188#define FP_FROM_INT_S(X, r, rs, rt) _FP_FROM_INT (S, 1, X, (r), (rs), rt)
189
190#define _FP_FRAC_HIGH_S(X) _FP_FRAC_HIGH_1 (X)
191#define _FP_FRAC_HIGH_RAW_S(X) _FP_FRAC_HIGH_1 (X)
192
193#if _FP_W_TYPE_SIZE < 64
194# define _FP_FRAC_HIGH_DW_S(X) _FP_FRAC_HIGH_2 (X)
195#else
196# define _FP_FRAC_HIGH_DW_S(X) _FP_FRAC_HIGH_1 (X)
197#endif
198
199#endif /* !SOFT_FP_SINGLE_H */
200

Warning: That file was not part of the compilation database. It may have many parsing errors.