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d876f532 UD |
1 | /* Software floating-point emulation. |
2 | Definitions for IEEE Single Precision. | |
6d7e8eda | 3 | Copyright (C) 1997-2023 Free Software Foundation, Inc. |
d876f532 | 4 | This file is part of the GNU C Library. |
d876f532 UD |
5 | |
6 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
7 | modify it under the terms of the GNU Lesser General Public |
8 | License as published by the Free Software Foundation; either | |
9 | version 2.1 of the License, or (at your option) any later version. | |
d876f532 | 10 | |
638a783c RM |
11 | In addition to the permissions in the GNU Lesser General Public |
12 | License, the Free Software Foundation gives you unlimited | |
13 | permission to link the compiled version of this file into | |
14 | combinations with other programs, and to distribute those | |
15 | combinations without any restriction coming from the use of this | |
16 | file. (The Lesser General Public License restrictions do apply in | |
17 | other respects; for example, they cover modification of the file, | |
18 | and distribution when not linked into a combine executable.) | |
19 | ||
d876f532 UD |
20 | The GNU C Library is distributed in the hope that it will be useful, |
21 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
22 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 23 | Lesser General Public License for more details. |
d876f532 | 24 | |
41bdb6e2 | 25 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 26 | License along with the GNU C Library; if not, see |
5a82c748 | 27 | <https://www.gnu.org/licenses/>. */ |
d876f532 | 28 | |
a2f8be9c JM |
29 | #ifndef SOFT_FP_SINGLE_H |
30 | #define SOFT_FP_SINGLE_H 1 | |
31 | ||
d876f532 | 32 | #if _FP_W_TYPE_SIZE < 32 |
71b4dea7 | 33 | # error "Here's a nickel kid. Go buy yourself a real computer." |
d876f532 UD |
34 | #endif |
35 | ||
fe0b1e85 RM |
36 | #define _FP_FRACTBITS_S _FP_W_TYPE_SIZE |
37 | ||
77f01ab5 JM |
38 | #if _FP_W_TYPE_SIZE < 64 |
39 | # define _FP_FRACTBITS_DW_S (2 * _FP_W_TYPE_SIZE) | |
40 | #else | |
41 | # define _FP_FRACTBITS_DW_S _FP_W_TYPE_SIZE | |
42 | #endif | |
43 | ||
d876f532 | 44 | #define _FP_FRACBITS_S 24 |
fe0b1e85 | 45 | #define _FP_FRACXBITS_S (_FP_FRACTBITS_S - _FP_FRACBITS_S) |
d876f532 | 46 | #define _FP_WFRACBITS_S (_FP_WORKBITS + _FP_FRACBITS_S) |
fe0b1e85 | 47 | #define _FP_WFRACXBITS_S (_FP_FRACTBITS_S - _FP_WFRACBITS_S) |
d876f532 UD |
48 | #define _FP_EXPBITS_S 8 |
49 | #define _FP_EXPBIAS_S 127 | |
50 | #define _FP_EXPMAX_S 255 | |
51ca9e29 JM |
51 | #define _FP_QNANBIT_S ((_FP_W_TYPE) 1 << (_FP_FRACBITS_S-2)) |
52 | #define _FP_QNANBIT_SH_S ((_FP_W_TYPE) 1 << (_FP_FRACBITS_S-2+_FP_WORKBITS)) | |
53 | #define _FP_IMPLBIT_S ((_FP_W_TYPE) 1 << (_FP_FRACBITS_S-1)) | |
54 | #define _FP_IMPLBIT_SH_S ((_FP_W_TYPE) 1 << (_FP_FRACBITS_S-1+_FP_WORKBITS)) | |
55 | #define _FP_OVERFLOW_S ((_FP_W_TYPE) 1 << (_FP_WFRACBITS_S)) | |
d876f532 | 56 | |
77f01ab5 JM |
57 | #define _FP_WFRACBITS_DW_S (2 * _FP_WFRACBITS_S) |
58 | #define _FP_WFRACXBITS_DW_S (_FP_FRACTBITS_DW_S - _FP_WFRACBITS_DW_S) | |
59 | #define _FP_HIGHBIT_DW_S \ | |
51ca9e29 | 60 | ((_FP_W_TYPE) 1 << (_FP_WFRACBITS_DW_S - 1) % _FP_W_TYPE_SIZE) |
77f01ab5 | 61 | |
d876f532 UD |
62 | /* The implementation of _FP_MUL_MEAT_S and _FP_DIV_MEAT_S should be |
63 | chosen by the target machine. */ | |
64 | ||
51ca9e29 | 65 | typedef float SFtype __attribute__ ((mode (SF))); |
fe0b1e85 | 66 | |
d876f532 UD |
67 | union _FP_UNION_S |
68 | { | |
fe0b1e85 | 69 | SFtype flt; |
1e145589 JM |
70 | struct _FP_STRUCT_LAYOUT |
71 | { | |
d876f532 UD |
72 | #if __BYTE_ORDER == __BIG_ENDIAN |
73 | unsigned sign : 1; | |
74 | unsigned exp : _FP_EXPBITS_S; | |
75 | unsigned frac : _FP_FRACBITS_S - (_FP_IMPLBIT_S != 0); | |
76 | #else | |
77 | unsigned frac : _FP_FRACBITS_S - (_FP_IMPLBIT_S != 0); | |
78 | unsigned exp : _FP_EXPBITS_S; | |
79 | unsigned sign : 1; | |
80 | #endif | |
049375e2 | 81 | } bits; |
d876f532 UD |
82 | }; |
83 | ||
51ca9e29 | 84 | #define FP_DECL_S(X) _FP_DECL (1, X) |
5c0508a3 JM |
85 | #define FP_UNPACK_RAW_S(X, val) _FP_UNPACK_RAW_1 (S, X, (val)) |
86 | #define FP_UNPACK_RAW_SP(X, val) _FP_UNPACK_RAW_1_P (S, X, (val)) | |
87 | #define FP_PACK_RAW_S(val, X) _FP_PACK_RAW_1 (S, (val), X) | |
51ca9e29 | 88 | #define FP_PACK_RAW_SP(val, X) \ |
1e145589 JM |
89 | do \ |
90 | { \ | |
91 | if (!FP_INHIBIT_RESULTS) \ | |
5c0508a3 | 92 | _FP_PACK_RAW_1_P (S, (val), X); \ |
1e145589 JM |
93 | } \ |
94 | while (0) | |
95 | ||
51ca9e29 | 96 | #define FP_UNPACK_S(X, val) \ |
1e145589 JM |
97 | do \ |
98 | { \ | |
5c0508a3 | 99 | _FP_UNPACK_RAW_1 (S, X, (val)); \ |
51ca9e29 | 100 | _FP_UNPACK_CANONICAL (S, 1, X); \ |
1e145589 JM |
101 | } \ |
102 | while (0) | |
103 | ||
51ca9e29 | 104 | #define FP_UNPACK_SP(X, val) \ |
1e145589 JM |
105 | do \ |
106 | { \ | |
5c0508a3 | 107 | _FP_UNPACK_RAW_1_P (S, X, (val)); \ |
51ca9e29 | 108 | _FP_UNPACK_CANONICAL (S, 1, X); \ |
1e145589 JM |
109 | } \ |
110 | while (0) | |
111 | ||
51ca9e29 | 112 | #define FP_UNPACK_SEMIRAW_S(X, val) \ |
1e145589 JM |
113 | do \ |
114 | { \ | |
5c0508a3 | 115 | _FP_UNPACK_RAW_1 (S, X, (val)); \ |
51ca9e29 | 116 | _FP_UNPACK_SEMIRAW (S, 1, X); \ |
1e145589 JM |
117 | } \ |
118 | while (0) | |
119 | ||
51ca9e29 | 120 | #define FP_UNPACK_SEMIRAW_SP(X, val) \ |
1e145589 JM |
121 | do \ |
122 | { \ | |
5c0508a3 | 123 | _FP_UNPACK_RAW_1_P (S, X, (val)); \ |
51ca9e29 | 124 | _FP_UNPACK_SEMIRAW (S, 1, X); \ |
1e145589 JM |
125 | } \ |
126 | while (0) | |
127 | ||
51ca9e29 | 128 | #define FP_PACK_S(val, X) \ |
1e145589 JM |
129 | do \ |
130 | { \ | |
51ca9e29 | 131 | _FP_PACK_CANONICAL (S, 1, X); \ |
5c0508a3 | 132 | _FP_PACK_RAW_1 (S, (val), X); \ |
1e145589 JM |
133 | } \ |
134 | while (0) | |
135 | ||
51ca9e29 | 136 | #define FP_PACK_SP(val, X) \ |
1e145589 JM |
137 | do \ |
138 | { \ | |
51ca9e29 | 139 | _FP_PACK_CANONICAL (S, 1, X); \ |
1e145589 | 140 | if (!FP_INHIBIT_RESULTS) \ |
5c0508a3 | 141 | _FP_PACK_RAW_1_P (S, (val), X); \ |
1e145589 JM |
142 | } \ |
143 | while (0) | |
144 | ||
51ca9e29 | 145 | #define FP_PACK_SEMIRAW_S(val, X) \ |
1e145589 JM |
146 | do \ |
147 | { \ | |
51ca9e29 | 148 | _FP_PACK_SEMIRAW (S, 1, X); \ |
5c0508a3 | 149 | _FP_PACK_RAW_1 (S, (val), X); \ |
1e145589 JM |
150 | } \ |
151 | while (0) | |
152 | ||
51ca9e29 | 153 | #define FP_PACK_SEMIRAW_SP(val, X) \ |
1e145589 JM |
154 | do \ |
155 | { \ | |
51ca9e29 | 156 | _FP_PACK_SEMIRAW (S, 1, X); \ |
1e145589 | 157 | if (!FP_INHIBIT_RESULTS) \ |
5c0508a3 | 158 | _FP_PACK_RAW_1_P (S, (val), X); \ |
1e145589 JM |
159 | } \ |
160 | while (0) | |
fe0b1e85 | 161 | |
51ca9e29 JM |
162 | #define FP_ISSIGNAN_S(X) _FP_ISSIGNAN (S, 1, X) |
163 | #define FP_NEG_S(R, X) _FP_NEG (S, 1, R, X) | |
164 | #define FP_ADD_S(R, X, Y) _FP_ADD (S, 1, R, X, Y) | |
165 | #define FP_SUB_S(R, X, Y) _FP_SUB (S, 1, R, X, Y) | |
166 | #define FP_MUL_S(R, X, Y) _FP_MUL (S, 1, R, X, Y) | |
167 | #define FP_DIV_S(R, X, Y) _FP_DIV (S, 1, R, X, Y) | |
168 | #define FP_SQRT_S(R, X) _FP_SQRT (S, 1, R, X) | |
5c0508a3 | 169 | #define _FP_SQRT_MEAT_S(R, S, T, X, Q) _FP_SQRT_MEAT_1 (R, S, T, X, (Q)) |
d876f532 | 170 | |
77f01ab5 | 171 | #if _FP_W_TYPE_SIZE < 64 |
51ca9e29 | 172 | # define FP_FMA_S(R, X, Y, Z) _FP_FMA (S, 1, 2, R, X, Y, Z) |
77f01ab5 | 173 | #else |
51ca9e29 | 174 | # define FP_FMA_S(R, X, Y, Z) _FP_FMA (S, 1, 1, R, X, Y, Z) |
77f01ab5 JM |
175 | #endif |
176 | ||
5c0508a3 JM |
177 | #define FP_CMP_S(r, X, Y, un, ex) _FP_CMP (S, 1, (r), X, Y, (un), (ex)) |
178 | #define FP_CMP_EQ_S(r, X, Y, ex) _FP_CMP_EQ (S, 1, (r), X, Y, (ex)) | |
179 | #define FP_CMP_UNORD_S(r, X, Y, ex) _FP_CMP_UNORD (S, 1, (r), X, Y, (ex)) | |
d876f532 | 180 | |
5c0508a3 | 181 | #define FP_TO_INT_S(r, X, rsz, rsg) _FP_TO_INT (S, 1, (r), X, (rsz), (rsg)) |
2004e7fb JM |
182 | #define FP_TO_INT_ROUND_S(r, X, rsz, rsg) \ |
183 | _FP_TO_INT_ROUND (S, 1, (r), X, (rsz), (rsg)) | |
5c0508a3 | 184 | #define FP_FROM_INT_S(X, r, rs, rt) _FP_FROM_INT (S, 1, X, (r), (rs), rt) |
d876f532 | 185 | |
51ca9e29 JM |
186 | #define _FP_FRAC_HIGH_S(X) _FP_FRAC_HIGH_1 (X) |
187 | #define _FP_FRAC_HIGH_RAW_S(X) _FP_FRAC_HIGH_1 (X) | |
77f01ab5 JM |
188 | |
189 | #if _FP_W_TYPE_SIZE < 64 | |
51ca9e29 | 190 | # define _FP_FRAC_HIGH_DW_S(X) _FP_FRAC_HIGH_2 (X) |
77f01ab5 | 191 | #else |
51ca9e29 | 192 | # define _FP_FRAC_HIGH_DW_S(X) _FP_FRAC_HIGH_1 (X) |
77f01ab5 | 193 | #endif |
a2f8be9c JM |
194 | |
195 | #endif /* !SOFT_FP_SINGLE_H */ |