]>
Commit | Line | Data |
---|---|---|
d876f532 UD |
1 | /* Software floating-point emulation. |
2 | Definitions for IEEE Single Precision. | |
b168057a | 3 | Copyright (C) 1997-2015 Free Software Foundation, Inc. |
d876f532 UD |
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 | |
41bdb6e2 AJ |
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. | |
d876f532 | 14 | |
638a783c RM |
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 | ||
d876f532 UD |
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 | |
41bdb6e2 | 27 | Lesser General Public License for more details. |
d876f532 | 28 | |
41bdb6e2 | 29 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
30 | License along with the GNU C Library; if not, see |
31 | <http://www.gnu.org/licenses/>. */ | |
d876f532 | 32 | |
a2f8be9c JM |
33 | #ifndef SOFT_FP_SINGLE_H |
34 | #define SOFT_FP_SINGLE_H 1 | |
35 | ||
d876f532 | 36 | #if _FP_W_TYPE_SIZE < 32 |
71b4dea7 | 37 | # error "Here's a nickel kid. Go buy yourself a real computer." |
d876f532 UD |
38 | #endif |
39 | ||
fe0b1e85 RM |
40 | #define _FP_FRACTBITS_S _FP_W_TYPE_SIZE |
41 | ||
77f01ab5 JM |
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 | ||
d876f532 | 48 | #define _FP_FRACBITS_S 24 |
fe0b1e85 | 49 | #define _FP_FRACXBITS_S (_FP_FRACTBITS_S - _FP_FRACBITS_S) |
d876f532 | 50 | #define _FP_WFRACBITS_S (_FP_WORKBITS + _FP_FRACBITS_S) |
fe0b1e85 | 51 | #define _FP_WFRACXBITS_S (_FP_FRACTBITS_S - _FP_WFRACBITS_S) |
d876f532 UD |
52 | #define _FP_EXPBITS_S 8 |
53 | #define _FP_EXPBIAS_S 127 | |
54 | #define _FP_EXPMAX_S 255 | |
51ca9e29 JM |
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)) | |
d876f532 | 60 | |
77f01ab5 JM |
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 \ | |
51ca9e29 | 64 | ((_FP_W_TYPE) 1 << (_FP_WFRACBITS_DW_S - 1) % _FP_W_TYPE_SIZE) |
77f01ab5 | 65 | |
d876f532 UD |
66 | /* The implementation of _FP_MUL_MEAT_S and _FP_DIV_MEAT_S should be |
67 | chosen by the target machine. */ | |
68 | ||
51ca9e29 | 69 | typedef float SFtype __attribute__ ((mode (SF))); |
fe0b1e85 | 70 | |
d876f532 UD |
71 | union _FP_UNION_S |
72 | { | |
fe0b1e85 | 73 | SFtype flt; |
1e145589 JM |
74 | struct _FP_STRUCT_LAYOUT |
75 | { | |
d876f532 UD |
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 | |
51ca9e29 | 85 | } bits __attribute__ ((packed)); |
d876f532 UD |
86 | }; |
87 | ||
51ca9e29 | 88 | #define FP_DECL_S(X) _FP_DECL (1, X) |
5c0508a3 JM |
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) | |
51ca9e29 | 92 | #define FP_PACK_RAW_SP(val, X) \ |
1e145589 JM |
93 | do \ |
94 | { \ | |
95 | if (!FP_INHIBIT_RESULTS) \ | |
5c0508a3 | 96 | _FP_PACK_RAW_1_P (S, (val), X); \ |
1e145589 JM |
97 | } \ |
98 | while (0) | |
99 | ||
51ca9e29 | 100 | #define FP_UNPACK_S(X, val) \ |
1e145589 JM |
101 | do \ |
102 | { \ | |
5c0508a3 | 103 | _FP_UNPACK_RAW_1 (S, X, (val)); \ |
51ca9e29 | 104 | _FP_UNPACK_CANONICAL (S, 1, X); \ |
1e145589 JM |
105 | } \ |
106 | while (0) | |
107 | ||
51ca9e29 | 108 | #define FP_UNPACK_SP(X, val) \ |
1e145589 JM |
109 | do \ |
110 | { \ | |
5c0508a3 | 111 | _FP_UNPACK_RAW_1_P (S, X, (val)); \ |
51ca9e29 | 112 | _FP_UNPACK_CANONICAL (S, 1, X); \ |
1e145589 JM |
113 | } \ |
114 | while (0) | |
115 | ||
51ca9e29 | 116 | #define FP_UNPACK_SEMIRAW_S(X, val) \ |
1e145589 JM |
117 | do \ |
118 | { \ | |
5c0508a3 | 119 | _FP_UNPACK_RAW_1 (S, X, (val)); \ |
51ca9e29 | 120 | _FP_UNPACK_SEMIRAW (S, 1, X); \ |
1e145589 JM |
121 | } \ |
122 | while (0) | |
123 | ||
51ca9e29 | 124 | #define FP_UNPACK_SEMIRAW_SP(X, val) \ |
1e145589 JM |
125 | do \ |
126 | { \ | |
5c0508a3 | 127 | _FP_UNPACK_RAW_1_P (S, X, (val)); \ |
51ca9e29 | 128 | _FP_UNPACK_SEMIRAW (S, 1, X); \ |
1e145589 JM |
129 | } \ |
130 | while (0) | |
131 | ||
51ca9e29 | 132 | #define FP_PACK_S(val, X) \ |
1e145589 JM |
133 | do \ |
134 | { \ | |
51ca9e29 | 135 | _FP_PACK_CANONICAL (S, 1, X); \ |
5c0508a3 | 136 | _FP_PACK_RAW_1 (S, (val), X); \ |
1e145589 JM |
137 | } \ |
138 | while (0) | |
139 | ||
51ca9e29 | 140 | #define FP_PACK_SP(val, X) \ |
1e145589 JM |
141 | do \ |
142 | { \ | |
51ca9e29 | 143 | _FP_PACK_CANONICAL (S, 1, X); \ |
1e145589 | 144 | if (!FP_INHIBIT_RESULTS) \ |
5c0508a3 | 145 | _FP_PACK_RAW_1_P (S, (val), X); \ |
1e145589 JM |
146 | } \ |
147 | while (0) | |
148 | ||
51ca9e29 | 149 | #define FP_PACK_SEMIRAW_S(val, X) \ |
1e145589 JM |
150 | do \ |
151 | { \ | |
51ca9e29 | 152 | _FP_PACK_SEMIRAW (S, 1, X); \ |
5c0508a3 | 153 | _FP_PACK_RAW_1 (S, (val), X); \ |
1e145589 JM |
154 | } \ |
155 | while (0) | |
156 | ||
51ca9e29 | 157 | #define FP_PACK_SEMIRAW_SP(val, X) \ |
1e145589 JM |
158 | do \ |
159 | { \ | |
51ca9e29 | 160 | _FP_PACK_SEMIRAW (S, 1, X); \ |
1e145589 | 161 | if (!FP_INHIBIT_RESULTS) \ |
5c0508a3 | 162 | _FP_PACK_RAW_1_P (S, (val), X); \ |
1e145589 JM |
163 | } \ |
164 | while (0) | |
fe0b1e85 | 165 | |
51ca9e29 JM |
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) | |
5c0508a3 | 173 | #define _FP_SQRT_MEAT_S(R, S, T, X, Q) _FP_SQRT_MEAT_1 (R, S, T, X, (Q)) |
d876f532 | 174 | |
77f01ab5 | 175 | #if _FP_W_TYPE_SIZE < 64 |
51ca9e29 | 176 | # define FP_FMA_S(R, X, Y, Z) _FP_FMA (S, 1, 2, R, X, Y, Z) |
77f01ab5 | 177 | #else |
51ca9e29 | 178 | # define FP_FMA_S(R, X, Y, Z) _FP_FMA (S, 1, 1, R, X, Y, Z) |
77f01ab5 JM |
179 | #endif |
180 | ||
5c0508a3 JM |
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)) | |
d876f532 | 184 | |
5c0508a3 | 185 | #define FP_TO_INT_S(r, X, rsz, rsg) _FP_TO_INT (S, 1, (r), X, (rsz), (rsg)) |
2004e7fb JM |
186 | #define FP_TO_INT_ROUND_S(r, X, rsz, rsg) \ |
187 | _FP_TO_INT_ROUND (S, 1, (r), X, (rsz), (rsg)) | |
5c0508a3 | 188 | #define FP_FROM_INT_S(X, r, rs, rt) _FP_FROM_INT (S, 1, X, (r), (rs), rt) |
d876f532 | 189 | |
51ca9e29 JM |
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) | |
77f01ab5 JM |
192 | |
193 | #if _FP_W_TYPE_SIZE < 64 | |
51ca9e29 | 194 | # define _FP_FRAC_HIGH_DW_S(X) _FP_FRAC_HIGH_2 (X) |
77f01ab5 | 195 | #else |
51ca9e29 | 196 | # define _FP_FRAC_HIGH_DW_S(X) _FP_FRAC_HIGH_1 (X) |
77f01ab5 | 197 | #endif |
a2f8be9c JM |
198 | |
199 | #endif /* !SOFT_FP_SINGLE_H */ |