Mercurial > hg > CbC > CbC_gcc
annotate gcc/fixed-value.h @ 158:494b0b89df80 default tip
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author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
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date | Mon, 25 May 2020 18:13:55 +0900 |
parents | 1830386684a0 |
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rev | line source |
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0 | 1 /* Fixed-point arithmetic support. |
145 | 2 Copyright (C) 2006-2020 Free Software Foundation, Inc. |
0 | 3 |
4 This file is part of GCC. | |
5 | |
6 GCC is free software; you can redistribute it and/or modify it under | |
7 the terms of the GNU General Public License as published by the Free | |
8 Software Foundation; either version 3, or (at your option) any later | |
9 version. | |
10 | |
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
14 for more details. | |
15 | |
16 You should have received a copy of the GNU General Public License | |
17 along with GCC; see the file COPYING3. If not see | |
18 <http://www.gnu.org/licenses/>. */ | |
19 | |
20 #ifndef GCC_FIXED_VALUE_H | |
21 #define GCC_FIXED_VALUE_H | |
22 | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
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23 struct GTY(()) fixed_value |
0 | 24 { |
111 | 25 double_int data; /* Store data up to 2 wide integers. */ |
26 scalar_mode_pod mode; /* Use machine mode to know IBIT and FBIT. */ | |
0 | 27 }; |
28 | |
29 #define FIXED_VALUE_TYPE struct fixed_value | |
30 | |
31 #define MAX_FCONST0 18 /* For storing 18 fixed-point zeros per | |
32 fract, ufract, accum, and uaccum modes . */ | |
33 #define MAX_FCONST1 8 /* For storing 8 fixed-point ones per accum | |
34 and uaccum modes. */ | |
35 /* Constant fixed-point values 0 and 1. */ | |
36 extern FIXED_VALUE_TYPE fconst0[MAX_FCONST0]; | |
37 extern FIXED_VALUE_TYPE fconst1[MAX_FCONST1]; | |
38 | |
39 /* Macros to access fconst0 and fconst1 via machine modes. */ | |
40 #define FCONST0(mode) fconst0[mode - QQmode] | |
41 #define FCONST1(mode) fconst1[mode - HAmode] | |
42 | |
43 /* Return a CONST_FIXED with value R and mode M. */ | |
44 #define CONST_FIXED_FROM_FIXED_VALUE(r, m) \ | |
45 const_fixed_from_fixed_value (r, m) | |
111 | 46 extern rtx const_fixed_from_fixed_value (FIXED_VALUE_TYPE, machine_mode); |
47 | |
48 /* Construct a FIXED_VALUE from a bit payload and machine mode MODE. | |
49 The bits in PAYLOAD are sign-extended/zero-extended according to MODE. */ | |
50 extern FIXED_VALUE_TYPE fixed_from_double_int (double_int, scalar_mode); | |
51 | |
52 /* Return a CONST_FIXED from a bit payload and machine mode MODE. | |
53 The bits in PAYLOAD are sign-extended/zero-extended according to MODE. */ | |
54 static inline rtx | |
55 const_fixed_from_double_int (double_int payload, | |
56 scalar_mode mode) | |
57 { | |
58 return | |
59 const_fixed_from_fixed_value (fixed_from_double_int (payload, mode), | |
60 mode); | |
61 } | |
0 | 62 |
63 /* Initialize from a decimal or hexadecimal string. */ | |
64 extern void fixed_from_string (FIXED_VALUE_TYPE *, const char *, | |
111 | 65 scalar_mode); |
0 | 66 |
67 /* In tree.c: wrap up a FIXED_VALUE_TYPE in a tree node. */ | |
68 extern tree build_fixed (tree, FIXED_VALUE_TYPE); | |
69 | |
70 /* Extend or truncate to a new mode. */ | |
111 | 71 extern bool fixed_convert (FIXED_VALUE_TYPE *, scalar_mode, |
0 | 72 const FIXED_VALUE_TYPE *, bool); |
73 | |
74 /* Convert to a fixed-point mode from an integer. */ | |
111 | 75 extern bool fixed_convert_from_int (FIXED_VALUE_TYPE *, scalar_mode, |
0 | 76 double_int, bool, bool); |
77 | |
78 /* Convert to a fixed-point mode from a real. */ | |
111 | 79 extern bool fixed_convert_from_real (FIXED_VALUE_TYPE *, scalar_mode, |
0 | 80 const REAL_VALUE_TYPE *, bool); |
81 | |
82 /* Convert to a real mode from a fixed-point. */ | |
111 | 83 extern void real_convert_from_fixed (REAL_VALUE_TYPE *, scalar_mode, |
0 | 84 const FIXED_VALUE_TYPE *); |
85 | |
86 /* Compare two fixed-point objects for bitwise identity. */ | |
87 extern bool fixed_identical (const FIXED_VALUE_TYPE *, const FIXED_VALUE_TYPE *); | |
88 | |
89 /* Calculate a hash value. */ | |
90 extern unsigned int fixed_hash (const FIXED_VALUE_TYPE *); | |
91 | |
92 #define FIXED_VALUES_IDENTICAL(x, y) fixed_identical (&(x), &(y)) | |
93 | |
94 /* Determine whether a fixed-point value X is negative. */ | |
95 #define FIXED_VALUE_NEGATIVE(x) fixed_isneg (&(x)) | |
96 | |
97 /* Render F as a decimal floating point constant. */ | |
98 extern void fixed_to_decimal (char *str, const FIXED_VALUE_TYPE *, size_t); | |
99 | |
100 /* Binary or unary arithmetic on tree_code. */ | |
101 extern bool fixed_arithmetic (FIXED_VALUE_TYPE *, int, const FIXED_VALUE_TYPE *, | |
102 const FIXED_VALUE_TYPE *, bool); | |
103 | |
104 /* Compare fixed-point values by tree_code. */ | |
105 extern bool fixed_compare (int, const FIXED_VALUE_TYPE *, | |
106 const FIXED_VALUE_TYPE *); | |
107 | |
108 /* Determine whether a fixed-point value X is negative. */ | |
109 extern bool fixed_isneg (const FIXED_VALUE_TYPE *); | |
110 | |
111 #endif /* GCC_FIXED_VALUE_H */ |