Mercurial > hg > CbC > CbC_gcc
annotate gcc/fixed-value.h @ 145:1830386684a0
gcc-9.2.0
| author | anatofuz |
|---|---|
| date | Thu, 13 Feb 2020 11:34:05 +0900 |
| parents | 84e7813d76e9 |
| children |
| rev | line source |
|---|---|
| 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 */ |