Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * MIPS floating point support |
| 3 | * Copyright (C) 1994-2000 Algorithmics Ltd. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | * This program is free software; you can distribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License (Version 2) as |
| 7 | * published by the Free Software Foundation. |
| 8 | * |
| 9 | * This program is distributed in the hope it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 12 | * for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License along |
| 15 | * with this program; if not, write to the Free Software Foundation, Inc., |
Ralf Baechle | 3f7cac4 | 2014-04-26 01:49:14 +0200 | [diff] [blame] | 16 | * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | * Nov 7, 2000 |
| 19 | * Modification to allow integration with Linux kernel |
| 20 | * |
| 21 | * Kevin D. Kissell, kevink@mips.com and Carsten Langgard, carstenl@mips.com |
| 22 | * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved. |
Ralf Baechle | cd21dfc | 2005-04-28 13:39:10 +0000 | [diff] [blame] | 23 | */ |
Ralf Baechle | a663bf9 | 2005-10-23 13:44:31 +0100 | [diff] [blame] | 24 | #ifndef __ARCH_MIPS_MATH_EMU_IEEE754_H |
| 25 | #define __ARCH_MIPS_MATH_EMU_IEEE754_H |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | |
Ralf Baechle | cae5506 | 2014-04-16 00:47:59 +0200 | [diff] [blame] | 27 | #include <linux/compiler.h> |
Ralf Baechle | cd21dfc | 2005-04-28 13:39:10 +0000 | [diff] [blame] | 28 | #include <asm/byteorder.h> |
Ralf Baechle | e812a73 | 2014-04-19 14:20:54 +0200 | [diff] [blame] | 29 | #include <linux/kernel.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | #include <linux/types.h> |
Ralf Baechle | cd21dfc | 2005-04-28 13:39:10 +0000 | [diff] [blame] | 31 | #include <linux/sched.h> |
Ralf Baechle | f80cc08 | 2014-04-16 00:40:02 +0200 | [diff] [blame] | 32 | #include <asm/bitfield.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 34 | union ieee754dp { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | struct { |
Ralf Baechle | f80cc08 | 2014-04-16 00:40:02 +0200 | [diff] [blame] | 36 | __BITFIELD_FIELD(unsigned int sign:1, |
| 37 | __BITFIELD_FIELD(unsigned int bexp:11, |
| 38 | __BITFIELD_FIELD(u64 mant:52, |
| 39 | ;))) |
Ralf Baechle | 49548b0 | 2014-04-25 15:48:40 +0200 | [diff] [blame] | 40 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | u64 bits; |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 42 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 44 | union ieee754sp { |
Ralf Baechle | 49548b0 | 2014-04-25 15:48:40 +0200 | [diff] [blame] | 45 | struct { |
| 46 | __BITFIELD_FIELD(unsigned sign:1, |
| 47 | __BITFIELD_FIELD(unsigned bexp:8, |
| 48 | __BITFIELD_FIELD(unsigned mant:23, |
| 49 | ;))) |
| 50 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | u32 bits; |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 52 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | |
| 54 | /* |
| 55 | * single precision (often aka float) |
| 56 | */ |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 57 | int ieee754sp_class(union ieee754sp x); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 59 | union ieee754sp ieee754sp_abs(union ieee754sp x); |
| 60 | union ieee754sp ieee754sp_neg(union ieee754sp x); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 62 | union ieee754sp ieee754sp_add(union ieee754sp x, union ieee754sp y); |
| 63 | union ieee754sp ieee754sp_sub(union ieee754sp x, union ieee754sp y); |
| 64 | union ieee754sp ieee754sp_mul(union ieee754sp x, union ieee754sp y); |
| 65 | union ieee754sp ieee754sp_div(union ieee754sp x, union ieee754sp y); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 67 | union ieee754sp ieee754sp_fint(int x); |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 68 | union ieee754sp ieee754sp_flong(s64 x); |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 69 | union ieee754sp ieee754sp_fdp(union ieee754dp x); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 71 | int ieee754sp_tint(union ieee754sp x); |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 72 | s64 ieee754sp_tlong(union ieee754sp x); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 74 | int ieee754sp_cmp(union ieee754sp x, union ieee754sp y, int cop, int sig); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 76 | union ieee754sp ieee754sp_sqrt(union ieee754sp x); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | |
| 78 | /* |
| 79 | * double precision (often aka double) |
| 80 | */ |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 81 | int ieee754dp_class(union ieee754dp x); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 83 | union ieee754dp ieee754dp_add(union ieee754dp x, union ieee754dp y); |
| 84 | union ieee754dp ieee754dp_sub(union ieee754dp x, union ieee754dp y); |
| 85 | union ieee754dp ieee754dp_mul(union ieee754dp x, union ieee754dp y); |
| 86 | union ieee754dp ieee754dp_div(union ieee754dp x, union ieee754dp y); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 88 | union ieee754dp ieee754dp_abs(union ieee754dp x); |
| 89 | union ieee754dp ieee754dp_neg(union ieee754dp x); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 91 | union ieee754dp ieee754dp_fint(int x); |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 92 | union ieee754dp ieee754dp_flong(s64 x); |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 93 | union ieee754dp ieee754dp_fsp(union ieee754sp x); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 95 | int ieee754dp_tint(union ieee754dp x); |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 96 | s64 ieee754dp_tlong(union ieee754dp x); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 98 | int ieee754dp_cmp(union ieee754dp x, union ieee754dp y, int cop, int sig); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 100 | union ieee754dp ieee754dp_sqrt(union ieee754dp x); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | |
| 102 | |
| 103 | |
| 104 | /* 5 types of floating point number |
| 105 | */ |
Ralf Baechle | 9e8bad1 | 2014-04-19 00:36:32 +0200 | [diff] [blame] | 106 | enum { |
| 107 | IEEE754_CLASS_NORM = 0x00, |
| 108 | IEEE754_CLASS_ZERO = 0x01, |
| 109 | IEEE754_CLASS_DNORM = 0x02, |
| 110 | IEEE754_CLASS_INF = 0x03, |
| 111 | IEEE754_CLASS_SNAN = 0x04, |
| 112 | IEEE754_CLASS_QNAN = 0x05, |
| 113 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | |
| 115 | /* exception numbers */ |
| 116 | #define IEEE754_INEXACT 0x01 |
| 117 | #define IEEE754_UNDERFLOW 0x02 |
| 118 | #define IEEE754_OVERFLOW 0x04 |
| 119 | #define IEEE754_ZERO_DIVIDE 0x08 |
| 120 | #define IEEE754_INVALID_OPERATION 0x10 |
| 121 | |
| 122 | /* cmp operators |
| 123 | */ |
| 124 | #define IEEE754_CLT 0x01 |
| 125 | #define IEEE754_CEQ 0x02 |
| 126 | #define IEEE754_CGT 0x04 |
| 127 | #define IEEE754_CUN 0x08 |
| 128 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | /* "normal" comparisons |
| 130 | */ |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 131 | static inline int ieee754sp_eq(union ieee754sp x, union ieee754sp y) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | { |
| 133 | return ieee754sp_cmp(x, y, IEEE754_CEQ, 0); |
| 134 | } |
| 135 | |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 136 | static inline int ieee754sp_ne(union ieee754sp x, union ieee754sp y) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | { |
| 138 | return ieee754sp_cmp(x, y, |
| 139 | IEEE754_CLT | IEEE754_CGT | IEEE754_CUN, 0); |
| 140 | } |
| 141 | |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 142 | static inline int ieee754sp_lt(union ieee754sp x, union ieee754sp y) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | { |
| 144 | return ieee754sp_cmp(x, y, IEEE754_CLT, 0); |
| 145 | } |
| 146 | |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 147 | static inline int ieee754sp_le(union ieee754sp x, union ieee754sp y) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | { |
| 149 | return ieee754sp_cmp(x, y, IEEE754_CLT | IEEE754_CEQ, 0); |
| 150 | } |
| 151 | |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 152 | static inline int ieee754sp_gt(union ieee754sp x, union ieee754sp y) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | { |
| 154 | return ieee754sp_cmp(x, y, IEEE754_CGT, 0); |
| 155 | } |
| 156 | |
| 157 | |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 158 | static inline int ieee754sp_ge(union ieee754sp x, union ieee754sp y) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | { |
| 160 | return ieee754sp_cmp(x, y, IEEE754_CGT | IEEE754_CEQ, 0); |
| 161 | } |
| 162 | |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 163 | static inline int ieee754dp_eq(union ieee754dp x, union ieee754dp y) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | { |
| 165 | return ieee754dp_cmp(x, y, IEEE754_CEQ, 0); |
| 166 | } |
| 167 | |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 168 | static inline int ieee754dp_ne(union ieee754dp x, union ieee754dp y) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | { |
| 170 | return ieee754dp_cmp(x, y, |
| 171 | IEEE754_CLT | IEEE754_CGT | IEEE754_CUN, 0); |
| 172 | } |
| 173 | |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 174 | static inline int ieee754dp_lt(union ieee754dp x, union ieee754dp y) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | { |
| 176 | return ieee754dp_cmp(x, y, IEEE754_CLT, 0); |
| 177 | } |
| 178 | |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 179 | static inline int ieee754dp_le(union ieee754dp x, union ieee754dp y) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | { |
| 181 | return ieee754dp_cmp(x, y, IEEE754_CLT | IEEE754_CEQ, 0); |
| 182 | } |
| 183 | |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 184 | static inline int ieee754dp_gt(union ieee754dp x, union ieee754dp y) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | { |
| 186 | return ieee754dp_cmp(x, y, IEEE754_CGT, 0); |
| 187 | } |
| 188 | |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 189 | static inline int ieee754dp_ge(union ieee754dp x, union ieee754dp y) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | { |
| 191 | return ieee754dp_cmp(x, y, IEEE754_CGT | IEEE754_CEQ, 0); |
| 192 | } |
| 193 | |
Ralf Baechle | cd21dfc | 2005-04-28 13:39:10 +0000 | [diff] [blame] | 194 | /* |
| 195 | * The control status register |
| 196 | */ |
| 197 | struct _ieee754_csr { |
Ralf Baechle | f80cc08 | 2014-04-16 00:40:02 +0200 | [diff] [blame] | 198 | __BITFIELD_FIELD(unsigned pad0:7, |
| 199 | __BITFIELD_FIELD(unsigned nod:1, /* set 1 for no denormalised numbers */ |
| 200 | __BITFIELD_FIELD(unsigned c:1, /* condition */ |
| 201 | __BITFIELD_FIELD(unsigned pad1:5, |
| 202 | __BITFIELD_FIELD(unsigned cx:6, /* exceptions this operation */ |
| 203 | __BITFIELD_FIELD(unsigned mx:5, /* exception enable mask */ |
| 204 | __BITFIELD_FIELD(unsigned sx:5, /* exceptions total */ |
| 205 | __BITFIELD_FIELD(unsigned rm:2, /* current rounding mode */ |
| 206 | ;)))))))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | }; |
Atsushi Nemoto | eae8907 | 2006-05-16 01:26:03 +0900 | [diff] [blame] | 208 | #define ieee754_csr (*(struct _ieee754_csr *)(¤t->thread.fpu.fcr31)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | |
Ralf Baechle | cd21dfc | 2005-04-28 13:39:10 +0000 | [diff] [blame] | 210 | static inline unsigned ieee754_getrm(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | { |
| 212 | return (ieee754_csr.rm); |
| 213 | } |
Ralf Baechle | cd21dfc | 2005-04-28 13:39:10 +0000 | [diff] [blame] | 214 | static inline unsigned ieee754_setrm(unsigned rm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | { |
| 216 | return (ieee754_csr.rm = rm); |
| 217 | } |
| 218 | |
| 219 | /* |
| 220 | * get current exceptions |
| 221 | */ |
Ralf Baechle | cd21dfc | 2005-04-28 13:39:10 +0000 | [diff] [blame] | 222 | static inline unsigned ieee754_getcx(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | { |
| 224 | return (ieee754_csr.cx); |
| 225 | } |
| 226 | |
| 227 | /* test for current exception condition |
| 228 | */ |
Ralf Baechle | cd21dfc | 2005-04-28 13:39:10 +0000 | [diff] [blame] | 229 | static inline int ieee754_cxtest(unsigned n) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | { |
| 231 | return (ieee754_csr.cx & n); |
| 232 | } |
| 233 | |
| 234 | /* |
| 235 | * get sticky exceptions |
| 236 | */ |
Ralf Baechle | cd21dfc | 2005-04-28 13:39:10 +0000 | [diff] [blame] | 237 | static inline unsigned ieee754_getsx(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | { |
| 239 | return (ieee754_csr.sx); |
| 240 | } |
| 241 | |
| 242 | /* clear sticky conditions |
| 243 | */ |
Ralf Baechle | cd21dfc | 2005-04-28 13:39:10 +0000 | [diff] [blame] | 244 | static inline unsigned ieee754_clrsx(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | { |
| 246 | return (ieee754_csr.sx = 0); |
| 247 | } |
| 248 | |
| 249 | /* test for sticky exception condition |
| 250 | */ |
Ralf Baechle | cd21dfc | 2005-04-28 13:39:10 +0000 | [diff] [blame] | 251 | static inline int ieee754_sxtest(unsigned n) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | { |
| 253 | return (ieee754_csr.sx & n); |
| 254 | } |
| 255 | |
| 256 | /* debugging */ |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 257 | union ieee754sp ieee754sp_dump(char *s, union ieee754sp x); |
| 258 | union ieee754dp ieee754dp_dump(char *s, union ieee754dp x); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | |
Maciej W. Rozycki | 1796ec7 | 2015-04-03 23:24:09 +0100 | [diff] [blame^] | 260 | #define IEEE754_SPCVAL_PZERO 0 /* +0.0 */ |
| 261 | #define IEEE754_SPCVAL_NZERO 1 /* -0.0 */ |
| 262 | #define IEEE754_SPCVAL_PONE 2 /* +1.0 */ |
| 263 | #define IEEE754_SPCVAL_NONE 3 /* -1.0 */ |
| 264 | #define IEEE754_SPCVAL_PTEN 4 /* +10.0 */ |
| 265 | #define IEEE754_SPCVAL_NTEN 5 /* -10.0 */ |
| 266 | #define IEEE754_SPCVAL_PINFINITY 6 /* +inf */ |
| 267 | #define IEEE754_SPCVAL_NINFINITY 7 /* -inf */ |
| 268 | #define IEEE754_SPCVAL_INDEF 8 /* quiet NaN */ |
| 269 | #define IEEE754_SPCVAL_PMAX 9 /* +max norm */ |
| 270 | #define IEEE754_SPCVAL_NMAX 10 /* -max norm */ |
| 271 | #define IEEE754_SPCVAL_PMIN 11 /* +min norm */ |
| 272 | #define IEEE754_SPCVAL_NMIN 12 /* -min norm */ |
| 273 | #define IEEE754_SPCVAL_PMIND 13 /* +min denorm */ |
| 274 | #define IEEE754_SPCVAL_NMIND 14 /* -min denorm */ |
| 275 | #define IEEE754_SPCVAL_P1E31 15 /* + 1.0e31 */ |
| 276 | #define IEEE754_SPCVAL_P1E63 16 /* + 1.0e63 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | |
Ralf Baechle | 49548b0 | 2014-04-25 15:48:40 +0200 | [diff] [blame] | 278 | extern const union ieee754dp __ieee754dp_spcvals[]; |
| 279 | extern const union ieee754sp __ieee754sp_spcvals[]; |
Ralf Baechle | 2209bcb | 2014-04-16 01:31:11 +0200 | [diff] [blame] | 280 | #define ieee754dp_spcvals ((const union ieee754dp *)__ieee754dp_spcvals) |
| 281 | #define ieee754sp_spcvals ((const union ieee754sp *)__ieee754sp_spcvals) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | |
Ralf Baechle | cd21dfc | 2005-04-28 13:39:10 +0000 | [diff] [blame] | 283 | /* |
| 284 | * Return infinity with given sign |
| 285 | */ |
| 286 | #define ieee754dp_inf(sn) (ieee754dp_spcvals[IEEE754_SPCVAL_PINFINITY+(sn)]) |
| 287 | #define ieee754dp_zero(sn) (ieee754dp_spcvals[IEEE754_SPCVAL_PZERO+(sn)]) |
| 288 | #define ieee754dp_one(sn) (ieee754dp_spcvals[IEEE754_SPCVAL_PONE+(sn)]) |
| 289 | #define ieee754dp_ten(sn) (ieee754dp_spcvals[IEEE754_SPCVAL_PTEN+(sn)]) |
| 290 | #define ieee754dp_indef() (ieee754dp_spcvals[IEEE754_SPCVAL_INDEF]) |
| 291 | #define ieee754dp_max(sn) (ieee754dp_spcvals[IEEE754_SPCVAL_PMAX+(sn)]) |
| 292 | #define ieee754dp_min(sn) (ieee754dp_spcvals[IEEE754_SPCVAL_PMIN+(sn)]) |
| 293 | #define ieee754dp_mind(sn) (ieee754dp_spcvals[IEEE754_SPCVAL_PMIND+(sn)]) |
| 294 | #define ieee754dp_1e31() (ieee754dp_spcvals[IEEE754_SPCVAL_P1E31]) |
| 295 | #define ieee754dp_1e63() (ieee754dp_spcvals[IEEE754_SPCVAL_P1E63]) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | |
Ralf Baechle | cd21dfc | 2005-04-28 13:39:10 +0000 | [diff] [blame] | 297 | #define ieee754sp_inf(sn) (ieee754sp_spcvals[IEEE754_SPCVAL_PINFINITY+(sn)]) |
| 298 | #define ieee754sp_zero(sn) (ieee754sp_spcvals[IEEE754_SPCVAL_PZERO+(sn)]) |
| 299 | #define ieee754sp_one(sn) (ieee754sp_spcvals[IEEE754_SPCVAL_PONE+(sn)]) |
| 300 | #define ieee754sp_ten(sn) (ieee754sp_spcvals[IEEE754_SPCVAL_PTEN+(sn)]) |
| 301 | #define ieee754sp_indef() (ieee754sp_spcvals[IEEE754_SPCVAL_INDEF]) |
| 302 | #define ieee754sp_max(sn) (ieee754sp_spcvals[IEEE754_SPCVAL_PMAX+(sn)]) |
| 303 | #define ieee754sp_min(sn) (ieee754sp_spcvals[IEEE754_SPCVAL_PMIN+(sn)]) |
| 304 | #define ieee754sp_mind(sn) (ieee754sp_spcvals[IEEE754_SPCVAL_PMIND+(sn)]) |
| 305 | #define ieee754sp_1e31() (ieee754sp_spcvals[IEEE754_SPCVAL_P1E31]) |
| 306 | #define ieee754sp_1e63() (ieee754sp_spcvals[IEEE754_SPCVAL_P1E63]) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | |
Ralf Baechle | cd21dfc | 2005-04-28 13:39:10 +0000 | [diff] [blame] | 308 | /* |
| 309 | * Indefinite integer value |
| 310 | */ |
Ralf Baechle | e812a73 | 2014-04-19 14:20:54 +0200 | [diff] [blame] | 311 | static inline int ieee754si_indef(void) |
| 312 | { |
| 313 | return INT_MAX; |
| 314 | } |
| 315 | |
| 316 | static inline s64 ieee754di_indef(void) |
| 317 | { |
| 318 | return S64_MAX; |
| 319 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | /* result types for xctx.rt */ |
| 322 | #define IEEE754_RT_SP 0 |
| 323 | #define IEEE754_RT_DP 1 |
| 324 | #define IEEE754_RT_XP 2 |
| 325 | #define IEEE754_RT_SI 3 |
| 326 | #define IEEE754_RT_DI 4 |
| 327 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | /* compat */ |
| 329 | #define ieee754dp_fix(x) ieee754dp_tint(x) |
| 330 | #define ieee754sp_fix(x) ieee754sp_tint(x) |
Ralf Baechle | a663bf9 | 2005-10-23 13:44:31 +0100 | [diff] [blame] | 331 | |
| 332 | #endif /* __ARCH_MIPS_MATH_EMU_IEEE754_H */ |