1 /* Software floating-point emulation. 2 Definitions for IEEE Quad Precision. 3 Copyright (C) 1997,1998,1999,2006,2007,2012 Free Software Foundation, Inc. 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 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. 14 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 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 27 Lesser General Public License for more details. 28 29 You should have received a copy of the GNU Lesser General Public 30 License along with the GNU C Library; if not, see 31 <http://www.gnu.org/licenses/>. */ 32 33 #if _FP_W_TYPE_SIZE < 32 34 #error "Here's a nickel, kid. Go buy yourself a real computer." 35 #endif 36 37 #if _FP_W_TYPE_SIZE < 64 38 #define _FP_FRACTBITS_Q (4*_FP_W_TYPE_SIZE) 39 #else 40 #define _FP_FRACTBITS_Q (2*_FP_W_TYPE_SIZE) 41 #endif 42 43 #define _FP_FRACBITS_Q 113 44 #define _FP_FRACXBITS_Q (_FP_FRACTBITS_Q - _FP_FRACBITS_Q) 45 #define _FP_WFRACBITS_Q (_FP_WORKBITS + _FP_FRACBITS_Q) 46 #define _FP_WFRACXBITS_Q (_FP_FRACTBITS_Q - _FP_WFRACBITS_Q) 47 #define _FP_EXPBITS_Q 15 48 #define _FP_EXPBIAS_Q 16383 49 #define _FP_EXPMAX_Q 32767 50 51 #define _FP_QNANBIT_Q \ 52 ((_FP_W_TYPE)1 << (_FP_FRACBITS_Q-2) % _FP_W_TYPE_SIZE) 53 #define _FP_QNANBIT_SH_Q \ 54 ((_FP_W_TYPE)1 << (_FP_FRACBITS_Q-2+_FP_WORKBITS) % _FP_W_TYPE_SIZE) 55 #define _FP_IMPLBIT_Q \ 56 ((_FP_W_TYPE)1 << (_FP_FRACBITS_Q-1) % _FP_W_TYPE_SIZE) 57 #define _FP_IMPLBIT_SH_Q \ 58 ((_FP_W_TYPE)1 << (_FP_FRACBITS_Q-1+_FP_WORKBITS) % _FP_W_TYPE_SIZE) 59 #define _FP_OVERFLOW_Q \ 60 ((_FP_W_TYPE)1 << (_FP_WFRACBITS_Q % _FP_W_TYPE_SIZE)) 61 62 typedef float TFtype __attribute__((mode(TF))); 63 64 #if _FP_W_TYPE_SIZE < 64 65 66 union _FP_UNION_Q 67 { 68 TFtype flt; 69 struct _FP_STRUCT_LAYOUT 70 { 71 #if __BYTE_ORDER == __BIG_ENDIAN 72 unsigned sign : 1; 73 unsigned exp : _FP_EXPBITS_Q; 74 unsigned long frac3 : _FP_FRACBITS_Q - (_FP_IMPLBIT_Q != 0)-(_FP_W_TYPE_SIZE * 3); 75 unsigned long frac2 : _FP_W_TYPE_SIZE; 76 unsigned long frac1 : _FP_W_TYPE_SIZE; 77 unsigned long frac0 : _FP_W_TYPE_SIZE; 78 #else 79 unsigned long frac0 : _FP_W_TYPE_SIZE; 80 unsigned long frac1 : _FP_W_TYPE_SIZE; 81 unsigned long frac2 : _FP_W_TYPE_SIZE; 82 unsigned long frac3 : _FP_FRACBITS_Q - (_FP_IMPLBIT_Q != 0)-(_FP_W_TYPE_SIZE * 3); 83 unsigned exp : _FP_EXPBITS_Q; 84 unsigned sign : 1; 85 #endif /* not bigendian */ 86 } bits __attribute__((packed)); 87 }; 88 89 90 #define FP_DECL_Q(X) _FP_DECL(4,X) 91 #define FP_UNPACK_RAW_Q(X,val) _FP_UNPACK_RAW_4(Q,X,val) 92 #define FP_UNPACK_RAW_QP(X,val) _FP_UNPACK_RAW_4_P(Q,X,val) 93 #define FP_PACK_RAW_Q(val,X) _FP_PACK_RAW_4(Q,val,X) 94 #define FP_PACK_RAW_QP(val,X) \ 95 do { \ 96 if (!FP_INHIBIT_RESULTS) \ 97 _FP_PACK_RAW_4_P(Q,val,X); \ 98 } while (0) 99 100 #define FP_UNPACK_Q(X,val) \ 101 do { \ 102 _FP_UNPACK_RAW_4(Q,X,val); \ 103 _FP_UNPACK_CANONICAL(Q,4,X); \ 104 } while (0) 105 106 #define FP_UNPACK_QP(X,val) \ 107 do { \ 108 _FP_UNPACK_RAW_4_P(Q,X,val); \ 109 _FP_UNPACK_CANONICAL(Q,4,X); \ 110 } while (0) 111 112 #define FP_UNPACK_SEMIRAW_Q(X,val) \ 113 do { \ 114 _FP_UNPACK_RAW_4(Q,X,val); \ 115 _FP_UNPACK_SEMIRAW(Q,4,X); \ 116 } while (0) 117 118 #define FP_UNPACK_SEMIRAW_QP(X,val) \ 119 do { \ 120 _FP_UNPACK_RAW_4_P(Q,X,val); \ 121 _FP_UNPACK_SEMIRAW(Q,4,X); \ 122 } while (0) 123 124 #define FP_PACK_Q(val,X) \ 125 do { \ 126 _FP_PACK_CANONICAL(Q,4,X); \ 127 _FP_PACK_RAW_4(Q,val,X); \ 128 } while (0) 129 130 #define FP_PACK_QP(val,X) \ 131 do { \ 132 _FP_PACK_CANONICAL(Q,4,X); \ 133 if (!FP_INHIBIT_RESULTS) \ 134 _FP_PACK_RAW_4_P(Q,val,X); \ 135 } while (0) 136 137 #define FP_PACK_SEMIRAW_Q(val,X) \ 138 do { \ 139 _FP_PACK_SEMIRAW(Q,4,X); \ 140 _FP_PACK_RAW_4(Q,val,X); \ 141 } while (0) 142 143 #define FP_PACK_SEMIRAW_QP(val,X) \ 144 do { \ 145 _FP_PACK_SEMIRAW(Q,4,X); \ 146 if (!FP_INHIBIT_RESULTS) \ 147 _FP_PACK_RAW_4_P(Q,val,X); \ 148 } while (0) 149 150 #define FP_ISSIGNAN_Q(X) _FP_ISSIGNAN(Q,4,X) 151 #define FP_NEG_Q(R,X) _FP_NEG(Q,4,R,X) 152 #define FP_ADD_Q(R,X,Y) _FP_ADD(Q,4,R,X,Y) 153 #define FP_SUB_Q(R,X,Y) _FP_SUB(Q,4,R,X,Y) 154 #define FP_MUL_Q(R,X,Y) _FP_MUL(Q,4,R,X,Y) 155 #define FP_DIV_Q(R,X,Y) _FP_DIV(Q,4,R,X,Y) 156 #define FP_SQRT_Q(R,X) _FP_SQRT(Q,4,R,X) 157 #define _FP_SQRT_MEAT_Q(R,S,T,X,Q) _FP_SQRT_MEAT_4(R,S,T,X,Q) 158 159 #define FP_CMP_Q(r,X,Y,un) _FP_CMP(Q,4,r,X,Y,un) 160 #define FP_CMP_EQ_Q(r,X,Y) _FP_CMP_EQ(Q,4,r,X,Y) 161 #define FP_CMP_UNORD_Q(r,X,Y) _FP_CMP_UNORD(Q,4,r,X,Y) 162 163 #define FP_TO_INT_Q(r,X,rsz,rsg) _FP_TO_INT(Q,4,r,X,rsz,rsg) 164 #define FP_FROM_INT_Q(X,r,rs,rt) _FP_FROM_INT(Q,4,X,r,rs,rt) 165 166 #define _FP_FRAC_HIGH_Q(X) _FP_FRAC_HIGH_4(X) 167 #define _FP_FRAC_HIGH_RAW_Q(X) _FP_FRAC_HIGH_4(X) 168 169 #else /* not _FP_W_TYPE_SIZE < 64 */ 170 union _FP_UNION_Q 171 { 172 TFtype flt /* __attribute__((mode(TF))) */ ; 173 struct _FP_STRUCT_LAYOUT { 174 _FP_W_TYPE a, b; 175 } longs; 176 struct _FP_STRUCT_LAYOUT { 177 #if __BYTE_ORDER == __BIG_ENDIAN 178 unsigned sign : 1; 179 unsigned exp : _FP_EXPBITS_Q; 180 _FP_W_TYPE frac1 : _FP_FRACBITS_Q - (_FP_IMPLBIT_Q != 0) - _FP_W_TYPE_SIZE; 181 _FP_W_TYPE frac0 : _FP_W_TYPE_SIZE; 182 #else 183 _FP_W_TYPE frac0 : _FP_W_TYPE_SIZE; 184 _FP_W_TYPE frac1 : _FP_FRACBITS_Q - (_FP_IMPLBIT_Q != 0) - _FP_W_TYPE_SIZE; 185 unsigned exp : _FP_EXPBITS_Q; 186 unsigned sign : 1; 187 #endif 188 } bits; 189 }; 190 191 #define FP_DECL_Q(X) _FP_DECL(2,X) 192 #define FP_UNPACK_RAW_Q(X,val) _FP_UNPACK_RAW_2(Q,X,val) 193 #define FP_UNPACK_RAW_QP(X,val) _FP_UNPACK_RAW_2_P(Q,X,val) 194 #define FP_PACK_RAW_Q(val,X) _FP_PACK_RAW_2(Q,val,X) 195 #define FP_PACK_RAW_QP(val,X) \ 196 do { \ 197 if (!FP_INHIBIT_RESULTS) \ 198 _FP_PACK_RAW_2_P(Q,val,X); \ 199 } while (0) 200 201 #define FP_UNPACK_Q(X,val) \ 202 do { \ 203 _FP_UNPACK_RAW_2(Q,X,val); \ 204 _FP_UNPACK_CANONICAL(Q,2,X); \ 205 } while (0) 206 207 #define FP_UNPACK_QP(X,val) \ 208 do { \ 209 _FP_UNPACK_RAW_2_P(Q,X,val); \ 210 _FP_UNPACK_CANONICAL(Q,2,X); \ 211 } while (0) 212 213 #define FP_UNPACK_SEMIRAW_Q(X,val) \ 214 do { \ 215 _FP_UNPACK_RAW_2(Q,X,val); \ 216 _FP_UNPACK_SEMIRAW(Q,2,X); \ 217 } while (0) 218 219 #define FP_UNPACK_SEMIRAW_QP(X,val) \ 220 do { \ 221 _FP_UNPACK_RAW_2_P(Q,X,val); \ 222 _FP_UNPACK_SEMIRAW(Q,2,X); \ 223 } while (0) 224 225 #define FP_PACK_Q(val,X) \ 226 do { \ 227 _FP_PACK_CANONICAL(Q,2,X); \ 228 _FP_PACK_RAW_2(Q,val,X); \ 229 } while (0) 230 231 #define FP_PACK_QP(val,X) \ 232 do { \ 233 _FP_PACK_CANONICAL(Q,2,X); \ 234 if (!FP_INHIBIT_RESULTS) \ 235 _FP_PACK_RAW_2_P(Q,val,X); \ 236 } while (0) 237 238 #define FP_PACK_SEMIRAW_Q(val,X) \ 239 do { \ 240 _FP_PACK_SEMIRAW(Q,2,X); \ 241 _FP_PACK_RAW_2(Q,val,X); \ 242 } while (0) 243 244 #define FP_PACK_SEMIRAW_QP(val,X) \ 245 do { \ 246 _FP_PACK_SEMIRAW(Q,2,X); \ 247 if (!FP_INHIBIT_RESULTS) \ 248 _FP_PACK_RAW_2_P(Q,val,X); \ 249 } while (0) 250 251 #define FP_ISSIGNAN_Q(X) _FP_ISSIGNAN(Q,2,X) 252 #define FP_NEG_Q(R,X) _FP_NEG(Q,2,R,X) 253 #define FP_ADD_Q(R,X,Y) _FP_ADD(Q,2,R,X,Y) 254 #define FP_SUB_Q(R,X,Y) _FP_SUB(Q,2,R,X,Y) 255 #define FP_MUL_Q(R,X,Y) _FP_MUL(Q,2,R,X,Y) 256 #define FP_DIV_Q(R,X,Y) _FP_DIV(Q,2,R,X,Y) 257 #define FP_SQRT_Q(R,X) _FP_SQRT(Q,2,R,X) 258 #define _FP_SQRT_MEAT_Q(R,S,T,X,Q) _FP_SQRT_MEAT_2(R,S,T,X,Q) 259 260 #define FP_CMP_Q(r,X,Y,un) _FP_CMP(Q,2,r,X,Y,un) 261 #define FP_CMP_EQ_Q(r,X,Y) _FP_CMP_EQ(Q,2,r,X,Y) 262 #define FP_CMP_UNORD_Q(r,X,Y) _FP_CMP_UNORD(Q,2,r,X,Y) 263 264 #define FP_TO_INT_Q(r,X,rsz,rsg) _FP_TO_INT(Q,2,r,X,rsz,rsg) 265 #define FP_FROM_INT_Q(X,r,rs,rt) _FP_FROM_INT(Q,2,X,r,rs,rt) 266 267 #define _FP_FRAC_HIGH_Q(X) _FP_FRAC_HIGH_2(X) 268 #define _FP_FRAC_HIGH_RAW_Q(X) _FP_FRAC_HIGH_2(X) 269 270 #endif /* not _FP_W_TYPE_SIZE < 64 */ 271