1/* Software floating-point emulation. 2 Definitions for IEEE Quad Precision. 3 Copyright (C) 1997,1998,1999,2006,2007 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, write to the Free 31 Software Foundation, 51 Franklin Street, Fifth Floor, Boston, 32 MA 02110-1301, USA. */ 33 34#if _FP_W_TYPE_SIZE < 32 35#error "Here's a nickel, kid. Go buy yourself a real computer." 36#endif 37 38#if _FP_W_TYPE_SIZE < 64 39#define _FP_FRACTBITS_Q (4*_FP_W_TYPE_SIZE) 40#else 41#define _FP_FRACTBITS_Q (2*_FP_W_TYPE_SIZE) 42#endif 43 44#define _FP_FRACBITS_Q 113 45#define _FP_FRACXBITS_Q (_FP_FRACTBITS_Q - _FP_FRACBITS_Q) 46#define _FP_WFRACBITS_Q (_FP_WORKBITS + _FP_FRACBITS_Q) 47#define _FP_WFRACXBITS_Q (_FP_FRACTBITS_Q - _FP_WFRACBITS_Q) 48#define _FP_EXPBITS_Q 15 49#define _FP_EXPBIAS_Q 16383 50#define _FP_EXPMAX_Q 32767 51 52#define _FP_QNANBIT_Q \ 53 ((_FP_W_TYPE)1 << (_FP_FRACBITS_Q-2) % _FP_W_TYPE_SIZE) 54#define _FP_QNANBIT_SH_Q \ 55 ((_FP_W_TYPE)1 << (_FP_FRACBITS_Q-2+_FP_WORKBITS) % _FP_W_TYPE_SIZE) 56#define _FP_IMPLBIT_Q \ 57 ((_FP_W_TYPE)1 << (_FP_FRACBITS_Q-1) % _FP_W_TYPE_SIZE) 58#define _FP_IMPLBIT_SH_Q \ 59 ((_FP_W_TYPE)1 << (_FP_FRACBITS_Q-1+_FP_WORKBITS) % _FP_W_TYPE_SIZE) 60#define _FP_OVERFLOW_Q \ 61 ((_FP_W_TYPE)1 << (_FP_WFRACBITS_Q % _FP_W_TYPE_SIZE)) 62 63typedef float TFtype __attribute__((mode(TF))); 64 65#if _FP_W_TYPE_SIZE < 64 66 67union _FP_UNION_Q 68{ 69 TFtype flt; 70 struct 71 { 72#if __BYTE_ORDER == __BIG_ENDIAN 73 unsigned sign : 1; 74 unsigned exp : _FP_EXPBITS_Q; 75 unsigned long frac3 : _FP_FRACBITS_Q - (_FP_IMPLBIT_Q != 0)-(_FP_W_TYPE_SIZE * 3); 76 unsigned long frac2 : _FP_W_TYPE_SIZE; 77 unsigned long frac1 : _FP_W_TYPE_SIZE; 78 unsigned long frac0 : _FP_W_TYPE_SIZE; 79#else 80 unsigned long frac0 : _FP_W_TYPE_SIZE; 81 unsigned long frac1 : _FP_W_TYPE_SIZE; 82 unsigned long frac2 : _FP_W_TYPE_SIZE; 83 unsigned long frac3 : _FP_FRACBITS_Q - (_FP_IMPLBIT_Q != 0)-(_FP_W_TYPE_SIZE * 3); 84 unsigned exp : _FP_EXPBITS_Q; 85 unsigned sign : 1; 86#endif /* not bigendian */ 87 } bits __attribute__((packed)); 88}; 89 90 91#define FP_DECL_Q(X) _FP_DECL(4,X) 92#define FP_UNPACK_RAW_Q(X,val) _FP_UNPACK_RAW_4(Q,X,val) 93#define FP_UNPACK_RAW_QP(X,val) _FP_UNPACK_RAW_4_P(Q,X,val) 94#define FP_PACK_RAW_Q(val,X) _FP_PACK_RAW_4(Q,val,X) 95#define FP_PACK_RAW_QP(val,X) \ 96 do { \ 97 if (!FP_INHIBIT_RESULTS) \ 98 _FP_PACK_RAW_4_P(Q,val,X); \ 99 } while (0) 100 101#define FP_UNPACK_Q(X,val) \ 102 do { \ 103 _FP_UNPACK_RAW_4(Q,X,val); \ 104 _FP_UNPACK_CANONICAL(Q,4,X); \ 105 } while (0) 106 107#define FP_UNPACK_QP(X,val) \ 108 do { \ 109 _FP_UNPACK_RAW_4_P(Q,X,val); \ 110 _FP_UNPACK_CANONICAL(Q,4,X); \ 111 } while (0) 112 113#define FP_UNPACK_SEMIRAW_Q(X,val) \ 114 do { \ 115 _FP_UNPACK_RAW_4(Q,X,val); \ 116 _FP_UNPACK_SEMIRAW(Q,4,X); \ 117 } while (0) 118 119#define FP_UNPACK_SEMIRAW_QP(X,val) \ 120 do { \ 121 _FP_UNPACK_RAW_4_P(Q,X,val); \ 122 _FP_UNPACK_SEMIRAW(Q,4,X); \ 123 } while (0) 124 125#define FP_PACK_Q(val,X) \ 126 do { \ 127 _FP_PACK_CANONICAL(Q,4,X); \ 128 _FP_PACK_RAW_4(Q,val,X); \ 129 } while (0) 130 131#define FP_PACK_QP(val,X) \ 132 do { \ 133 _FP_PACK_CANONICAL(Q,4,X); \ 134 if (!FP_INHIBIT_RESULTS) \ 135 _FP_PACK_RAW_4_P(Q,val,X); \ 136 } while (0) 137 138#define FP_PACK_SEMIRAW_Q(val,X) \ 139 do { \ 140 _FP_PACK_SEMIRAW(Q,4,X); \ 141 _FP_PACK_RAW_4(Q,val,X); \ 142 } while (0) 143 144#define FP_PACK_SEMIRAW_QP(val,X) \ 145 do { \ 146 _FP_PACK_SEMIRAW(Q,4,X); \ 147 if (!FP_INHIBIT_RESULTS) \ 148 _FP_PACK_RAW_4_P(Q,val,X); \ 149 } while (0) 150 151#define FP_ISSIGNAN_Q(X) _FP_ISSIGNAN(Q,4,X) 152#define FP_NEG_Q(R,X) _FP_NEG(Q,4,R,X) 153#define FP_ADD_Q(R,X,Y) _FP_ADD(Q,4,R,X,Y) 154#define FP_SUB_Q(R,X,Y) _FP_SUB(Q,4,R,X,Y) 155#define FP_MUL_Q(R,X,Y) _FP_MUL(Q,4,R,X,Y) 156#define FP_DIV_Q(R,X,Y) _FP_DIV(Q,4,R,X,Y) 157#define FP_SQRT_Q(R,X) _FP_SQRT(Q,4,R,X) 158#define _FP_SQRT_MEAT_Q(R,S,T,X,Q) _FP_SQRT_MEAT_4(R,S,T,X,Q) 159 160#define FP_CMP_Q(r,X,Y,un) _FP_CMP(Q,4,r,X,Y,un) 161#define FP_CMP_EQ_Q(r,X,Y) _FP_CMP_EQ(Q,4,r,X,Y) 162#define FP_CMP_UNORD_Q(r,X,Y) _FP_CMP_UNORD(Q,4,r,X,Y) 163 164#define FP_TO_INT_Q(r,X,rsz,rsg) _FP_TO_INT(Q,4,r,X,rsz,rsg) 165#define FP_FROM_INT_Q(X,r,rs,rt) _FP_FROM_INT(Q,4,X,r,rs,rt) 166 167#define _FP_FRAC_HIGH_Q(X) _FP_FRAC_HIGH_4(X) 168#define _FP_FRAC_HIGH_RAW_Q(X) _FP_FRAC_HIGH_4(X) 169 170#else /* not _FP_W_TYPE_SIZE < 64 */ 171union _FP_UNION_Q 172{ 173 TFtype flt /* __attribute__((mode(TF))) */ ; 174 struct { 175 _FP_W_TYPE a, b; 176 } longs; 177 struct { 178#if __BYTE_ORDER == __BIG_ENDIAN 179 unsigned sign : 1; 180 unsigned exp : _FP_EXPBITS_Q; 181 _FP_W_TYPE frac1 : _FP_FRACBITS_Q - (_FP_IMPLBIT_Q != 0) - _FP_W_TYPE_SIZE; 182 _FP_W_TYPE frac0 : _FP_W_TYPE_SIZE; 183#else 184 _FP_W_TYPE frac0 : _FP_W_TYPE_SIZE; 185 _FP_W_TYPE frac1 : _FP_FRACBITS_Q - (_FP_IMPLBIT_Q != 0) - _FP_W_TYPE_SIZE; 186 unsigned exp : _FP_EXPBITS_Q; 187 unsigned sign : 1; 188#endif 189 } bits; 190}; 191 192#define FP_DECL_Q(X) _FP_DECL(2,X) 193#define FP_UNPACK_RAW_Q(X,val) _FP_UNPACK_RAW_2(Q,X,val) 194#define FP_UNPACK_RAW_QP(X,val) _FP_UNPACK_RAW_2_P(Q,X,val) 195#define FP_PACK_RAW_Q(val,X) _FP_PACK_RAW_2(Q,val,X) 196#define FP_PACK_RAW_QP(val,X) \ 197 do { \ 198 if (!FP_INHIBIT_RESULTS) \ 199 _FP_PACK_RAW_2_P(Q,val,X); \ 200 } while (0) 201 202#define FP_UNPACK_Q(X,val) \ 203 do { \ 204 _FP_UNPACK_RAW_2(Q,X,val); \ 205 _FP_UNPACK_CANONICAL(Q,2,X); \ 206 } while (0) 207 208#define FP_UNPACK_QP(X,val) \ 209 do { \ 210 _FP_UNPACK_RAW_2_P(Q,X,val); \ 211 _FP_UNPACK_CANONICAL(Q,2,X); \ 212 } while (0) 213 214#define FP_UNPACK_SEMIRAW_Q(X,val) \ 215 do { \ 216 _FP_UNPACK_RAW_2(Q,X,val); \ 217 _FP_UNPACK_SEMIRAW(Q,2,X); \ 218 } while (0) 219 220#define FP_UNPACK_SEMIRAW_QP(X,val) \ 221 do { \ 222 _FP_UNPACK_RAW_2_P(Q,X,val); \ 223 _FP_UNPACK_SEMIRAW(Q,2,X); \ 224 } while (0) 225 226#define FP_PACK_Q(val,X) \ 227 do { \ 228 _FP_PACK_CANONICAL(Q,2,X); \ 229 _FP_PACK_RAW_2(Q,val,X); \ 230 } while (0) 231 232#define FP_PACK_QP(val,X) \ 233 do { \ 234 _FP_PACK_CANONICAL(Q,2,X); \ 235 if (!FP_INHIBIT_RESULTS) \ 236 _FP_PACK_RAW_2_P(Q,val,X); \ 237 } while (0) 238 239#define FP_PACK_SEMIRAW_Q(val,X) \ 240 do { \ 241 _FP_PACK_SEMIRAW(Q,2,X); \ 242 _FP_PACK_RAW_2(Q,val,X); \ 243 } while (0) 244 245#define FP_PACK_SEMIRAW_QP(val,X) \ 246 do { \ 247 _FP_PACK_SEMIRAW(Q,2,X); \ 248 if (!FP_INHIBIT_RESULTS) \ 249 _FP_PACK_RAW_2_P(Q,val,X); \ 250 } while (0) 251 252#define FP_ISSIGNAN_Q(X) _FP_ISSIGNAN(Q,2,X) 253#define FP_NEG_Q(R,X) _FP_NEG(Q,2,R,X) 254#define FP_ADD_Q(R,X,Y) _FP_ADD(Q,2,R,X,Y) 255#define FP_SUB_Q(R,X,Y) _FP_SUB(Q,2,R,X,Y) 256#define FP_MUL_Q(R,X,Y) _FP_MUL(Q,2,R,X,Y) 257#define FP_DIV_Q(R,X,Y) _FP_DIV(Q,2,R,X,Y) 258#define FP_SQRT_Q(R,X) _FP_SQRT(Q,2,R,X) 259#define _FP_SQRT_MEAT_Q(R,S,T,X,Q) _FP_SQRT_MEAT_2(R,S,T,X,Q) 260 261#define FP_CMP_Q(r,X,Y,un) _FP_CMP(Q,2,r,X,Y,un) 262#define FP_CMP_EQ_Q(r,X,Y) _FP_CMP_EQ(Q,2,r,X,Y) 263#define FP_CMP_UNORD_Q(r,X,Y) _FP_CMP_UNORD(Q,2,r,X,Y) 264 265#define FP_TO_INT_Q(r,X,rsz,rsg) _FP_TO_INT(Q,2,r,X,rsz,rsg) 266#define FP_FROM_INT_Q(X,r,rs,rt) _FP_FROM_INT(Q,2,X,r,rs,rt) 267 268#define _FP_FRAC_HIGH_Q(X) _FP_FRAC_HIGH_2(X) 269#define _FP_FRAC_HIGH_RAW_Q(X) _FP_FRAC_HIGH_2(X) 270 271#endif /* not _FP_W_TYPE_SIZE < 64 */ 272