1 /* Software floating-point emulation. 2 Definitions for IEEE Quad Precision. 3 Copyright (C) 1997,1998,1999 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 Library General Public License as 12 published by the Free Software Foundation; either version 2 of the 13 License, or (at your option) any later version. 14 15 The GNU C Library is distributed in the hope that it will be useful, 16 but WITHOUT ANY WARRANTY; without even the implied warranty of 17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18 Library General Public License for more details. 19 20 You should have received a copy of the GNU Library General Public 21 License along with the GNU C Library; see the file COPYING.LIB. If 22 not, write to the Free Software Foundation, Inc., 23 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 24 25 #ifndef __MATH_EMU_QUAD_H__ 26 #define __MATH_EMU_QUAD_H__ 27 28 #if _FP_W_TYPE_SIZE < 32 29 #error "Here's a nickel, kid. Go buy yourself a real computer." 30 #endif 31 32 #if _FP_W_TYPE_SIZE < 64 33 #define _FP_FRACTBITS_Q (4*_FP_W_TYPE_SIZE) 34 #else 35 #define _FP_FRACTBITS_Q (2*_FP_W_TYPE_SIZE) 36 #endif 37 38 #define _FP_FRACBITS_Q 113 39 #define _FP_FRACXBITS_Q (_FP_FRACTBITS_Q - _FP_FRACBITS_Q) 40 #define _FP_WFRACBITS_Q (_FP_WORKBITS + _FP_FRACBITS_Q) 41 #define _FP_WFRACXBITS_Q (_FP_FRACTBITS_Q - _FP_WFRACBITS_Q) 42 #define _FP_EXPBITS_Q 15 43 #define _FP_EXPBIAS_Q 16383 44 #define _FP_EXPMAX_Q 32767 45 46 #define _FP_QNANBIT_Q \ 47 ((_FP_W_TYPE)1 << (_FP_FRACBITS_Q-2) % _FP_W_TYPE_SIZE) 48 #define _FP_IMPLBIT_Q \ 49 ((_FP_W_TYPE)1 << (_FP_FRACBITS_Q-1) % _FP_W_TYPE_SIZE) 50 #define _FP_OVERFLOW_Q \ 51 ((_FP_W_TYPE)1 << (_FP_WFRACBITS_Q % _FP_W_TYPE_SIZE)) 52 53 #if _FP_W_TYPE_SIZE < 64 54 55 union _FP_UNION_Q 56 { 57 long double flt; 58 struct 59 { 60 #if __BYTE_ORDER == __BIG_ENDIAN 61 unsigned sign : 1; 62 unsigned exp : _FP_EXPBITS_Q; 63 unsigned long frac3 : _FP_FRACBITS_Q - (_FP_IMPLBIT_Q != 0)-(_FP_W_TYPE_SIZE * 3); 64 unsigned long frac2 : _FP_W_TYPE_SIZE; 65 unsigned long frac1 : _FP_W_TYPE_SIZE; 66 unsigned long frac0 : _FP_W_TYPE_SIZE; 67 #else 68 unsigned long frac0 : _FP_W_TYPE_SIZE; 69 unsigned long frac1 : _FP_W_TYPE_SIZE; 70 unsigned long frac2 : _FP_W_TYPE_SIZE; 71 unsigned long frac3 : _FP_FRACBITS_Q - (_FP_IMPLBIT_Q != 0)-(_FP_W_TYPE_SIZE * 3); 72 unsigned exp : _FP_EXPBITS_Q; 73 unsigned sign : 1; 74 #endif /* not bigendian */ 75 } bits __attribute__((packed)); 76 }; 77 78 79 #define FP_DECL_Q(X) _FP_DECL(4,X) 80 #define FP_UNPACK_RAW_Q(X,val) _FP_UNPACK_RAW_4(Q,X,val) 81 #define FP_UNPACK_RAW_QP(X,val) _FP_UNPACK_RAW_4_P(Q,X,val) 82 #define FP_PACK_RAW_Q(val,X) _FP_PACK_RAW_4(Q,val,X) 83 #define FP_PACK_RAW_QP(val,X) \ 84 do { \ 85 if (!FP_INHIBIT_RESULTS) \ 86 _FP_PACK_RAW_4_P(Q,val,X); \ 87 } while (0) 88 89 #define FP_UNPACK_Q(X,val) \ 90 do { \ 91 _FP_UNPACK_RAW_4(Q,X,val); \ 92 _FP_UNPACK_CANONICAL(Q,4,X); \ 93 } while (0) 94 95 #define FP_UNPACK_QP(X,val) \ 96 do { \ 97 _FP_UNPACK_RAW_4_P(Q,X,val); \ 98 _FP_UNPACK_CANONICAL(Q,4,X); \ 99 } while (0) 100 101 #define FP_PACK_Q(val,X) \ 102 do { \ 103 _FP_PACK_CANONICAL(Q,4,X); \ 104 _FP_PACK_RAW_4(Q,val,X); \ 105 } while (0) 106 107 #define FP_PACK_QP(val,X) \ 108 do { \ 109 _FP_PACK_CANONICAL(Q,4,X); \ 110 if (!FP_INHIBIT_RESULTS) \ 111 _FP_PACK_RAW_4_P(Q,val,X); \ 112 } while (0) 113 114 #define FP_ISSIGNAN_Q(X) _FP_ISSIGNAN(Q,4,X) 115 #define FP_NEG_Q(R,X) _FP_NEG(Q,4,R,X) 116 #define FP_ADD_Q(R,X,Y) _FP_ADD(Q,4,R,X,Y) 117 #define FP_SUB_Q(R,X,Y) _FP_SUB(Q,4,R,X,Y) 118 #define FP_MUL_Q(R,X,Y) _FP_MUL(Q,4,R,X,Y) 119 #define FP_DIV_Q(R,X,Y) _FP_DIV(Q,4,R,X,Y) 120 #define FP_SQRT_Q(R,X) _FP_SQRT(Q,4,R,X) 121 #define _FP_SQRT_MEAT_Q(R,S,T,X,Q) _FP_SQRT_MEAT_4(R,S,T,X,Q) 122 123 #define FP_CMP_Q(r,X,Y,un) _FP_CMP(Q,4,r,X,Y,un) 124 #define FP_CMP_EQ_Q(r,X,Y) _FP_CMP_EQ(Q,4,r,X,Y) 125 126 #define FP_TO_INT_Q(r,X,rsz,rsg) _FP_TO_INT(Q,4,r,X,rsz,rsg) 127 #define FP_TO_INT_ROUND_Q(r,X,rsz,rsg) _FP_TO_INT_ROUND(Q,4,r,X,rsz,rsg) 128 #define FP_FROM_INT_Q(X,r,rs,rt) _FP_FROM_INT(Q,4,X,r,rs,rt) 129 130 #define _FP_FRAC_HIGH_Q(X) _FP_FRAC_HIGH_4(X) 131 #define _FP_FRAC_HIGH_RAW_Q(X) _FP_FRAC_HIGH_4(X) 132 133 #else /* not _FP_W_TYPE_SIZE < 64 */ 134 union _FP_UNION_Q 135 { 136 long double flt /* __attribute__((mode(TF))) */ ; 137 struct { 138 #if __BYTE_ORDER == __BIG_ENDIAN 139 unsigned sign : 1; 140 unsigned exp : _FP_EXPBITS_Q; 141 unsigned long frac1 : _FP_FRACBITS_Q-(_FP_IMPLBIT_Q != 0)-_FP_W_TYPE_SIZE; 142 unsigned long frac0 : _FP_W_TYPE_SIZE; 143 #else 144 unsigned long frac0 : _FP_W_TYPE_SIZE; 145 unsigned long frac1 : _FP_FRACBITS_Q-(_FP_IMPLBIT_Q != 0)-_FP_W_TYPE_SIZE; 146 unsigned exp : _FP_EXPBITS_Q; 147 unsigned sign : 1; 148 #endif 149 } bits; 150 }; 151 152 #define FP_DECL_Q(X) _FP_DECL(2,X) 153 #define FP_UNPACK_RAW_Q(X,val) _FP_UNPACK_RAW_2(Q,X,val) 154 #define FP_UNPACK_RAW_QP(X,val) _FP_UNPACK_RAW_2_P(Q,X,val) 155 #define FP_PACK_RAW_Q(val,X) _FP_PACK_RAW_2(Q,val,X) 156 #define FP_PACK_RAW_QP(val,X) \ 157 do { \ 158 if (!FP_INHIBIT_RESULTS) \ 159 _FP_PACK_RAW_2_P(Q,val,X); \ 160 } while (0) 161 162 #define FP_UNPACK_Q(X,val) \ 163 do { \ 164 _FP_UNPACK_RAW_2(Q,X,val); \ 165 _FP_UNPACK_CANONICAL(Q,2,X); \ 166 } while (0) 167 168 #define FP_UNPACK_QP(X,val) \ 169 do { \ 170 _FP_UNPACK_RAW_2_P(Q,X,val); \ 171 _FP_UNPACK_CANONICAL(Q,2,X); \ 172 } while (0) 173 174 #define FP_PACK_Q(val,X) \ 175 do { \ 176 _FP_PACK_CANONICAL(Q,2,X); \ 177 _FP_PACK_RAW_2(Q,val,X); \ 178 } while (0) 179 180 #define FP_PACK_QP(val,X) \ 181 do { \ 182 _FP_PACK_CANONICAL(Q,2,X); \ 183 if (!FP_INHIBIT_RESULTS) \ 184 _FP_PACK_RAW_2_P(Q,val,X); \ 185 } while (0) 186 187 #define FP_ISSIGNAN_Q(X) _FP_ISSIGNAN(Q,2,X) 188 #define FP_NEG_Q(R,X) _FP_NEG(Q,2,R,X) 189 #define FP_ADD_Q(R,X,Y) _FP_ADD(Q,2,R,X,Y) 190 #define FP_SUB_Q(R,X,Y) _FP_SUB(Q,2,R,X,Y) 191 #define FP_MUL_Q(R,X,Y) _FP_MUL(Q,2,R,X,Y) 192 #define FP_DIV_Q(R,X,Y) _FP_DIV(Q,2,R,X,Y) 193 #define FP_SQRT_Q(R,X) _FP_SQRT(Q,2,R,X) 194 #define _FP_SQRT_MEAT_Q(R,S,T,X,Q) _FP_SQRT_MEAT_2(R,S,T,X,Q) 195 196 #define FP_CMP_Q(r,X,Y,un) _FP_CMP(Q,2,r,X,Y,un) 197 #define FP_CMP_EQ_Q(r,X,Y) _FP_CMP_EQ(Q,2,r,X,Y) 198 199 #define FP_TO_INT_Q(r,X,rsz,rsg) _FP_TO_INT(Q,2,r,X,rsz,rsg) 200 #define FP_TO_INT_ROUND_Q(r,X,rsz,rsg) _FP_TO_INT_ROUND(Q,2,r,X,rsz,rsg) 201 #define FP_FROM_INT_Q(X,r,rs,rt) _FP_FROM_INT(Q,2,X,r,rs,rt) 202 203 #define _FP_FRAC_HIGH_Q(X) _FP_FRAC_HIGH_2(X) 204 #define _FP_FRAC_HIGH_RAW_Q(X) _FP_FRAC_HIGH_2(X) 205 206 #endif /* not _FP_W_TYPE_SIZE < 64 */ 207 208 #endif /* __MATH_EMU_QUAD_H__ */ 209