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Diffstat (limited to 'soft-fp/extended.h')
| -rw-r--r-- | soft-fp/extended.h | 517 |
1 files changed, 0 insertions, 517 deletions
diff --git a/soft-fp/extended.h b/soft-fp/extended.h deleted file mode 100644 index da285a6ecb..0000000000 --- a/soft-fp/extended.h +++ /dev/null @@ -1,517 +0,0 @@ -/* Software floating-point emulation. - Definitions for IEEE Extended Precision. - Copyright (C) 1999-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Jakub Jelinek (jj@ultra.linux.cz). - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - In addition to the permissions in the GNU Lesser General Public - License, the Free Software Foundation gives you unlimited - permission to link the compiled version of this file into - combinations with other programs, and to distribute those - combinations without any restriction coming from the use of this - file. (The Lesser General Public License restrictions do apply in - other respects; for example, they cover modification of the file, - and distribution when not linked into a combine executable.) - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -#ifndef SOFT_FP_EXTENDED_H -#define SOFT_FP_EXTENDED_H 1 - -#if _FP_W_TYPE_SIZE < 32 -# error "Here's a nickel, kid. Go buy yourself a real computer." -#endif - -#if _FP_W_TYPE_SIZE < 64 -# define _FP_FRACTBITS_E (4*_FP_W_TYPE_SIZE) -# define _FP_FRACTBITS_DW_E (8*_FP_W_TYPE_SIZE) -#else -# define _FP_FRACTBITS_E (2*_FP_W_TYPE_SIZE) -# define _FP_FRACTBITS_DW_E (4*_FP_W_TYPE_SIZE) -#endif - -#define _FP_FRACBITS_E 64 -#define _FP_FRACXBITS_E (_FP_FRACTBITS_E - _FP_FRACBITS_E) -#define _FP_WFRACBITS_E (_FP_WORKBITS + _FP_FRACBITS_E) -#define _FP_WFRACXBITS_E (_FP_FRACTBITS_E - _FP_WFRACBITS_E) -#define _FP_EXPBITS_E 15 -#define _FP_EXPBIAS_E 16383 -#define _FP_EXPMAX_E 32767 - -#define _FP_QNANBIT_E \ - ((_FP_W_TYPE) 1 << (_FP_FRACBITS_E-2) % _FP_W_TYPE_SIZE) -#define _FP_QNANBIT_SH_E \ - ((_FP_W_TYPE) 1 << (_FP_FRACBITS_E-2+_FP_WORKBITS) % _FP_W_TYPE_SIZE) -#define _FP_IMPLBIT_E \ - ((_FP_W_TYPE) 1 << (_FP_FRACBITS_E-1) % _FP_W_TYPE_SIZE) -#define _FP_IMPLBIT_SH_E \ - ((_FP_W_TYPE) 1 << (_FP_FRACBITS_E-1+_FP_WORKBITS) % _FP_W_TYPE_SIZE) -#define _FP_OVERFLOW_E \ - ((_FP_W_TYPE) 1 << (_FP_WFRACBITS_E % _FP_W_TYPE_SIZE)) - -#define _FP_WFRACBITS_DW_E (2 * _FP_WFRACBITS_E) -#define _FP_WFRACXBITS_DW_E (_FP_FRACTBITS_DW_E - _FP_WFRACBITS_DW_E) -#define _FP_HIGHBIT_DW_E \ - ((_FP_W_TYPE) 1 << (_FP_WFRACBITS_DW_E - 1) % _FP_W_TYPE_SIZE) - -typedef float XFtype __attribute__ ((mode (XF))); - -#if _FP_W_TYPE_SIZE < 64 - -union _FP_UNION_E -{ - XFtype flt; - struct _FP_STRUCT_LAYOUT - { -# if __BYTE_ORDER == __BIG_ENDIAN - unsigned long pad1 : _FP_W_TYPE_SIZE; - unsigned long pad2 : (_FP_W_TYPE_SIZE - 1 - _FP_EXPBITS_E); - unsigned long sign : 1; - unsigned long exp : _FP_EXPBITS_E; - unsigned long frac1 : _FP_W_TYPE_SIZE; - unsigned long frac0 : _FP_W_TYPE_SIZE; -# else - unsigned long frac0 : _FP_W_TYPE_SIZE; - unsigned long frac1 : _FP_W_TYPE_SIZE; - unsigned exp : _FP_EXPBITS_E; - unsigned sign : 1; -# endif /* not bigendian */ - } bits __attribute__ ((packed)); -}; - - -# define FP_DECL_E(X) _FP_DECL (4, X) - -# define FP_UNPACK_RAW_E(X, val) \ - do \ - { \ - union _FP_UNION_E FP_UNPACK_RAW_E_flo; \ - FP_UNPACK_RAW_E_flo.flt = (val); \ - \ - X##_f[2] = 0; \ - X##_f[3] = 0; \ - X##_f[0] = FP_UNPACK_RAW_E_flo.bits.frac0; \ - X##_f[1] = FP_UNPACK_RAW_E_flo.bits.frac1; \ - X##_f[1] &= ~_FP_IMPLBIT_E; \ - X##_e = FP_UNPACK_RAW_E_flo.bits.exp; \ - X##_s = FP_UNPACK_RAW_E_flo.bits.sign; \ - } \ - while (0) - -# define FP_UNPACK_RAW_EP(X, val) \ - do \ - { \ - union _FP_UNION_E *FP_UNPACK_RAW_EP_flo \ - = (union _FP_UNION_E *) (val); \ - \ - X##_f[2] = 0; \ - X##_f[3] = 0; \ - X##_f[0] = FP_UNPACK_RAW_EP_flo->bits.frac0; \ - X##_f[1] = FP_UNPACK_RAW_EP_flo->bits.frac1; \ - X##_f[1] &= ~_FP_IMPLBIT_E; \ - X##_e = FP_UNPACK_RAW_EP_flo->bits.exp; \ - X##_s = FP_UNPACK_RAW_EP_flo->bits.sign; \ - } \ - while (0) - -# define FP_PACK_RAW_E(val, X) \ - do \ - { \ - union _FP_UNION_E FP_PACK_RAW_E_flo; \ - \ - if (X##_e) \ - X##_f[1] |= _FP_IMPLBIT_E; \ - else \ - X##_f[1] &= ~(_FP_IMPLBIT_E); \ - FP_PACK_RAW_E_flo.bits.frac0 = X##_f[0]; \ - FP_PACK_RAW_E_flo.bits.frac1 = X##_f[1]; \ - FP_PACK_RAW_E_flo.bits.exp = X##_e; \ - FP_PACK_RAW_E_flo.bits.sign = X##_s; \ - \ - (val) = FP_PACK_RAW_E_flo.flt; \ - } \ - while (0) - -# define FP_PACK_RAW_EP(val, X) \ - do \ - { \ - if (!FP_INHIBIT_RESULTS) \ - { \ - union _FP_UNION_E *FP_PACK_RAW_EP_flo \ - = (union _FP_UNION_E *) (val); \ - \ - if (X##_e) \ - X##_f[1] |= _FP_IMPLBIT_E; \ - else \ - X##_f[1] &= ~(_FP_IMPLBIT_E); \ - FP_PACK_RAW_EP_flo->bits.frac0 = X##_f[0]; \ - FP_PACK_RAW_EP_flo->bits.frac1 = X##_f[1]; \ - FP_PACK_RAW_EP_flo->bits.exp = X##_e; \ - FP_PACK_RAW_EP_flo->bits.sign = X##_s; \ - } \ - } \ - while (0) - -# define FP_UNPACK_E(X, val) \ - do \ - { \ - FP_UNPACK_RAW_E (X, (val)); \ - _FP_UNPACK_CANONICAL (E, 4, X); \ - } \ - while (0) - -# define FP_UNPACK_EP(X, val) \ - do \ - { \ - FP_UNPACK_RAW_EP (X, (val)); \ - _FP_UNPACK_CANONICAL (E, 4, X); \ - } \ - while (0) - -# define FP_UNPACK_SEMIRAW_E(X, val) \ - do \ - { \ - FP_UNPACK_RAW_E (X, (val)); \ - _FP_UNPACK_SEMIRAW (E, 4, X); \ - } \ - while (0) - -# define FP_UNPACK_SEMIRAW_EP(X, val) \ - do \ - { \ - FP_UNPACK_RAW_EP (X, (val)); \ - _FP_UNPACK_SEMIRAW (E, 4, X); \ - } \ - while (0) - -# define FP_PACK_E(val, X) \ - do \ - { \ - _FP_PACK_CANONICAL (E, 4, X); \ - FP_PACK_RAW_E ((val), X); \ - } \ - while (0) - -# define FP_PACK_EP(val, X) \ - do \ - { \ - _FP_PACK_CANONICAL (E, 4, X); \ - FP_PACK_RAW_EP ((val), X); \ - } \ - while (0) - -# define FP_PACK_SEMIRAW_E(val, X) \ - do \ - { \ - _FP_PACK_SEMIRAW (E, 4, X); \ - FP_PACK_RAW_E ((val), X); \ - } \ - while (0) - -# define FP_PACK_SEMIRAW_EP(val, X) \ - do \ - { \ - _FP_PACK_SEMIRAW (E, 4, X); \ - FP_PACK_RAW_EP ((val), X); \ - } \ - while (0) - -# define FP_ISSIGNAN_E(X) _FP_ISSIGNAN (E, 4, X) -# define FP_NEG_E(R, X) _FP_NEG (E, 4, R, X) -# define FP_ADD_E(R, X, Y) _FP_ADD (E, 4, R, X, Y) -# define FP_SUB_E(R, X, Y) _FP_SUB (E, 4, R, X, Y) -# define FP_MUL_E(R, X, Y) _FP_MUL (E, 4, R, X, Y) -# define FP_DIV_E(R, X, Y) _FP_DIV (E, 4, R, X, Y) -# define FP_SQRT_E(R, X) _FP_SQRT (E, 4, R, X) -# define FP_FMA_E(R, X, Y, Z) _FP_FMA (E, 4, 8, R, X, Y, Z) - -/* Square root algorithms: - We have just one right now, maybe Newton approximation - should be added for those machines where division is fast. - This has special _E version because standard _4 square - root would not work (it has to start normally with the - second word and not the first), but as we have to do it - anyway, we optimize it by doing most of the calculations - in two UWtype registers instead of four. */ - -# define _FP_SQRT_MEAT_E(R, S, T, X, q) \ - do \ - { \ - (q) = (_FP_W_TYPE) 1 << (_FP_W_TYPE_SIZE - 1); \ - _FP_FRAC_SRL_4 (X, (_FP_WORKBITS)); \ - while (q) \ - { \ - T##_f[1] = S##_f[1] + (q); \ - if (T##_f[1] <= X##_f[1]) \ - { \ - S##_f[1] = T##_f[1] + (q); \ - X##_f[1] -= T##_f[1]; \ - R##_f[1] += (q); \ - } \ - _FP_FRAC_SLL_2 (X, 1); \ - (q) >>= 1; \ - } \ - (q) = (_FP_W_TYPE) 1 << (_FP_W_TYPE_SIZE - 1); \ - while (q) \ - { \ - T##_f[0] = S##_f[0] + (q); \ - T##_f[1] = S##_f[1]; \ - if (T##_f[1] < X##_f[1] \ - || (T##_f[1] == X##_f[1] \ - && T##_f[0] <= X##_f[0])) \ - { \ - S##_f[0] = T##_f[0] + (q); \ - S##_f[1] += (T##_f[0] > S##_f[0]); \ - _FP_FRAC_DEC_2 (X, T); \ - R##_f[0] += (q); \ - } \ - _FP_FRAC_SLL_2 (X, 1); \ - (q) >>= 1; \ - } \ - _FP_FRAC_SLL_4 (R, (_FP_WORKBITS)); \ - if (X##_f[0] | X##_f[1]) \ - { \ - if (S##_f[1] < X##_f[1] \ - || (S##_f[1] == X##_f[1] \ - && S##_f[0] < X##_f[0])) \ - R##_f[0] |= _FP_WORK_ROUND; \ - R##_f[0] |= _FP_WORK_STICKY; \ - } \ - } \ - while (0) - -# define FP_CMP_E(r, X, Y, un, ex) _FP_CMP (E, 4, (r), X, Y, (un), (ex)) -# define FP_CMP_EQ_E(r, X, Y, ex) _FP_CMP_EQ (E, 4, (r), X, Y, (ex)) -# define FP_CMP_UNORD_E(r, X, Y, ex) _FP_CMP_UNORD (E, 4, (r), X, Y, (ex)) - -# define FP_TO_INT_E(r, X, rsz, rsg) _FP_TO_INT (E, 4, (r), X, (rsz), (rsg)) -# define FP_TO_INT_ROUND_E(r, X, rsz, rsg) \ - _FP_TO_INT_ROUND (E, 4, (r), X, (rsz), (rsg)) -# define FP_FROM_INT_E(X, r, rs, rt) _FP_FROM_INT (E, 4, X, (r), (rs), rt) - -# define _FP_FRAC_HIGH_E(X) (X##_f[2]) -# define _FP_FRAC_HIGH_RAW_E(X) (X##_f[1]) - -# define _FP_FRAC_HIGH_DW_E(X) (X##_f[4]) - -#else /* not _FP_W_TYPE_SIZE < 64 */ -union _FP_UNION_E -{ - XFtype flt; - struct _FP_STRUCT_LAYOUT - { -# if __BYTE_ORDER == __BIG_ENDIAN - _FP_W_TYPE pad : (_FP_W_TYPE_SIZE - 1 - _FP_EXPBITS_E); - unsigned sign : 1; - unsigned exp : _FP_EXPBITS_E; - _FP_W_TYPE frac : _FP_W_TYPE_SIZE; -# else - _FP_W_TYPE frac : _FP_W_TYPE_SIZE; - unsigned exp : _FP_EXPBITS_E; - unsigned sign : 1; -# endif - } bits; -}; - -# define FP_DECL_E(X) _FP_DECL (2, X) - -# define FP_UNPACK_RAW_E(X, val) \ - do \ - { \ - union _FP_UNION_E FP_UNPACK_RAW_E_flo; \ - FP_UNPACK_RAW_E_flo.flt = (val); \ - \ - X##_f0 = FP_UNPACK_RAW_E_flo.bits.frac; \ - X##_f0 &= ~_FP_IMPLBIT_E; \ - X##_f1 = 0; \ - X##_e = FP_UNPACK_RAW_E_flo.bits.exp; \ - X##_s = FP_UNPACK_RAW_E_flo.bits.sign; \ - } \ - while (0) - -# define FP_UNPACK_RAW_EP(X, val) \ - do \ - { \ - union _FP_UNION_E *FP_UNPACK_RAW_EP_flo \ - = (union _FP_UNION_E *) (val); \ - \ - X##_f0 = FP_UNPACK_RAW_EP_flo->bits.frac; \ - X##_f0 &= ~_FP_IMPLBIT_E; \ - X##_f1 = 0; \ - X##_e = FP_UNPACK_RAW_EP_flo->bits.exp; \ - X##_s = FP_UNPACK_RAW_EP_flo->bits.sign; \ - } \ - while (0) - -# define FP_PACK_RAW_E(val, X) \ - do \ - { \ - union _FP_UNION_E FP_PACK_RAW_E_flo; \ - \ - if (X##_e) \ - X##_f0 |= _FP_IMPLBIT_E; \ - else \ - X##_f0 &= ~(_FP_IMPLBIT_E); \ - FP_PACK_RAW_E_flo.bits.frac = X##_f0; \ - FP_PACK_RAW_E_flo.bits.exp = X##_e; \ - FP_PACK_RAW_E_flo.bits.sign = X##_s; \ - \ - (val) = FP_PACK_RAW_E_flo.flt; \ - } \ - while (0) - -# define FP_PACK_RAW_EP(fs, val, X) \ - do \ - { \ - if (!FP_INHIBIT_RESULTS) \ - { \ - union _FP_UNION_E *FP_PACK_RAW_EP_flo \ - = (union _FP_UNION_E *) (val); \ - \ - if (X##_e) \ - X##_f0 |= _FP_IMPLBIT_E; \ - else \ - X##_f0 &= ~(_FP_IMPLBIT_E); \ - FP_PACK_RAW_EP_flo->bits.frac = X##_f0; \ - FP_PACK_RAW_EP_flo->bits.exp = X##_e; \ - FP_PACK_RAW_EP_flo->bits.sign = X##_s; \ - } \ - } \ - while (0) - - -# define FP_UNPACK_E(X, val) \ - do \ - { \ - FP_UNPACK_RAW_E (X, (val)); \ - _FP_UNPACK_CANONICAL (E, 2, X); \ - } \ - while (0) - -# define FP_UNPACK_EP(X, val) \ - do \ - { \ - FP_UNPACK_RAW_EP (X, (val)); \ - _FP_UNPACK_CANONICAL (E, 2, X); \ - } \ - while (0) - -# define FP_UNPACK_SEMIRAW_E(X, val) \ - do \ - { \ - FP_UNPACK_RAW_E (X, (val)); \ - _FP_UNPACK_SEMIRAW (E, 2, X); \ - } \ - while (0) - -# define FP_UNPACK_SEMIRAW_EP(X, val) \ - do \ - { \ - FP_UNPACK_RAW_EP (X, (val)); \ - _FP_UNPACK_SEMIRAW (E, 2, X); \ - } \ - while (0) - -# define FP_PACK_E(val, X) \ - do \ - { \ - _FP_PACK_CANONICAL (E, 2, X); \ - FP_PACK_RAW_E ((val), X); \ - } \ - while (0) - -# define FP_PACK_EP(val, X) \ - do \ - { \ - _FP_PACK_CANONICAL (E, 2, X); \ - FP_PACK_RAW_EP ((val), X); \ - } \ - while (0) - -# define FP_PACK_SEMIRAW_E(val, X) \ - do \ - { \ - _FP_PACK_SEMIRAW (E, 2, X); \ - FP_PACK_RAW_E ((val), X); \ - } \ - while (0) - -# define FP_PACK_SEMIRAW_EP(val, X) \ - do \ - { \ - _FP_PACK_SEMIRAW (E, 2, X); \ - FP_PACK_RAW_EP ((val), X); \ - } \ - while (0) - -# define FP_ISSIGNAN_E(X) _FP_ISSIGNAN (E, 2, X) -# define FP_NEG_E(R, X) _FP_NEG (E, 2, R, X) -# define FP_ADD_E(R, X, Y) _FP_ADD (E, 2, R, X, Y) -# define FP_SUB_E(R, X, Y) _FP_SUB (E, 2, R, X, Y) -# define FP_MUL_E(R, X, Y) _FP_MUL (E, 2, R, X, Y) -# define FP_DIV_E(R, X, Y) _FP_DIV (E, 2, R, X, Y) -# define FP_SQRT_E(R, X) _FP_SQRT (E, 2, R, X) -# define FP_FMA_E(R, X, Y, Z) _FP_FMA (E, 2, 4, R, X, Y, Z) - -/* Square root algorithms: - We have just one right now, maybe Newton approximation - should be added for those machines where division is fast. - We optimize it by doing most of the calculations - in one UWtype registers instead of two, although we don't - have to. */ -# define _FP_SQRT_MEAT_E(R, S, T, X, q) \ - do \ - { \ - (q) = (_FP_W_TYPE) 1 << (_FP_W_TYPE_SIZE - 1); \ - _FP_FRAC_SRL_2 (X, (_FP_WORKBITS)); \ - while (q) \ - { \ - T##_f0 = S##_f0 + (q); \ - if (T##_f0 <= X##_f0) \ - { \ - S##_f0 = T##_f0 + (q); \ - X##_f0 -= T##_f0; \ - R##_f0 += (q); \ - } \ - _FP_FRAC_SLL_1 (X, 1); \ - (q) >>= 1; \ - } \ - _FP_FRAC_SLL_2 (R, (_FP_WORKBITS)); \ - if (X##_f0) \ - { \ - if (S##_f0 < X##_f0) \ - R##_f0 |= _FP_WORK_ROUND; \ - R##_f0 |= _FP_WORK_STICKY; \ - } \ - } \ - while (0) - -# define FP_CMP_E(r, X, Y, un, ex) _FP_CMP (E, 2, (r), X, Y, (un), (ex)) -# define FP_CMP_EQ_E(r, X, Y, ex) _FP_CMP_EQ (E, 2, (r), X, Y, (ex)) -# define FP_CMP_UNORD_E(r, X, Y, ex) _FP_CMP_UNORD (E, 2, (r), X, Y, (ex)) - -# define FP_TO_INT_E(r, X, rsz, rsg) _FP_TO_INT (E, 2, (r), X, (rsz), (rsg)) -# define FP_TO_INT_ROUND_E(r, X, rsz, rsg) \ - _FP_TO_INT_ROUND (E, 2, (r), X, (rsz), (rsg)) -# define FP_FROM_INT_E(X, r, rs, rt) _FP_FROM_INT (E, 2, X, (r), (rs), rt) - -# define _FP_FRAC_HIGH_E(X) (X##_f1) -# define _FP_FRAC_HIGH_RAW_E(X) (X##_f0) - -# define _FP_FRAC_HIGH_DW_E(X) (X##_f[2]) - -#endif /* not _FP_W_TYPE_SIZE < 64 */ - -#endif /* !SOFT_FP_EXTENDED_H */ |