| /* Software floating-point emulation. |
| Definitions for IEEE Double Precision |
| Copyright (C) 1997-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Richard Henderson (rth@cygnus.com), |
| Jakub Jelinek (jj@ultra.linux.cz), |
| David S. Miller (davem@redhat.com) and |
| Peter Maydell (pmaydell@chiark.greenend.org.uk). |
| |
| 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_DOUBLE_H |
| #define SOFT_FP_DOUBLE_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_D (2 * _FP_W_TYPE_SIZE) |
| # define _FP_FRACTBITS_DW_D (4 * _FP_W_TYPE_SIZE) |
| #else |
| # define _FP_FRACTBITS_D _FP_W_TYPE_SIZE |
| # define _FP_FRACTBITS_DW_D (2 * _FP_W_TYPE_SIZE) |
| #endif |
| |
| #define _FP_FRACBITS_D 53 |
| #define _FP_FRACXBITS_D (_FP_FRACTBITS_D - _FP_FRACBITS_D) |
| #define _FP_WFRACBITS_D (_FP_WORKBITS + _FP_FRACBITS_D) |
| #define _FP_WFRACXBITS_D (_FP_FRACTBITS_D - _FP_WFRACBITS_D) |
| #define _FP_EXPBITS_D 11 |
| #define _FP_EXPBIAS_D 1023 |
| #define _FP_EXPMAX_D 2047 |
| |
| #define _FP_QNANBIT_D \ |
| ((_FP_W_TYPE) 1 << (_FP_FRACBITS_D-2) % _FP_W_TYPE_SIZE) |
| #define _FP_QNANBIT_SH_D \ |
| ((_FP_W_TYPE) 1 << (_FP_FRACBITS_D-2+_FP_WORKBITS) % _FP_W_TYPE_SIZE) |
| #define _FP_IMPLBIT_D \ |
| ((_FP_W_TYPE) 1 << (_FP_FRACBITS_D-1) % _FP_W_TYPE_SIZE) |
| #define _FP_IMPLBIT_SH_D \ |
| ((_FP_W_TYPE) 1 << (_FP_FRACBITS_D-1+_FP_WORKBITS) % _FP_W_TYPE_SIZE) |
| #define _FP_OVERFLOW_D \ |
| ((_FP_W_TYPE) 1 << _FP_WFRACBITS_D % _FP_W_TYPE_SIZE) |
| |
| #define _FP_WFRACBITS_DW_D (2 * _FP_WFRACBITS_D) |
| #define _FP_WFRACXBITS_DW_D (_FP_FRACTBITS_DW_D - _FP_WFRACBITS_DW_D) |
| #define _FP_HIGHBIT_DW_D \ |
| ((_FP_W_TYPE) 1 << (_FP_WFRACBITS_DW_D - 1) % _FP_W_TYPE_SIZE) |
| |
| typedef float DFtype __attribute__ ((mode (DF))); |
| |
| #if _FP_W_TYPE_SIZE < 64 |
| |
| union _FP_UNION_D |
| { |
| DFtype flt; |
| struct _FP_STRUCT_LAYOUT |
| { |
| # if __BYTE_ORDER == __BIG_ENDIAN |
| unsigned sign : 1; |
| unsigned exp : _FP_EXPBITS_D; |
| unsigned frac1 : _FP_FRACBITS_D - (_FP_IMPLBIT_D != 0) - _FP_W_TYPE_SIZE; |
| unsigned frac0 : _FP_W_TYPE_SIZE; |
| # else |
| unsigned frac0 : _FP_W_TYPE_SIZE; |
| unsigned frac1 : _FP_FRACBITS_D - (_FP_IMPLBIT_D != 0) - _FP_W_TYPE_SIZE; |
| unsigned exp : _FP_EXPBITS_D; |
| unsigned sign : 1; |
| # endif |
| } bits __attribute__ ((packed)); |
| }; |
| |
| # define FP_DECL_D(X) _FP_DECL (2, X) |
| # define FP_UNPACK_RAW_D(X, val) _FP_UNPACK_RAW_2 (D, X, (val)) |
| # define FP_UNPACK_RAW_DP(X, val) _FP_UNPACK_RAW_2_P (D, X, (val)) |
| # define FP_PACK_RAW_D(val, X) _FP_PACK_RAW_2 (D, (val), X) |
| # define FP_PACK_RAW_DP(val, X) \ |
| do \ |
| { \ |
| if (!FP_INHIBIT_RESULTS) \ |
| _FP_PACK_RAW_2_P (D, (val), X); \ |
| } \ |
| while (0) |
| |
| # define FP_UNPACK_D(X, val) \ |
| do \ |
| { \ |
| _FP_UNPACK_RAW_2 (D, X, (val)); \ |
| _FP_UNPACK_CANONICAL (D, 2, X); \ |
| } \ |
| while (0) |
| |
| # define FP_UNPACK_DP(X, val) \ |
| do \ |
| { \ |
| _FP_UNPACK_RAW_2_P (D, X, (val)); \ |
| _FP_UNPACK_CANONICAL (D, 2, X); \ |
| } \ |
| while (0) |
| |
| # define FP_UNPACK_SEMIRAW_D(X, val) \ |
| do \ |
| { \ |
| _FP_UNPACK_RAW_2 (D, X, (val)); \ |
| _FP_UNPACK_SEMIRAW (D, 2, X); \ |
| } \ |
| while (0) |
| |
| # define FP_UNPACK_SEMIRAW_DP(X, val) \ |
| do \ |
| { \ |
| _FP_UNPACK_RAW_2_P (D, X, (val)); \ |
| _FP_UNPACK_SEMIRAW (D, 2, X); \ |
| } \ |
| while (0) |
| |
| # define FP_PACK_D(val, X) \ |
| do \ |
| { \ |
| _FP_PACK_CANONICAL (D, 2, X); \ |
| _FP_PACK_RAW_2 (D, (val), X); \ |
| } \ |
| while (0) |
| |
| # define FP_PACK_DP(val, X) \ |
| do \ |
| { \ |
| _FP_PACK_CANONICAL (D, 2, X); \ |
| if (!FP_INHIBIT_RESULTS) \ |
| _FP_PACK_RAW_2_P (D, (val), X); \ |
| } \ |
| while (0) |
| |
| # define FP_PACK_SEMIRAW_D(val, X) \ |
| do \ |
| { \ |
| _FP_PACK_SEMIRAW (D, 2, X); \ |
| _FP_PACK_RAW_2 (D, (val), X); \ |
| } \ |
| while (0) |
| |
| # define FP_PACK_SEMIRAW_DP(val, X) \ |
| do \ |
| { \ |
| _FP_PACK_SEMIRAW (D, 2, X); \ |
| if (!FP_INHIBIT_RESULTS) \ |
| _FP_PACK_RAW_2_P (D, (val), X); \ |
| } \ |
| while (0) |
| |
| # define FP_ISSIGNAN_D(X) _FP_ISSIGNAN (D, 2, X) |
| # define FP_NEG_D(R, X) _FP_NEG (D, 2, R, X) |
| # define FP_ADD_D(R, X, Y) _FP_ADD (D, 2, R, X, Y) |
| # define FP_SUB_D(R, X, Y) _FP_SUB (D, 2, R, X, Y) |
| # define FP_MUL_D(R, X, Y) _FP_MUL (D, 2, R, X, Y) |
| # define FP_DIV_D(R, X, Y) _FP_DIV (D, 2, R, X, Y) |
| # define FP_SQRT_D(R, X) _FP_SQRT (D, 2, R, X) |
| # define _FP_SQRT_MEAT_D(R, S, T, X, Q) _FP_SQRT_MEAT_2 (R, S, T, X, (Q)) |
| # define FP_FMA_D(R, X, Y, Z) _FP_FMA (D, 2, 4, R, X, Y, Z) |
| |
| # define FP_CMP_D(r, X, Y, un, ex) _FP_CMP (D, 2, (r), X, Y, (un), (ex)) |
| # define FP_CMP_EQ_D(r, X, Y, ex) _FP_CMP_EQ (D, 2, (r), X, Y, (ex)) |
| # define FP_CMP_UNORD_D(r, X, Y, ex) _FP_CMP_UNORD (D, 2, (r), X, Y, (ex)) |
| |
| # define FP_TO_INT_D(r, X, rsz, rsg) _FP_TO_INT (D, 2, (r), X, (rsz), (rsg)) |
| # define FP_TO_INT_ROUND_D(r, X, rsz, rsg) \ |
| _FP_TO_INT_ROUND (D, 2, (r), X, (rsz), (rsg)) |
| # define FP_FROM_INT_D(X, r, rs, rt) _FP_FROM_INT (D, 2, X, (r), (rs), rt) |
| |
| # define _FP_FRAC_HIGH_D(X) _FP_FRAC_HIGH_2 (X) |
| # define _FP_FRAC_HIGH_RAW_D(X) _FP_FRAC_HIGH_2 (X) |
| |
| # define _FP_FRAC_HIGH_DW_D(X) _FP_FRAC_HIGH_4 (X) |
| |
| #else |
| |
| union _FP_UNION_D |
| { |
| DFtype flt; |
| struct _FP_STRUCT_LAYOUT |
| { |
| # if __BYTE_ORDER == __BIG_ENDIAN |
| unsigned sign : 1; |
| unsigned exp : _FP_EXPBITS_D; |
| _FP_W_TYPE frac : _FP_FRACBITS_D - (_FP_IMPLBIT_D != 0); |
| # else |
| _FP_W_TYPE frac : _FP_FRACBITS_D - (_FP_IMPLBIT_D != 0); |
| unsigned exp : _FP_EXPBITS_D; |
| unsigned sign : 1; |
| # endif |
| } bits __attribute__ ((packed)); |
| }; |
| |
| # define FP_DECL_D(X) _FP_DECL (1, X) |
| # define FP_UNPACK_RAW_D(X, val) _FP_UNPACK_RAW_1 (D, X, (val)) |
| # define FP_UNPACK_RAW_DP(X, val) _FP_UNPACK_RAW_1_P (D, X, (val)) |
| # define FP_PACK_RAW_D(val, X) _FP_PACK_RAW_1 (D, (val), X) |
| # define FP_PACK_RAW_DP(val, X) \ |
| do \ |
| { \ |
| if (!FP_INHIBIT_RESULTS) \ |
| _FP_PACK_RAW_1_P (D, (val), X); \ |
| } \ |
| while (0) |
| |
| # define FP_UNPACK_D(X, val) \ |
| do \ |
| { \ |
| _FP_UNPACK_RAW_1 (D, X, (val)); \ |
| _FP_UNPACK_CANONICAL (D, 1, X); \ |
| } \ |
| while (0) |
| |
| # define FP_UNPACK_DP(X, val) \ |
| do \ |
| { \ |
| _FP_UNPACK_RAW_1_P (D, X, (val)); \ |
| _FP_UNPACK_CANONICAL (D, 1, X); \ |
| } \ |
| while (0) |
| |
| # define FP_UNPACK_SEMIRAW_D(X, val) \ |
| do \ |
| { \ |
| _FP_UNPACK_RAW_1 (D, X, (val)); \ |
| _FP_UNPACK_SEMIRAW (D, 1, X); \ |
| } \ |
| while (0) |
| |
| # define FP_UNPACK_SEMIRAW_DP(X, val) \ |
| do \ |
| { \ |
| _FP_UNPACK_RAW_1_P (D, X, (val)); \ |
| _FP_UNPACK_SEMIRAW (D, 1, X); \ |
| } \ |
| while (0) |
| |
| # define FP_PACK_D(val, X) \ |
| do \ |
| { \ |
| _FP_PACK_CANONICAL (D, 1, X); \ |
| _FP_PACK_RAW_1 (D, (val), X); \ |
| } \ |
| while (0) |
| |
| # define FP_PACK_DP(val, X) \ |
| do \ |
| { \ |
| _FP_PACK_CANONICAL (D, 1, X); \ |
| if (!FP_INHIBIT_RESULTS) \ |
| _FP_PACK_RAW_1_P (D, (val), X); \ |
| } \ |
| while (0) |
| |
| # define FP_PACK_SEMIRAW_D(val, X) \ |
| do \ |
| { \ |
| _FP_PACK_SEMIRAW (D, 1, X); \ |
| _FP_PACK_RAW_1 (D, (val), X); \ |
| } \ |
| while (0) |
| |
| # define FP_PACK_SEMIRAW_DP(val, X) \ |
| do \ |
| { \ |
| _FP_PACK_SEMIRAW (D, 1, X); \ |
| if (!FP_INHIBIT_RESULTS) \ |
| _FP_PACK_RAW_1_P (D, (val), X); \ |
| } \ |
| while (0) |
| |
| # define FP_ISSIGNAN_D(X) _FP_ISSIGNAN (D, 1, X) |
| # define FP_NEG_D(R, X) _FP_NEG (D, 1, R, X) |
| # define FP_ADD_D(R, X, Y) _FP_ADD (D, 1, R, X, Y) |
| # define FP_SUB_D(R, X, Y) _FP_SUB (D, 1, R, X, Y) |
| # define FP_MUL_D(R, X, Y) _FP_MUL (D, 1, R, X, Y) |
| # define FP_DIV_D(R, X, Y) _FP_DIV (D, 1, R, X, Y) |
| # define FP_SQRT_D(R, X) _FP_SQRT (D, 1, R, X) |
| # define _FP_SQRT_MEAT_D(R, S, T, X, Q) _FP_SQRT_MEAT_1 (R, S, T, X, (Q)) |
| # define FP_FMA_D(R, X, Y, Z) _FP_FMA (D, 1, 2, R, X, Y, Z) |
| |
| /* The implementation of _FP_MUL_D and _FP_DIV_D should be chosen by |
| the target machine. */ |
| |
| # define FP_CMP_D(r, X, Y, un, ex) _FP_CMP (D, 1, (r), X, Y, (un), (ex)) |
| # define FP_CMP_EQ_D(r, X, Y, ex) _FP_CMP_EQ (D, 1, (r), X, Y, (ex)) |
| # define FP_CMP_UNORD_D(r, X, Y, ex) _FP_CMP_UNORD (D, 1, (r), X, Y, (ex)) |
| |
| # define FP_TO_INT_D(r, X, rsz, rsg) _FP_TO_INT (D, 1, (r), X, (rsz), (rsg)) |
| # define FP_TO_INT_ROUND_D(r, X, rsz, rsg) \ |
| _FP_TO_INT_ROUND (D, 1, (r), X, (rsz), (rsg)) |
| # define FP_FROM_INT_D(X, r, rs, rt) _FP_FROM_INT (D, 1, X, (r), (rs), rt) |
| |
| # define _FP_FRAC_HIGH_D(X) _FP_FRAC_HIGH_1 (X) |
| # define _FP_FRAC_HIGH_RAW_D(X) _FP_FRAC_HIGH_1 (X) |
| |
| # define _FP_FRAC_HIGH_DW_D(X) _FP_FRAC_HIGH_2 (X) |
| |
| #endif /* W_TYPE_SIZE < 64 */ |
| |
| #endif /* !SOFT_FP_DOUBLE_H */ |