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Diffstat (limited to 'REORG.TODO/soft-fp/double.h')
| -rw-r--r-- | REORG.TODO/soft-fp/double.h | 323 |
1 files changed, 323 insertions, 0 deletions
diff --git a/REORG.TODO/soft-fp/double.h b/REORG.TODO/soft-fp/double.h new file mode 100644 index 0000000000..055d9da6bc --- /dev/null +++ b/REORG.TODO/soft-fp/double.h @@ -0,0 +1,323 @@ +/* Software floating-point emulation. + Definitions for IEEE Double Precision + Copyright (C) 1997-2017 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 */ |