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Diffstat (limited to 'REORG.TODO/soft-fp/quad.h')
| -rw-r--r-- | REORG.TODO/soft-fp/quad.h | 330 |
1 files changed, 330 insertions, 0 deletions
diff --git a/REORG.TODO/soft-fp/quad.h b/REORG.TODO/soft-fp/quad.h new file mode 100644 index 0000000000..388601fd81 --- /dev/null +++ b/REORG.TODO/soft-fp/quad.h @@ -0,0 +1,330 @@ +/* Software floating-point emulation. + Definitions for IEEE Quad 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_QUAD_H +#define SOFT_FP_QUAD_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_Q (4*_FP_W_TYPE_SIZE) +# define _FP_FRACTBITS_DW_Q (8*_FP_W_TYPE_SIZE) +#else +# define _FP_FRACTBITS_Q (2*_FP_W_TYPE_SIZE) +# define _FP_FRACTBITS_DW_Q (4*_FP_W_TYPE_SIZE) +#endif + +#define _FP_FRACBITS_Q 113 +#define _FP_FRACXBITS_Q (_FP_FRACTBITS_Q - _FP_FRACBITS_Q) +#define _FP_WFRACBITS_Q (_FP_WORKBITS + _FP_FRACBITS_Q) +#define _FP_WFRACXBITS_Q (_FP_FRACTBITS_Q - _FP_WFRACBITS_Q) +#define _FP_EXPBITS_Q 15 +#define _FP_EXPBIAS_Q 16383 +#define _FP_EXPMAX_Q 32767 + +#define _FP_QNANBIT_Q \ + ((_FP_W_TYPE) 1 << (_FP_FRACBITS_Q-2) % _FP_W_TYPE_SIZE) +#define _FP_QNANBIT_SH_Q \ + ((_FP_W_TYPE) 1 << (_FP_FRACBITS_Q-2+_FP_WORKBITS) % _FP_W_TYPE_SIZE) +#define _FP_IMPLBIT_Q \ + ((_FP_W_TYPE) 1 << (_FP_FRACBITS_Q-1) % _FP_W_TYPE_SIZE) +#define _FP_IMPLBIT_SH_Q \ + ((_FP_W_TYPE) 1 << (_FP_FRACBITS_Q-1+_FP_WORKBITS) % _FP_W_TYPE_SIZE) +#define _FP_OVERFLOW_Q \ + ((_FP_W_TYPE) 1 << (_FP_WFRACBITS_Q % _FP_W_TYPE_SIZE)) + +#define _FP_WFRACBITS_DW_Q (2 * _FP_WFRACBITS_Q) +#define _FP_WFRACXBITS_DW_Q (_FP_FRACTBITS_DW_Q - _FP_WFRACBITS_DW_Q) +#define _FP_HIGHBIT_DW_Q \ + ((_FP_W_TYPE) 1 << (_FP_WFRACBITS_DW_Q - 1) % _FP_W_TYPE_SIZE) + +typedef float TFtype __attribute__ ((mode (TF))); + +#if _FP_W_TYPE_SIZE < 64 + +union _FP_UNION_Q +{ + TFtype flt; + struct _FP_STRUCT_LAYOUT + { +# if __BYTE_ORDER == __BIG_ENDIAN + unsigned sign : 1; + unsigned exp : _FP_EXPBITS_Q; + unsigned long frac3 : _FP_FRACBITS_Q - (_FP_IMPLBIT_Q != 0)-(_FP_W_TYPE_SIZE * 3); + unsigned long frac2 : _FP_W_TYPE_SIZE; + 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 long frac2 : _FP_W_TYPE_SIZE; + unsigned long frac3 : _FP_FRACBITS_Q - (_FP_IMPLBIT_Q != 0)-(_FP_W_TYPE_SIZE * 3); + unsigned exp : _FP_EXPBITS_Q; + unsigned sign : 1; +# endif /* not bigendian */ + } bits __attribute__ ((packed)); +}; + + +# define FP_DECL_Q(X) _FP_DECL (4, X) +# define FP_UNPACK_RAW_Q(X, val) _FP_UNPACK_RAW_4 (Q, X, (val)) +# define FP_UNPACK_RAW_QP(X, val) _FP_UNPACK_RAW_4_P (Q, X, (val)) +# define FP_PACK_RAW_Q(val, X) _FP_PACK_RAW_4 (Q, (val), X) +# define FP_PACK_RAW_QP(val, X) \ + do \ + { \ + if (!FP_INHIBIT_RESULTS) \ + _FP_PACK_RAW_4_P (Q, (val), X); \ + } \ + while (0) + +# define FP_UNPACK_Q(X, val) \ + do \ + { \ + _FP_UNPACK_RAW_4 (Q, X, (val)); \ + _FP_UNPACK_CANONICAL (Q, 4, X); \ + } \ + while (0) + +# define FP_UNPACK_QP(X, val) \ + do \ + { \ + _FP_UNPACK_RAW_4_P (Q, X, (val)); \ + _FP_UNPACK_CANONICAL (Q, 4, X); \ + } \ + while (0) + +# define FP_UNPACK_SEMIRAW_Q(X, val) \ + do \ + { \ + _FP_UNPACK_RAW_4 (Q, X, (val)); \ + _FP_UNPACK_SEMIRAW (Q, 4, X); \ + } \ + while (0) + +# define FP_UNPACK_SEMIRAW_QP(X, val) \ + do \ + { \ + _FP_UNPACK_RAW_4_P (Q, X, (val)); \ + _FP_UNPACK_SEMIRAW (Q, 4, X); \ + } \ + while (0) + +# define FP_PACK_Q(val, X) \ + do \ + { \ + _FP_PACK_CANONICAL (Q, 4, X); \ + _FP_PACK_RAW_4 (Q, (val), X); \ + } \ + while (0) + +# define FP_PACK_QP(val, X) \ + do \ + { \ + _FP_PACK_CANONICAL (Q, 4, X); \ + if (!FP_INHIBIT_RESULTS) \ + _FP_PACK_RAW_4_P (Q, (val), X); \ + } \ + while (0) + +# define FP_PACK_SEMIRAW_Q(val, X) \ + do \ + { \ + _FP_PACK_SEMIRAW (Q, 4, X); \ + _FP_PACK_RAW_4 (Q, (val), X); \ + } \ + while (0) + +# define FP_PACK_SEMIRAW_QP(val, X) \ + do \ + { \ + _FP_PACK_SEMIRAW (Q, 4, X); \ + if (!FP_INHIBIT_RESULTS) \ + _FP_PACK_RAW_4_P (Q, (val), X); \ + } \ + while (0) + +# define FP_ISSIGNAN_Q(X) _FP_ISSIGNAN (Q, 4, X) +# define FP_NEG_Q(R, X) _FP_NEG (Q, 4, R, X) +# define FP_ADD_Q(R, X, Y) _FP_ADD (Q, 4, R, X, Y) +# define FP_SUB_Q(R, X, Y) _FP_SUB (Q, 4, R, X, Y) +# define FP_MUL_Q(R, X, Y) _FP_MUL (Q, 4, R, X, Y) +# define FP_DIV_Q(R, X, Y) _FP_DIV (Q, 4, R, X, Y) +# define FP_SQRT_Q(R, X) _FP_SQRT (Q, 4, R, X) +# define _FP_SQRT_MEAT_Q(R, S, T, X, Q) _FP_SQRT_MEAT_4 (R, S, T, X, (Q)) +# define FP_FMA_Q(R, X, Y, Z) _FP_FMA (Q, 4, 8, R, X, Y, Z) + +# define FP_CMP_Q(r, X, Y, un, ex) _FP_CMP (Q, 4, (r), X, Y, (un), (ex)) +# define FP_CMP_EQ_Q(r, X, Y, ex) _FP_CMP_EQ (Q, 4, (r), X, Y, (ex)) +# define FP_CMP_UNORD_Q(r, X, Y, ex) _FP_CMP_UNORD (Q, 4, (r), X, Y, (ex)) + +# define FP_TO_INT_Q(r, X, rsz, rsg) _FP_TO_INT (Q, 4, (r), X, (rsz), (rsg)) +# define FP_TO_INT_ROUND_Q(r, X, rsz, rsg) \ + _FP_TO_INT_ROUND (Q, 4, (r), X, (rsz), (rsg)) +# define FP_FROM_INT_Q(X, r, rs, rt) _FP_FROM_INT (Q, 4, X, (r), (rs), rt) + +# define _FP_FRAC_HIGH_Q(X) _FP_FRAC_HIGH_4 (X) +# define _FP_FRAC_HIGH_RAW_Q(X) _FP_FRAC_HIGH_4 (X) + +# define _FP_FRAC_HIGH_DW_Q(X) _FP_FRAC_HIGH_8 (X) + +#else /* not _FP_W_TYPE_SIZE < 64 */ +union _FP_UNION_Q +{ + TFtype flt /* __attribute__ ((mode (TF))) */ ; + struct _FP_STRUCT_LAYOUT + { + _FP_W_TYPE a, b; + } longs; + struct _FP_STRUCT_LAYOUT + { +# if __BYTE_ORDER == __BIG_ENDIAN + unsigned sign : 1; + unsigned exp : _FP_EXPBITS_Q; + _FP_W_TYPE frac1 : _FP_FRACBITS_Q - (_FP_IMPLBIT_Q != 0) - _FP_W_TYPE_SIZE; + _FP_W_TYPE frac0 : _FP_W_TYPE_SIZE; +# else + _FP_W_TYPE frac0 : _FP_W_TYPE_SIZE; + _FP_W_TYPE frac1 : _FP_FRACBITS_Q - (_FP_IMPLBIT_Q != 0) - _FP_W_TYPE_SIZE; + unsigned exp : _FP_EXPBITS_Q; + unsigned sign : 1; +# endif + } bits; +}; + +# define FP_DECL_Q(X) _FP_DECL (2, X) +# define FP_UNPACK_RAW_Q(X, val) _FP_UNPACK_RAW_2 (Q, X, (val)) +# define FP_UNPACK_RAW_QP(X, val) _FP_UNPACK_RAW_2_P (Q, X, (val)) +# define FP_PACK_RAW_Q(val, X) _FP_PACK_RAW_2 (Q, (val), X) +# define FP_PACK_RAW_QP(val, X) \ + do \ + { \ + if (!FP_INHIBIT_RESULTS) \ + _FP_PACK_RAW_2_P (Q, (val), X); \ + } \ + while (0) + +# define FP_UNPACK_Q(X, val) \ + do \ + { \ + _FP_UNPACK_RAW_2 (Q, X, (val)); \ + _FP_UNPACK_CANONICAL (Q, 2, X); \ + } \ + while (0) + +# define FP_UNPACK_QP(X, val) \ + do \ + { \ + _FP_UNPACK_RAW_2_P (Q, X, (val)); \ + _FP_UNPACK_CANONICAL (Q, 2, X); \ + } \ + while (0) + +# define FP_UNPACK_SEMIRAW_Q(X, val) \ + do \ + { \ + _FP_UNPACK_RAW_2 (Q, X, (val)); \ + _FP_UNPACK_SEMIRAW (Q, 2, X); \ + } \ + while (0) + +# define FP_UNPACK_SEMIRAW_QP(X, val) \ + do \ + { \ + _FP_UNPACK_RAW_2_P (Q, X, (val)); \ + _FP_UNPACK_SEMIRAW (Q, 2, X); \ + } \ + while (0) + +# define FP_PACK_Q(val, X) \ + do \ + { \ + _FP_PACK_CANONICAL (Q, 2, X); \ + _FP_PACK_RAW_2 (Q, (val), X); \ + } \ + while (0) + +# define FP_PACK_QP(val, X) \ + do \ + { \ + _FP_PACK_CANONICAL (Q, 2, X); \ + if (!FP_INHIBIT_RESULTS) \ + _FP_PACK_RAW_2_P (Q, (val), X); \ + } \ + while (0) + +# define FP_PACK_SEMIRAW_Q(val, X) \ + do \ + { \ + _FP_PACK_SEMIRAW (Q, 2, X); \ + _FP_PACK_RAW_2 (Q, (val), X); \ + } \ + while (0) + +# define FP_PACK_SEMIRAW_QP(val, X) \ + do \ + { \ + _FP_PACK_SEMIRAW (Q, 2, X); \ + if (!FP_INHIBIT_RESULTS) \ + _FP_PACK_RAW_2_P (Q, (val), X); \ + } \ + while (0) + +# define FP_ISSIGNAN_Q(X) _FP_ISSIGNAN (Q, 2, X) +# define FP_NEG_Q(R, X) _FP_NEG (Q, 2, R, X) +# define FP_ADD_Q(R, X, Y) _FP_ADD (Q, 2, R, X, Y) +# define FP_SUB_Q(R, X, Y) _FP_SUB (Q, 2, R, X, Y) +# define FP_MUL_Q(R, X, Y) _FP_MUL (Q, 2, R, X, Y) +# define FP_DIV_Q(R, X, Y) _FP_DIV (Q, 2, R, X, Y) +# define FP_SQRT_Q(R, X) _FP_SQRT (Q, 2, R, X) +# define _FP_SQRT_MEAT_Q(R, S, T, X, Q) _FP_SQRT_MEAT_2 (R, S, T, X, (Q)) +# define FP_FMA_Q(R, X, Y, Z) _FP_FMA (Q, 2, 4, R, X, Y, Z) + +# define FP_CMP_Q(r, X, Y, un, ex) _FP_CMP (Q, 2, (r), X, Y, (un), (ex)) +# define FP_CMP_EQ_Q(r, X, Y, ex) _FP_CMP_EQ (Q, 2, (r), X, Y, (ex)) +# define FP_CMP_UNORD_Q(r, X, Y, ex) _FP_CMP_UNORD (Q, 2, (r), X, Y, (ex)) + +# define FP_TO_INT_Q(r, X, rsz, rsg) _FP_TO_INT (Q, 2, (r), X, (rsz), (rsg)) +# define FP_TO_INT_ROUND_Q(r, X, rsz, rsg) \ + _FP_TO_INT_ROUND (Q, 2, (r), X, (rsz), (rsg)) +# define FP_FROM_INT_Q(X, r, rs, rt) _FP_FROM_INT (Q, 2, X, (r), (rs), rt) + +# define _FP_FRAC_HIGH_Q(X) _FP_FRAC_HIGH_2 (X) +# define _FP_FRAC_HIGH_RAW_Q(X) _FP_FRAC_HIGH_2 (X) + +# define _FP_FRAC_HIGH_DW_Q(X) _FP_FRAC_HIGH_4 (X) + +#endif /* not _FP_W_TYPE_SIZE < 64 */ + +#endif /* !SOFT_FP_QUAD_H */ |