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Diffstat (limited to 'REORG.TODO/soft-fp/single.h')
| -rw-r--r-- | REORG.TODO/soft-fp/single.h | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/REORG.TODO/soft-fp/single.h b/REORG.TODO/soft-fp/single.h new file mode 100644 index 0000000000..75ade9fbe5 --- /dev/null +++ b/REORG.TODO/soft-fp/single.h @@ -0,0 +1,199 @@ +/* Software floating-point emulation. + Definitions for IEEE Single 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_SINGLE_H +#define SOFT_FP_SINGLE_H 1 + +#if _FP_W_TYPE_SIZE < 32 +# error "Here's a nickel kid. Go buy yourself a real computer." +#endif + +#define _FP_FRACTBITS_S _FP_W_TYPE_SIZE + +#if _FP_W_TYPE_SIZE < 64 +# define _FP_FRACTBITS_DW_S (2 * _FP_W_TYPE_SIZE) +#else +# define _FP_FRACTBITS_DW_S _FP_W_TYPE_SIZE +#endif + +#define _FP_FRACBITS_S 24 +#define _FP_FRACXBITS_S (_FP_FRACTBITS_S - _FP_FRACBITS_S) +#define _FP_WFRACBITS_S (_FP_WORKBITS + _FP_FRACBITS_S) +#define _FP_WFRACXBITS_S (_FP_FRACTBITS_S - _FP_WFRACBITS_S) +#define _FP_EXPBITS_S 8 +#define _FP_EXPBIAS_S 127 +#define _FP_EXPMAX_S 255 +#define _FP_QNANBIT_S ((_FP_W_TYPE) 1 << (_FP_FRACBITS_S-2)) +#define _FP_QNANBIT_SH_S ((_FP_W_TYPE) 1 << (_FP_FRACBITS_S-2+_FP_WORKBITS)) +#define _FP_IMPLBIT_S ((_FP_W_TYPE) 1 << (_FP_FRACBITS_S-1)) +#define _FP_IMPLBIT_SH_S ((_FP_W_TYPE) 1 << (_FP_FRACBITS_S-1+_FP_WORKBITS)) +#define _FP_OVERFLOW_S ((_FP_W_TYPE) 1 << (_FP_WFRACBITS_S)) + +#define _FP_WFRACBITS_DW_S (2 * _FP_WFRACBITS_S) +#define _FP_WFRACXBITS_DW_S (_FP_FRACTBITS_DW_S - _FP_WFRACBITS_DW_S) +#define _FP_HIGHBIT_DW_S \ + ((_FP_W_TYPE) 1 << (_FP_WFRACBITS_DW_S - 1) % _FP_W_TYPE_SIZE) + +/* The implementation of _FP_MUL_MEAT_S and _FP_DIV_MEAT_S should be + chosen by the target machine. */ + +typedef float SFtype __attribute__ ((mode (SF))); + +union _FP_UNION_S +{ + SFtype flt; + struct _FP_STRUCT_LAYOUT + { +#if __BYTE_ORDER == __BIG_ENDIAN + unsigned sign : 1; + unsigned exp : _FP_EXPBITS_S; + unsigned frac : _FP_FRACBITS_S - (_FP_IMPLBIT_S != 0); +#else + unsigned frac : _FP_FRACBITS_S - (_FP_IMPLBIT_S != 0); + unsigned exp : _FP_EXPBITS_S; + unsigned sign : 1; +#endif + } bits __attribute__ ((packed)); +}; + +#define FP_DECL_S(X) _FP_DECL (1, X) +#define FP_UNPACK_RAW_S(X, val) _FP_UNPACK_RAW_1 (S, X, (val)) +#define FP_UNPACK_RAW_SP(X, val) _FP_UNPACK_RAW_1_P (S, X, (val)) +#define FP_PACK_RAW_S(val, X) _FP_PACK_RAW_1 (S, (val), X) +#define FP_PACK_RAW_SP(val, X) \ + do \ + { \ + if (!FP_INHIBIT_RESULTS) \ + _FP_PACK_RAW_1_P (S, (val), X); \ + } \ + while (0) + +#define FP_UNPACK_S(X, val) \ + do \ + { \ + _FP_UNPACK_RAW_1 (S, X, (val)); \ + _FP_UNPACK_CANONICAL (S, 1, X); \ + } \ + while (0) + +#define FP_UNPACK_SP(X, val) \ + do \ + { \ + _FP_UNPACK_RAW_1_P (S, X, (val)); \ + _FP_UNPACK_CANONICAL (S, 1, X); \ + } \ + while (0) + +#define FP_UNPACK_SEMIRAW_S(X, val) \ + do \ + { \ + _FP_UNPACK_RAW_1 (S, X, (val)); \ + _FP_UNPACK_SEMIRAW (S, 1, X); \ + } \ + while (0) + +#define FP_UNPACK_SEMIRAW_SP(X, val) \ + do \ + { \ + _FP_UNPACK_RAW_1_P (S, X, (val)); \ + _FP_UNPACK_SEMIRAW (S, 1, X); \ + } \ + while (0) + +#define FP_PACK_S(val, X) \ + do \ + { \ + _FP_PACK_CANONICAL (S, 1, X); \ + _FP_PACK_RAW_1 (S, (val), X); \ + } \ + while (0) + +#define FP_PACK_SP(val, X) \ + do \ + { \ + _FP_PACK_CANONICAL (S, 1, X); \ + if (!FP_INHIBIT_RESULTS) \ + _FP_PACK_RAW_1_P (S, (val), X); \ + } \ + while (0) + +#define FP_PACK_SEMIRAW_S(val, X) \ + do \ + { \ + _FP_PACK_SEMIRAW (S, 1, X); \ + _FP_PACK_RAW_1 (S, (val), X); \ + } \ + while (0) + +#define FP_PACK_SEMIRAW_SP(val, X) \ + do \ + { \ + _FP_PACK_SEMIRAW (S, 1, X); \ + if (!FP_INHIBIT_RESULTS) \ + _FP_PACK_RAW_1_P (S, (val), X); \ + } \ + while (0) + +#define FP_ISSIGNAN_S(X) _FP_ISSIGNAN (S, 1, X) +#define FP_NEG_S(R, X) _FP_NEG (S, 1, R, X) +#define FP_ADD_S(R, X, Y) _FP_ADD (S, 1, R, X, Y) +#define FP_SUB_S(R, X, Y) _FP_SUB (S, 1, R, X, Y) +#define FP_MUL_S(R, X, Y) _FP_MUL (S, 1, R, X, Y) +#define FP_DIV_S(R, X, Y) _FP_DIV (S, 1, R, X, Y) +#define FP_SQRT_S(R, X) _FP_SQRT (S, 1, R, X) +#define _FP_SQRT_MEAT_S(R, S, T, X, Q) _FP_SQRT_MEAT_1 (R, S, T, X, (Q)) + +#if _FP_W_TYPE_SIZE < 64 +# define FP_FMA_S(R, X, Y, Z) _FP_FMA (S, 1, 2, R, X, Y, Z) +#else +# define FP_FMA_S(R, X, Y, Z) _FP_FMA (S, 1, 1, R, X, Y, Z) +#endif + +#define FP_CMP_S(r, X, Y, un, ex) _FP_CMP (S, 1, (r), X, Y, (un), (ex)) +#define FP_CMP_EQ_S(r, X, Y, ex) _FP_CMP_EQ (S, 1, (r), X, Y, (ex)) +#define FP_CMP_UNORD_S(r, X, Y, ex) _FP_CMP_UNORD (S, 1, (r), X, Y, (ex)) + +#define FP_TO_INT_S(r, X, rsz, rsg) _FP_TO_INT (S, 1, (r), X, (rsz), (rsg)) +#define FP_TO_INT_ROUND_S(r, X, rsz, rsg) \ + _FP_TO_INT_ROUND (S, 1, (r), X, (rsz), (rsg)) +#define FP_FROM_INT_S(X, r, rs, rt) _FP_FROM_INT (S, 1, X, (r), (rs), rt) + +#define _FP_FRAC_HIGH_S(X) _FP_FRAC_HIGH_1 (X) +#define _FP_FRAC_HIGH_RAW_S(X) _FP_FRAC_HIGH_1 (X) + +#if _FP_W_TYPE_SIZE < 64 +# define _FP_FRAC_HIGH_DW_S(X) _FP_FRAC_HIGH_2 (X) +#else +# define _FP_FRAC_HIGH_DW_S(X) _FP_FRAC_HIGH_1 (X) +#endif + +#endif /* !SOFT_FP_SINGLE_H */ |