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soft-fp: Add brain format support
In https://gcc.gnu.org/r13-3292 I've added brain format support (std::bfloat16_t) on the GCC side, but as glibc has the master copy of soft-fp, the following patch adds the files from that commit and from https://gcc.gnu.org/r13-6598 and https://gcc.gnu.org/r13-6622 The files are not used by glibc right now.
This commit is contained in:
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172
soft-fp/brain.h
Normal file
172
soft-fp/brain.h
Normal file
@ -0,0 +1,172 @@
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/* Software floating-point emulation.
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Definitions for Brain Floating Point format (bfloat16).
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Copyright (C) 1997-2024 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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|
License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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|
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|
In addition to the permissions in the GNU Lesser General Public
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|
License, the Free Software Foundation gives you unlimited
|
||||||
|
permission to link the compiled version of this file into
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||||||
|
combinations with other programs, and to distribute those
|
||||||
|
combinations without any restriction coming from the use of this
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||||||
|
file. (The Lesser General Public License restrictions do apply in
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|
other respects; for example, they cover modification of the file,
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|
and distribution when not linked into a combine executable.)
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||||||
|
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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|
Lesser General Public License for more details.
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|
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef SOFT_FP_BRAIN_H
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#define SOFT_FP_BRAIN_H 1
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#if _FP_W_TYPE_SIZE < 32
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# error "Here's a nickel kid. Go buy yourself a real computer."
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#endif
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#define _FP_FRACTBITS_B (_FP_W_TYPE_SIZE)
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#define _FP_FRACTBITS_DW_B (_FP_W_TYPE_SIZE)
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#define _FP_FRACBITS_B 8
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#define _FP_FRACXBITS_B (_FP_FRACTBITS_B - _FP_FRACBITS_B)
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#define _FP_WFRACBITS_B (_FP_WORKBITS + _FP_FRACBITS_B)
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#define _FP_WFRACXBITS_B (_FP_FRACTBITS_B - _FP_WFRACBITS_B)
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#define _FP_EXPBITS_B 8
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#define _FP_EXPBIAS_B 127
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#define _FP_EXPMAX_B 255
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#define _FP_QNANBIT_B ((_FP_W_TYPE) 1 << (_FP_FRACBITS_B-2))
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#define _FP_QNANBIT_SH_B ((_FP_W_TYPE) 1 << (_FP_FRACBITS_B-2+_FP_WORKBITS))
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#define _FP_IMPLBIT_B ((_FP_W_TYPE) 1 << (_FP_FRACBITS_B-1))
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#define _FP_IMPLBIT_SH_B ((_FP_W_TYPE) 1 << (_FP_FRACBITS_B-1+_FP_WORKBITS))
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#define _FP_OVERFLOW_B ((_FP_W_TYPE) 1 << (_FP_WFRACBITS_B))
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#define _FP_WFRACBITS_DW_B (2 * _FP_WFRACBITS_B)
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#define _FP_WFRACXBITS_DW_B (_FP_FRACTBITS_DW_B - _FP_WFRACBITS_DW_B)
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#define _FP_HIGHBIT_DW_B \
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((_FP_W_TYPE) 1 << (_FP_WFRACBITS_DW_B - 1) % _FP_W_TYPE_SIZE)
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/* The implementation of _FP_MUL_MEAT_B and _FP_DIV_MEAT_B should be
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chosen by the target machine. */
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typedef float BFtype __attribute__ ((mode (BF)));
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union _FP_UNION_B
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{
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BFtype flt;
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struct _FP_STRUCT_LAYOUT
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{
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#if __BYTE_ORDER == __BIG_ENDIAN
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unsigned sign : 1;
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unsigned exp : _FP_EXPBITS_B;
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unsigned frac : _FP_FRACBITS_B - (_FP_IMPLBIT_B != 0);
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#else
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unsigned frac : _FP_FRACBITS_B - (_FP_IMPLBIT_B != 0);
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unsigned exp : _FP_EXPBITS_B;
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unsigned sign : 1;
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#endif
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} bits;
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};
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#define FP_DECL_B(X) _FP_DECL (1, X)
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#define FP_UNPACK_RAW_B(X, val) _FP_UNPACK_RAW_1 (B, X, (val))
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#define FP_UNPACK_RAW_BP(X, val) _FP_UNPACK_RAW_1_P (B, X, (val))
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#define FP_PACK_RAW_B(val, X) _FP_PACK_RAW_1 (B, (val), X)
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#define FP_PACK_RAW_BP(val, X) \
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do \
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{ \
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if (!FP_INHIBIT_RESULTS) \
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_FP_PACK_RAW_1_P (B, (val), X); \
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} \
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while (0)
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#define FP_UNPACK_B(X, val) \
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do \
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{ \
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_FP_UNPACK_RAW_1 (B, X, (val)); \
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_FP_UNPACK_CANONICAL (B, 1, X); \
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} \
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while (0)
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#define FP_UNPACK_BP(X, val) \
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do \
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{ \
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_FP_UNPACK_RAW_1_P (B, X, (val)); \
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_FP_UNPACK_CANONICAL (B, 1, X); \
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} \
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while (0)
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#define FP_UNPACK_SEMIRAW_B(X, val) \
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do \
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{ \
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_FP_UNPACK_RAW_1 (B, X, (val)); \
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_FP_UNPACK_SEMIRAW (B, 1, X); \
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} \
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while (0)
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#define FP_UNPACK_SEMIRAW_BP(X, val) \
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do \
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{ \
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_FP_UNPACK_RAW_1_P (B, X, (val)); \
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_FP_UNPACK_SEMIRAW (B, 1, X); \
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} \
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while (0)
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#define FP_PACK_B(val, X) \
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do \
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{ \
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_FP_PACK_CANONICAL (B, 1, X); \
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_FP_PACK_RAW_1 (B, (val), X); \
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} \
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while (0)
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#define FP_PACK_BP(val, X) \
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do \
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{ \
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_FP_PACK_CANONICAL (B, 1, X); \
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if (!FP_INHIBIT_RESULTS) \
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_FP_PACK_RAW_1_P (B, (val), X); \
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} \
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while (0)
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#define FP_PACK_SEMIRAW_B(val, X) \
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do \
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{ \
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_FP_PACK_SEMIRAW (B, 1, X); \
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_FP_PACK_RAW_1 (B, (val), X); \
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} \
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while (0)
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#define FP_PACK_SEMIRAW_BP(val, X) \
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do \
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{ \
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_FP_PACK_SEMIRAW (B, 1, X); \
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if (!FP_INHIBIT_RESULTS) \
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_FP_PACK_RAW_1_P (B, (val), X); \
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} \
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while (0)
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#define FP_TO_INT_B(r, X, rsz, rsg) _FP_TO_INT (B, 1, (r), X, (rsz), (rsg))
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#define FP_TO_INT_ROUND_B(r, X, rsz, rsg) \
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_FP_TO_INT_ROUND (B, 1, (r), X, (rsz), (rsg))
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#define FP_FROM_INT_B(X, r, rs, rt) _FP_FROM_INT (B, 1, X, (r), (rs), rt)
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/* BFmode arithmetic is not implemented. */
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#define _FP_FRAC_HIGH_B(X) _FP_FRAC_HIGH_1 (X)
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#define _FP_FRAC_HIGH_RAW_B(X) _FP_FRAC_HIGH_1 (X)
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#define _FP_FRAC_HIGH_DW_B(X) _FP_FRAC_HIGH_1 (X)
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#define FP_CMP_EQ_B(r, X, Y, ex) _FP_CMP_EQ (B, 1, (r), X, Y, (ex))
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#endif /* !SOFT_FP_BRAIN_H */
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49
soft-fp/extendbfsf2.c
Normal file
49
soft-fp/extendbfsf2.c
Normal file
@ -0,0 +1,49 @@
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/* Software floating-point emulation.
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Return an bfloat16 converted to IEEE single
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Copyright (C) 2022-2024 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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|
modify it under the terms of the GNU Lesser General Public
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|
License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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||||||
|
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|
In addition to the permissions in the GNU Lesser General Public
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||||||
|
License, the Free Software Foundation gives you unlimited
|
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|
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
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|
file. (The Lesser General Public License restrictions do apply in
|
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|
other respects; for example, they cover modification of the file,
|
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|
and distribution when not linked into a combine executable.)
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The GNU C Library is distributed in the hope that it will be useful,
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|
but WITHOUT ANY WARRANTY; without even the implied warranty of
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|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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|
Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#define FP_NO_EXACT_UNDERFLOW
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#include "soft-fp.h"
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#include "brain.h"
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#include "single.h"
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SFtype
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__extendbfsf2 (BFtype a)
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{
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FP_DECL_EX;
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FP_DECL_B (A);
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FP_DECL_S (R);
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SFtype r;
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FP_INIT_EXCEPTIONS;
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FP_UNPACK_RAW_B (A, a);
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FP_EXTEND (S, B, 1, 1, R, A);
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FP_PACK_RAW_S (r, R);
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FP_HANDLE_EXCEPTIONS;
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return r;
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}
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45
soft-fp/floatdibf.c
Normal file
45
soft-fp/floatdibf.c
Normal file
@ -0,0 +1,45 @@
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/* Software floating-point emulation.
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Convert a 64bit signed integer to bfloat16
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Copyright (C) 2007-2024 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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|
modify it under the terms of the GNU Lesser General Public
|
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|
License as published by the Free Software Foundation; either
|
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|
version 2.1 of the License, or (at your option) any later version.
|
||||||
|
|
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|
In addition to the permissions in the GNU Lesser General Public
|
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|
License, the Free Software Foundation gives you unlimited
|
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|
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,
|
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|
and distribution when not linked into a combine executable.)
|
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|
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The GNU C Library is distributed in the hope that it will be useful,
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|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
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|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
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|
Lesser General Public License for more details.
|
||||||
|
|
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|
You should have received a copy of the GNU Lesser General Public
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|
License along with the GNU C Library; if not, see
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|
<https://www.gnu.org/licenses/>. */
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#include "soft-fp.h"
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#include "brain.h"
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BFtype
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__floatdibf (DItype i)
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{
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FP_DECL_EX;
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FP_DECL_B (A);
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BFtype a;
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FP_INIT_ROUNDMODE;
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FP_FROM_INT_B (A, i, DI_BITS, UDItype);
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FP_PACK_RAW_B (a, A);
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FP_HANDLE_EXCEPTIONS;
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return a;
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}
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45
soft-fp/floattibf.c
Normal file
45
soft-fp/floattibf.c
Normal file
@ -0,0 +1,45 @@
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/* Software floating-point emulation.
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Convert a 128bit signed integer to bfloat16
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Copyright (C) 2007-2024 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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|
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|
The GNU C Library is free software; you can redistribute it and/or
|
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|
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
|
||||||
|
<https://www.gnu.org/licenses/>. */
|
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|
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#include "soft-fp.h"
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#include "brain.h"
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BFtype
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__floattibf (TItype i)
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{
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FP_DECL_EX;
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FP_DECL_B (A);
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BFtype a;
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FP_INIT_ROUNDMODE;
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FP_FROM_INT_B (A, i, TI_BITS, UTItype);
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FP_PACK_RAW_B (a, A);
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FP_HANDLE_EXCEPTIONS;
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|
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return a;
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}
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45
soft-fp/floatundibf.c
Normal file
45
soft-fp/floatundibf.c
Normal file
@ -0,0 +1,45 @@
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/* Software floating-point emulation.
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|
Convert a 64bit unsigned integer to bfloat16
|
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|
Copyright (C) 2007-2024 Free Software Foundation, Inc.
|
||||||
|
This file is part of the GNU C Library.
|
||||||
|
|
||||||
|
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
|
||||||
|
<https://www.gnu.org/licenses/>. */
|
||||||
|
|
||||||
|
#include "soft-fp.h"
|
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|
#include "brain.h"
|
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|
|
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|
BFtype
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|
__floatundibf (UDItype i)
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{
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|
FP_DECL_EX;
|
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|
FP_DECL_B (A);
|
||||||
|
BFtype a;
|
||||||
|
|
||||||
|
FP_INIT_ROUNDMODE;
|
||||||
|
FP_FROM_INT_B (A, i, DI_BITS, UDItype);
|
||||||
|
FP_PACK_RAW_B (a, A);
|
||||||
|
FP_HANDLE_EXCEPTIONS;
|
||||||
|
|
||||||
|
return a;
|
||||||
|
}
|
45
soft-fp/floatuntibf.c
Normal file
45
soft-fp/floatuntibf.c
Normal file
@ -0,0 +1,45 @@
|
|||||||
|
/* Software floating-point emulation.
|
||||||
|
Convert a 128bit unsigned integer to bfloat16
|
||||||
|
Copyright (C) 2007-2024 Free Software Foundation, Inc.
|
||||||
|
This file is part of the GNU C Library.
|
||||||
|
|
||||||
|
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
|
||||||
|
<https://www.gnu.org/licenses/>. */
|
||||||
|
|
||||||
|
#include "soft-fp.h"
|
||||||
|
#include "brain.h"
|
||||||
|
|
||||||
|
BFtype
|
||||||
|
__floatuntibf (UTItype i)
|
||||||
|
{
|
||||||
|
FP_DECL_EX;
|
||||||
|
FP_DECL_B (A);
|
||||||
|
BFtype a;
|
||||||
|
|
||||||
|
FP_INIT_ROUNDMODE;
|
||||||
|
FP_FROM_INT_B (A, i, TI_BITS, UTItype);
|
||||||
|
FP_PACK_RAW_B (a, A);
|
||||||
|
FP_HANDLE_EXCEPTIONS;
|
||||||
|
|
||||||
|
return a;
|
||||||
|
}
|
75
soft-fp/truncbfhf2.c
Normal file
75
soft-fp/truncbfhf2.c
Normal file
@ -0,0 +1,75 @@
|
|||||||
|
/* Software floating-point emulation.
|
||||||
|
Truncate bfloat16 into IEEE half.
|
||||||
|
Copyright (C) 2022-2024 Free Software Foundation, Inc.
|
||||||
|
This file is part of the GNU C Library.
|
||||||
|
|
||||||
|
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/>. */
|
||||||
|
|
||||||
|
#include "soft-fp.h"
|
||||||
|
#include "half.h"
|
||||||
|
#include "brain.h"
|
||||||
|
#include "single.h"
|
||||||
|
|
||||||
|
/* BFtype and HFtype are unordered, neither is a superset or subset
|
||||||
|
of each other. Convert BFtype to SFtype (lossless) and then
|
||||||
|
truncate to HFtype. */
|
||||||
|
|
||||||
|
HFtype
|
||||||
|
__truncbfhf2 (BFtype a)
|
||||||
|
{
|
||||||
|
FP_DECL_EX;
|
||||||
|
FP_DECL_H (A);
|
||||||
|
FP_DECL_S (B);
|
||||||
|
FP_DECL_B (R);
|
||||||
|
SFtype b;
|
||||||
|
HFtype r;
|
||||||
|
|
||||||
|
FP_INIT_ROUNDMODE;
|
||||||
|
/* Optimize BFtype to SFtype conversion to simple left shift
|
||||||
|
by 16 if possible, we don't need to raise exceptions on sNaN
|
||||||
|
here as the SFtype to HFtype truncation should do that too. */
|
||||||
|
if (sizeof (BFtype) == 2
|
||||||
|
&& sizeof (unsigned short) == 2
|
||||||
|
&& sizeof (SFtype) == 4
|
||||||
|
&& sizeof (unsigned int) == 4)
|
||||||
|
{
|
||||||
|
union { BFtype a; unsigned short b; } u1;
|
||||||
|
union { SFtype a; unsigned int b; } u2;
|
||||||
|
u1.a = a;
|
||||||
|
u2.b = (u1.b << 8) << 8;
|
||||||
|
b = u2.a;
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
FP_UNPACK_RAW_B (A, a);
|
||||||
|
FP_EXTEND (S, B, 1, 1, B, A);
|
||||||
|
FP_PACK_RAW_S (b, B);
|
||||||
|
}
|
||||||
|
FP_UNPACK_SEMIRAW_S (B, b);
|
||||||
|
FP_TRUNC (H, S, 1, 1, R, B);
|
||||||
|
FP_PACK_SEMIRAW_H (r, R);
|
||||||
|
FP_HANDLE_EXCEPTIONS;
|
||||||
|
|
||||||
|
return r;
|
||||||
|
}
|
52
soft-fp/truncdfbf2.c
Normal file
52
soft-fp/truncdfbf2.c
Normal file
@ -0,0 +1,52 @@
|
|||||||
|
/* Software floating-point emulation.
|
||||||
|
Truncate IEEE double into bfloat16.
|
||||||
|
Copyright (C) 2022-2024 Free Software Foundation, Inc.
|
||||||
|
This file is part of the GNU C Library.
|
||||||
|
|
||||||
|
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/>. */
|
||||||
|
|
||||||
|
#include "soft-fp.h"
|
||||||
|
#include "brain.h"
|
||||||
|
#include "double.h"
|
||||||
|
|
||||||
|
BFtype
|
||||||
|
__truncdfbf2 (DFtype a)
|
||||||
|
{
|
||||||
|
FP_DECL_EX;
|
||||||
|
FP_DECL_D (A);
|
||||||
|
FP_DECL_B (R);
|
||||||
|
BFtype r;
|
||||||
|
|
||||||
|
FP_INIT_ROUNDMODE;
|
||||||
|
FP_UNPACK_SEMIRAW_D (A, a);
|
||||||
|
#if _FP_W_TYPE_SIZE < _FP_FRACBITS_D
|
||||||
|
FP_TRUNC (B, D, 1, 2, R, A);
|
||||||
|
#else
|
||||||
|
FP_TRUNC (B, D, 1, 1, R, A);
|
||||||
|
#endif
|
||||||
|
FP_PACK_SEMIRAW_B (r, R);
|
||||||
|
FP_HANDLE_EXCEPTIONS;
|
||||||
|
|
||||||
|
return r;
|
||||||
|
}
|
58
soft-fp/trunchfbf2.c
Normal file
58
soft-fp/trunchfbf2.c
Normal file
@ -0,0 +1,58 @@
|
|||||||
|
/* Software floating-point emulation.
|
||||||
|
Truncate IEEE half into bfloat16.
|
||||||
|
Copyright (C) 2022-2024 Free Software Foundation, Inc.
|
||||||
|
This file is part of the GNU C Library.
|
||||||
|
|
||||||
|
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/>. */
|
||||||
|
|
||||||
|
#include "soft-fp.h"
|
||||||
|
#include "brain.h"
|
||||||
|
#include "half.h"
|
||||||
|
#include "single.h"
|
||||||
|
|
||||||
|
/* BFtype and HFtype are unordered, neither is a superset or subset
|
||||||
|
of each other. Convert HFtype to SFtype (lossless) and then
|
||||||
|
truncate to BFtype. */
|
||||||
|
|
||||||
|
BFtype
|
||||||
|
__trunchfbf2 (HFtype a)
|
||||||
|
{
|
||||||
|
FP_DECL_EX;
|
||||||
|
FP_DECL_H (A);
|
||||||
|
FP_DECL_S (B);
|
||||||
|
FP_DECL_B (R);
|
||||||
|
SFtype b;
|
||||||
|
BFtype r;
|
||||||
|
|
||||||
|
FP_INIT_ROUNDMODE;
|
||||||
|
FP_UNPACK_RAW_H (A, a);
|
||||||
|
FP_EXTEND (S, H, 1, 1, B, A);
|
||||||
|
FP_PACK_RAW_S (b, B);
|
||||||
|
FP_UNPACK_SEMIRAW_S (B, b);
|
||||||
|
FP_TRUNC (B, S, 1, 1, R, B);
|
||||||
|
FP_PACK_SEMIRAW_B (r, R);
|
||||||
|
FP_HANDLE_EXCEPTIONS;
|
||||||
|
|
||||||
|
return r;
|
||||||
|
}
|
48
soft-fp/truncsfbf2.c
Normal file
48
soft-fp/truncsfbf2.c
Normal file
@ -0,0 +1,48 @@
|
|||||||
|
/* Software floating-point emulation.
|
||||||
|
Truncate IEEE single into bfloat16.
|
||||||
|
Copyright (C) 2022-2024 Free Software Foundation, Inc.
|
||||||
|
This file is part of the GNU C Library.
|
||||||
|
|
||||||
|
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/>. */
|
||||||
|
|
||||||
|
#include "soft-fp.h"
|
||||||
|
#include "brain.h"
|
||||||
|
#include "single.h"
|
||||||
|
|
||||||
|
BFtype
|
||||||
|
__truncsfbf2 (SFtype a)
|
||||||
|
{
|
||||||
|
FP_DECL_EX;
|
||||||
|
FP_DECL_S (A);
|
||||||
|
FP_DECL_B (R);
|
||||||
|
BFtype r;
|
||||||
|
|
||||||
|
FP_INIT_ROUNDMODE;
|
||||||
|
FP_UNPACK_SEMIRAW_S (A, a);
|
||||||
|
FP_TRUNC (B, S, 1, 1, R, A);
|
||||||
|
FP_PACK_SEMIRAW_B (r, R);
|
||||||
|
FP_HANDLE_EXCEPTIONS;
|
||||||
|
|
||||||
|
return r;
|
||||||
|
}
|
52
soft-fp/trunctfbf2.c
Normal file
52
soft-fp/trunctfbf2.c
Normal file
@ -0,0 +1,52 @@
|
|||||||
|
/* Software floating-point emulation.
|
||||||
|
Truncate IEEE quad into bfloat16.
|
||||||
|
Copyright (C) 2022-2024 Free Software Foundation, Inc.
|
||||||
|
This file is part of the GNU C Library.
|
||||||
|
|
||||||
|
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
|
||||||
|
<https://www.gnu.org/licenses/>. */
|
||||||
|
|
||||||
|
#include "soft-fp.h"
|
||||||
|
#include "brain.h"
|
||||||
|
#include "quad.h"
|
||||||
|
|
||||||
|
BFtype
|
||||||
|
__trunctfbf2 (TFtype a)
|
||||||
|
{
|
||||||
|
FP_DECL_EX;
|
||||||
|
FP_DECL_Q (A);
|
||||||
|
FP_DECL_B (R);
|
||||||
|
BFtype r;
|
||||||
|
|
||||||
|
FP_INIT_ROUNDMODE;
|
||||||
|
FP_UNPACK_SEMIRAW_Q (A, a);
|
||||||
|
#if _FP_W_TYPE_SIZE < 64
|
||||||
|
FP_TRUNC (B, Q, 1, 4, R, A);
|
||||||
|
#else
|
||||||
|
FP_TRUNC (B, Q, 1, 2, R, A);
|
||||||
|
#endif
|
||||||
|
FP_PACK_SEMIRAW_B (r, R);
|
||||||
|
FP_HANDLE_EXCEPTIONS;
|
||||||
|
|
||||||
|
return r;
|
||||||
|
}
|
52
soft-fp/truncxfbf2.c
Normal file
52
soft-fp/truncxfbf2.c
Normal file
@ -0,0 +1,52 @@
|
|||||||
|
/* Software floating-point emulation.
|
||||||
|
Truncate IEEE extended into bfloat16.
|
||||||
|
Copyright (C) 2022-2024 Free Software Foundation, Inc.
|
||||||
|
This file is part of the GNU C Library.
|
||||||
|
|
||||||
|
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/>. */
|
||||||
|
|
||||||
|
#include "soft-fp.h"
|
||||||
|
#include "brain.h"
|
||||||
|
#include "extended.h"
|
||||||
|
|
||||||
|
BFtype
|
||||||
|
__truncxfbf2 (XFtype a)
|
||||||
|
{
|
||||||
|
FP_DECL_EX;
|
||||||
|
FP_DECL_E (A);
|
||||||
|
FP_DECL_B (R);
|
||||||
|
BFtype r;
|
||||||
|
|
||||||
|
FP_INIT_ROUNDMODE;
|
||||||
|
FP_UNPACK_SEMIRAW_E (A, a);
|
||||||
|
#if _FP_W_TYPE_SIZE < 64
|
||||||
|
FP_TRUNC (B, E, 1, 4, R, A);
|
||||||
|
#else
|
||||||
|
FP_TRUNC (B, E, 1, 2, R, A);
|
||||||
|
#endif
|
||||||
|
FP_PACK_SEMIRAW_B (r, R);
|
||||||
|
FP_HANDLE_EXCEPTIONS;
|
||||||
|
|
||||||
|
return r;
|
||||||
|
}
|
Loading…
Reference in New Issue
Block a user