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soft-fp: Add fixhf[uns][di|si] and float[uns][di|si]hf

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Add more IEEE half conversion routines:

- Convert 32-bit/64-bit integer to IEEE half.
- Convert IEEE half to 32-bit/64-bit integer.

They are required by RISC-V _Float16 support, tested with RISC-V GCC.
This commit is contained in:
Kito Cheng 2022-07-05 17:46:31 +08:00 committed by Adhemerval Zanella
parent 26a3499cdb
commit 8bc3f94a06
8 changed files with 360 additions and 0 deletions
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45
soft-fp/fixhfdi.c Normal file
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/* Software floating-point emulation.
Convert a IEEE half to 64bit signed integer
Copyright (C) 2022 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"
DItype
__fixhfdi (HFtype a)
{
FP_DECL_EX;
FP_DECL_H (A);
UDItype r;
FP_INIT_EXCEPTIONS;
FP_UNPACK_RAW_H (A, a);
FP_TO_INT_H (r, A, DI_BITS, 1);
FP_HANDLE_EXCEPTIONS;
return r;
}

45
soft-fp/fixhfsi.c Normal file
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/* Software floating-point emulation.
Convert a IEEE half to 32bit signed integer
Copyright (C) 2022 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"
SItype
__fixhfsi (HFtype a)
{
FP_DECL_EX;
FP_DECL_H (A);
USItype r;
FP_INIT_EXCEPTIONS;
FP_UNPACK_RAW_H (A, a);
FP_TO_INT_H (r, A, SI_BITS, 1);
FP_HANDLE_EXCEPTIONS;
return r;
}

45
soft-fp/fixunshfdi.c Normal file
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/* Software floating-point emulation.
Convert IEEE half to 64bit unsigned integer
Copyright (C) 2022 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"
UDItype
__fixunshfdi (HFtype a)
{
FP_DECL_EX;
FP_DECL_H (A);
UDItype r;
FP_INIT_EXCEPTIONS;
FP_UNPACK_RAW_H (A, a);
FP_TO_INT_H (r, A, DI_BITS, 0);
FP_HANDLE_EXCEPTIONS;
return r;
}

45
soft-fp/fixunshfsi.c Normal file
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/* Software floating-point emulation.
Convert IEEE half to 32bit unsigned integer
Copyright (C) 2022 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"
USItype
__fixunshfsi (HFtype a)
{
FP_DECL_EX;
FP_DECL_H (A);
USItype r;
FP_INIT_EXCEPTIONS;
FP_UNPACK_RAW_H (A, a);
FP_TO_INT_H (r, A, SI_BITS, 0);
FP_HANDLE_EXCEPTIONS;
return r;
}

45
soft-fp/floatdihf.c Normal file
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/* Software floating-point emulation.
Convert a 64bit signed integer to IEEE half
Copyright (C) 2022 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"
HFtype
__floatdihf (DItype i)
{
FP_DECL_EX;
FP_DECL_H (A);
HFtype a;
FP_INIT_ROUNDMODE;
FP_FROM_INT_H (A, i, DI_BITS, UDItype);
FP_PACK_RAW_H (a, A);
FP_HANDLE_EXCEPTIONS;
return a;
}

45
soft-fp/floatsihf.c Normal file
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/* Software floating-point emulation.
Convert a 32bit signed integer to IEEE half
Copyright (C) 2022 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"
HFtype
__floatsihf (SItype i)
{
FP_DECL_EX;
FP_DECL_H (A);
HFtype a;
FP_INIT_ROUNDMODE;
FP_FROM_INT_H (A, i, SI_BITS, USItype);
FP_PACK_RAW_H (a, A);
FP_HANDLE_EXCEPTIONS;
return a;
}

45
soft-fp/floatundihf.c Normal file
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/* Software floating-point emulation.
Convert a 64bit unsigned integer to IEEE half.
Copyright (C) 2022 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"
HFtype
__floatundihf (UDItype i)
{
FP_DECL_EX;
FP_DECL_H (A);
HFtype a;
FP_INIT_ROUNDMODE;
FP_FROM_INT_H (A, i, DI_BITS, UDItype);
FP_PACK_RAW_H (a, A);
FP_HANDLE_EXCEPTIONS;
return a;
}

45
soft-fp/floatunsihf.c Normal file
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/* Software floating-point emulation.
Convert a 32bit unsigned integer to IEEE half.
Copyright (C) 2022 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"
HFtype
__floatunsihf (USItype i)
{
FP_DECL_EX;
FP_DECL_H (A);
HFtype a;
FP_INIT_ROUNDMODE;
FP_FROM_INT_H (A, i, SI_BITS, USItype);
FP_PACK_RAW_H (a, A);
FP_HANDLE_EXCEPTIONS;
return a;
}