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author | James Greenhalgh <james.greenhalgh@arm.com> | 2016-09-21 21:02:54 +0000 |
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committer | Joseph Myers <joseph@codesourcery.com> | 2016-09-21 21:02:54 +0000 |
commit | 87ab10d6524fe4faabd7eb3eac5868165ecfb323 (patch) | |
tree | 31f378666f9bfc6f0793611bfa0f0a5c6aae8ce9 /soft-fp/fixunshfti.c | |
parent | d942e95cd7e493efbbff58b78e63013c79e634cd (diff) | |
download | glibc-87ab10d6524fe4faabd7eb3eac5868165ecfb323.zip glibc-87ab10d6524fe4faabd7eb3eac5868165ecfb323.tar.gz glibc-87ab10d6524fe4faabd7eb3eac5868165ecfb323.tar.bz2 |
[soft-fp] Add support for various half-precision conversion routines.
This patch adds conversion routines required for _Float16 support in
AArch64.
These are one-step conversions to and from TImode and TFmode. We need
these on AArch64 regardless of presence of the ARMv8.2-A 16-bit
floating-point extensions.
In the patch, soft-fp/half.h is derived from soft-fp/single.h . The
conversion routines are derivatives of their respective SFmode
variants.
* soft-fp/extendhftf2.c: New.
* soft-fp/fixhfti.c: Likewise.
* soft-fp/fixunshfti.c: Likewise.
* soft-fp/floattihf.c: Likewise.
* soft-fp/floatuntihf.c: Likewise.
* soft-fp/half.h: Likewise.
* soft-fp/trunctfhf2.c: Likewise.
Diffstat (limited to 'soft-fp/fixunshfti.c')
-rw-r--r-- | soft-fp/fixunshfti.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/soft-fp/fixunshfti.c b/soft-fp/fixunshfti.c new file mode 100644 index 0000000..30edbfe --- /dev/null +++ b/soft-fp/fixunshfti.c @@ -0,0 +1,45 @@ +/* Software floating-point emulation. + Convert IEEE half to 128bit unsigned integer + Copyright (C) 2007-2016 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" + +UTItype +__fixunshfti (HFtype a) +{ + FP_DECL_EX; + FP_DECL_H (A); + UTItype r; + + FP_INIT_EXCEPTIONS; + FP_UNPACK_RAW_H (A, a); + FP_TO_INT_H (r, A, TI_BITS, 0); + FP_HANDLE_EXCEPTIONS; + + return r; +} |