From 87ab10d6524fe4faabd7eb3eac5868165ecfb323 Mon Sep 17 00:00:00 2001 From: James Greenhalgh Date: Wed, 21 Sep 2016 21:02:54 +0000 Subject: [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. --- soft-fp/fixhfti.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 soft-fp/fixhfti.c (limited to 'soft-fp/fixhfti.c') diff --git a/soft-fp/fixhfti.c b/soft-fp/fixhfti.c new file mode 100644 index 0000000000..3610f4cc31 --- /dev/null +++ b/soft-fp/fixhfti.c @@ -0,0 +1,45 @@ +/* Software floating-point emulation. + Convert IEEE half to 128bit signed 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 + . */ + +#include "soft-fp.h" +#include "half.h" + +TItype +__fixhfti (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, 1); + FP_HANDLE_EXCEPTIONS; + + return r; +} -- cgit 1.4.1