diff options
Diffstat (limited to 'sysdeps/ia64/fpu/s_fabs.S')
| -rw-r--r-- | sysdeps/ia64/fpu/s_fabs.S | 116 |
1 files changed, 82 insertions, 34 deletions
diff --git a/sysdeps/ia64/fpu/s_fabs.S b/sysdeps/ia64/fpu/s_fabs.S index ea3908dbc3..3434389a3c 100644 --- a/sysdeps/ia64/fpu/s_fabs.S +++ b/sysdeps/ia64/fpu/s_fabs.S @@ -1,34 +1,82 @@ -/* Copyright (C) 2000 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. - - 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, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#include <sysdep.h> -#undef ret - -ENTRY (__fabs) -{ - fabs fret0 = farg0 - br.ret.sptk.many rp -} -END (__fabs) - -strong_alias (__fabs, __fabsf) -strong_alias (__fabs, __fabsl) - -weak_alias (__fabs, fabs) -weak_alias (__fabsf, fabsf) -weak_alias (__fabsl, fabsl) +.file "fabs.s" + + +// Copyright (c) 2000 - 2003, Intel Corporation +// All rights reserved. +// +// Contributed 2000 by the Intel Numerics Group, Intel Corporation +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// +// * Redistributions in binary form must reproduce the above copyright +// notice, this list of conditions and the following disclaimer in the +// documentation and/or other materials provided with the distribution. +// +// * The name of Intel Corporation may not be used to endorse or promote +// products derived from this software without specific prior written +// permission. + +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL INTEL OR ITS +// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, +// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, +// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR +// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY +// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY OR TORT (INCLUDING +// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +// +// Intel Corporation is the author of this code, and requests that all +// problem reports or change requests be submitted to it directly at +// http://www.intel.com/software/products/opensource/libraries/num.htm. +// +// History +//============================================================== +// 02/02/00 Initial version +// 02/07/02 Added __libm_fabs entry point to test in case compiler inlines +// 05/20/02 Cleaned up namespace and sf0 syntax +// 02/10/03 Reordered header: .section, .global, .proc, .align +// +// API +//============================================================== +// double fabs (double x) +// +// Overview of operation +//============================================================== +// returns absolute value of x + +// floating-point registers used: 1 +// f8, input + +.section .text +.global __libm_fabs# + +.proc __libm_fabs# +__libm_fabs: +.endp __libm_fabs# + +GLOBAL_IEEE754_ENTRY(fabs) + +// set invalid or denormal flags and take fault if +// necessary + +{ .mfi + nop.m 999 + fcmp.eq.unc.s0 p6,p7 = f8,f1 + nop.i 999 ;; +} + +{ .mfb + nop.m 999 + fmerge.s f8 = f0,f8 + br.ret.sptk b0 ;; +} + +GLOBAL_IEEE754_END(fabs) |