1.file "fmal.s"
2
3
4// Copyright (c) 2001 - 2003, Intel Corporation
5// All rights reserved.
6//
7//
8// Redistribution and use in source and binary forms, with or without
9// modification, are permitted provided that the following conditions are
10// met:
11//
12// * Redistributions of source code must retain the above copyright
13// notice, this list of conditions and the following disclaimer.
14//
15// * Redistributions in binary form must reproduce the above copyright
16// notice, this list of conditions and the following disclaimer in the
17// documentation and/or other materials provided with the distribution.
18//
19// * The name of Intel Corporation may not be used to endorse or promote
20// products derived from this software without specific prior written
21// permission.
22
23// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
24// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
25// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
26// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL INTEL OR ITS
27// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
28// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
29// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
30// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
31// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY OR TORT (INCLUDING
32// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
33// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34//
35// Intel Corporation is the author of this code, and requests that all
36// problem reports or change requests be submitted to it directly at
37// http://www.intel.com/software/products/opensource/libraries/num.htm.
38//
39// History
40//==============================================================
41// 06/07/01 Initial version
42// 05/20/02 Cleaned up namespace and sf0 syntax
43// 02/10/03 Reordered header: .section, .global, .proc, .align
44//
45// API
46//==============================================================
47// long double fmal  (long double x, long double y, long double z)
48//
49// Overview of operation
50//==============================================================
51// returns x * y + z with one rounding error
52
53// All the special cases are handled by the fma instruction itself
54
55// floating-point registers used: 3
56// f8,  input x, output
57// f9,  input y
58// f10, input z
59
60.section .text
61GLOBAL_LIBM_ENTRY(fmal)
62
63{ .mfb
64      nop.m 999
65      fma.s0  f8 = f8, f9, f10  // Result = x * y + z
66      br.ret.sptk    b0
67}
68;;
69
70GLOBAL_LIBM_END(fmal)
71libm_alias_ldouble_other (fma, fma)
72libm_alias_ldouble_narrow (fma, fma)
73