1 |
|
---|
2 | /*============================================================================
|
---|
3 |
|
---|
4 | This C source file is part of the SoftFloat IEEE Floating-Point Arithmetic
|
---|
5 | Package, Release 3e, by John R. Hauser.
|
---|
6 |
|
---|
7 | Copyright 2011, 2012, 2013, 2014, 2015, 2017 The Regents of the University of
|
---|
8 | California. All rights reserved.
|
---|
9 |
|
---|
10 | Redistribution and use in source and binary forms, with or without
|
---|
11 | modification, are permitted provided that the following conditions are met:
|
---|
12 |
|
---|
13 | 1. Redistributions of source code must retain the above copyright notice,
|
---|
14 | this list of conditions, and the following disclaimer.
|
---|
15 |
|
---|
16 | 2. Redistributions in binary form must reproduce the above copyright notice,
|
---|
17 | this list of conditions, and the following disclaimer in the documentation
|
---|
18 | and/or other materials provided with the distribution.
|
---|
19 |
|
---|
20 | 3. Neither the name of the University nor the names of its contributors may
|
---|
21 | be used to endorse or promote products derived from this software without
|
---|
22 | specific prior written permission.
|
---|
23 |
|
---|
24 | THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS "AS IS", AND ANY
|
---|
25 | EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
---|
26 | WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE
|
---|
27 | DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
|
---|
28 | DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
---|
29 | (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
---|
30 | LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
---|
31 | ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
---|
32 | (INCLUDING 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 | =============================================================================*/
|
---|
36 |
|
---|
37 | #include <stdint.h>
|
---|
38 | #include "platform.h"
|
---|
39 | #include "primitiveTypes.h"
|
---|
40 | #include "specialize.h"
|
---|
41 | #include "softfloat.h"
|
---|
42 |
|
---|
43 | /*----------------------------------------------------------------------------
|
---|
44 | | Interpreting the unsigned integer formed from concatenating 'uiA64' and
|
---|
45 | | 'uiA0' as an 80-bit extended floating-point value, and likewise interpreting
|
---|
46 | | the unsigned integer formed from concatenating 'uiB64' and 'uiB0' as another
|
---|
47 | | 80-bit extended floating-point value, and assuming at least on of these
|
---|
48 | | floating-point values is a NaN, returns the bit pattern of the combined NaN
|
---|
49 | | result. If either original floating-point value is a signaling NaN, the
|
---|
50 | | invalid exception is raised.
|
---|
51 | *----------------------------------------------------------------------------*/
|
---|
52 | struct uint128
|
---|
53 | softfloat_propagateNaNExtF80UI(
|
---|
54 | uint_fast16_t uiA64,
|
---|
55 | uint_fast64_t uiA0,
|
---|
56 | uint_fast16_t uiB64,
|
---|
57 | uint_fast64_t uiB0
|
---|
58 | SOFTFLOAT_STATE_DECL_COMMA
|
---|
59 | )
|
---|
60 | {
|
---|
61 | struct uint128 uiZ;
|
---|
62 |
|
---|
63 | if (
|
---|
64 | softfloat_isSigNaNExtF80UI( uiA64, uiA0 )
|
---|
65 | || softfloat_isSigNaNExtF80UI( uiB64, uiB0 )
|
---|
66 | ) {
|
---|
67 | softfloat_raiseFlags( softfloat_flag_invalid SOFTFLOAT_STATE_ARG_COMMA );
|
---|
68 | }
|
---|
69 | uiZ.v64 = defaultNaNExtF80UI64;
|
---|
70 | uiZ.v0 = defaultNaNExtF80UI0;
|
---|
71 | return uiZ;
|
---|
72 |
|
---|
73 | }
|
---|
74 |
|
---|