1 /*
2 (c) Copyright 2019 Joel Sherrill <joel@rtems.org
3 All rights reserved.
4
5 Redistribution and use in source and binary forms, with or without
6 modification, are permitted provided that the following conditions
7 are met:
8
9 1. Redistributions of source code must retain the above copyright
10 notice, this list of conditions and the following disclaimer.
11
12 2. Redistributions in binary form must reproduce the above copyright
13 notice, this list of conditions and the following disclaimer in the
14 documentation and/or other materials provided with the distribution.
15
16 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include <fenv.h>
30 #include <errno.h>
31
32 /*
33 FUNCTION
34 <<fegetround>>---get current rounding direction
35
36 INDEX
37 fegetround
38 SYNOPSIS
39 #include <fenv.h>
40 int fegetround(void);
41
42 Link with -lm.
43
44 DESCRIPTION
45 This method returns the current rounding direction.
46
47 RETURNS
48 This method returns the rounding direction, corresponding to the value
49 of the respective rouding macro. If the current rounding direction cannot
50 be determined, then a negative value is returned.
51
52 PORTABILITY
53 ANSI C requires <<fegetround>>.
54
55 Not all Newlib targets have a working implementation. Refer to
56 the file <<sys/fenv.h>> to see the status for your target.
57 */
58
59 /*
60 * This is a non-functional implementation that should be overridden
61 * by an architecture specific implementation in newlib/libm/machine/ARCH.
62 */
fegetround(void)63 int fegetround(void)
64 {
65 return -ENOTSUP;
66 }
67
