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 <<fesetexceptflag>>---set floating-point status flags
35
36 INDEX
37 fesetexceptflag
38
39 SYNOPSIS
40 #include <fenv.h>
41 int fesetexceptflag(const fexcept_t *<[flagp]>, int <[excepts]>);
42
43 Link with -lm.
44
45 DESCRIPTION
46 This method attempts to set the floating-point status flags specified
47 by <[excepts]> to the states indicated by <[flagp]>. The argument
48 <[flagp]> must point to an fexcept_t instance obtained via calling
49 <<fegetexceptflag>> with at least the floating-point exceptions specified
50 by the argument <[excepts]>.
51
52 This method does not raise any floating-point exceptions. It only
53 sets the state of the flags.
54
55 RETURNS
56 If the information was successfully returned, this method returns
57 zero. Otherwise, a non-zero value is returned.
58
59 PORTABILITY
60 ANSI C requires <<fesetexceptflag>>.
61
62 Not all Newlib targets have a working implementation. Refer to
63 the file <<sys/fenv.h>> to see the status for your target.
64 */
65
66 /*
67 * This is a non-functional implementation that should be overridden
68 * by an architecture specific implementation in newlib/libm/machine/ARCH.
69 */
fesetexceptflag(const fexcept_t * flagp,int excepts)70 int fesetexceptflag(const fexcept_t *flagp, int excepts)
71 {
72 (void) flagp;
73 (void) excepts;
74 return -ENOTSUP;
75 }
76
