1 /* $OpenBSD: feget.c,v 1.2 2021/12/13 16:56:49 deraadt Exp $ */
2 /*
3 * Copyright (c) 2018 Alexander Bluhm <bluhm@openbsd.org>
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18 #include <sys/types.h>
19
20 #include <err.h>
21 #include <fenv.h>
22 #include <stdio.h>
23
24 #define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
25
26 int
main(int argc,char * argv[])27 main(int argc, char *argv[])
28 {
29 fenv_t fenv;
30 size_t i;
31
32 if (fegetenv(&fenv))
33 err(1, "fegetenv");
34
35 printf("control\t%08x\n", fenv.__x87.__control);
36 printf("status\t%08x\n", fenv.__x87.__status);
37 printf("tag\t%08x\n", fenv.__x87.__tag);
38 for (i = 0; i < nitems(fenv.__x87.__others); i++)
39 printf("others[%zu]\t%08x\n", i, fenv.__x87.__others[i]);
40 printf("mxcsr\t%08x\n", fenv.__mxcsr);
41
42 return 0;
43 }
44