1/****************************************************************
2
3The author of this software is David M. Gay.
4
5Copyright (C) 1998 by Lucent Technologies
6All Rights Reserved
7
8Permission to use, copy, modify, and distribute this software and
9its documentation for any purpose and without fee is hereby
10granted, provided that the above copyright notice appear in all
11copies and that both that the copyright notice and this
12permission notice and warranty disclaimer appear in supporting
13documentation, and that the name of Lucent or any of its entities
14not be used in advertising or publicity pertaining to
15distribution of the software without specific, written prior
16permission.
17
18LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
20IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
21SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
22WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
23IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
24ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
25THIS SOFTWARE.
26
27****************************************************************/
28
29/* Please send bug reports to David M. Gay (dmg at acm dot org,
30 * with " at " changed at "@" and " dot " changed to ".").	*/
31
32#include <stdio.h>
33#include <stdlib.h>
34
35static char *dir[4] = { "toward zero", "nearest", "toward +Infinity",
36			"toward -Infinity" };
37
38#ifdef Honor_FLT_ROUNDS
39#include <fenv.h>
40static int fe_conv[4] = {FE_TOWARDZERO, FE_TONEAREST, FE_UPWARD, FE_DOWNWARD };
41#endif
42
43 int
44#ifdef KR_headers
45getround(r, s) int r; char *s;
46#else
47getround(int r, char *s)
48#endif
49{
50	int i;
51
52	while(*++s <= ' ') {
53		if (!*s) {
54			printf("Current round mode for strtor... is %d (%s).\n",
55				r, dir[r]);
56			return r;
57			}
58		}
59	i = atoi(s);
60	if (i >= 0 && i < 4) {
61		printf("Rounding mode for strtor... ");
62		if (i == r)
63			printf("was and is %d (%s)\n", i, dir[i]);
64		else
65			printf("changed from %d (%s) to %d (%s)\n",
66				r, dir[r], i, dir[i]);
67#ifdef Honor_FLT_ROUNDS
68		fesetround(fe_conv[i]);
69#endif
70		return i;
71		}
72	printf("Bad rounding direction %d: choose among\n", i);
73	for(i = 0; i < 4; i++)
74		printf("\t%d (%s)\n", i, dir[i]);
75	printf("Leaving rounding mode for strtor... at %d (%s)\n", r, dir[r]);
76	return r;
77	}
78
79#ifdef USE_MY_LOCALE
80#include <locale.h>
81
82 struct lconv *
83localeconv(void)
84{
85	static struct lconv mylocale;
86	mylocale.decimal_point = "<Pt>";
87	return &mylocale;
88	}
89#endif
90
91