1 /****************************************************************
2
3 The author of this software is David M. Gay.
4
5 Copyright (C) 1998-2001 by Lucent Technologies
6 All Rights Reserved
7
8 Permission to use, copy, modify, and distribute this software and
9 its documentation for any purpose and without fee is hereby
10 granted, provided that the above copyright notice appear in all
11 copies and that both that the copyright notice and this
12 permission notice and warranty disclaimer appear in supporting
13 documentation, and that the name of Lucent or any of its entities
14 not be used in advertising or publicity pertaining to
15 distribution of the software without specific, written prior
16 permission.
17
18 LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
20 IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
21 SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
22 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
23 IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
24 ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
25 THIS 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 /* Test program for g_dfmt, strtoId, strtod, strtopd, and strtord.
33 *
34 * Inputs (on stdin):
35 * r rounding_mode
36 * n ndig
37 * number
38 * #hex0 hex1
39 *
40 * rounding_mode values:
41 * 0 = toward zero
42 * 1 = nearest
43 * 2 = toward +Infinity
44 * 3 = toward -Infinity
45 *
46 * where number is a decimal floating-point number,
47 * hex0 is a string of Hex <= 8 digits for the most significant
48 * word of the number, hex1 is a similar string for the other
49 * (least significant) word, and ndig is a parameters to g_dfmt.
50 */
51
52 #include "gdtoaimp.h"
53 #include <stdio.h>
54 #include <stdlib.h>
55
56 extern int getround ANSI((int,char*));
57
58 static char ibuf[2048], obuf[1024];
59
60 #define U (unsigned long)
61
62 int
main(Void)63 main(Void)
64 {
65 char *s, *se, *se1;
66 double f1, fI[2];
67 int i, i1, ndig = 0, r = 1;
68 long LL[2];
69 union { double f; ULong L[2]; } u;
70
71 while( (s = fgets(ibuf, sizeof(ibuf), stdin)) !=0) {
72 while(*s <= ' ')
73 if (!*s++)
74 continue;
75 switch(*s) {
76 case 'r':
77 r = getround(r, s);
78 continue;
79 case 'n':
80 i = s[1];
81 if (i <= ' ' || (i >= '0' && i <= '9')) {
82 ndig = atoi(s+1);
83 continue;
84 }
85 break; /* nan? */
86 case '#':
87 LL[0] = u.L[_0];
88 LL[1] = u.L[_1];
89 sscanf(s+1, "%lx %lx", &LL[0], &LL[1]);
90 u.L[_0] = LL[0];
91 u.L[_1] = LL[1];
92 printf("\nInput: %s", ibuf);
93 printf("--> f = #%lx %lx\n", (long)u.L[_0], (long)u.L[_1]);
94 goto fmt_test;
95 }
96 printf("\nInput: %s", ibuf);
97 i = strtord(ibuf, &se, r, &u.f);
98 if (r == 1) {
99 if ((u.f != strtod(ibuf, &se1) || se1 != se))
100 printf("***strtod and strtord disagree!!\n");
101 i1 = strtopd(ibuf, &se, &f1);
102 if (i != i1 || u.f != f1 || se != se1)
103 printf("***strtord and strtopd disagree!!\n");
104 }
105 printf("strtod consumes %d bytes and returns %d with f = %.17g = #%lx %lx\n",
106 (int)(se-ibuf), i, u.f, U u.L[_0], U u.L[_1]);
107 fmt_test:
108 se = g_dfmt(obuf, &u.f, ndig, sizeof(obuf));
109 printf("g_dfmt(%d) gives %d bytes: \"%s\"\n\n",
110 ndig, (int)(se-obuf), se ? obuf : "<null>");
111 if (*s == '#')
112 continue;
113 printf("strtoId returns %d,", strtoId(ibuf, &se, fI, &fI[1]));
114 printf(" consuming %d bytes.\n", (int)(se-ibuf));
115 if (fI[0] == fI[1]) {
116 if (fI[0] == u.f)
117 printf("fI[0] == fI[1] == strtod\n");
118 else
119 printf("fI[0] == fI[1] = #%lx %lx = %.17g\n",
120 U ((ULong*)fI)[_0], U ((ULong*)fI)[_1],
121 fI[0]);
122 }
123 else {
124 printf("fI[0] = #%lx %lx = %.17g\n",
125 U ((ULong*)fI)[_0], U ((ULong*)fI)[_1], fI[0]);
126 printf("fI[1] = #%lx %lx = %.17g\n",
127 U ((ULong*)&fI[1])[_0], U ((ULong*)&fI[1])[_1],
128 fI[1]);
129 if (fI[0] == u.f)
130 printf("fI[0] == strtod\n");
131 else if (fI[1] == u.f)
132 printf("fI[1] == strtod\n");
133 else
134 printf("**** Both differ from strtod ****\n");
135 }
136 printf("\n");
137 }
138 return 0;
139 }
140