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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_xfmt, strtoIx, strtopx, and strtorx.
33  *
34  * Inputs (on stdin):
35  *              r rounding_mode
36  *              n ndig
37  *              number
38  *              #hex0 hex1 hex2 hex3 hex4
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 <= 4 Hex digits for the most significant
48  * half-word of the number, hex1 is a similar string for the next
49  * half-word, etc., and ndig is a parameters to g_xfmt.
50  */
51
52 #include "gdtoa.h"
53 #include <stdio.h>
54 #include <stdlib.h>
55 #include <string.h>
56
57  extern int getround ANSI((int,char*));
58
59  static char ibuf[2048], obuf[2048];
60
61 #undef _0
62 #undef _1
63
64 /* one or the other of IEEE_MC68k or IEEE_8087 should be #defined */
65
66 #ifdef IEEE_MC68k
67 #define _0 0
68 #define _1 1
69 #define _2 2
70 #define _3 3
71 #define _4 4
72 #endif
73 #ifdef IEEE_8087
74 #define _0 4
75 #define _1 3
76 #define _2 2
77 #define _3 1
78 #define _4 0
79 #endif
80
81  int
82 main(Void)
83 {
84         char *s, *se, *se1;
85         int i, dItry, ndig = 0, r = 1;
86         union { long double d; UShort bits[5]; } u, v[2];
87
88         while(s = fgets(ibuf, sizeof(ibuf), stdin)) {
89                 while(*s <= ' ')
90                         if (!*s++)
91                                 continue;
92                 dItry = 0;
93                 switch(*s) {
94                   case 'r':
95                         r = getround(r, s);
96                         continue;
97                   case 'n':
98                         i = s[1];
99                         if (i <= ' ' || i >= '0' && i <= '9') {
100                                 ndig = atoi(s+1);
101                                 continue;
102                                 }
103                         break; /* nan? */
104                   case '#':
105                         sscanf(s+1, "%hx %hx %hx %hx %hx", &u.bits[_0],
106                                 &u.bits[_1], &u.bits[_2], &u.bits[_3],
107                                 &u.bits[_4]);
108                         printf("\nInput: %s", ibuf);
109                         printf(" --> f = #%x %x %x %x %x\n", u.bits[_0],
110                                 u.bits[_1], u.bits[_2], u.bits[_3], u.bits[_4]);
111                         goto fmt_test;
112                         }
113                 dItry = 1;
114                 printf("\nInput: %s", ibuf);
115                 i = strtorx(ibuf, &se, r, u.bits);
116                 if (r == 1 && (i != strtopx(ibuf, &se1, v[0].bits) || se1 != se
117                  || memcmp(u.bits, v[0].bits, 10)))
118                         printf("***strtox and strtorx disagree!!\n:");
119                 printf("\nstrtox consumes %d bytes and returns %d\n",
120                                 (int)(se-ibuf), i);
121                 printf("with bits = #%x %x %x %x %x\n",
122                         u.bits[_0], u.bits[_1], u.bits[_2],
123                         u.bits[_3], u.bits[_4]);
124                 if (sizeof(long double) == 12)
125                         printf("printf(\"%%.21Lg\") gives %.21Lg\n", u.d);
126  fmt_test:
127                 se = g_xfmt(obuf, u.bits, ndig, sizeof(obuf));
128                 printf("g_xfmt(%d) gives %d bytes: \"%s\"\n\n",
129                         ndig, (int)(se-obuf), se ? obuf : "<null>");
130                 if (!dItry)
131                         continue;
132                 printf("strtoIx returns %d,",
133                         strtoIx(ibuf, &se, v[0].bits, v[1].bits));
134                 printf(" consuming %d bytes.\n", (int)(se-ibuf));
135                 if (!memcmp(v[0].bits, v[1].bits, 10)) {
136                         if (!memcmp(u.bits, v[0].bits, 10))
137                                 printf("fI[0] == fI[1] == strtox\n");
138                         else {
139                                 printf("fI[0] == fI[1] = #%x %x %x %x %x\n",
140                                         v[0].bits[_0], v[0].bits[_1],
141                                         v[0].bits[_2], v[0].bits[_3],
142                                         v[0].bits[_4]);
143                                 if (sizeof(long double) == 12)
144                                     printf("= %.21Lg\n", v[0].d);
145                                 }
146                         }
147                 else {
148                         printf("fI[0] = #%x %x %x %x %x\n",
149                                         v[0].bits[_0], v[0].bits[_1],
150                                         v[0].bits[_2], v[0].bits[_3],
151                                         v[0].bits[_4]);
152                         if (sizeof(long double) == 12)
153                                 printf("= %.21Lg\n", v[0].d);
154                         printf("fI[1] = #%x %x %x %x %x\n",
155                                         v[1].bits[_0], v[1].bits[_1],
156                                         v[1].bits[_2], v[1].bits[_3],
157                                         v[1].bits[_4]);
158                         if (sizeof(long double) == 12)
159                                 printf("= %.21Lg\n", v[1].d);
160                         if (!memcmp(v[0].bits, u.bits, 10))
161                                 printf("fI[0] == strtox\n");
162                         else if (!memcmp(v[1].bits, u.bits, 10))
163                                 printf("fI[1] == strtox\n");
164                         else
165                                 printf("**** Both differ from strtod ****\n");
166                         }
167                 printf("\n");
168                 }
169         return 0;
170         }