1 /****************************************************************
3 The author of this software is David M. Gay.
5 Copyright (C) 1998-2001 by Lucent Technologies
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
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
27 ****************************************************************/
29 /* Please send bug reports to David M. Gay (dmg at acm dot org,
30 * with " at " changed at "@" and " dot " changed to "."). */
32 /* Test program for g_xfmt, strtoIx, strtopx, and strtorx.
38 * #hex0 hex1 hex2 hex3 hex4
40 * rounding_mode values:
43 * 2 = toward +Infinity
44 * 3 = toward -Infinity
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.
57 extern int getround ANSI((int,char*));
59 static char ibuf[2048], obuf[2048];
64 /* one or the other of IEEE_MC68k or IEEE_8087 should be #defined */
85 int i, dItry, ndig = 0, r = 1;
86 union { long double d; UShort bits[5]; } u, v[2];
88 while(s = fgets(ibuf, sizeof(ibuf), stdin)) {
99 if (i <= ' ' || i >= '0' && i <= '9') {
105 sscanf(s+1, "%hx %hx %hx %hx %hx", &u.bits[_0],
106 &u.bits[_1], &u.bits[_2], &u.bits[_3],
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]);
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",
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);
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>");
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");
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],
143 if (sizeof(long double) == 12)
144 printf("= %.21Lg\n", v[0].d);
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],
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],
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");
165 printf("**** Both differ from strtod ****\n");