1/****************************************************************
2
3The author of this software is David M. Gay.
4
5Copyright (C) 2001 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/* Test strtod.  */
33
34/* On stdin, read triples: d x y:
35 *	d = decimal string
36 *	x = high-order Hex value expected from strtod
37 *	y = low-order Hex value
38 * Complain about errors.
39 */
40
41#include "gdtoa.h"	/* for ULong */
42#include <stdio.h>
43#include <stdlib.h>
44#include <string.h>
45
46 static int W0, W1;
47 typedef union {
48		double d;
49		ULong L[2];
50		} U;
51
52#define UL (unsigned long)
53
54 static int
55process(char *fname, FILE *f)
56{
57	U a, b;
58	char buf[2048];
59	char *s, *s1, *se;
60	int line, n;
61
62	line = n = 0;
63
64 top:
65	while(fgets(s = buf, sizeof(buf), f)) {
66		line++;
67		while(*s <= ' ')
68			if (!*s++)
69				goto top; /* break 2 */
70		if (*s == '#')
71			continue;
72		while(*s > ' ')
73			s++;
74		/* if (sscanf(s,"\t%lx\t%lx", &a.L[0], &a.L[1]) != 2) */
75		if ((a.L[0] = (ULong)strtoul(s, &s1,16), s1 <= s)
76		 || (a.L[1] = (ULong)strtoul(s1,&se,16), se <= s1)) {
77			printf("Badly formatted line %d of %s\n",
78				line, fname);
79			n++;
80			continue;
81			}
82		b.d = strtod(buf,0);
83		if (b.L[W0] != a.L[0] || b.L[W1] != a.L[1]) {
84			n++;
85			printf("Line %d of %s: got %lx %lx; expected %lx %lx\n",
86				line, fname, UL b.L[W0], UL b.L[W1], UL a.L[0], UL a.L[1]);
87			}
88		}
89	return n;
90	}
91
92 int
93main(int argc, char **argv)
94{
95	FILE *f;
96	char *prog, *s;
97	int n, rc;
98	U u;
99
100	prog = argv[0];
101	if (argc == 2 && !strcmp(argv[1],"-?")) {
102		fprintf(stderr, "Usage: %s [file [file...]]\n"
103			"\tto read data file(s) of tab-separated triples d x y with\n"
104			"\t\td decimal string\n"
105			"\t\tx = high-order Hex value expected from strtod\n"
106			"\t\ty = low-order Hex value\n"
107			"\tComplain about errors by strtod.\n"
108			"\tIf no files, read triples from stdin.\n",
109			prog);
110		return 0;
111		}
112
113	/* determine endian-ness */
114
115	u.d = 1.;
116	W0 = u.L[0] == 0;
117	W1 = 1 - W0;
118
119	/* test */
120
121	n = rc = 0;
122	if (argc <= 1)
123		n = process("<stdin>", stdin);
124	else
125		while((s = *++argv))
126			if ((f = fopen(s,"r"))) {
127				n += process(s, f);
128				fclose(f);
129				}
130			else {
131				rc = 2;
132				fprintf(stderr, "Cannot open %s\n", s);
133				}
134	printf("%d bad conversions\n", n);
135	if (n)
136		rc |= 1;
137	return rc;
138	}
139