1 /*
2 * Copyright © 2005-2020 Rich Felker
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining
5 * a copy of this software and associated documentation files (the
6 * "Software"), to deal in the Software without restriction, including
7 * without limitation the rights to use, copy, modify, merge, publish,
8 * distribute, sublicense, and/or sell copies of the Software, and to
9 * permit persons to whom the Software is furnished to do so, subject to
10 * the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
18 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
19 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
20 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
21 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
22 */
23 #include <stdio.h>
24 #include <stdlib.h>
25 #include <string.h>
26 #include <errno.h>
27 #include <math.h>
28
29 /* r = place to store result
30 * f = function call to test (or any expression)
31 * x = expected result
32 * m = message to print on failure (with formats for r & x)
33 **/
34
35 #pragma GCC diagnostic ignored "-Wpragmas"
36 #pragma GCC diagnostic ignored "-Wunknown-warning-option"
37 #pragma GCC diagnostic ignored "-Wformat-extra-args"
38
39 #define TEST(r, f, x, m) ( \
40 msg = #f, ((r) = (f)) == (x) || \
41 (printf(__FILE__ ":%d: %s failed (" m ")\n", __LINE__, #f, r, x, r-x), err++, 0) )
42
43 #define TEST2(r, f, x, m) ( \
44 ((r) = (f)) == (x) || \
45 (printf(__FILE__ ":%d: %s failed (" m ")\n", __LINE__, msg, r, x), err++, 0) )
46
test_strtod(void)47 int test_strtod(void)
48 {
49 int i;
50 double d, d2;
51 char buf[1000];
52 char *msg="";
53 int err=0;
54
55 (void) msg;
56 for (i=0; i<100; i++) {
57 d = sin(i);
58 snprintf(buf, sizeof buf, "%.300f", d);
59 TEST(d2, strtod(buf, 0), d, "round trip fail %a != %a (%a)");
60 }
61
62 #if defined(__PICOLIBC__) && !defined(TINY_STDIO) && __SIZEOF_DOUBLE__ != 8
63 /* skip strtod tests for legacy stdio on systems with atypical doubles */
64 #else
65 TEST(d, strtod("0x1p4", 0), 16.0, "hex float %a != %a");
66 TEST(d, strtod("0x1.1p4", 0), 17.0, "hex float %a != %a");
67 #endif
68
69 return err;
70 }
71
72 #define TEST_NAME strtod
73 #include "testcase.h"
74
