1 /* $NetBSD: t_strtod.c,v 1.7 2011/04/12 02:56:20 jruoho Exp $ */ 2 3 /*- 4 * Copyright (c) 2011 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jukka Ruohonen. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* Public domain, Otto Moerbeek <otto@drijf.net>, 2006. */ 33 34 #include <sys/cdefs.h> 35 __RCSID("$NetBSD: t_strtod.c,v 1.7 2011/04/12 02:56:20 jruoho Exp $"); 36 37 #include <errno.h> 38 #include <math.h> 39 #include <stdio.h> 40 #include <stdlib.h> 41 #include <string.h> 42 43 #include <atf-c.h> 44 #include <atf-c/config.h> 45 46 ATF_TC(strtod_basic); 47 ATF_TC_HEAD(strtod_basic, tc) 48 { 49 atf_tc_set_md_var(tc, "descr", "A basic test of strtod(3)"); 50 } 51 52 ATF_TC_BODY(strtod_basic, tc) 53 { 54 char buf[512]; 55 size_t i, n; 56 double d; 57 58 n = 1024 * 1000; 59 60 for (i = 1; i < n; i = i + 1024) { 61 62 (void)snprintf(buf, sizeof(buf), "%zu.%zu", i, i + 1); 63 64 errno = 0; 65 d = strtod(buf, NULL); 66 67 ATF_REQUIRE(d > 0.0); 68 ATF_REQUIRE(errno == 0); 69 } 70 } 71 72 ATF_TC(strtod_hex); 73 ATF_TC_HEAD(strtod_hex, tc) 74 { 75 atf_tc_set_md_var(tc, "descr", "A strtod(3) with hexadecimals"); 76 } 77 78 ATF_TC_BODY(strtod_hex, tc) 79 { 80 const char *str; 81 char *end; 82 double d; 83 84 str = "-0x0"; 85 d = strtod(str, &end); /* -0.0 */ 86 87 ATF_REQUIRE(end == str + 4); 88 ATF_REQUIRE(signbit(d) != 0); 89 ATF_REQUIRE(fabs(d) < 1.0e-40); 90 91 str = "-0x"; 92 d = strtod(str, &end); /* -0.0 */ 93 94 ATF_REQUIRE(end == str + 2); 95 ATF_REQUIRE(signbit(d) != 0); 96 ATF_REQUIRE(fabs(d) < 1.0e-40); 97 } 98 99 ATF_TC(strtod_inf); 100 ATF_TC_HEAD(strtod_inf, tc) 101 { 102 atf_tc_set_md_var(tc, "descr", "A strtod(3) with INF"); 103 } 104 105 ATF_TC_BODY(strtod_inf, tc) 106 { 107 #ifndef __vax__ 108 109 long double ld; 110 double d; 111 float f; 112 113 /* 114 * See old PR lib/33262. 115 */ 116 d = strtod("INF", NULL); 117 ATF_REQUIRE(isinf(d) != 0); 118 119 f = strtof("INF", NULL); 120 ATF_REQUIRE(isinf(f) != 0); 121 122 ld = strtold("INF", NULL); 123 ATF_REQUIRE(isinf(ld) != 0); 124 #endif 125 } 126 127 ATF_TC(strtod_underflow); 128 ATF_TC_HEAD(strtod_underflow, tc) 129 { 130 atf_tc_set_md_var(tc, "descr", "Test underflow in strtod(3)"); 131 } 132 133 ATF_TC_BODY(strtod_underflow, tc) 134 { 135 136 const char *tmp = 137 "0.0000000000000000000000000000000000000000000000000000" 138 "000000000000000000000000000000000000000000000000000000" 139 "000000000000000000000000000000000000000000000000000000" 140 "000000000000000000000000000000000000000000000000000000" 141 "000000000000000000000000000000000000000000000000000000" 142 "000000000000000000000000000000000000000000000000000000" 143 "000000000000000000000000000000000000000000000000000000" 144 "000000000000000002"; 145 146 double d; 147 148 errno = 0; 149 d = strtod(tmp, NULL); 150 151 if (errno != ERANGE) 152 atf_tc_fail("strtod(3) did not detect underflow"); 153 } 154 155 ATF_TP_ADD_TCS(tp) 156 { 157 158 ATF_TP_ADD_TC(tp, strtod_basic); 159 ATF_TP_ADD_TC(tp, strtod_hex); 160 ATF_TP_ADD_TC(tp, strtod_inf); 161 ATF_TP_ADD_TC(tp, strtod_underflow); 162 163 return atf_no_error(); 164 } 165