1 /* $NetBSD: t_infinity.c,v 1.1 2011/04/11 10:51:36 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 2002, 2008 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Martin Husemann <martin@NetBSD.org>. 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 #include <sys/cdefs.h> 32 __RCSID("$NetBSD: t_infinity.c,v 1.1 2011/04/11 10:51:36 martin Exp $"); 33 34 #include <atf-c.h> 35 #include <math.h> 36 #include <float.h> 37 38 ATF_TC(infinity_float); 39 ATF_TC_HEAD(infinity_float, tc) 40 { 41 atf_tc_set_md_var(tc, "descr", 42 "check FPU generated infinite float values"); 43 } 44 45 ATF_TC_BODY(infinity_float, tc) 46 { 47 float v; 48 49 v = FLT_MAX; 50 v *= v; 51 ATF_REQUIRE(isinf(v)); 52 ATF_REQUIRE(fpclassify(v) == FP_INFINITE); 53 54 v = -FLT_MAX; 55 v *= v; 56 ATF_REQUIRE(isinf(v)); 57 ATF_REQUIRE(fpclassify(v) == FP_INFINITE); 58 } 59 60 ATF_TC(infinity_double); 61 ATF_TC_HEAD(infinity_double, tc) 62 { 63 atf_tc_set_md_var(tc, "descr", 64 "check FPU generated infinite double values"); 65 } 66 67 ATF_TC_BODY(infinity_double, tc) 68 { 69 double v; 70 71 v = DBL_MAX; 72 v *= v; 73 ATF_REQUIRE(isinf(v)); 74 ATF_REQUIRE(fpclassify(v) == FP_INFINITE); 75 76 v = -DBL_MAX; 77 v *= v; 78 ATF_REQUIRE(isinf(v)); 79 ATF_REQUIRE(fpclassify(v) == FP_INFINITE); 80 } 81 82 ATF_TC(infinity_long_double); 83 ATF_TC_HEAD(infinity_long_double, tc) 84 { 85 atf_tc_set_md_var(tc, "descr", 86 "check FPU generated infinite long double values"); 87 } 88 89 ATF_TC_BODY(infinity_long_double, tc) 90 { 91 #ifndef LDBL_MAX 92 atf_tc_skip("no long double support on this architecture"); 93 return; 94 #else 95 long double v; 96 97 v = LDBL_MAX; 98 v *= v; 99 ATF_REQUIRE(isinf(v)); 100 ATF_REQUIRE(fpclassify(v) == FP_INFINITE); 101 102 v = -LDBL_MAX; 103 v *= v; 104 ATF_REQUIRE(isinf(v)); 105 ATF_REQUIRE(fpclassify(v) == FP_INFINITE); 106 #endif 107 } 108 109 ATF_TP_ADD_TCS(tp) 110 { 111 112 ATF_TP_ADD_TC(tp, infinity_float); 113 ATF_TP_ADD_TC(tp, infinity_double); 114 ATF_TP_ADD_TC(tp, infinity_long_double); 115 116 return atf_no_error(); 117 } 118