1 /*- 2 * Copyright (c) 2005 David Schultz <das@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 /* 28 * Test for lround(), lroundf(), llround(), and llroundf(). 29 */ 30 31 #include <sys/cdefs.h> 32 __FBSDID("$FreeBSD$"); 33 34 #include <fenv.h> 35 #include <limits.h> 36 #include <math.h> 37 #include <stdio.h> 38 39 #include "test-utils.h" 40 41 #define IGNORE 0x12345 42 43 /* 44 * XXX The volatile here is to avoid gcc's bogus constant folding and work 45 * around the lack of support for the FENV_ACCESS pragma. 46 */ 47 #define test(func, x, result, excepts) do { \ 48 volatile double _d = x; \ 49 ATF_REQUIRE_EQ(0, feclearexcept(FE_ALL_EXCEPT)); \ 50 volatile double _r = (func)(_d); \ 51 CHECK_FP_EXCEPTIONS_MSG(excepts, FE_ALL_EXCEPT, "for %s(%s)", \ 52 #func, #x); \ 53 if ((excepts & FE_INVALID) != 0) { \ 54 ATF_REQUIRE_EQ(result, IGNORE); \ 55 ATF_CHECK_EQ_MSG(FE_INVALID, fetestexcept(FE_INVALID), \ 56 "FE_INVALID not set correctly for %s(%s)", #func, #x); \ 57 } else { \ 58 ATF_REQUIRE_MSG(result != IGNORE, "Expected can't be IGNORE!"); \ 59 ATF_REQUIRE_EQ(result, (__STRING(func(_d)), _r)); \ 60 } \ 61 } while (0) 62 63 #define testall(x, result, excepts) do { \ 64 test(lround, x, result, excepts); \ 65 test(lroundf, x, result, excepts); \ 66 test(llround, x, result, excepts); \ 67 test(llroundf, x, result, excepts); \ 68 } while (0) 69 70 #pragma STDC FENV_ACCESS ON 71 72 ATF_TC_WITHOUT_HEAD(main); 73 ATF_TC_BODY(main, tc) 74 { 75 testall(0.0, 0, 0); 76 testall(0.25, 0, FE_INEXACT); 77 testall(0.5, 1, FE_INEXACT); 78 testall(-0.5, -1, FE_INEXACT); 79 testall(1.0, 1, 0); 80 testall(0x12345000p0, 0x12345000, 0); 81 testall(0x1234.fp0, 0x1235, FE_INEXACT); 82 testall(INFINITY, IGNORE, FE_INVALID); 83 testall(NAN, IGNORE, FE_INVALID); 84 85 #if (LONG_MAX == 0x7fffffffl) 86 test(lround, 0x7fffffff.8p0, IGNORE, FE_INVALID); 87 test(lround, -0x80000000.8p0, IGNORE, FE_INVALID); 88 test(lround, 0x80000000.0p0, IGNORE, FE_INVALID); 89 test(lround, 0x7fffffff.4p0, 0x7fffffffl, FE_INEXACT); 90 test(lround, -0x80000000.4p0, -0x80000000l, FE_INEXACT); 91 test(lroundf, 0x80000000.0p0f, IGNORE, FE_INVALID); 92 test(lroundf, 0x7fffff80.0p0f, 0x7fffff80l, 0); 93 #elif (LONG_MAX == 0x7fffffffffffffffll) 94 test(lround, 0x8000000000000000.0p0, IGNORE, FE_INVALID); 95 test(lroundf, 0x8000000000000000.0p0f, IGNORE, FE_INVALID); 96 test(lround, 0x7ffffffffffffc00.0p0, 0x7ffffffffffffc00l, 0); 97 test(lroundf, 0x7fffff8000000000.0p0f, 0x7fffff8000000000l, 0); 98 test(lround, -0x8000000000000800.0p0, IGNORE, FE_INVALID); 99 test(lroundf, -0x8000010000000000.0p0f, IGNORE, FE_INVALID); 100 test(lround, -0x8000000000000000.0p0, (long)-0x8000000000000000l, 0); 101 test(lroundf, -0x8000000000000000.0p0f, (long)-0x8000000000000000l, 0); 102 #else 103 #error "Unsupported long size" 104 #endif 105 106 #if (LLONG_MAX == 0x7fffffffffffffffLL) 107 test(llround, 0x8000000000000000.0p0, IGNORE, FE_INVALID); 108 test(llroundf, 0x8000000000000000.0p0f, IGNORE, FE_INVALID); 109 test(llround, 0x7ffffffffffffc00.0p0, 0x7ffffffffffffc00ll, 0); 110 test(llroundf, 0x7fffff8000000000.0p0f, 0x7fffff8000000000ll, 0); 111 test(llround, -0x8000000000000800.0p0, IGNORE, FE_INVALID); 112 test(llroundf, -0x8000010000000000.0p0f, IGNORE, FE_INVALID); 113 test(llround, -0x8000000000000000.0p0, (long long)-0x8000000000000000ll, 0); 114 test(llroundf, -0x8000000000000000.0p0f, (long long)-0x8000000000000000ll, 0); 115 #else 116 #error "Unsupported long long size" 117 #endif 118 } 119 120 ATF_TP_ADD_TCS(tp) 121 { 122 ATF_TP_ADD_TC(tp, main); 123 124 return (atf_no_error()); 125 } 126