1/* $OpenBSD: lrint_test.c,v 1.5 2021/12/13 18:04:28 deraadt Exp $ */ 2/*- 3 * Copyright (c) 2005-2008 David Schultz <das@FreeBSD.org> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28/* 29 * Test for lrint(), lrintf(), llrint(), and llrintf(). 30 */ 31 32#include <fenv.h> 33#include <limits.h> 34#include <math.h> 35#include <stdio.h> 36 37#include "test-utils.h" 38 39#define test(func, x, result, excepts) do { \ 40 ATF_CHECK(feclearexcept(FE_ALL_EXCEPT) == 0); \ 41 long long _r = (func)(x); \ 42 ATF_CHECK_MSG(_r == (result) || fetestexcept(FE_INVALID), \ 43 #func "(%Lg) returned %lld, expected %lld", (long double)x, _r, \ 44 (long long)(result)); \ 45 CHECK_FP_EXCEPTIONS_MSG(excepts, FE_ALL_EXCEPT & ALL_STD_EXCEPT, \ 46 "for %s(%s)", #func, #x); \ 47} while (0) 48 49#define testall(x, result, excepts) do { \ 50 test(lrint, x, result, excepts); \ 51 test(lrintf, x, result, excepts); \ 52 test(lrintl, x, result, excepts); \ 53 test(llrint, x, result, excepts); \ 54 test(llrintf, x, result, excepts); \ 55 test(llrintl, x, result, excepts); \ 56} while (0) 57 58#define IGNORE 0 59 60#pragma STDC FENV_ACCESS ON 61 62static void 63run_tests(void) 64{ 65 ATF_REQUIRE_EQ(0, fesetround(FE_DOWNWARD)); 66 testall(0.75, 0, FE_INEXACT); 67 testall(-0.5, -1, FE_INEXACT); 68 69 ATF_REQUIRE_EQ(0, fesetround(FE_TONEAREST)); 70 testall(0.0, 0, 0); 71 testall(0.25, 0, FE_INEXACT); 72 testall(0.5, 0, FE_INEXACT); 73 testall(-2.5, -2, FE_INEXACT); 74 testall(1.0, 1, 0); 75 testall(0x12345000p0, 0x12345000, 0); 76 testall(0x1234.fp0, 0x1235, FE_INEXACT); 77 testall(INFINITY, IGNORE, FE_INVALID); 78 testall(NAN, IGNORE, FE_INVALID); 79 80#if (LONG_MAX == 0x7fffffffl) 81 ATF_REQUIRE_EQ(0, fesetround(FE_UPWARD)); 82 test(lrint, 0x7fffffff.8p0, IGNORE, FE_INVALID); 83 test(lrint, -0x80000000.4p0, (long)-0x80000000l, FE_INEXACT); 84 85 ATF_REQUIRE_EQ(0, fesetround(FE_DOWNWARD)); 86 test(lrint, -0x80000000.8p0, IGNORE, FE_INVALID); 87 test(lrint, 0x80000000.0p0, IGNORE, FE_INVALID); 88 test(lrint, 0x7fffffff.4p0, 0x7fffffffl, FE_INEXACT); 89 test(lrintf, 0x80000000.0p0f, IGNORE, FE_INVALID); 90 test(lrintf, 0x7fffff80.0p0f, 0x7fffff80l, 0); 91 92 ATF_REQUIRE_EQ(0, fesetround(FE_TOWARDZERO)); 93 test(lrint, 0x7fffffff.8p0, 0x7fffffffl, FE_INEXACT); 94 test(lrint, -0x80000000.8p0, -0x80000000l, FE_INEXACT); 95 test(lrint, 0x80000000.0p0, IGNORE, FE_INVALID); 96 test(lrintf, 0x80000000.0p0f, IGNORE, FE_INVALID); 97 test(lrintf, 0x7fffff80.0p0f, 0x7fffff80l, 0); 98#elif (LONG_MAX == 0x7fffffffffffffffll) 99 ATF_REQUIRE_EQ(0, fesetround(FE_TONEAREST)); 100 test(lrint, 0x8000000000000000.0p0, IGNORE, FE_INVALID); 101 test(lrintf, 0x8000000000000000.0p0f, IGNORE, FE_INVALID); 102 test(lrint, 0x7ffffffffffffc00.0p0, 0x7ffffffffffffc00l, 0); 103 test(lrintf, 0x7fffff8000000000.0p0f, 0x7fffff8000000000l, 0); 104 test(lrint, -0x8000000000000800.0p0, IGNORE, FE_INVALID); 105 test(lrintf, -0x8000010000000000.0p0f, IGNORE, FE_INVALID); 106 test(lrint, -0x8000000000000000.0p0, (long long)-0x8000000000000000ul, 0); 107 test(lrintf, -0x8000000000000000.0p0f, (long long)-0x8000000000000000ul, 0); 108#else 109#error "Unsupported long size" 110#endif 111 112#if (LLONG_MAX == 0x7fffffffffffffffLL) 113 ATF_REQUIRE_EQ(0, fesetround(FE_TONEAREST)); 114 test(llrint, 0x8000000000000000.0p0, IGNORE, FE_INVALID); 115 test(llrintf, 0x8000000000000000.0p0f, IGNORE, FE_INVALID); 116 test(llrint, 0x7ffffffffffffc00.0p0, 0x7ffffffffffffc00ll, 0); 117 test(llrintf, 0x7fffff8000000000.0p0f, 0x7fffff8000000000ll, 0); 118 test(llrint, -0x8000000000000800.0p0, IGNORE, FE_INVALID); 119 test(llrintf, -0x8000010000000000.0p0f, IGNORE, FE_INVALID); 120 test(llrint, -0x8000000000000000.0p0, (long long)-0x8000000000000000ull, 0); 121 test(llrintf, -0x8000000000000000.0p0f, (long long)-0x8000000000000000ull, 0); 122#else 123#error "Unsupported long long size" 124#endif 125} 126 127ATF_TC_WITHOUT_HEAD(lrint); 128ATF_TC_BODY(lrint, tc) 129{ 130 run_tests(); 131#ifndef __OpenBSD__ 132#ifdef __i386__ 133 fpsetprec(FP_PE); 134 run_tests(); 135#endif 136#endif 137} 138 139ATF_TP_ADD_TCS(tp) 140{ 141 ATF_TP_ADD_TC(tp, lrint); 142 return (atf_no_error()); 143} 144