1 /*- 2 * Copyright (c) 2005-2008 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 * $FreeBSD: src/tools/regression/lib/msun/test-lrint.c,v 1.3 2010/12/06 00:19:56 das Exp $ 27 */ 28 29 /* 30 * Test for lrint(), lrintf(), llrint(), and llrintf(). 31 */ 32 33 #include <assert.h> 34 #include <fenv.h> 35 #include <limits.h> 36 #include <math.h> 37 #include <stdio.h> 38 39 #ifdef __i386__ 40 #include <ieeefp.h> 41 #endif 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 assert(feclearexcept(FE_ALL_EXCEPT) == 0); \ 50 assert((func)(_d) == (result) || fetestexcept(FE_INVALID)); \ 51 assert(fetestexcept(FE_ALL_EXCEPT) == (excepts)); \ 52 } while (0) 53 54 #define testall(x, result, excepts) do { \ 55 test(lrint, x, result, excepts); \ 56 test(lrintf, x, result, excepts); \ 57 test(lrintl, x, result, excepts); \ 58 test(llrint, x, result, excepts); \ 59 test(llrintf, x, result, excepts); \ 60 test(llrintl, x, result, excepts); \ 61 } while (0) 62 63 #define IGNORE 0 64 65 #pragma STDC FENV_ACCESS ON 66 67 void 68 run_tests(void) 69 { 70 71 assert(fesetround(FE_DOWNWARD) == 0); 72 testall(0.75, 0, FE_INEXACT); 73 testall(-0.5, -1, FE_INEXACT); 74 75 assert(fesetround(FE_TONEAREST) == 0); 76 testall(0.0, 0, 0); 77 testall(0.25, 0, FE_INEXACT); 78 testall(0.5, 0, FE_INEXACT); 79 testall(-2.5, -2, FE_INEXACT); 80 testall(1.0, 1, 0); 81 testall(0x12345000p0, 0x12345000, 0); 82 testall(0x1234.fp0, 0x1235, FE_INEXACT); 83 testall(INFINITY, IGNORE, FE_INVALID); 84 testall(NAN, IGNORE, FE_INVALID); 85 86 #if (LONG_MAX == 0x7fffffffl) 87 assert(fesetround(FE_UPWARD) == 0); 88 test(lrint, 0x7fffffff.8p0, IGNORE, FE_INVALID); 89 test(lrint, -0x80000000.4p0, -0x80000000l, FE_INEXACT); 90 91 assert(fesetround(FE_DOWNWARD) == 0); 92 test(lrint, -0x80000000.8p0, IGNORE, FE_INVALID); 93 test(lrint, 0x80000000.0p0, IGNORE, FE_INVALID); 94 test(lrint, 0x7fffffff.4p0, 0x7fffffffl, FE_INEXACT); 95 test(lrintf, 0x80000000.0p0f, IGNORE, FE_INVALID); 96 test(lrintf, 0x7fffff80.0p0f, 0x7fffff80l, 0); 97 98 assert(fesetround(FE_TOWARDZERO) == 0); 99 test(lrint, 0x7fffffff.8p0, 0x7fffffffl, FE_INEXACT); 100 test(lrint, -0x80000000.8p0, -0x80000000l, FE_INEXACT); 101 test(lrint, 0x80000000.0p0, IGNORE, FE_INVALID); 102 test(lrintf, 0x80000000.0p0f, IGNORE, FE_INVALID); 103 test(lrintf, 0x7fffff80.0p0f, 0x7fffff80l, 0); 104 #elif (LONG_MAX == 0x7fffffffffffffffll) 105 assert(fesetround(FE_TONEAREST) == 0); 106 test(lrint, 0x8000000000000000.0p0, IGNORE, FE_INVALID); 107 test(lrintf, 0x8000000000000000.0p0f, IGNORE, FE_INVALID); 108 test(lrint, 0x7ffffffffffffc00.0p0, 0x7ffffffffffffc00l, 0); 109 test(lrintf, 0x7fffff8000000000.0p0f, 0x7fffff8000000000l, 0); 110 test(lrint, -0x8000000000000800.0p0, IGNORE, FE_INVALID); 111 test(lrintf, -0x8000010000000000.0p0f, IGNORE, FE_INVALID); 112 test(lrint, -0x8000000000000000.0p0, -0x8000000000000000l, 0); 113 test(lrintf, -0x8000000000000000.0p0f, -0x8000000000000000l, 0); 114 #else 115 #error "Unsupported long size" 116 #endif 117 118 #if (LLONG_MAX == 0x7fffffffffffffffLL) 119 assert(fesetround(FE_TONEAREST) == 0); 120 test(llrint, 0x8000000000000000.0p0, IGNORE, FE_INVALID); 121 test(llrintf, 0x8000000000000000.0p0f, IGNORE, FE_INVALID); 122 test(llrint, 0x7ffffffffffffc00.0p0, 0x7ffffffffffffc00ll, 0); 123 test(llrintf, 0x7fffff8000000000.0p0f, 0x7fffff8000000000ll, 0); 124 test(llrint, -0x8000000000000800.0p0, IGNORE, FE_INVALID); 125 test(llrintf, -0x8000010000000000.0p0f, IGNORE, FE_INVALID); 126 test(llrint, -0x8000000000000000.0p0, -0x8000000000000000ll, 0); 127 test(llrintf, -0x8000000000000000.0p0f, -0x8000000000000000ll, 0); 128 #else 129 #error "Unsupported long long size" 130 #endif 131 } 132 133 int 134 main(int argc, char *argv[]) 135 { 136 137 printf("1..1\n"); 138 139 run_tests(); 140 #ifdef __i386__ 141 fpsetprec(FP_PE); 142 run_tests(); 143 #endif 144 145 printf("ok 1 - lrint\n"); 146 147 return (0); 148 } 149