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 27 /* 28 * Test for lrint(), lrintf(), llrint(), and llrintf(). 29 */ 30 31 #include <sys/cdefs.h> 32 __FBSDID("$FreeBSD$"); 33 34 #include <assert.h> 35 #include <fenv.h> 36 #include <limits.h> 37 #include <math.h> 38 #include <stdio.h> 39 40 #ifdef __i386__ 41 #include <ieeefp.h> 42 #endif 43 44 #include "test-utils.h" 45 46 /* 47 * XXX The volatile here is to avoid gcc's bogus constant folding and work 48 * around the lack of support for the FENV_ACCESS pragma. 49 */ 50 #define test(func, x, result, excepts) do { \ 51 volatile double _d = x; \ 52 assert(feclearexcept(FE_ALL_EXCEPT) == 0); \ 53 assert((func)(_d) == (result) || fetestexcept(FE_INVALID)); \ 54 assert((fetestexcept(FE_ALL_EXCEPT) & ALL_STD_EXCEPT) \ 55 == (excepts)); \ 56 } while (0) 57 58 #define testall(x, result, excepts) do { \ 59 test(lrint, x, result, excepts); \ 60 test(lrintf, x, result, excepts); \ 61 test(lrintl, x, result, excepts); \ 62 test(llrint, x, result, excepts); \ 63 test(llrintf, x, result, excepts); \ 64 test(llrintl, x, result, excepts); \ 65 } while (0) 66 67 #define IGNORE 0 68 69 #pragma STDC FENV_ACCESS ON 70 71 static void 72 run_tests(void) 73 { 74 75 assert(fesetround(FE_DOWNWARD) == 0); 76 testall(0.75, 0, FE_INEXACT); 77 testall(-0.5, -1, FE_INEXACT); 78 79 assert(fesetround(FE_TONEAREST) == 0); 80 testall(0.0, 0, 0); 81 testall(0.25, 0, FE_INEXACT); 82 testall(0.5, 0, FE_INEXACT); 83 testall(-2.5, -2, FE_INEXACT); 84 testall(1.0, 1, 0); 85 testall(0x12345000p0, 0x12345000, 0); 86 testall(0x1234.fp0, 0x1235, FE_INEXACT); 87 testall(INFINITY, IGNORE, FE_INVALID); 88 testall(NAN, IGNORE, FE_INVALID); 89 90 #if (LONG_MAX == 0x7fffffffl) 91 assert(fesetround(FE_UPWARD) == 0); 92 test(lrint, 0x7fffffff.8p0, IGNORE, FE_INVALID); 93 test(lrint, -0x80000000.4p0, -0x80000000l, FE_INEXACT); 94 95 assert(fesetround(FE_DOWNWARD) == 0); 96 test(lrint, -0x80000000.8p0, IGNORE, FE_INVALID); 97 test(lrint, 0x80000000.0p0, IGNORE, FE_INVALID); 98 test(lrint, 0x7fffffff.4p0, 0x7fffffffl, FE_INEXACT); 99 test(lrintf, 0x80000000.0p0f, IGNORE, FE_INVALID); 100 test(lrintf, 0x7fffff80.0p0f, 0x7fffff80l, 0); 101 102 assert(fesetround(FE_TOWARDZERO) == 0); 103 test(lrint, 0x7fffffff.8p0, 0x7fffffffl, FE_INEXACT); 104 test(lrint, -0x80000000.8p0, -0x80000000l, FE_INEXACT); 105 test(lrint, 0x80000000.0p0, IGNORE, FE_INVALID); 106 test(lrintf, 0x80000000.0p0f, IGNORE, FE_INVALID); 107 test(lrintf, 0x7fffff80.0p0f, 0x7fffff80l, 0); 108 #elif (LONG_MAX == 0x7fffffffffffffffll) 109 assert(fesetround(FE_TONEAREST) == 0); 110 test(lrint, 0x8000000000000000.0p0, IGNORE, FE_INVALID); 111 test(lrintf, 0x8000000000000000.0p0f, IGNORE, FE_INVALID); 112 test(lrint, 0x7ffffffffffffc00.0p0, 0x7ffffffffffffc00l, 0); 113 test(lrintf, 0x7fffff8000000000.0p0f, 0x7fffff8000000000l, 0); 114 test(lrint, -0x8000000000000800.0p0, IGNORE, FE_INVALID); 115 test(lrintf, -0x8000010000000000.0p0f, IGNORE, FE_INVALID); 116 test(lrint, -0x8000000000000000.0p0, -0x8000000000000000l, 0); 117 test(lrintf, -0x8000000000000000.0p0f, -0x8000000000000000l, 0); 118 #else 119 #error "Unsupported long size" 120 #endif 121 122 #if (LLONG_MAX == 0x7fffffffffffffffLL) 123 assert(fesetround(FE_TONEAREST) == 0); 124 test(llrint, 0x8000000000000000.0p0, IGNORE, FE_INVALID); 125 test(llrintf, 0x8000000000000000.0p0f, IGNORE, FE_INVALID); 126 test(llrint, 0x7ffffffffffffc00.0p0, 0x7ffffffffffffc00ll, 0); 127 test(llrintf, 0x7fffff8000000000.0p0f, 0x7fffff8000000000ll, 0); 128 test(llrint, -0x8000000000000800.0p0, IGNORE, FE_INVALID); 129 test(llrintf, -0x8000010000000000.0p0f, IGNORE, FE_INVALID); 130 test(llrint, -0x8000000000000000.0p0, -0x8000000000000000ll, 0); 131 test(llrintf, -0x8000000000000000.0p0f, -0x8000000000000000ll, 0); 132 #else 133 #error "Unsupported long long size" 134 #endif 135 } 136 137 int 138 main(void) 139 { 140 141 printf("1..1\n"); 142 143 run_tests(); 144 #ifdef __i386__ 145 fpsetprec(FP_PE); 146 run_tests(); 147 #endif 148 149 printf("ok 1 - lrint\n"); 150 151 return (0); 152 } 153