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