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 * $FreeBSD: src/tools/regression/lib/msun/test-lround.c,v 1.2 2007/12/09 20:16:48 das Exp $ 27 */ 28 29 /* 30 * Test for lround(), lroundf(), llround(), and llroundf(). 31 */ 32 33 #include <assert.h> 34 #include <fenv.h> 35 #include <limits.h> 36 #include <math.h> 37 #include <stdio.h> 38 39 /* 40 * XXX The volatile here is to avoid gcc's bogus constant folding and work 41 * around the lack of support for the FENV_ACCESS pragma. 42 */ 43 #define test(func, x, result, excepts) do { \ 44 volatile double _d = x; \ 45 assert(feclearexcept(FE_ALL_EXCEPT) == 0); \ 46 assert((func)(_d) == (result) || fetestexcept(FE_INVALID)); \ 47 assert(fetestexcept(FE_ALL_EXCEPT) == (excepts)); \ 48 } while (0) 49 50 #define testall(x, result, excepts) do { \ 51 test(lround, x, result, excepts); \ 52 test(lroundf, x, result, excepts); \ 53 test(llround, x, result, excepts); \ 54 test(llroundf, x, result, excepts); \ 55 } while (0) 56 57 #define IGNORE 0 58 59 #pragma STDC FENV_ACCESS ON 60 61 int 62 main(int argc, char *argv[]) 63 { 64 65 printf("1..1\n"); 66 67 testall(0.0, 0, 0); 68 testall(0.25, 0, FE_INEXACT); 69 testall(0.5, 1, FE_INEXACT); 70 testall(-0.5, -1, FE_INEXACT); 71 testall(1.0, 1, 0); 72 testall(0x12345000p0, 0x12345000, 0); 73 testall(0x1234.fp0, 0x1235, FE_INEXACT); 74 testall(INFINITY, IGNORE, FE_INVALID); 75 testall(NAN, IGNORE, FE_INVALID); 76 77 #if (LONG_MAX == 0x7fffffffl) 78 test(lround, 0x7fffffff.8p0, IGNORE, FE_INVALID); 79 test(lround, -0x80000000.8p0, IGNORE, FE_INVALID); 80 test(lround, 0x80000000.0p0, IGNORE, FE_INVALID); 81 test(lround, 0x7fffffff.4p0, 0x7fffffffl, FE_INEXACT); 82 test(lround, -0x80000000.4p0, -0x80000000l, FE_INEXACT); 83 test(lroundf, 0x80000000.0p0f, IGNORE, FE_INVALID); 84 test(lroundf, 0x7fffff80.0p0f, 0x7fffff80l, 0); 85 #elif (LONG_MAX == 0x7fffffffffffffffll) 86 test(lround, 0x8000000000000000.0p0, IGNORE, FE_INVALID); 87 test(lroundf, 0x8000000000000000.0p0f, IGNORE, FE_INVALID); 88 test(lround, 0x7ffffffffffffc00.0p0, 0x7ffffffffffffc00l, 0); 89 test(lroundf, 0x7fffff8000000000.0p0f, 0x7fffff8000000000l, 0); 90 test(lround, -0x8000000000000800.0p0, IGNORE, FE_INVALID); 91 test(lroundf, -0x8000010000000000.0p0f, IGNORE, FE_INVALID); 92 test(lround, -0x8000000000000000.0p0, -0x8000000000000000l, 0); 93 test(lroundf, -0x8000000000000000.0p0f, -0x8000000000000000l, 0); 94 #else 95 #error "Unsupported long size" 96 #endif 97 98 #if (LLONG_MAX == 0x7fffffffffffffffLL) 99 test(llround, 0x8000000000000000.0p0, IGNORE, FE_INVALID); 100 test(llroundf, 0x8000000000000000.0p0f, IGNORE, FE_INVALID); 101 test(llround, 0x7ffffffffffffc00.0p0, 0x7ffffffffffffc00ll, 0); 102 test(llroundf, 0x7fffff8000000000.0p0f, 0x7fffff8000000000ll, 0); 103 test(llround, -0x8000000000000800.0p0, IGNORE, FE_INVALID); 104 test(llroundf, -0x8000010000000000.0p0f, IGNORE, FE_INVALID); 105 test(llround, -0x8000000000000000.0p0, -0x8000000000000000ll, 0); 106 test(llroundf, -0x8000000000000000.0p0f, -0x8000000000000000ll, 0); 107 #else 108 #error "Unsupported long long size" 109 #endif 110 111 printf("ok 1 - lround\n"); 112 113 return (0); 114 } 115