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 27 /* 28 * Test for lround(), lroundf(), llround(), and llroundf(). 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 /* 41 * XXX The volatile here is to avoid gcc's bogus constant folding and work 42 * around the lack of support for the FENV_ACCESS pragma. 43 */ 44 #define test(func, x, result, excepts) do { \ 45 volatile double _d = x; \ 46 assert(feclearexcept(FE_ALL_EXCEPT) == 0); \ 47 assert((func)(_d) == (result) || fetestexcept(FE_INVALID)); \ 48 assert(fetestexcept(FE_ALL_EXCEPT) == (excepts)); \ 49 } while (0) 50 51 #define testall(x, result, excepts) do { \ 52 test(lround, x, result, excepts); \ 53 test(lroundf, x, result, excepts); \ 54 test(llround, x, result, excepts); \ 55 test(llroundf, x, result, excepts); \ 56 } while (0) 57 58 #define IGNORE 0 59 60 #pragma STDC FENV_ACCESS ON 61 62 int 63 main(int argc, char *argv[]) 64 { 65 66 printf("1..1\n"); 67 68 testall(0.0, 0, 0); 69 testall(0.25, 0, FE_INEXACT); 70 testall(0.5, 1, FE_INEXACT); 71 testall(-0.5, -1, FE_INEXACT); 72 testall(1.0, 1, 0); 73 testall(0x12345000p0, 0x12345000, 0); 74 testall(0x1234.fp0, 0x1235, FE_INEXACT); 75 testall(INFINITY, IGNORE, FE_INVALID); 76 testall(NAN, IGNORE, FE_INVALID); 77 78 #if (LONG_MAX == 0x7fffffffl) 79 test(lround, 0x7fffffff.8p0, IGNORE, FE_INVALID); 80 test(lround, -0x80000000.8p0, IGNORE, FE_INVALID); 81 test(lround, 0x80000000.0p0, IGNORE, FE_INVALID); 82 test(lround, 0x7fffffff.4p0, 0x7fffffffl, FE_INEXACT); 83 test(lround, -0x80000000.4p0, -0x80000000l, FE_INEXACT); 84 test(lroundf, 0x80000000.0p0f, IGNORE, FE_INVALID); 85 test(lroundf, 0x7fffff80.0p0f, 0x7fffff80l, 0); 86 #elif (LONG_MAX == 0x7fffffffffffffffll) 87 test(lround, 0x8000000000000000.0p0, IGNORE, FE_INVALID); 88 test(lroundf, 0x8000000000000000.0p0f, IGNORE, FE_INVALID); 89 test(lround, 0x7ffffffffffffc00.0p0, 0x7ffffffffffffc00l, 0); 90 test(lroundf, 0x7fffff8000000000.0p0f, 0x7fffff8000000000l, 0); 91 test(lround, -0x8000000000000800.0p0, IGNORE, FE_INVALID); 92 test(lroundf, -0x8000010000000000.0p0f, IGNORE, FE_INVALID); 93 test(lround, -0x8000000000000000.0p0, -0x8000000000000000l, 0); 94 test(lroundf, -0x8000000000000000.0p0f, -0x8000000000000000l, 0); 95 #else 96 #error "Unsupported long size" 97 #endif 98 99 #if (LLONG_MAX == 0x7fffffffffffffffLL) 100 test(llround, 0x8000000000000000.0p0, IGNORE, FE_INVALID); 101 test(llroundf, 0x8000000000000000.0p0f, IGNORE, FE_INVALID); 102 test(llround, 0x7ffffffffffffc00.0p0, 0x7ffffffffffffc00ll, 0); 103 test(llroundf, 0x7fffff8000000000.0p0f, 0x7fffff8000000000ll, 0); 104 test(llround, -0x8000000000000800.0p0, IGNORE, FE_INVALID); 105 test(llroundf, -0x8000010000000000.0p0f, IGNORE, FE_INVALID); 106 test(llround, -0x8000000000000000.0p0, -0x8000000000000000ll, 0); 107 test(llroundf, -0x8000000000000000.0p0f, -0x8000000000000000ll, 0); 108 #else 109 #error "Unsupported long long size" 110 #endif 111 112 printf("ok 1 - lround\n"); 113 114 return (0); 115 } 116