lib/msun/tests/lround_test.c

   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 <fenv.h>
  35 #include <limits.h>
  36 #include <math.h>
  37 #include <stdio.h>
  38
  39 #include "test-utils.h"
  40
  41 #define IGNORE  0x12345
  42
  43 #define test(func, x, result, excepts)  do {                                    \
  44         ATF_REQUIRE_EQ(0, feclearexcept(FE_ALL_EXCEPT));                        \
  45         long long _r = (func)(x);                                               \
  46         CHECK_FP_EXCEPTIONS_MSG(excepts, FE_ALL_EXCEPT, "for %s(%s)",           \
  47             #func, #x);                                                         \
  48         if ((excepts & FE_INVALID) != 0) {                                      \
  49                 ATF_REQUIRE_EQ(result, IGNORE);                                 \
  50                 ATF_CHECK_EQ_MSG(FE_INVALID, fetestexcept(FE_INVALID),          \
  51                     "FE_INVALID not set correctly for %s(%s)", #func, #x);      \
  52         } else {                                                                \
  53                 ATF_REQUIRE_MSG(result != IGNORE, "Expected can't be IGNORE!"); \
  54                 ATF_REQUIRE_EQ(result, (__STRING(func(_d)), _r));               \
  55         }                                                                       \
  56 } while (0)
  57
  58 #define testall(x, result, excepts)     do {                            \
  59         test(lround, x, result, excepts);                               \
  60         test(lroundf, x, result, excepts);                              \
  61         test(llround, x, result, excepts);                              \
  62         test(llroundf, x, result, excepts);                             \
  63 } while (0)
  64
  65 #pragma STDC FENV_ACCESS ON
  66
  67 ATF_TC_WITHOUT_HEAD(main);
  68 ATF_TC_BODY(main, tc)
  69 {
  70         testall(0.0, 0, 0);
  71         testall(0.25, 0, FE_INEXACT);
  72         testall(0.5, 1, FE_INEXACT);
  73         testall(-0.5, -1, FE_INEXACT);
  74         testall(1.0, 1, 0);
  75         testall(0x12345000p0, 0x12345000, 0);
  76         testall(0x1234.fp0, 0x1235, FE_INEXACT);
  77         testall(INFINITY, IGNORE, FE_INVALID);
  78         testall(NAN, IGNORE, FE_INVALID);
  79
  80 #if (LONG_MAX == 0x7fffffffl)
  81         test(lround, 0x7fffffff.8p0, IGNORE, FE_INVALID);
  82         test(lround, -0x80000000.8p0, IGNORE, FE_INVALID);
  83         test(lround, 0x80000000.0p0, IGNORE, FE_INVALID);
  84         test(lround, 0x7fffffff.4p0, 0x7fffffffl, FE_INEXACT);
  85         test(lround, -0x80000000.4p0, -0x80000000l, FE_INEXACT);
  86         test(lroundf, 0x80000000.0p0f, IGNORE, FE_INVALID);
  87         test(lroundf, 0x7fffff80.0p0f, 0x7fffff80l, 0);
  88 #elif (LONG_MAX == 0x7fffffffffffffffll)
  89         test(lround, 0x8000000000000000.0p0, IGNORE, FE_INVALID);
  90         test(lroundf, 0x8000000000000000.0p0f, IGNORE, FE_INVALID);
  91         test(lround, 0x7ffffffffffffc00.0p0, 0x7ffffffffffffc00l, 0);
  92         test(lroundf, 0x7fffff8000000000.0p0f, 0x7fffff8000000000l, 0);
  93         test(lround, -0x8000000000000800.0p0, IGNORE, FE_INVALID);
  94         test(lroundf, -0x8000010000000000.0p0f, IGNORE, FE_INVALID);
  95         test(lround, -0x8000000000000000.0p0, (long)-0x8000000000000000l, 0);
  96         test(lroundf, -0x8000000000000000.0p0f, (long)-0x8000000000000000l, 0);
  97 #else
  98 #error "Unsupported long size"
  99 #endif
 100
 101 #if (LLONG_MAX == 0x7fffffffffffffffLL)
 102         test(llround, 0x8000000000000000.0p0, IGNORE, FE_INVALID);
 103         test(llroundf, 0x8000000000000000.0p0f, IGNORE, FE_INVALID);
 104         test(llround, 0x7ffffffffffffc00.0p0, 0x7ffffffffffffc00ll, 0);
 105         test(llroundf, 0x7fffff8000000000.0p0f, 0x7fffff8000000000ll, 0);
 106         test(llround, -0x8000000000000800.0p0, IGNORE, FE_INVALID);
 107         test(llroundf, -0x8000010000000000.0p0f, IGNORE, FE_INVALID);
 108         test(llround, -0x8000000000000000.0p0, (long long)-0x8000000000000000ll, 0);
 109         test(llroundf, -0x8000000000000000.0p0f, (long long)-0x8000000000000000ll, 0);
 110 #else
 111 #error "Unsupported long long size"
 112 #endif
 113 }
 114
 115 ATF_TP_ADD_TCS(tp)
 116 {
 117         ATF_TP_ADD_TC(tp, main);
 118
 119         return (atf_no_error());
 120 }