tools/regression/lib/msun/test-lrint.c

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