gcc/testsuite/gcc.dg/darwin-longdouble.c

   1 /* { dg-do run { target powerpc*-*-darwin* } } */
   2 /* { dg-options "" } */
   3 /* No options so 'long long' can be used.  */
   4
   5 #include <stdio.h>
   6 #include <stdlib.h>
   7 #include <string.h>
   8
   9 typedef unsigned long long uint64_t;
  10 typedef uint64_t ldbits[2];
  11
  12 union ldu
  13 {
  14   ldbits lb;
  15   long double ld;
  16 };
  17
  18 static const struct {
  19   ldbits a;
  20   ldbits b;
  21   ldbits result;
  22 } single_tests[] = {
  23   /* Test of values that add to near +Inf.  */
  24   { { 0x7FEFFFFFFFFFFFFFLL, 0xFC88000000000000LL },
  25     { 0x7C94000000000000LL, 0x0000000000000000LL },
  26     { 0x7FEFFFFFFFFFFFFFLL, 0x7C80000000000000LL } },
  27   { { 0x7FEFFFFFFFFFFFFFLL, 0x7C8FFFFFFFFFFFFFLL },
  28     { 0x792FFFFFFFFFFFFFLL, 0x0000000000000000LL },
  29     { 0x7FEFFFFFFFFFFFFFLL, 0x7C8FFFFFFFFFFFFFLL } },
  30   { { 0x7FEFFFFFFFFFFFFFLL, 0x7C8FFFFFFFFFFFFFLL },
  31     { 0x7930000000000000LL, 0xF5DFFFFFFFFFFFFFLL },
  32     /* correct result is: { 0x7FEFFFFFFFFFFFFFLL, 0x7C8FFFFFFFFFFFFFLL } */
  33     { 0x7FF0000000000000LL, 0x0000000000000000LL } },
  34   /* Test of values that add to +Inf.  */
  35   { { 0x7FEFFFFFFFFFFFFFLL, 0x7C8FFFFFFFFFFFFFLL },
  36     { 0x7930000000000000LL, 0x0000000000000000LL },
  37     { 0x7FF0000000000000LL, 0x0000000000000000LL } },
  38   /* Tests of Inf addition.  */
  39   { { 0x7FF0000000000000LL, 0x0000000000000000LL },
  40     { 0x0000000000000000LL, 0x0000000000000000LL },
  41     { 0x7FF0000000000000LL, 0x0000000000000000LL } },
  42   { { 0x7FF0000000000000LL, 0x0000000000000000LL },
  43     { 0x7FF0000000000000LL, 0x0000000000000000LL },
  44     { 0x7FF0000000000000LL, 0x0000000000000000LL } },
  45   /* Test of Inf addition producing NaN.  */
  46   { { 0x7FF0000000000000LL, 0x0000000000000000LL },
  47     { 0xFFF0000000000000LL, 0x0000000000000000LL },
  48     { 0x7FF8000000000000LL, 0x0000000000000000LL } },
  49   /* Tests of NaN addition.  */
  50   { { 0x7FF8000000000000LL, 0x0000000000000000LL },
  51     { 0x0000000000000000LL, 0x0000000000000000LL },
  52     { 0x7FF8000000000000LL, 0x7FF8000000000000LL } },
  53   { { 0x7FF8000000000000LL, 0x0000000000000000LL },
  54     { 0x7FF0000000000000LL, 0x0000000000000000LL },
  55     { 0x7FF8000000000000LL, 0x7FF8000000000000LL } },
  56   /* Addition of positive integers, with interesting rounding properties.  */
  57   { { 0x4690000000000000LL, 0x4330000000000000LL },
  58     { 0x4650000000000009LL, 0xC2FFFFFFFFFFFFF2LL },
  59     /* correct result is: { 0x4691000000000001LL, 0xC32C000000000000LL } */
  60     { 0x4691000000000001LL, 0xc32bfffffffffffeLL } },
  61   { { 0x4690000000000000LL, 0x4330000000000000LL },
  62     { 0x4650000000000008LL, 0x42F0000000000010LL },
  63     { 0x4691000000000001LL, 0xC32E000000000000LL } },
  64   { { 0x469FFFFFFFFFFFFFLL, 0x433FFFFFFFFFFFFFLL },
  65     { 0x4340000000000000LL, 0x3FF0000000000000LL },
  66     { 0x46A0000000000000LL, 0x0000000000000000LL } },
  67   { { 0x469FFFFFFFFFFFFFLL, 0x433FFFFFFFFFFFFFLL },
  68     { 0x4340000000000000LL, 0x0000000000000000LL },
  69     { 0x46A0000000000000LL, 0xBFF0000000000000LL } },
  70   /* Subtraction of integers, with cancellation.  */
  71   { { 0x4690000000000000LL, 0x4330000000000000LL },
  72     { 0xC690000000000000LL, 0xC330000000000000LL },
  73     { 0x0000000000000000LL, 0x0000000000000000LL } },
  74   { { 0x4690000000000000LL, 0x4330000000000000LL },
  75     { 0xC330000000000000LL, 0x0000000000000000LL },
  76     { 0x4690000000000000LL, 0x0000000000000000LL } },
  77   { { 0x4690000000000000LL, 0x4330000000000000LL },
  78     { 0xC330000000000000LL, 0x3FA0000000000000LL },
  79     { 0x4690000000000000LL, 0x3FA0000000000000LL } },
  80   { { 0x4690000000000000LL, 0x4330000000000000LL },
  81     { 0xC690000000000000LL, 0x3FA0000000000000LL },
  82     /* correct result is: { 0x4330000000000000LL, 0x3FA0000000000000LL } */
  83     { 0x4330000000000000LL, 0x0000000000000000LL } }
  84 };
  85
  86 static int fail = 0;
  87
  88 static void
  89 run_single_tests (void)
  90 {
  91   size_t i;
  92   for (i = 0; i < sizeof (single_tests) / sizeof (single_tests[0]); i++)
  93     {
  94       union ldu a, b, result, expected;
  95       memcpy (a.lb, single_tests[i].a, sizeof (ldbits));
  96       memcpy (b.lb, single_tests[i].b, sizeof (ldbits));
  97       memcpy (expected.lb, single_tests[i].result, sizeof (ldbits));
  98       result.ld = a.ld + b.ld;
  99       if (memcmp (result.lb, expected.lb,
 100                   result.ld == result.ld ? sizeof (ldbits) : sizeof (double))
 101           != 0)
 102         {
 103           printf ("FAIL: %016llx %016llx + %016llx %016llx\n",
 104                   a.lb[0], a.lb[1], b.lb[0], b.lb[1]);
 105           printf (" = %016llx %016llx not %016llx %016llx\n",
 106                   result.lb[0], result.lb[1], expected.lb[0], expected.lb[1]);
 107           fail = 1;
 108         }
 109     }
 110 }
 111
 112 int main(void)
 113 {
 114   run_single_tests();
 115   if (fail)
 116     abort ();
 117   else
 118     exit (0);
 119 }