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691 |
jeremybenn |
/* { dg-do run { target powerpc*-*-darwin* } } */
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/* { dg-options "" } */
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/* No options so 'long long' can be used. */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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typedef unsigned long long uint64_t;
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typedef uint64_t ldbits[2];
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union ldu
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{
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ldbits lb;
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long double ld;
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};
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static const struct {
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ldbits a;
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ldbits b;
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ldbits result;
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} single_tests[] = {
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/* Test of values that add to near +Inf. */
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{ { 0x7FEFFFFFFFFFFFFFLL, 0xFC88000000000000LL },
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{ 0x7C94000000000000LL, 0x0000000000000000LL },
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{ 0x7FEFFFFFFFFFFFFFLL, 0x7C80000000000000LL } },
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{ { 0x7FEFFFFFFFFFFFFFLL, 0x7C8FFFFFFFFFFFFFLL },
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{ 0x792FFFFFFFFFFFFFLL, 0x0000000000000000LL },
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{ 0x7FEFFFFFFFFFFFFFLL, 0x7C8FFFFFFFFFFFFFLL } },
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{ { 0x7FEFFFFFFFFFFFFFLL, 0x7C8FFFFFFFFFFFFFLL },
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{ 0x7930000000000000LL, 0xF5DFFFFFFFFFFFFFLL },
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/* correct result is: { 0x7FEFFFFFFFFFFFFFLL, 0x7C8FFFFFFFFFFFFFLL } */
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{ 0x7FF0000000000000LL, 0x0000000000000000LL } },
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/* Test of values that add to +Inf. */
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{ { 0x7FEFFFFFFFFFFFFFLL, 0x7C8FFFFFFFFFFFFFLL },
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{ 0x7930000000000000LL, 0x0000000000000000LL },
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{ 0x7FF0000000000000LL, 0x0000000000000000LL } },
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/* Tests of Inf addition. */
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{ { 0x7FF0000000000000LL, 0x0000000000000000LL },
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{ 0x0000000000000000LL, 0x0000000000000000LL },
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{ 0x7FF0000000000000LL, 0x0000000000000000LL } },
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{ { 0x7FF0000000000000LL, 0x0000000000000000LL },
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{ 0x7FF0000000000000LL, 0x0000000000000000LL },
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{ 0x7FF0000000000000LL, 0x0000000000000000LL } },
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/* Test of Inf addition producing NaN. */
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{ { 0x7FF0000000000000LL, 0x0000000000000000LL },
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{ 0xFFF0000000000000LL, 0x0000000000000000LL },
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{ 0x7FF8000000000000LL, 0x0000000000000000LL } },
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/* Tests of NaN addition. */
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{ { 0x7FF8000000000000LL, 0x0000000000000000LL },
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{ 0x0000000000000000LL, 0x0000000000000000LL },
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{ 0x7FF8000000000000LL, 0x7FF8000000000000LL } },
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{ { 0x7FF8000000000000LL, 0x0000000000000000LL },
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{ 0x7FF0000000000000LL, 0x0000000000000000LL },
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{ 0x7FF8000000000000LL, 0x7FF8000000000000LL } },
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/* Addition of positive integers, with interesting rounding properties. */
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{ { 0x4690000000000000LL, 0x4330000000000000LL },
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{ 0x4650000000000009LL, 0xC2FFFFFFFFFFFFF2LL },
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/* correct result is: { 0x4691000000000001LL, 0xC32C000000000000LL } */
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{ 0x4691000000000001LL, 0xc32bfffffffffffeLL } },
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{ { 0x4690000000000000LL, 0x4330000000000000LL },
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{ 0x4650000000000008LL, 0x42F0000000000010LL },
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{ 0x4691000000000001LL, 0xC32E000000000000LL } },
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{ { 0x469FFFFFFFFFFFFFLL, 0x433FFFFFFFFFFFFFLL },
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{ 0x4340000000000000LL, 0x3FF0000000000000LL },
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{ 0x46A0000000000000LL, 0x0000000000000000LL } },
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{ { 0x469FFFFFFFFFFFFFLL, 0x433FFFFFFFFFFFFFLL },
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{ 0x4340000000000000LL, 0x0000000000000000LL },
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{ 0x46A0000000000000LL, 0xBFF0000000000000LL } },
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/* Subtraction of integers, with cancellation. */
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{ { 0x4690000000000000LL, 0x4330000000000000LL },
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{ 0xC690000000000000LL, 0xC330000000000000LL },
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{ 0x0000000000000000LL, 0x0000000000000000LL } },
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{ { 0x4690000000000000LL, 0x4330000000000000LL },
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{ 0xC330000000000000LL, 0x0000000000000000LL },
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{ 0x4690000000000000LL, 0x0000000000000000LL } },
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{ { 0x4690000000000000LL, 0x4330000000000000LL },
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{ 0xC330000000000000LL, 0x3FA0000000000000LL },
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{ 0x4690000000000000LL, 0x3FA0000000000000LL } },
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{ { 0x4690000000000000LL, 0x4330000000000000LL },
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{ 0xC690000000000000LL, 0x3FA0000000000000LL },
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/* correct result is: { 0x4330000000000000LL, 0x3FA0000000000000LL } */
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{ 0x4330000000000000LL, 0x0000000000000000LL } }
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};
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static int fail = 0;
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static void
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run_single_tests (void)
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{
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size_t i;
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for (i = 0; i < sizeof (single_tests) / sizeof (single_tests[0]); i++)
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{
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union ldu a, b, result, expected;
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memcpy (a.lb, single_tests[i].a, sizeof (ldbits));
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memcpy (b.lb, single_tests[i].b, sizeof (ldbits));
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memcpy (expected.lb, single_tests[i].result, sizeof (ldbits));
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result.ld = a.ld + b.ld;
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if (memcmp (result.lb, expected.lb,
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result.ld == result.ld ? sizeof (ldbits) : sizeof (double))
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!= 0)
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{
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printf ("FAIL: %016llx %016llx + %016llx %016llx\n",
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a.lb[0], a.lb[1], b.lb[0], b.lb[1]);
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printf (" = %016llx %016llx not %016llx %016llx\n",
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result.lb[0], result.lb[1], expected.lb[0], expected.lb[1]);
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fail = 1;
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}
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}
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}
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int main(void)
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{
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run_single_tests();
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if (fail)
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abort ();
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else
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exit (0);
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}
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