1/* Copyright JS Foundation and other contributors, http://js.foundation
2 *
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16/**
17 * Unit test for jerry-libm
18 */
19
20#include <math.h>
21#include <stdbool.h>
22#include <stdint.h>
23#include <stdio.h>
24
25static bool passed = true;
26
27static void
28check_int (const char *expr, int computed, int expected)
29{
30  printf ("%s = %d [expected=%d] ", expr, computed, expected);
31
32  bool result = computed == expected;
33  printf ("%s\n", result ? "PASS" : "FAIL");
34
35  passed &= result;
36} /* check_int */
37
38typedef union
39{
40  double value;
41  uint64_t bits64;
42  uint32_t bits32[2];
43} double_bits_t;
44
45static void
46check_double (const char *expr, double computed, double expected)
47{
48  double_bits_t computed_bits;
49  double_bits_t expected_bits;
50
51  computed_bits.value = computed;
52  expected_bits.value = expected;
53
54  printf ("%s = 0x%08x%08x [expected=0x%08x%08x] ", expr,
55          (unsigned int) computed_bits.bits32[1], (unsigned int) computed_bits.bits32[0],
56          (unsigned int) expected_bits.bits32[1], (unsigned int) expected_bits.bits32[0]);
57
58  bool result;
59  if (isnan (computed) && isnan (expected))
60  {
61    result = true;
62  }
63  else
64  {
65    int64_t diff = (int64_t) (computed_bits.bits64 - expected_bits.bits64);
66    if (diff < 0)
67    {
68      diff = -diff;
69    }
70
71    if (diff <= 1) /* tolerate 1 bit of differene in the last place */
72    {
73      result = true;
74      if (diff != 0)
75      {
76        printf ("APPROX ");
77      }
78    }
79    else
80    {
81      result = false;
82    }
83  }
84  printf ("%s\n", result ? "PASS" : "FAIL");
85
86  passed &= result;
87} /* check_double */
88
89int
90main (void)
91{
92#define INF INFINITY
93#include "test-libm.inc.h"
94
95  return passed ? 0 : 1;
96} /* main */
97