huwcampbell.com
Reactos
1/*
2 * PROJECT: ReactOS API tests
3 * LICENSE: MIT (https://spdx.org/licenses/MIT)
4 * PURPOSE: Tests for _isnan / _isnanf
5 * COPYRIGHT: Copyright 2025 Timo Kreuzer <timo.kreuzer@reactos.org>
6 */
7
8#if !defined(_CRTBLD) && !defined(_M_IX86)
9#define _CRTBLD // we don't want inline _isnanf!
10#endif
11#include "math_helpers.h"
12
13static TESTENTRY_DBL_INT s_isnan_tests[] =
14{
15 /* Special values */
16 { 0x0000000000000000 /* 0.000000000000000e+000 */, 0 },
17 { 0x0000000000000001 /* 0.000000000000000e+000 */, 0 },
18 { 0x000fffffffffffff /* 0.000000000000000e+000 */, 0 },
19 { 0x8000000000000000 /* -0.000000000000000e+000 */, 0 },
20 { 0x8000000000000001 /* -0.000000000000000e+000 */, 0 },
21 { 0x800fffffffffffff /* -0.000000000000000e+000 */, 0 },
22 { 0x7ff0000000000000 /* 1.#INF00000000000e+000 */, 0 },
23 { 0x7ff0000000000001 /* 1.#QNAN0000000000e+000 */, 1 },
24 { 0x7ff7ffffffffffff /* 1.#QNAN0000000000e+000 */, 1 },
25 { 0x7ff8000000000000 /* 1.#QNAN0000000000e+000 */, 1 },
26 { 0x7ff8000000000001 /* 1.#QNAN0000000000e+000 */, 1 },
27 { 0x7fffffffffffffff /* 1.#QNAN0000000000e+000 */, 1 },
28 { 0xfff0000000000000 /* -1.#INF00000000000e+000 */, 0 },
29 { 0xfff0000000000001 /* -1.#QNAN0000000000e+000 */, 1 },
30 { 0xfff7ffffffffffff /* -1.#QNAN0000000000e+000 */, 1 },
31 { 0xfff8000000000000 /* -1.#IND00000000000e+000 */, 1 },
32 { 0xfff8000000000001 /* -1.#QNAN0000000000e+000 */, 1 },
33 { 0xffffffffffffffff /* -1.#QNAN0000000000e+000 */, 1 },
34
35 /* Some random doubles */
36 { 0x386580c747a3402b /* 5.055340589883462e-037 */, 0 },
37 { 0xb74298e6627fb9ed /* -1.667860443847725e-042 */, 0 },
38 { 0x0ef25f06e414aa2d /* 1.128498317470960e-236 */, 0 },
39 { 0x24002a37167638b5 /* 2.780001692929186e-135 */, 0 },
40 { 0x44258d1be62a0d22 /* 1.987747995999515e+020 */, 0 },
41 { 0x9ed4e46a65aad464 /* -3.715074250469020e-160 */, 0 },
42 { 0xc5afcd6f4ae4bf41 /* -4.921195330852160e+027 */, 0 },
43 { 0x330fac896cbb01d2 /* 9.624395081137827e-063 */, 0 },
44 { 0xc18026ab4c845405 /* -3.387120956461338e+007 */, 0 },
45 { 0x2f42a7dc898a741a /* 4.916804395045249e-081 */, 0 },
46};
47
48
49void Test__isnan(void)
50{
51 int i;
52
53 for (i = 0; i < _countof(s_isnan_tests); i++)
54 {
55 double x = u64_to_dbl(s_isnan_tests[i].x);
56 int r = _isnan(x);
57 ok(r == s_isnan_tests[i].result, "Wrong result for %f [0x%016I64x]. Expected %d, got %d\n", x, s_isnan_tests[i].x, s_isnan_tests[i].result, r);
58 }
59}
60
61#ifndef _M_IX86
62static TESTENTRY_FLT s_isnanf_tests[] =
63{
64 /* Special values */
65 { 0x00000000 /* 0.000000 */, 0 },
66 { 0x00000001 /* 0.000000 */, 0 },
67 { 0x007FFFFF /* 0.000000 */, 0 },
68 { 0x80000000 /* -0.000000 */, 0 },
69 { 0x80000001 /* -0.000000 */, 0 },
70 { 0x807FFFFF /* -0.000000 */, 0 },
71 { 0x7f800000 /* 1.#INF00 */, 0 },
72 { 0x7f800001 /* 1.#SNAN0 */, 1 },
73 { 0x7fBFffff /* 1.#SNAN0 */, 1 },
74 { 0x7fC00000 /* 1.#QNAN0 */, 1 },
75 { 0x7fC80001 /* 1.#QNAN0 */, 1 },
76 { 0x7fFfffff /* 1.#QNAN0 */, 1 },
77 { 0xff800000 /* -1.#INF00 */, 0 },
78 { 0xff800001 /* -1.#SNAN0 */, 1 },
79 { 0xffBfffff /* -1.#SNAN0 */, 1 },
80 { 0xffC00000 /* -1.#IND00 */, 1 },
81 { 0xfff80001 /* -1.#QNAN0 */, 1 },
82 { 0xffffffff /* -1.#QNAN0 */, 1 },
83
84 /* Some random floats */
85 { 0x386580c7 /* 5.471779e-005 */, 0 },
86 { 0x47a3402b /* 8.358434e+004 */, 0 },
87 { 0xb74298e6 /* -1.159890e-005 */, 0 },
88 { 0x627fb9ed /* 1.179329e+021 */, 0 },
89 { 0x0ef25f06 /* 5.974911e-030 */, 0 },
90 { 0xe414aa2d /* -1.096952e+022 */, 0 },
91 { 0x24002a37 /* 2.779133e-017 */, 0 },
92 { 0x167638b5 /* 1.988962e-025 */, 0 },
93 { 0x44258d1b /* 6.622048e+002 */, 0 },
94 { 0xe62a0d22 /* -2.007611e+023 */, 0 },
95};
96
97void Test__isnanf(void)
98{
99 int i;
100
101 for (i = 0; i < _countof(s_isnanf_tests); i++)
102 {
103 float x = u32_to_flt(s_isnanf_tests[i].x);
104 int r = _isnanf(x);
105 ok(r == s_isnanf_tests[i].result, "Wrong result for %f [0x%08lx]. Expected %d, got %d\n", x, s_isnanf_tests[i].x, s_isnanf_tests[i].result, r);
106 }
107}
108#endif // !_MIX86
109
110START_TEST(_isnan)
111{
112 Test__isnan();
113#ifndef _M_IX86
114 Test__isnanf();
115#endif // !_MIX86
116}