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[CRT_APITEST] Add tests for _isnan(f)
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‎modules/rostests/apitests/crt/_isnan.c‎

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/*
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* PROJECT: ReactOS API tests
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* LICENSE: MIT (https://spdx.org/licenses/MIT)
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* PURPOSE: Tests for _isnan / _isnanf
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* COPYRIGHT: Copyright 2025 Timo Kreuzer <[email protected]>
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*/
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#if !defined(_CRTBLD) && !defined(_M_IX86)
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#define _CRTBLD // we don't want inline _isnanf!
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#endif
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#include "math_helpers.h"
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static TESTENTRY_DBL_INT s_isnan_tests[] =
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{
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/* Special values */
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{ 0x0000000000000000 /* 0.000000000000000e+000 */, 0 },
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{ 0x0000000000000001 /* 0.000000000000000e+000 */, 0 },
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{ 0x000fffffffffffff /* 0.000000000000000e+000 */, 0 },
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{ 0x8000000000000000 /* -0.000000000000000e+000 */, 0 },
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{ 0x8000000000000001 /* -0.000000000000000e+000 */, 0 },
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{ 0x800fffffffffffff /* -0.000000000000000e+000 */, 0 },
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{ 0x7ff0000000000000 /* 1.#INF00000000000e+000 */, 0 },
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{ 0x7ff0000000000001 /* 1.#QNAN0000000000e+000 */, 1 },
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{ 0x7ff7ffffffffffff /* 1.#QNAN0000000000e+000 */, 1 },
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{ 0x7ff8000000000000 /* 1.#QNAN0000000000e+000 */, 1 },
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{ 0x7ff8000000000001 /* 1.#QNAN0000000000e+000 */, 1 },
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{ 0x7fffffffffffffff /* 1.#QNAN0000000000e+000 */, 1 },
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{ 0xfff0000000000000 /* -1.#INF00000000000e+000 */, 0 },
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{ 0xfff0000000000001 /* -1.#QNAN0000000000e+000 */, 1 },
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{ 0xfff7ffffffffffff /* -1.#QNAN0000000000e+000 */, 1 },
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{ 0xfff8000000000000 /* -1.#IND00000000000e+000 */, 1 },
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{ 0xfff8000000000001 /* -1.#QNAN0000000000e+000 */, 1 },
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{ 0xffffffffffffffff /* -1.#QNAN0000000000e+000 */, 1 },
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/* Some random doubles */
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{ 0x386580c747a3402b /* 5.055340589883462e-037 */, 0 },
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{ 0xb74298e6627fb9ed /* -1.667860443847725e-042 */, 0 },
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{ 0x0ef25f06e414aa2d /* 1.128498317470960e-236 */, 0 },
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{ 0x24002a37167638b5 /* 2.780001692929186e-135 */, 0 },
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{ 0x44258d1be62a0d22 /* 1.987747995999515e+020 */, 0 },
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{ 0x9ed4e46a65aad464 /* -3.715074250469020e-160 */, 0 },
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{ 0xc5afcd6f4ae4bf41 /* -4.921195330852160e+027 */, 0 },
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{ 0x330fac896cbb01d2 /* 9.624395081137827e-063 */, 0 },
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{ 0xc18026ab4c845405 /* -3.387120956461338e+007 */, 0 },
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{ 0x2f42a7dc898a741a /* 4.916804395045249e-081 */, 0 },
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};
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void Test__isnan(void)
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{
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int i;
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for (i = 0; i < _countof(s_isnan_tests); i++)
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{
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double x = u64_to_dbl(s_isnan_tests[i].x);
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int r = _isnan(x);
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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);
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}
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}
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#ifndef _M_IX86
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static TESTENTRY_FLT s_isnanf_tests[] =
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{
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/* Special values */
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{ 0x00000000 /* 0.000000 */, 0 },
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{ 0x00000001 /* 0.000000 */, 0 },
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{ 0x007FFFFF /* 0.000000 */, 0 },
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{ 0x80000000 /* -0.000000 */, 0 },
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{ 0x80000001 /* -0.000000 */, 0 },
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{ 0x807FFFFF /* -0.000000 */, 0 },
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{ 0x7f800000 /* 1.#INF00 */, 0 },
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{ 0x7f800001 /* 1.#SNAN0 */, 1 },
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{ 0x7fBFffff /* 1.#SNAN0 */, 1 },
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{ 0x7fC00000 /* 1.#QNAN0 */, 1 },
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{ 0x7fC80001 /* 1.#QNAN0 */, 1 },
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{ 0x7fFfffff /* 1.#QNAN0 */, 1 },
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{ 0xff800000 /* -1.#INF00 */, 0 },
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{ 0xff800001 /* -1.#SNAN0 */, 1 },
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{ 0xffBfffff /* -1.#SNAN0 */, 1 },
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{ 0xffC00000 /* -1.#IND00 */, 1 },
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{ 0xfff80001 /* -1.#QNAN0 */, 1 },
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{ 0xffffffff /* -1.#QNAN0 */, 1 },
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/* Some random floats */
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{ 0x386580c7 /* 5.471779e-005 */, 0 },
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{ 0x47a3402b /* 8.358434e+004 */, 0 },
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{ 0xb74298e6 /* -1.159890e-005 */, 0 },
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{ 0x627fb9ed /* 1.179329e+021 */, 0 },
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{ 0x0ef25f06 /* 5.974911e-030 */, 0 },
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{ 0xe414aa2d /* -1.096952e+022 */, 0 },
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{ 0x24002a37 /* 2.779133e-017 */, 0 },
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{ 0x167638b5 /* 1.988962e-025 */, 0 },
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{ 0x44258d1b /* 6.622048e+002 */, 0 },
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{ 0xe62a0d22 /* -2.007611e+023 */, 0 },
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};
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void Test__isnanf(void)
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{
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int i;
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for (i = 0; i < _countof(s_isnanf_tests); i++)
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{
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float x = u32_to_flt(s_isnanf_tests[i].x);
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int r = _isnanf(x);
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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);
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}
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}
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#endif // !_MIX86
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START_TEST(_isnan)
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{
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Test__isnan();
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#ifndef _M_IX86
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Test__isnanf();
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#endif // !_MIX86
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}

‎modules/rostests/apitests/msvcrt/CMakeLists.txt‎

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list(APPEND SOURCE_CRT_TESTS
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../crt/fpcontrol.c
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../crt/_finite.c
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../crt/_isnan.c
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../crt/_mbsncmp.c
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../crt/_mbsstr.c
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../crt/_snprintf.c

‎modules/rostests/apitests/msvcrt/testlist.c‎

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#include <apitest.h>
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extern void func__finite(void);
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extern void func__isnan(void);
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extern void func__mbsncmp(void);
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extern void func__mbsstr(void);
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extern void func__snprintf(void);
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const struct test winetest_testlist[] =
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{
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{ "_finite", func__finite },
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{ "_isnan", func__isnan },
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{ "_mbsncmp", func__mbsncmp },
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{ "_mbsstr", func__mbsstr },
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{ "_snprintf", func__snprintf },

‎modules/rostests/apitests/ucrtbase/CMakeLists.txt‎

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list(APPEND SOURCE
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../crt/_finite.c
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../crt/_isnan.c
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../crt/acos.c
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../crt/asin.c
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../crt/atan.c

‎modules/rostests/apitests/ucrtbase/testlist.c‎

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#include <wine/test.h>
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extern void func__finite(void);
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extern void func__isnan(void);
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extern void func_acos(void);
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extern void func_asin(void);
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extern void func_atan(void);
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const struct test winetest_testlist[] =
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{
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{ "_finite", func__finite },
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{ "_isnan", func__isnan },
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{ "acos", func_acos },
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{ "asin", func_asin },
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{ "atan", func_atan },

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