| /* Copyright (C) 1999-2016 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Andreas Jaeger <aj@suse.de>, 1999. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <math.h> |
| #include <float.h> |
| #include <stdio.h> |
| |
| #include <math-tests.h> |
| |
| |
| static int errors = 0; |
| |
| |
| static void |
| check (const char *testname, int result) |
| { |
| if (!result) { |
| printf ("Failure: %s\n", testname); |
| errors++; |
| } |
| } |
| |
| #define TEST_FUNC(NAME, FLOAT, SUFFIX, EPSILON, HUGEVAL) \ |
| static void \ |
| NAME (void) \ |
| { \ |
| /* Variables are declared volatile to forbid some compiler \ |
| optimizations. */ \ |
| volatile FLOAT Inf_var, qNaN_var, zero_var, one_var; \ |
| /* A sNaN is only guaranteed to be representable in variables with */ \ |
| /* static (or thread-local) storage duration. */ \ |
| static volatile FLOAT sNaN_var = __builtin_nans ## SUFFIX (""); \ |
| static volatile FLOAT minus_sNaN_var = -__builtin_nans ## SUFFIX (""); \ |
| FLOAT x1, x2; \ |
| \ |
| zero_var = 0.0; \ |
| one_var = 1.0; \ |
| qNaN_var = __builtin_nan ## SUFFIX (""); \ |
| Inf_var = one_var / zero_var; \ |
| \ |
| (void) &zero_var; \ |
| (void) &one_var; \ |
| (void) &qNaN_var; \ |
| (void) &sNaN_var; \ |
| (void) &minus_sNaN_var; \ |
| (void) &Inf_var; \ |
| \ |
| \ |
| check (#FLOAT " isinf (inf) == 1", isinf (Inf_var) == 1); \ |
| check (#FLOAT " isinf (-inf) == -1", isinf (-Inf_var) == -1); \ |
| check (#FLOAT " !isinf (1)", !(isinf (one_var))); \ |
| check (#FLOAT " !isinf (qNaN)", !(isinf (qNaN_var))); \ |
| if (SNAN_TESTS (FLOAT)) \ |
| check (#FLOAT " !isinf (sNaN)", !(isinf (sNaN_var))); \ |
| \ |
| check (#FLOAT " isnan (qNaN)", isnan (qNaN_var)); \ |
| if (SNAN_TESTS (FLOAT)) \ |
| check (#FLOAT " isnan (sNaN)", isnan (sNaN_var)); \ |
| check (#FLOAT " isnan (-qNaN)", isnan (-qNaN_var)); \ |
| if (SNAN_TESTS (FLOAT)) \ |
| check (#FLOAT " isnan (-sNaN)", isnan (minus_sNaN_var)); \ |
| check (#FLOAT " !isnan (1)", !(isnan (one_var))); \ |
| check (#FLOAT " !isnan (inf)", !(isnan (Inf_var))); \ |
| \ |
| check (#FLOAT " !issignaling (qNaN)", !(issignaling (qNaN_var))); \ |
| if (SNAN_TESTS (FLOAT)) \ |
| check (#FLOAT " issignaling (sNaN)", issignaling (sNaN_var)); \ |
| check (#FLOAT " !issignaling (-qNaN)", !(issignaling (-qNaN_var))); \ |
| if (SNAN_TESTS (FLOAT)) \ |
| check (#FLOAT " issignaling (-sNaN)", issignaling (minus_sNaN_var)); \ |
| check (#FLOAT " !issignaling (1)", !(issignaling (one_var))); \ |
| check (#FLOAT " !issignaling (inf)", !(issignaling (Inf_var))); \ |
| \ |
| check (#FLOAT " inf == inf", Inf_var == Inf_var); \ |
| check (#FLOAT " -inf == -inf", -Inf_var == -Inf_var); \ |
| check (#FLOAT " inf != -inf", Inf_var != -Inf_var); \ |
| check (#FLOAT " qNaN != qNaN", qNaN_var != qNaN_var); \ |
| if (SNAN_TESTS (FLOAT)) \ |
| check (#FLOAT " sNaN != sNaN", sNaN_var != sNaN_var); \ |
| if (SNAN_TESTS (FLOAT)) \ |
| check (#FLOAT " qNaN != sNaN", qNaN_var != sNaN_var); \ |
| if (SNAN_TESTS (FLOAT)) \ |
| check (#FLOAT " -sNaN != -sNaN", minus_sNaN_var != minus_sNaN_var); \ |
| if (SNAN_TESTS (FLOAT)) \ |
| check (#FLOAT " sNaN != -sNaN", sNaN_var != minus_sNaN_var); \ |
| if (SNAN_TESTS (FLOAT)) \ |
| check (#FLOAT " qNaN != -sNaN", qNaN_var != minus_sNaN_var); \ |
| \ |
| /* \ |
| the same tests but this time with NAN from <bits/nan.h> \ |
| NAN is a double const \ |
| */ \ |
| check (#FLOAT " isnan (NAN)", isnan (NAN)); \ |
| check (#FLOAT " isnan (-NAN)", isnan (-NAN)); \ |
| check (#FLOAT " !isinf (NAN)", !(isinf (NAN))); \ |
| check (#FLOAT " !isinf (-NAN)", !(isinf (-NAN))); \ |
| check (#FLOAT " NAN != NAN", NAN != NAN); \ |
| check (#FLOAT " NAN != qNaN", NAN != qNaN_var); \ |
| if (SNAN_TESTS (FLOAT)) \ |
| check (#FLOAT " NAN != sNaN", NAN != sNaN_var); \ |
| if (SNAN_TESTS (FLOAT)) \ |
| check (#FLOAT " NAN != -sNaN", NAN != minus_sNaN_var); \ |
| \ |
| /* \ |
| And again with the value returned by the `nan' function. \ |
| */ \ |
| check (#FLOAT " isnan (nan (\"\"))", isnan (nan ## SUFFIX (""))); \ |
| check (#FLOAT " isnan (-nan (\"\"))", isnan (-nan ## SUFFIX (""))); \ |
| check (#FLOAT " !isinf (nan (\"\"))", !(isinf (nan ## SUFFIX ("")))); \ |
| check (#FLOAT " !isinf (-nan (\"\"))", !(isinf (-nan ## SUFFIX ("")))); \ |
| check (#FLOAT " nan (\"\") != nan (\"\")", \ |
| nan ## SUFFIX ("") != nan ## SUFFIX ("")); \ |
| check (#FLOAT " nan (\"\") != qNaN", nan ## SUFFIX ("") != qNaN_var); \ |
| if (SNAN_TESTS (FLOAT)) \ |
| check (#FLOAT " nan (\"\") != sNaN", nan ## SUFFIX ("") != sNaN_var); \ |
| if (SNAN_TESTS (FLOAT)) \ |
| check (#FLOAT " nan (\"\") != -sNaN", \ |
| nan ## SUFFIX ("") != minus_sNaN_var); \ |
| \ |
| /* test if EPSILON is ok */ \ |
| x1 = 1.0; \ |
| x2 = x1 + EPSILON; \ |
| check (#FLOAT " 1 != 1+EPSILON", x1 != x2); \ |
| \ |
| x1 = 1.0; \ |
| x2 = x1 - EPSILON; \ |
| check (#FLOAT " 1 != 1-EPSILON", x1 != x2); \ |
| \ |
| /* test if HUGE_VALx is ok */ \ |
| x1 = HUGEVAL; \ |
| check (#FLOAT " isinf (HUGE_VALx) == +1", isinf (x1) == +1); \ |
| x1 = - HUGEVAL; \ |
| check (#FLOAT " isinf (-HUGE_VALx) == -1", isinf (x1) == -1); \ |
| } |
| |
| #define TEST_CONVERT(NAME, FLOAT, DOUBLE, SUFFIX) \ |
| void \ |
| NAME (void) \ |
| { \ |
| volatile DOUBLE Inf_var, qNaN_var, zero_var, one_var; \ |
| /* A sNaN is only guaranteed to be representable in variables with */ \ |
| /* static (or thread-local) storage duration. */ \ |
| static volatile DOUBLE sNaN_var = __builtin_nans ## SUFFIX (""); \ |
| FLOAT x1, x2; \ |
| \ |
| zero_var = 0.0; \ |
| one_var = 1.0; \ |
| qNaN_var = __builtin_nan ## SUFFIX (""); \ |
| Inf_var = one_var / zero_var; \ |
| \ |
| (void) &qNaN_var; \ |
| (void) &sNaN_var; \ |
| (void) &Inf_var; \ |
| \ |
| x1 = (FLOAT) qNaN_var; \ |
| check (" "#FLOAT" x = ("#FLOAT") ("#DOUBLE") qNaN, isnan", isnan (x1)); \ |
| check (" "#FLOAT" x = ("#FLOAT") ("#DOUBLE") qNaN, !issignaling", \ |
| !issignaling (x1)); \ |
| if (SNAN_TESTS (FLOAT)) \ |
| { \ |
| x1 = (FLOAT) sNaN_var; \ |
| check (" "#FLOAT" x = ("#FLOAT") ("#DOUBLE") sNaN, isnan", isnan (x1)); \ |
| if (SNAN_TESTS_TYPE_CAST) \ |
| { \ |
| /* Upon type conversion, a sNaN is converted into a qNaN plus an */ \ |
| /* INVALID exception (not checked here). */ \ |
| check (" "#FLOAT" x = ("#FLOAT") ("#DOUBLE") sNaN, !issignaling", \ |
| !issignaling (x1)); \ |
| } \ |
| } \ |
| x2 = (FLOAT) Inf_var; \ |
| check (" "#FLOAT" x = ("#FLOAT") ("#DOUBLE") Inf", isinf (x2) != 0); \ |
| } |
| |
| TEST_FUNC (float_test, float, f, FLT_EPSILON, HUGE_VALF) |
| TEST_FUNC (double_test, double, , DBL_EPSILON, HUGE_VAL) |
| TEST_CONVERT (convert_dfsf_test, float, double, ) |
| TEST_CONVERT (convert_sfdf_test, double, float, f) |
| #ifndef NO_LONG_DOUBLE |
| TEST_FUNC (ldouble_test, long double, l, LDBL_EPSILON, HUGE_VALL) |
| TEST_CONVERT (convert_tfsf_test, float, long double, l) |
| TEST_CONVERT (convert_sftf_test, long double, float, f) |
| TEST_CONVERT (convert_tfdf_test, double, long double, l) |
| TEST_CONVERT (convert_dftf_test, long double, double, ) |
| #endif |
| |
| int |
| do_test (void) |
| { |
| float_test (); |
| double_test (); |
| convert_dfsf_test(); |
| convert_sfdf_test(); |
| |
| #ifndef NO_LONG_DOUBLE |
| ldouble_test (); |
| convert_tfsf_test(); |
| convert_sftf_test(); |
| convert_tfdf_test(); |
| convert_dftf_test(); |
| #endif |
| |
| return errors != 0; |
| } |
| |
| #define TEST_FUNCTION do_test () |
| #include "../test-skeleton.c" |