| /* Copyright (C) 1999, 2007 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, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| #include <math.h> |
| #include <float.h> |
| #include <stdio.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, NANFUNC, EPSILON, HUGEVAL) \ |
| static void \ |
| NAME (void) \ |
| { \ |
| /* Variables are declared volatile to forbid some compiler \ |
| optimizations. */ \ |
| volatile FLOAT Inf_var, NaN_var, zero_var, one_var; \ |
| FLOAT x1, x2; \ |
| \ |
| zero_var = 0.0; \ |
| one_var = 1.0; \ |
| NaN_var = zero_var / zero_var; \ |
| Inf_var = one_var / zero_var; \ |
| \ |
| (void) &zero_var; \ |
| (void) &one_var; \ |
| (void) &NaN_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 (NaN)", !(isinf (NaN_var))); \ |
| \ |
| check (#FLOAT " isnan (NaN)", isnan (NaN_var)); \ |
| check (#FLOAT " isnan (-NaN)", isnan (-NaN_var)); \ |
| check (#FLOAT " !isnan (1)", !(isnan (one_var))); \ |
| check (#FLOAT " !isnan (inf)", !(isnan (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 " NaN != NaN", NaN_var != NaN_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); \ |
| \ |
| /* \ |
| And again with the value returned by the `nan' function. \ |
| */ \ |
| check (#FLOAT " isnan (NAN)", isnan (NANFUNC (""))); \ |
| check (#FLOAT " isnan (-NAN)", isnan (-NANFUNC (""))); \ |
| check (#FLOAT " !isinf (NAN)", !(isinf (NANFUNC ("")))); \ |
| check (#FLOAT " !isinf (-NAN)", !(isinf (-NANFUNC ("")))); \ |
| check (#FLOAT " NAN != NAN", NANFUNC ("") != NANFUNC ("")); \ |
| \ |
| /* 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_TRUNC(NAME, FLOAT, DOUBLE) \ |
| void \ |
| NAME (void) \ |
| { \ |
| volatile DOUBLE Inf_var, NaN_var, zero_var, one_var; \ |
| FLOAT x1, x2; \ |
| \ |
| zero_var = 0.0; \ |
| one_var = 1.0; \ |
| NaN_var = zero_var / zero_var; \ |
| Inf_var = one_var / zero_var; \ |
| \ |
| (void) &NaN_var; \ |
| (void) &Inf_var; \ |
| \ |
| x1 = (FLOAT) NaN_var; \ |
| check (" "#FLOAT" x = ("#FLOAT") ("#DOUBLE") NaN", isnan (x1) != 0); \ |
| x2 = (FLOAT) Inf_var; \ |
| check (" "#FLOAT" x = ("#FLOAT") ("#DOUBLE") Inf", isinf (x2) != 0); \ |
| } |
| |
| TEST_FUNC (float_test, float, nanf, FLT_EPSILON, HUGE_VALF) |
| TEST_FUNC (double_test, double, nan, DBL_EPSILON, HUGE_VAL) |
| TEST_TRUNC (truncdfsf_test, float, double) |
| #ifndef NO_LONG_DOUBLE |
| TEST_FUNC (ldouble_test, long double, nanl, LDBL_EPSILON, HUGE_VALL) |
| TEST_TRUNC (trunctfsf_test, float, long double) |
| TEST_TRUNC (trunctfdf_test, double, long double) |
| #endif |
| |
| int |
| do_test (void) |
| { |
| float_test (); |
| double_test (); |
| truncdfsf_test(); |
| |
| #ifndef NO_LONG_DOUBLE |
| ldouble_test (); |
| trunctfsf_test(); |
| trunctfdf_test(); |
| #endif |
| |
| return errors != 0; |
| } |
| |
| #define TEST_FUNCTION do_test () |
| #include "../test-skeleton.c" |