From fa095a4504cbe668e4244547e2c141597bea4ecf Mon Sep 17 00:00:00 2001 From: Andreas Rottmann Date: Mon, 14 Sep 2009 12:32:44 +0200 Subject: Imported Upstream version 0.9.1 --- tests/test-isnanf.h | 80 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 80 insertions(+) create mode 100644 tests/test-isnanf.h (limited to 'tests/test-isnanf.h') diff --git a/tests/test-isnanf.h b/tests/test-isnanf.h new file mode 100644 index 0000000..f3f387c --- /dev/null +++ b/tests/test-isnanf.h @@ -0,0 +1,80 @@ +/* Test of isnanf() substitute. + Copyright (C) 2007-2008 Free Software Foundation, Inc. + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program 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 General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . */ + +/* Written by Bruno Haible , 2007. */ + +#include +#include +#include + +#include "nan.h" + +#define ASSERT(expr) \ + do \ + { \ + if (!(expr)) \ + { \ + fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \ + fflush (stderr); \ + abort (); \ + } \ + } \ + while (0) + +/* HP cc on HP-UX 10.20 has a bug with the constant expression -0.0f. + So we use -zero instead. */ +float zero = 0.0f; + +int +main () +{ + /* Finite values. */ + ASSERT (!isnanf (3.141f)); + ASSERT (!isnanf (3.141e30f)); + ASSERT (!isnanf (3.141e-30f)); + ASSERT (!isnanf (-2.718f)); + ASSERT (!isnanf (-2.718e30f)); + ASSERT (!isnanf (-2.718e-30f)); + ASSERT (!isnanf (0.0f)); + ASSERT (!isnanf (-zero)); + /* Infinite values. */ + ASSERT (!isnanf (1.0f / 0.0f)); + ASSERT (!isnanf (-1.0f / 0.0f)); + /* Quiet NaN. */ + ASSERT (isnanf (NaNf ())); +#if defined FLT_EXPBIT0_WORD && defined FLT_EXPBIT0_BIT + /* Signalling NaN. */ + { + #define NWORDS \ + ((sizeof (float) + sizeof (unsigned int) - 1) / sizeof (unsigned int)) + typedef union { float value; unsigned int word[NWORDS]; } memory_float; + memory_float m; + m.value = NaNf (); +# if FLT_EXPBIT0_BIT > 0 + m.word[FLT_EXPBIT0_WORD] ^= (unsigned int) 1 << (FLT_EXPBIT0_BIT - 1); +# else + m.word[FLT_EXPBIT0_WORD + (FLT_EXPBIT0_WORD < NWORDS / 2 ? 1 : - 1)] + ^= (unsigned int) 1 << (sizeof (unsigned int) * CHAR_BIT - 1); +# endif + if (FLT_EXPBIT0_WORD < NWORDS / 2) + m.word[FLT_EXPBIT0_WORD + 1] |= (unsigned int) 1 << FLT_EXPBIT0_BIT; + else + m.word[0] |= (unsigned int) 1; + ASSERT (isnanf (m.value)); + } +#endif + return 0; +} -- cgit v1.2.3