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author | Dan Willemsen <dwillemsen@google.com> | 2019-02-18 13:40:03 -0800 |
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committer | Dan Willemsen <dwillemsen@google.com> | 2019-02-18 13:40:03 -0800 |
commit | ea2b8a1c079d9184f53277f95a4d52c3c5a9f019 (patch) | |
tree | 5ec9aa82542909ecfc0859277d941528857a59b7 /tests/minus-zero.h | |
parent | cfddd4f332465a447e87b4c1523fb2b9133e7afd (diff) | |
download | m4-ea2b8a1c079d9184f53277f95a4d52c3c5a9f019.tar.gz |
Add 1.4.18 tarball contentsupstream
Test: none
Change-Id: Id75707b7a41aaaaf33046cf541bcb19ecb4d5851
Diffstat (limited to 'tests/minus-zero.h')
-rw-r--r-- | tests/minus-zero.h | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/tests/minus-zero.h b/tests/minus-zero.h new file mode 100644 index 0000000..d10d060 --- /dev/null +++ b/tests/minus-zero.h @@ -0,0 +1,74 @@ +/* Macros for floating-point negative zero. + Copyright (C) 2010-2016 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 <http://www.gnu.org/licenses/>. */ + +/* Keep in sync with m4/minus-zero.m4! */ + +#include <float.h> + + +/* minus_zerof represents the value -0.0f. */ + +/* HP cc on HP-UX 10.20 has a bug with the constant expression -0.0f. + ICC 10.0 has a bug when optimizing the expression -zero. + The expression -FLT_MIN * FLT_MIN does not work when cross-compiling + to PowerPC on Mac OS X 10.5. */ +#if defined __hpux || defined __sgi || defined __ICC +static float +compute_minus_zerof (void) +{ + return -FLT_MIN * FLT_MIN; +} +# define minus_zerof compute_minus_zerof () +#else +float minus_zerof = -0.0f; +#endif + + +/* minus_zerod represents the value -0.0. */ + +/* HP cc on HP-UX 10.20 has a bug with the constant expression -0.0. + ICC 10.0 has a bug when optimizing the expression -zero. + The expression -DBL_MIN * DBL_MIN does not work when cross-compiling + to PowerPC on Mac OS X 10.5. */ +#if defined __hpux || defined __sgi || defined __ICC +static double +compute_minus_zerod (void) +{ + return -DBL_MIN * DBL_MIN; +} +# define minus_zerod compute_minus_zerod () +#else +double minus_zerod = -0.0; +#endif + + +/* minus_zerol represents the value -0.0L. */ + +/* HP cc on HP-UX 10.20 has a bug with the constant expression -0.0L. + IRIX cc can't put -0.0L into .data, but can compute at runtime. + ICC 10.0 has a bug when optimizing the expression -zero. + The expression -LDBL_MIN * LDBL_MIN does not work when cross-compiling + to PowerPC on Mac OS X 10.5. */ +#if defined __hpux || defined __sgi || defined __ICC +static long double +compute_minus_zerol (void) +{ + return -LDBL_MIN * LDBL_MIN; +} +# define minus_zerol compute_minus_zerol () +#else +long double minus_zerol = -0.0L; +#endif |