/usr/include/atomic_ops/sysdeps/loadstore/double_atomic_load_store.h is in libatomic-ops-dev 7.6.2-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 | /*
* Copyright (c) 2004 Hewlett-Packard Development Company, L.P.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/* Definitions for architectures on which AO_double_t loads and stores */
/* are atomic (either for suitably aligned data only or for any legal */
/* alignment). */
AO_INLINE AO_double_t
AO_double_load(const volatile AO_double_t *addr)
{
AO_double_t result;
# ifdef AO_ACCESS_double_CHECK_ALIGNED
assert(((size_t)addr & (sizeof(AO_double_t) - 1)) == 0);
# endif
/* Cast away the volatile in case it adds fence semantics. */
result.AO_whole = ((const AO_double_t *)addr)->AO_whole;
return result;
}
#define AO_HAVE_double_load
AO_INLINE void
AO_double_store(volatile AO_double_t *addr, AO_double_t new_val)
{
# ifdef AO_ACCESS_double_CHECK_ALIGNED
assert(((size_t)addr & (sizeof(AO_double_t) - 1)) == 0);
# endif
((AO_double_t *)addr)->AO_whole = new_val.AO_whole;
}
#define AO_HAVE_double_store
|