/*
* Copyright 2016-2017, Intel Corporation
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* * Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* ex_common.h -- examples utilities
*/
#ifndef EX_COMMON_H
#define EX_COMMON_H
#include <stdint.h>
#define MIN(a, b) (((a) < (b)) ? (a) : (b))
#ifdef __cplusplus
extern "C" {
#endif
#ifndef _WIN32
#include <unistd.h>
#define CREATE_MODE_RW (S_IWUSR | S_IRUSR)
/*
* file_exists -- checks if file exists
*/
static inline int
file_exists(char const *file)
{
return access(file, F_OK);
}
/*
* find_last_set_64 -- returns last set bit position or -1 if set bit not found
*/
static inline int
find_last_set_64(uint64_t val)
{
return 64 - __builtin_clzll(val) - 1;
}
#else
#include <windows.h>
#include <corecrt_io.h>
#include <process.h>
#define CREATE_MODE_RW (S_IWRITE | S_IREAD)
/*
* file_exists -- checks if file exists
*/
static inline int
file_exists(char const *file)
{
return _access(file, 0);
}
/*
* find_last_set_64 -- returns last set bit position or -1 if set bit not found
*/
static inline int
find_last_set_64(uint64_t val)
{
DWORD lz = 0;
if (BitScanReverse64(&lz, val))
return (int)lz;
else
return -1;
}
#endif
#ifdef __cplusplus
}
#endif
#endif /* ex_common.h */