/*
* Copyright (c) 2020 Red Hat, 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 2
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*
* $Id: //eng/uds-releases/jasper/src/uds/numeric.c#2 $
*/
#include "numeric.h"
#include "permassert.h"
#define STATIC_ASSERT_ALIGNOF(type, expectedAlignment) \
STATIC_ASSERT(__alignof__(type) == (expectedAlignment))
/**********************************************************************/
bool multiplyWouldOverflow(uint64_t a, uint64_t b)
{
return b != 0 && a > UINT64_MAX / b;
}
/**********************************************************************/
void numericCompileTimeAssertions(void)
{
STATIC_ASSERT_SIZEOF(uint64_t, 8);
STATIC_ASSERT_SIZEOF(uint32_t, 4);
STATIC_ASSERT_SIZEOF(uint16_t, 2);
STATIC_ASSERT_SIZEOF(UNALIGNED_WRAPPER(uint64_t), 8);
STATIC_ASSERT_SIZEOF(UNALIGNED_WRAPPER(uint32_t), 4);
STATIC_ASSERT_SIZEOF(UNALIGNED_WRAPPER(uint16_t), 2);
STATIC_ASSERT_ALIGNOF(UNALIGNED_WRAPPER(uint64_t), 1);
STATIC_ASSERT_ALIGNOF(UNALIGNED_WRAPPER(uint32_t), 1);
STATIC_ASSERT_ALIGNOF(UNALIGNED_WRAPPER(uint16_t), 1);
}