source: mainline/kernel/generic/src/lib/mem.c

/*
 * Copyright (c) 2001-2004 Jakub Jermar
 * Copyright (c) 2008 Jiri Svoboda
 * All rights reserved.
 *
 * 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.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
 */

/** @addtogroup kernel_generic
 * @{
 */

/**
 * @file
 * @brief Memory string operations.
 *
 * This file provides architecture independent functions to manipulate blocks
 * of memory. These functions are optimized as much as generic functions of
 * this type can be.
 */

#include <memw.h>
#include <typedefs.h>

/** Fill block of memory.
 *
 * Fill cnt bytes at dst address with the value val.
 *
 * @param dst Destination address to fill.
 * @param cnt Number of bytes to fill.
 * @param val Value to fill.
 *
 */
void memsetb(void *dst, size_t cnt, uint8_t val)
{
        memset(dst, val, cnt);
}

/** Fill block of memory.
 *
 * Fill cnt words at dst address with the value val. The filling
 * is done word-by-word.
 *
 * @param dst Destination address to fill.
 * @param cnt Number of words to fill.
 * @param val Value to fill.
 *
 */
void memsetw(void *dst, size_t cnt, uint16_t val)
{
        size_t i;
        uint16_t *ptr = (uint16_t *) dst;

        for (i = 0; i < cnt; i++)
                ptr[i] = val;
}

/** @}
 */