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/*******************************************************************************
 * DESCRIPTION   : Standard library
 ******************************************************************************/
/******************************************************************************
 * @file          string.c
 * - Version      : 0.01
 * @brief         standard library.
 * .
 *****************************************************************************/
/******************************************************************************
 * History : DD.MM.YYYY Version  Description
 *         : 04.04.2023 0.01     First Release
 *****************************************************************************/

#include <stdint.h>
#include <stddef.h>
#include <string.h>

void *memcpy(void *dst, const void *src, size_t len)
{
    uint8_t *p1 = (uint8_t *)dst;
    const uint8_t *p2 = (const uint8_t *)src;
    while(len > 0U)
    {
        *(p1++) = *(p2++);
        len--;
    }
    return dst;
}
/* End of function memcpy( void* dst, const void* src, size_t n ) */

void *memset(void *dst, int val, size_t len)
{
    uint8_t *p = (uint8_t *)dst;
    const uint8_t uc = (uint8_t)val;

    while (len > 0U)
    {
        *p++ = uc;
        len--;
    }
    return (dst);
}
/* End of function memset(void *dst, int val, size_t len) */

/**
 * memcmp - Compare two areas of memory
 * @cs: One area of memory
 * @ct: Another area of memory
 * @count: The size of the area.
 */
int memcmp(const void * cs, const void * ct, size_t count)
{
	const unsigned char *su1, *su2;
	int res = 0;

	for( su1 = cs, su2 = ct; 0 < count; ++su1, ++su2, count--)
		if ((res = *su1 - *su2) != 0)
			break;
	return res;
}
