lib/mem.c


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#include "string.h"

void*
memset(void *dest, char c, size_t n)
{
    char *a = dest;
    for(size_t i = 0; i < n; i++) a[i] = c;
    return dest;
}

void*
memcpy(void *dest, const void *src, size_t n)
{
    char *a = dest;
    const char *b = src;
    for(size_t i = 0; i < n; i++) a[i] = b[i];
    return dest;
}

void*
memmove(void *dest, const void *src, size_t n)
{
    char buffer[n];
    memcpy(buffer, src, n);
    memcpy(dest, buffer, n);
    return dest;
}