如何memset()内存到某个模式而不是单个字节？

#include<stdio.h>
#include<string.h>

void memset_pattern(void *dest, size_t dest_size, const void *pattern, size_t pattern_size) {
    size_t i;
    for (i = 0; i< dest_size; i += pattern_size) {
        memcpy((char *)dest + i, pattern, pattern_size);
    }
}

int main() {
    char dest[100];
    char pattern[] = {0x01, 0x02, 0x03};
    memset_pattern(dest, sizeof(dest), pattern, sizeof(pattern));
    return 0;
}

#include<stdio.h>
#include<string.h>

int main() {
    char dest[100];
    char pattern[] = {0x01, 0x02, 0x03};
    memcpy(dest, pattern, sizeof(pattern));
    size_t i;
    for (i = sizeof(pattern); i< sizeof(dest); i += sizeof(pattern)) {
        memcpy(dest + i, pattern, sizeof(pattern));
    }
    return 0;
}