py/sequence.c

#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <assert.h>

#include "nlr.h"
#include "misc.h"
#include "mpconfig.h"
#include "qstr.h"
#include "obj.h"
#include "map.h"
#include "runtime0.h"
#include "runtime.h"

// Helpers for sequence types

// Implements backend of sequence * integer operation. Assumes elements are
// memory-adjacent in sequence.
void mp_seq_multiply(const void *items, uint item_sz, uint len, uint times, void *dest) {
    for (int i = 0; i < times; i++) {
        uint copy_sz = item_sz * len;
        memcpy(dest, items, copy_sz);
        dest = (char*)dest + copy_sz;
    }
}