third_party/ulib/musl/src/string/swab.c

#include <unistd.h>

void swab(const void* restrict _src, void* restrict _dest, ssize_t n) {
    const char* src = _src;
    char* dest = _dest;
    for (; n > 1; n -= 2) {
        dest[0] = src[1];
        dest[1] = src[0];
        dest += 2;
        src += 2;
    }
}