Fast function for moving files.

move.c

/** this was posted as a fast function for moving files... lolwat!? **/

/*
 * Fast function for moving files.
 * — Unlimiter
 */

// This function has been tested with 'https://norvig.com/big.txt' which has the size of 6488666 bytes, and the execution time was very close to null.
// At that point, it is very comparable to the 'mv' command on Linux.
void move(char* src_path, char* dest_path) {
  #include <stdio.h>
  FILE* src = fopen(src_path, "rb");
  FILE* dest = fopen(dest_path, "wb");
  
  fseek(src, 0, SEEK_END);
  unsigned long long src_size = ftell(src);
  rewind(src);
  
  char* buf;
  fread(buf, 1, src_size, src);
  fwrite(buf, 1, src_size, dest);
  
  remove(src_path);
}

// Uncomment the main function for testing through the command line.
/*
int main(int argc, char** argv) {
  if (argc > 2) {
    move(argv[1], argv[2]);
  }
}
*/