Function bchange

strings/bchange.c:30–39

#include "m_string.h"

void bchange(register uchar *dst, size_t old_length, register const uchar *src,
	     size_t new_length, size_t tot_length)
{
  size_t rest=tot_length-old_length;
  if (old_length < new_length)
    bmove_upp(dst+rest+new_length,dst+tot_length,rest);
  else
    bmove(dst+new_length,dst+old_length,rest);
  memcpy(dst,src,new_length);
}