#define CC_CHAR_IS_DELIMITER(c) ((c)<=' ')

int ccStrParseInt64( char *str, int64_t *retint )
{
  int negflag;
  char c;
  int64_t workint;
  *retint = 0;
  if( !str )
    return 0;
  negflag = 0;
  if( *str == '-' )
    negflag = 1;
  str += negflag;
  workint = 0;
  for( ; ; str++ )
  {
    c = *str;
    if( ( c >= '0' ) && ( c <= '9' ) )
    {
      if( workint >= (int64_t)0xcccccccccccccccLL )
        return 0;
      workint = ( workint * 10 ) + ( c - '0' );
    }
    else if( CC_CHAR_IS_DELIMITER( c ) )
      break;
    else
      return 0;
  }
  if( negflag )
    workint = -workint;
  *retint = workint;
  return 1;
}