Compagnie des Machines Bull SA chose late Friday to announce its first half results, saying they showed it was improving its performance ahead of plan and was now confident it could break even at the operating level next year: Bull saw a net current loss before provisions, equivalent to $158m, down from $371m last year; the operating loss was cut to $81m; sales were encouragingly up by 11% to $2,600m; Bull made an additional $133m provision for restructuring, in line with its restructuring plan; it saw 55% sales growth at Zenith Data Systems, 21% at its Emerging Technologies Division and 25% at the Bull Overseas Network; hardware and software orders were up by 29% compared with the first half of 1993.