//进位

    float numberToRound;

    NSInteger result;

    float totalloc = self.specifArray.count / 2;

    result = (NSInteger)ceilf(totalloc);

result = (NSInteger)roundf(<#float#>) //输出  roundf(5.61) = 6;

     roundf(5.41) = 6;

result = (NSInteger)ceilf(<#float#>)  //输出  roundf(5.61) = 6;

result = (NSInteger)floor(<#double#>)  //输出  roundf(5.61) = 5;