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Math functions in Object-C

Math functions in Object-C

作者: Nirvana_icy | 来源:发表于2015-03-31 14:28 被阅读13次
  1. double pow ( double, double ) - power of
    NSLog(@"%.f", pow(3,2) ); //result 9
  2. double sqrt( double ) - square root
    NSLog(@"%.f", sqrt(16) ); //result 4
  3. double ceil ( double ) - if the argument has any decimal part, returns the next bigger integer
    NSLog(@"res: %.f", ceil(3.000000000001)); //result 4
    NSLog(@"res: %.f", ceil(3.00)); //result 3
  4. double floor ( double ) - removes the decimal part of the argument
    NSLog(@"res: %.f", floor(3.9999999));
  5. double round ( double ) - rounds the argument
    NSLog(@"res: %.f", round(3.46)); //result 3

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