How do I calculate power-of in C

Question

I m not that great with maths and C  doesn t seem to provide a power-of function so I was wondering if anyone knows how I would run a calculation like this   var dimensions     100 100     100 00 3 00

User · Answer

The function you want is Math Pow in System Math

User · Answer

Do not use Math Pow  When i use  for  int i   0  i  lt  10e7  i          var x3   x   x   x      var y3   y   y   y      It only takes 230 ms whereas the following takes incredible 7050 ms   for  int i   0  i  lt  10e7  i          var x3   Math Pow x  3       var y3   Math Pow x  3

User · Answer

For powers of 2   var twoToThePowerOf   1  lt  lt  yourExponent     eg  1  lt  lt  12    4096

User · Answer

I m answering this question because I don t find any answer why the   don t work for powers  The   operator in C  is an exclusive or operator shorten as XOR  The truth table of A   B shows that it outputs true whenever the inputs differ      Input A Input B Output     0 0 0   0 1 1   1 0 1   1 1 0     Witch means that 100   3 does this calculation under the hood  hex   binary 100   0110 0100    3   0000 0011 ---   ---------   103   0110 0111  With is of course not the same as Math Pow 100  3  with results to one million  You can use that or one of the other existing answers   You could also shorten your code to this that gives the same result because C  respects the order of operations  double dimensions   100   100   Math Pow 100  3         0 01

User · Answer

See Math Pow  The function takes a value and raises it to a specified power   Math Pow 100 00  3 00      100 00   3 00

User · Answer

Math Pow   returns double so nice would be to write like this   double d   Math Pow 100 00  3 00

User · Answer

Following is the code calculating power of decimal value for RaiseToPower for both -ve and  ve values    public decimal Power decimal number  decimal raiseToPower                        decimal result   0              if  raiseToPower  lt  0                                raiseToPower    -1                  result   1   number                  for  int i   1  i  lt  raiseToPower  i                                          result    number                                              else                               result   number                  for  int i   0  i  lt   raiseToPower  i                                          result    number                                              return result

User · Answer

You are looking for the static method Math Pow

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