Negative Function

Comments

• -=Den=-

  August 2006 edited August 2006

  NOT is a boolean operation.
  
  signed integer -2 147 483 648...+2 147 483 647
  
  in hex (negative) 0XFFFFFFFF80000000 (-2 147 483 648) ... 0XFFFFFFFFFFFFFFFF( -1)
  positive 0X0000000000000000(0) .... 0X0000000080000000(+2 147 483 647)
  
  for example you have 4 (0X0000000000000004), not (4) inverts all bits and you get 0XFFFFFFFFFFFFFFFB (-5).
  
  in binary:
  0000000000000000000000000000000000000000000000000000000000000100(4)
  inverted
  1111111111111111111111111111111111111111111111111111111111111011(-5)
  
  I don't know why you especting to get -4
• omik_1

  August 2006 edited 12:04PM

  OK Den thanks for the information, I am learning every day.
  
  What is the simplest way to get the negative of a positive number or the positive of a negative number?
  
  eg. 4 to -4 or -4 to 4
  
  I am currently using this formual (-1)X mutiplyling the number by -1
  
  (-1)4 = -4 and
  (-1)-4 = 4
  
  Regards
  
• -=Den=-

  August 2006 edited 12:04PM

  wrote:

  I am currently using this formual (-1)X mutiplyling the number by -1

  Now you use correct method
• omik_1

  February 2017 edited 12:04PM

  
  
  All these years have past. I remember when i just started using Fast Reports