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Regarding sumation of floating points

Discussion in 'C' started by joeserhal, Sep 16, 2008.

  1. joeserhal

    joeserhal New Member

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    Hi there,
    I have a question about coding with single precision floating point numbers (i.e, float)...how can I sum a certain number of floating pt #s within an interval...let's say I want to add a 100 numbers, starting from 1 within the interval [1,2) ? :confused:

    Anybody knows how can this be done?

    Any info would be greatly appreciated! ;)
     
  2. xpi0t0s

    xpi0t0s Mentor

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    How about something like the following:
    Code:
    float total=0;
    for (int i=0; i<100; i++)
      total+= some_number();
    
     
  3. oogabooga

    oogabooga New Member

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    I think he meant something more like this:
    Code:
      float x;
      float sum = 0.0;
      for (x = 1.00; x < 2.00; x += 0.01)
        sum += x;
      printf ("%.2f\n", sum); // this rounds the result
    
     

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