Triangular Number Function - Printable Version

Triangular Number Function - Printable Version

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Triangular Number Function - Arctic - 07-29-2003

This is just a small function to return the nth triangular number... I can't think of an application at this time, I was just bored in math class. Smile

The first code has to do with summation notation (sigma for you math gurus)

Code:
FUNCTION NTriNum& (n&)

  FOR x = 1 TO n&

    result& = result& + x

  NEXT x

  NTriNum& = result&

END FUNCTION

OR:

The second code is simply the fomula derived from the summation...

Code:
Function NTriNum&(n&)

  NTriNum& = ((n&^2) + n&) \ 2

END FUNCTION

Note: I tested them with longs so I could see the 10,000th triangular number, which was 50,005,000 just in case anyone was wondering Smile

Triangular Number Function - oracle - 07-30-2003

Wait until StatLib comes out, you'll be able to do the 1,000,000,000,000,000,000,000,000,000,000,000,000,000....th triangle number with ease...

Triangular Number Function - Flexibal - 07-30-2003

are you using strings to represent numbers? or BCD? or what?

[Flexibal>