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version 1/111030 by Erik Temple

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  • Chapter - Useful phrases


    Section - Mathematical functions

    To decide what number is ABS/absolute value/-- of/-- (N - a number):
        if N < 0, decide on 0 - N;
        decide on N.

    [Greatest common divisor function from Ben Cressey: http://www.intfiction.org/forum/viewtopic.php?f=7&t=3424]
    To decide what number is the greatest common divisor of (A - a number) and (B - a number):
        if b is 0, decide on A;
        decide on the greatest common divisor of B and the remainder after dividing A by B.