7 lines
200 B
Factor
7 lines
200 B
Factor
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USING: kernel math math.functions prettyprint ;
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IN: rosetta-code.arithmetic-geometric-mean
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: agm ( a g -- a' g' ) 2dup [ + 0.5 * ] 2dip * sqrt ;
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1 1 2 sqrt / [ 2dup - 1e-15 > ] [ agm ] while drop .
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