Roger Hui wrote: > See also the essay in the J Wiki > http://www.jsoftware.com/jwiki/Essays/Logarithm_and_Exponential_(Extended_Precision)
Perhaps it is worth pointing out that exp and ln are sensitive to the representation of the argument, as in the discussion of 1p1. Naively equivalent arguments can have significantly different values, and the differences are magnified by the precision being used. 0j40": exp 0.002408597 1.0024115000000053605232609400393432850079 0j40": exp 2408597r1000000000 1.0024115000000053504529356718870476062262 0j40": exp x: 0.002408597 1.0024115000000029884975365923722529060429 John ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
