@misc{preprint-bernstein-logagm ,note={URL: {\tt http://cr.yp.to/\allowbreak papers.html\#\allowbreak logagm}} ,author={Daniel J. Bernstein} ,ID={8f92b1e3ec7918d37b28b9efcee5e97f} ,title={{Computing logarithm intervals with the arithmetic-geometric-mean iteration}} }