Calculation of the nearest integer

K. Bulota, “Recurrence formulas for calculating fractional parts,” in: Abstracts of Reports to the 24th Conference of the Lithuanian Mathematical Society [in Russian], Vilnius (1983). K. Bulota, “An algorithm of Euler,” in: Abstracts of Reports to the 25th Conference of the Lithuanian Mathematical Society [in Russian], Vilnius (1984). A. K. Sushkevich, Number Theory [in Russian], Kharkov State Univ. (1954).