CEIL(3) BSD Programmer's Manual CEIL(3) NNAAMMEE cceeiill - smallest integral value not greater than x SSYYNNOOPPSSIISS ##iinncclluuddee <<mmaatthh..hh>> _d_o_u_b_l_e cceeiill(_d_o_u_b_l_e _x); DDEESSCCRRIIPPTTIIOONN The cceeiill() function computes the smallest integral value not less than _x. RREETTUURRNN VVAALLUUEESS The cceeiill() function returns the smallest integral value expressed as a double. SSEEEE AALLSSOO abs(3), fabs(3), floor(3), rint(3), ieee(3), math.3 SSTTAANNDDAARRDDSS The cceeiill() function conforms to ANSI C X3.159-1989 (``ANSI C ''). 4.4BSD June 4, 1993 1