CEIL(3) BSD Programmer's Manual CEIL(3)
ceil, ceilf, floor, floorf - ceiling and floor
#include <math.h> double ceil(double x); float ceilf(float x); double floor(double x); float floorf(float x);
The ceil() and ceilf() functions return the smallest integral value greater than or equal to x. Conversely, the floor() and floorf() func- tions return the largest integral value less than or equal to x.
abs(3), fabs(3), math(3), nextafter(3), rint(3)
The described functions conform to ISO/IEC 9899:1999 ("ISO C99"). MirOS BSD #10-current September 18, 2011 1
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