ceill (3) Linux Manual Page
ceil, ceilf, ceill – ceiling function: smallest integral value not less than argument Synopsis#include <math.h> double ceil(double x); float ceilf(float x); long double ceill(long double x);Link with -lm. Feature Test Macro Requirements for glibc (see feature_test_macros(7)): ceilf(), ceill(): _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L || /* Since glibc 2.19: */ _DEFAULT_SOURCE || /* Glibc versions <= 2.19: */ _BSD_SOURCE || _SVID_SOURCEDescriptionThese functions return the smallest integral value that is…
