Developer's Daily | Unix by Example |
main | java | perl | unix | dev directory | web log |
ceil ? smallest integral value not less than x |
#include <math.h> double ceil (double x); |
The ceil() function rounds x upwards to the nearest integer, returning that value as a double. |
SVID 3, POSIX, BSD 4.3, ISO 9899 |
abs(3), fabs(3), floor(3), labs(3), rint(3) |