cc [ flags ] -I/usr/local/include file(s) -L/usr/local/lib -lmcw [ ... ] #include <mathcw.h> extern float ceilf (float x); extern double ceil (double x); extern long double ceill (long double x); extern __float80 ceilw (__float80 x); extern __float128 ceilq (__float128 x); extern long_long_double ceilll (long_long_double x); extern decimal_float ceildf (decimal_float x); extern decimal_double ceild (decimal_double x); extern decimal_long_double ceildl (decimal_long_double x); extern decimal_long_long_double ceildll (decimal_long_long_double x);
NB: Functions with prototypes containing underscores in type names may be available only with certain extended compilers.
Caution: Depending on the argument size and precision, the result may be too large to store in a variable of some integer type, even though it is exactly representable as a floating-point value.