cc [ flags ] -I/usr/local/include file(s) -L/usr/local/lib -lmcw [ ... ] #include <mathcw.h> extern float dfactf (int n); extern double dfact (int n); extern long double dfactl (int n); extern __float80 dfactw (int n); extern __float128 dfactq (int n); extern long_long_double dfactll (int n); extern decimal_float dfactdf (int n); extern decimal_double dfactd (int n); extern decimal_long_double dfactdl (int n); extern decimal_long_long_double dfactdll (int n);
NB: Functions with prototypes containing underscores in type names may be available only with certain extended compilers.
The starting values are (-1)!! = 0!! = 1!! = 1.