cc [ flags ] -I/usr/local/include file(s) -L/usr/local/lib -lmcw [ ... ] #include <mathcw.h> extern float ierfcf (float x); extern double ierfc (double x); extern long double ierfcl (long double x); extern __float80 ierfcw (__float80 x); extern __float128 ierfcq (__float128 x); extern long_long_double ierfcll (long_long_double x); extern decimal_float ierfcdf (decimal_float x); extern decimal_double ierfcd (decimal_double x); extern decimal_long_double ierfcdl (decimal_long_double x); extern decimal_long_long_double ierfcdll (decimal_long_long_double x);
NB: Functions with prototypes containing underscores in type names may be available only with certain extended compilers.
whereierfc(erfc(x)) = x
The value of x should be in the range [0, 2].erfc(x) = (2/sqrt(pi)) integral(t = x:Infinity) exp(-t**2) dt = 1 - erf(x)