isinf 164 include/ruby/missing.h # define isinf(x) (!finite(x) && !isnan(x)) isinf 17 missing/erf.c # define isinf(x) (!_finite(x) && !_isnan(x)) isinf 9 missing/isinf.c isinf(double n) isinf 37 missing/isinf.c isinf(double n) isinf 56 missing/isinf.c isinf(double n)