#pragma once #include_next #if defined(HAVE_CMATH_ISFINITE) && defined(NEED_CMATH_ISFINITE_STD_NAMESPACE) using std::isfinite; #endif #if defined(HAVE_CMATH_ISINF) && defined(NEED_CMATH_ISINF_STD_NAMESPACE) using std::isinf; #endif #if defined(HAVE_CMATH_ISNAN) && defined(NEED_CMATH_ISNAN_STD_NAMESPACE) using std::isnan; #endif