#include <boost/math/special_functions/trunc.hpp>
template <class T> T trunc(const T& v); template <class T, class Policy> T trunc(const T& v, const Policy&); template <class T> int itrunc(const T& v); template <class T, class Policy> int itrunc(const T& v, const Policy&); template <class T> long ltrunc(const T& v); template <class T, class Policy> long ltrunc(const T& v, const Policy&); template <class T> long long lltrunc(const T& v); template <class T, class Policy> long long lltrunc(const T& v, const Policy&); The trunc functions round their argument to the integer value, nearest to but no larger in magnitude than the argument.
For example If the argument v is either non-finite or else outside the range of the result type, then returns the result of rounding_error: by default this throws an instance of boost::math::rounding_error. |