10 #ifndef EIGEN_NUMTRAITS_H 11 #define EIGEN_NUMTRAITS_H 20 bool use_numeric_limits = std::numeric_limits<T>::is_specialized,
21 bool is_integer = NumTraits<T>::IsInteger>
22 struct default_digits10_impl
24 static int run() {
return std::numeric_limits<T>::digits10; }
28 struct default_digits10_impl<T,false,false>
33 typedef typename NumTraits<T>::Real Real;
34 return int(
ceil(-
log10(NumTraits<Real>::epsilon())));
39 struct default_digits10_impl<T,false,true>
41 static int run() {
return 0; }
88 template<
typename T>
struct GenericNumTraits
91 IsInteger = std::numeric_limits<T>::is_integer,
92 IsSigned = std::numeric_limits<T>::is_signed,
94 RequireInitialization = internal::is_arithmetic<T>::value ? 0 : 1,
101 typedef typename internal::conditional<
103 typename internal::conditional<sizeof(T)<=2, float, double>::type,
110 static inline Real epsilon()
112 return numext::numeric_limits<T>::epsilon();
116 static inline int digits10()
118 return internal::default_digits10_impl<T>::run();
122 static inline Real dummy_precision()
130 static inline T highest() {
131 return (numext::numeric_limits<T>::max)();
135 static inline T lowest() {
136 return IsInteger ? (numext::numeric_limits<T>::min)() : (-(numext::numeric_limits<T>::max)());
140 static inline T infinity() {
141 return numext::numeric_limits<T>::infinity();
145 static inline T quiet_NaN() {
146 return numext::numeric_limits<T>::quiet_NaN();
150 template<
typename T>
struct NumTraits : GenericNumTraits<T>
154 : GenericNumTraits<float>
157 static inline float dummy_precision() {
return 1e-5f; }
160 template<>
struct NumTraits<double> : GenericNumTraits<double>
163 static inline double dummy_precision() {
return 1e-12; }
167 : GenericNumTraits<long double>
169 static inline long double dummy_precision() {
return 1e-15l; }
172 template<
typename _Real>
struct NumTraits<std::complex<_Real> >
173 : GenericNumTraits<std::complex<_Real> >
193 template<
typename Scalar,
int Rows,
int Cols,
int Options,
int MaxRows,
int MaxCols>
194 struct NumTraits<Array<Scalar, Rows, Cols, Options, MaxRows, MaxCols> >
201 typedef ArrayType & Nested;
208 RequireInitialization = 1,
223 : GenericNumTraits<std::string>
226 RequireInitialization = 1,
232 static inline int digits10() {
return 0; }
235 static inline std::string epsilon();
236 static inline std::string dummy_precision();
237 static inline std::string lowest();
238 static inline std::string highest();
239 static inline std::string infinity();
240 static inline std::string quiet_NaN();
248 #endif // EIGEN_NUMTRAITS_H const int HugeCost
Definition: Constants.h:39
Namespace containing all symbols from the Eigen library.
Definition: Core:287
Holds information about the various numeric (i.e. scalar) types allowed by Eigen. ...
Definition: NumTraits.h:150
const Eigen::CwiseUnaryOp< Eigen::internal::scalar_ceil_op< typename Derived::Scalar >, const Derived > ceil(const Eigen::ArrayBase< Derived > &x)
Definition: Eigen_Colamd.h:50
General-purpose arrays with easy API for coefficient-wise operations.
Definition: Array.h:45
const int Dynamic
Definition: Constants.h:21
const Eigen::CwiseUnaryOp< Eigen::internal::scalar_log10_op< typename Derived::Scalar >, const Derived > log10(const Eigen::ArrayBase< Derived > &x)