10 #ifndef EIGEN_NUMTRAITS_H
11 #define EIGEN_NUMTRAITS_H
51 template<
typename T>
struct GenericNumTraits
54 IsInteger = std::numeric_limits<T>::is_integer,
55 IsSigned = std::numeric_limits<T>::is_signed,
57 RequireInitialization = internal::is_arithmetic<T>::value ? 0 : 1,
64 typedef typename internal::conditional<
66 typename internal::conditional<sizeof(T)<=2, float, double>::type,
72 static inline Real epsilon()
74 #if defined(__CUDA_ARCH__)
75 return internal::device::numeric_limits<T>::epsilon();
77 return std::numeric_limits<T>::epsilon();
81 static inline Real dummy_precision()
89 static inline T highest() {
90 #if defined(__CUDA_ARCH__)
91 return (internal::device::numeric_limits<T>::max)();
93 return (std::numeric_limits<T>::max)();
98 static inline T lowest() {
99 #if defined(__CUDA_ARCH__)
100 return IsInteger ? (internal::device::numeric_limits<T>::min)() : (-(
internal::device::numeric_limits<T>::max)());
102 return IsInteger ? (std::numeric_limits<T>::min)() : (-(
std::numeric_limits<T>::max)());
107 template<
typename T>
struct NumTraits : GenericNumTraits<T>
111 : GenericNumTraits<float>
114 static inline float dummy_precision() {
return 1e-5f; }
117 template<>
struct NumTraits<double> : GenericNumTraits<double>
120 static inline double dummy_precision() {
return 1e-12; }
123 template<>
struct NumTraits<long double>
124 : GenericNumTraits<long double>
126 static inline long double dummy_precision() {
return 1e-15l; }
129 template<
typename _Real>
struct NumTraits<
std::complex<_Real> >
130 : GenericNumTraits<std::complex<_Real> >
135 RequireInitialization = NumTraits<_Real>::RequireInitialization,
136 ReadCost = 2 * NumTraits<_Real>::ReadCost,
137 AddCost = 2 * NumTraits<Real>::AddCost,
138 MulCost = 4 * NumTraits<Real>::MulCost + 2 * NumTraits<Real>::AddCost
141 static inline Real epsilon() {
return NumTraits<Real>::epsilon(); }
142 static inline Real dummy_precision() {
return NumTraits<Real>::dummy_precision(); }
145 template<
typename Scalar,
int Rows,
int Cols,
int Options,
int MaxRows,
int MaxCols>
146 struct NumTraits<Array<Scalar, Rows, Cols, Options, MaxRows, MaxCols> >
148 typedef Array<Scalar, Rows, Cols, Options, MaxRows, MaxCols> ArrayType;
149 typedef typename NumTraits<Scalar>::Real RealScalar;
150 typedef Array<RealScalar, Rows, Cols, Options, MaxRows, MaxCols> Real;
151 typedef typename NumTraits<Scalar>::NonInteger NonIntegerScalar;
152 typedef Array<NonIntegerScalar, Rows, Cols, Options, MaxRows, MaxCols> NonInteger;
153 typedef ArrayType & Nested;
156 IsComplex = NumTraits<Scalar>::IsComplex,
157 IsInteger = NumTraits<Scalar>::IsInteger,
158 IsSigned = NumTraits<Scalar>::IsSigned,
159 RequireInitialization = 1,
160 ReadCost = ArrayType::SizeAtCompileTime==Dynamic ? Dynamic : ArrayType::SizeAtCompileTime * NumTraits<Scalar>::ReadCost,
161 AddCost = ArrayType::SizeAtCompileTime==Dynamic ? Dynamic : ArrayType::SizeAtCompileTime * NumTraits<Scalar>::AddCost,
162 MulCost = ArrayType::SizeAtCompileTime==Dynamic ? Dynamic : ArrayType::SizeAtCompileTime * NumTraits<Scalar>::MulCost
165 static inline RealScalar epsilon() {
return NumTraits<RealScalar>::epsilon(); }
166 static inline RealScalar dummy_precision() {
return NumTraits<RealScalar>::dummy_precision(); }
171 #endif // EIGEN_NUMTRAITS_H
Definition: StdDeque.h:58
Holds information about the various numeric (i.e. scalar) types allowed by Eigen. ...
Definition: NumTraits.h:107
Definition: Eigen_Colamd.h:54