ground/gcs/src/libs/eigen/blas/common.h

   1 // This file is part of Eigen, a lightweight C++ template library
   2 // for linear algebra.
   3 //
   4 // Copyright (C) 2009-2010 Gael Guennebaud <gael.guennebaud@inria.fr>
   5 //
   6 // This Source Code Form is subject to the terms of the Mozilla
   7 // Public License v. 2.0. If a copy of the MPL was not distributed
   8 // with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
   9
  10 #ifndef EIGEN_BLAS_COMMON_H
  11 #define EIGEN_BLAS_COMMON_H
  12
  13 #include <Eigen/Core>
  14 #include <Eigen/Jacobi>
  15
  16 #include <iostream>
  17 #include <complex>
  18
  19 #ifndef SCALAR
  20 #error the token SCALAR must be defined to compile this file
  21 #endif
  22
  23 #include <Eigen/src/misc/blas.h>
  24
  25
  26 #define NOTR    0
  27 #define TR      1
  28 #define ADJ     2
  29
  30 #define LEFT    0
  31 #define RIGHT   1
  32
  33 #define UP      0
  34 #define LO      1
  35
  36 #define NUNIT   0
  37 #define UNIT    1
  38
  39 #define INVALID 0xff
  40
  41 #define OP(X)   (   ((X)=='N' || (X)=='n') ? NOTR   \
  42                   : ((X)=='T' || (X)=='t') ? TR     \
  43                   : ((X)=='C' || (X)=='c') ? ADJ    \
  44                   : INVALID)
  45
  46 #define SIDE(X) (   ((X)=='L' || (X)=='l') ? LEFT   \
  47                   : ((X)=='R' || (X)=='r') ? RIGHT  \
  48                   : INVALID)
  49
  50 #define UPLO(X) (   ((X)=='U' || (X)=='u') ? UP     \
  51                   : ((X)=='L' || (X)=='l') ? LO     \
  52                   : INVALID)
  53
  54 #define DIAG(X) (   ((X)=='N' || (X)=='n') ? NUNIT  \
  55                   : ((X)=='U' || (X)=='u') ? UNIT   \
  56                   : INVALID)
  57
  58
  59 inline bool check_op(const char* op)
  60 {
  61   return OP(*op)!=0xff;
  62 }
  63
  64 inline bool check_side(const char* side)
  65 {
  66   return SIDE(*side)!=0xff;
  67 }
  68
  69 inline bool check_uplo(const char* uplo)
  70 {
  71   return UPLO(*uplo)!=0xff;
  72 }
  73
  74
  75 namespace Eigen {
  76 #include "BandTriangularSolver.h"
  77 #include "GeneralRank1Update.h"
  78 #include "PackedSelfadjointProduct.h"
  79 #include "PackedTriangularMatrixVector.h"
  80 #include "PackedTriangularSolverVector.h"
  81 #include "Rank2Update.h"
  82 }
  83
  84 using namespace Eigen;
  85
  86 typedef SCALAR Scalar;
  87 typedef NumTraits<Scalar>::Real RealScalar;
  88 typedef std::complex<RealScalar> Complex;
  89
  90 enum
  91 {
  92   IsComplex = Eigen::NumTraits<SCALAR>::IsComplex,
  93   Conj = IsComplex
  94 };
  95
  96 typedef Matrix<Scalar,Dynamic,Dynamic,ColMajor> PlainMatrixType;
  97 typedef Map<Matrix<Scalar,Dynamic,Dynamic,ColMajor>, 0, OuterStride<> > MatrixType;
  98 typedef Map<Matrix<Scalar,Dynamic,1>, 0, InnerStride<Dynamic> > StridedVectorType;
  99 typedef Map<Matrix<Scalar,Dynamic,1> > CompactVectorType;
 100
 101 template<typename T>
 102 Map<Matrix<T,Dynamic,Dynamic,ColMajor>, 0, OuterStride<> >
 103 matrix(T* data, int rows, int cols, int stride)
 104 {
 105   return Map<Matrix<T,Dynamic,Dynamic,ColMajor>, 0, OuterStride<> >(data, rows, cols, OuterStride<>(stride));
 106 }
 107
 108 template<typename T>
 109 Map<Matrix<T,Dynamic,1>, 0, InnerStride<Dynamic> > vector(T* data, int size, int incr)
 110 {
 111   return Map<Matrix<T,Dynamic,1>, 0, InnerStride<Dynamic> >(data, size, InnerStride<Dynamic>(incr));
 112 }
 113
 114 template<typename T>
 115 Map<Matrix<T,Dynamic,1> > vector(T* data, int size)
 116 {
 117   return Map<Matrix<T,Dynamic,1> >(data, size);
 118 }
 119
 120 template<typename T>
 121 T* get_compact_vector(T* x, int n, int incx)
 122 {
 123   if(incx==1)
 124     return x;
 125
 126   T* ret = new Scalar[n];
 127   if(incx<0) vector(ret,n) = vector(x,n,-incx).reverse();
 128   else       vector(ret,n) = vector(x,n, incx);
 129   return ret;
 130 }
 131
 132 template<typename T>
 133 T* copy_back(T* x_cpy, T* x, int n, int incx)
 134 {
 135   if(x_cpy==x)
 136     return 0;
 137
 138   if(incx<0) vector(x,n,-incx).reverse() = vector(x_cpy,n);
 139   else       vector(x,n, incx)           = vector(x_cpy,n);
 140   return x_cpy;
 141 }
 142
 143 #define EIGEN_BLAS_FUNC(X) EIGEN_CAT(SCALAR_SUFFIX,X##_)
 144
 145 #endif // EIGEN_BLAS_COMMON_H