16 enum { DontAlignCols = 1 };
17 enum { StreamPrecision = -1,
21 template<
typename Derived>
22 std::ostream & print_matrix(std::ostream & s,
const Derived& _m,
const IOFormat& fmt);
53 IOFormat(
int _precision = StreamPrecision,
int _flags = 0,
54 const std::string& _coeffSeparator =
" ",
55 const std::string& _rowSeparator =
"\n",
const std::string& _rowPrefix=
"",
const std::string& _rowSuffix=
"",
56 const std::string& _matPrefix=
"",
const std::string& _matSuffix=
"")
57 : matPrefix(_matPrefix), matSuffix(_matSuffix), rowPrefix(_rowPrefix), rowSuffix(_rowSuffix), rowSeparator(_rowSeparator),
58 rowSpacer(
""), coeffSeparator(_coeffSeparator), precision(_precision), flags(_flags)
62 if((flags & DontAlignCols))
64 int i = int(matSuffix.length())-1;
65 while (i>=0 && matSuffix[i]!=
'\n')
71 std::string matPrefix, matSuffix;
72 std::string rowPrefix, rowSuffix, rowSeparator, rowSpacer;
73 std::string coeffSeparator;
93 template<
typename ExpressionType>
99 : m_matrix(matrix), m_format(format)
102 friend std::ostream & operator << (std::ostream & s,
const WithFormat& wf)
104 return internal::print_matrix(s, wf.m_matrix.eval(), wf.m_format);
108 typename ExpressionType::Nested m_matrix;
117 template<
typename Scalar>
118 struct significant_decimals_impl
120 static inline int run()
128 template<
typename Derived>
129 std::ostream & print_matrix(std::ostream & s,
const Derived& _m,
const IOFormat& fmt)
133 s << fmt.matPrefix << fmt.matSuffix;
137 typename Derived::Nested m = _m;
138 typedef typename Derived::Scalar Scalar;
142 std::streamsize explicit_precision;
143 if(fmt.precision == StreamPrecision)
145 explicit_precision = 0;
147 else if(fmt.precision == FullPrecision)
149 if (NumTraits<Scalar>::IsInteger)
151 explicit_precision = 0;
155 explicit_precision = significant_decimals_impl<Scalar>::run();
160 explicit_precision = fmt.precision;
163 std::streamsize old_precision = 0;
164 if(explicit_precision) old_precision = s.precision(explicit_precision);
166 bool align_cols = !(fmt.flags & DontAlignCols);
170 for(
Index j = 0; j < m.cols(); ++j)
171 for(
Index i = 0; i < m.rows(); ++i)
173 std::stringstream sstr;
175 sstr << m.coeff(i,j);
176 width = std::max<Index>(width,
Index(sstr.str().length()));
180 for(
Index i = 0; i < m.rows(); ++i)
185 if(width) s.width(width);
187 for(
Index j = 1; j < m.cols(); ++j)
189 s << fmt.coeffSeparator;
190 if (width) s.width(width);
194 if( i < m.rows() - 1)
195 s << fmt.rowSeparator;
198 if(explicit_precision) s.precision(old_precision);
215 template<
typename Derived>
216 std::ostream &
operator <<
220 return internal::print_matrix(s, m.eval(), EIGEN_DEFAULT_IO_FORMAT);