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initial headers for dense Matrix (not matrix)
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| Original file line number | Diff line number | Diff line change |
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| #pragma once | ||
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| #include "cpp11/R.hpp" | ||
| #include "cpp11/r_vector.hpp" | ||
| #include "cpp11/sexp.hpp" | ||
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| // dgeMatrix: Class "dgeMatrix" of Dense Numeric (S4 Class) Matrices | ||
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| namespace cpp11 { | ||
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| template <typename S = by_column> | ||
| class dge_matrix { | ||
| private: | ||
| writable::r_vector<double> vector_; | ||
| int nrow_; | ||
| int ncol_; | ||
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| public: | ||
| dge_matrix(SEXP data) { | ||
| SEXP x_slot = R_do_slot(data, Rf_install("x")); | ||
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| // get dimensions | ||
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| // nrow_ = Rf_nrows(data); | ||
| // ncol_ = Rf_ncols(data); | ||
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| // use attr instead (Matrix != matrix class) | ||
| SEXP dim = R_do_slot(data, Rf_install("Dim")); | ||
| nrow_ = INTEGER(dim)[0]; | ||
| ncol_ = INTEGER(dim)[1]; | ||
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| if (nrow_ <= 0 || ncol_ <= 0) { | ||
| throw std::runtime_error("Invalid matrix dimensions"); | ||
| } | ||
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| vector_ = writable::r_vector<double>(Rf_allocVector(REALSXP, Rf_length(x_slot))); | ||
| for (int i = 0; i < Rf_length(x_slot); ++i) { | ||
| vector_[i] = REAL(x_slot)[i]; | ||
| } | ||
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| SEXP dims = PROTECT(Rf_allocVector(INTSXP, 2)); | ||
| INTEGER(dims)[0] = nrow_; | ||
| INTEGER(dims)[1] = ncol_; | ||
| vector_.attr(R_DimSymbol) = dims; | ||
| UNPROTECT(1); | ||
| } | ||
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| int nrow() const { return nrow_; } | ||
| int ncol() const { return ncol_; } | ||
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| double operator()(int row, int col) const { return vector_[row + (col * nrow_)]; } | ||
| }; | ||
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| namespace writable { | ||
| template <typename S = by_column> | ||
| using dge_matrix = cpp11::dge_matrix<S>; | ||
| } // namespace writable | ||
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| } // namespace cpp11 | ||
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| // dsyMatrix: Symmetric Dense (Packed or Unpacked) Numeric Matrices | ||
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| namespace cpp11 { | ||
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| template <typename S = by_column> | ||
| class dsy_matrix { | ||
| private: | ||
| writable::r_vector<double> vector_; | ||
| int nrow_; | ||
| int ncol_; | ||
| bool is_packed_; | ||
| bool is_upper_; | ||
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| public: | ||
| dsy_matrix(SEXP data) { | ||
| SEXP x_slot = R_do_slot(data, Rf_install("x")); | ||
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| // use attr instead (Matrix != matrix class) | ||
| SEXP dim = R_do_slot(data, Rf_install("Dim")); | ||
| nrow_ = INTEGER(dim)[0]; | ||
| ncol_ = INTEGER(dim)[1]; | ||
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| if (nrow_ <= 0 || ncol_ <= 0) { | ||
| throw std::runtime_error("Invalid matrix dimensions"); | ||
| } | ||
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| // Check if the matrix is packed and if it's upper or lower triangular | ||
| SEXP uplo = R_do_slot(data, Rf_install("uplo")); | ||
| is_upper_ = (Rf_asChar(uplo) == Rf_mkChar("U")); | ||
| is_packed_ = (Rf_length(x_slot) == (nrow_ * (nrow_ + 1)) / 2); | ||
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| vector_ = writable::r_vector<double>(Rf_allocVector(REALSXP, Rf_length(x_slot))); | ||
| for (int i = 0; i < Rf_length(x_slot); ++i) { | ||
| vector_[i] = REAL(x_slot)[i]; | ||
| } | ||
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| SEXP dims = PROTECT(Rf_allocVector(INTSXP, 2)); | ||
| INTEGER(dims)[0] = nrow_; | ||
| INTEGER(dims)[1] = ncol_; | ||
| vector_.attr(R_DimSymbol) = dims; | ||
| UNPROTECT(1); | ||
| } | ||
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| int nrow() const { return nrow_; } | ||
| int ncol() const { return ncol_; } | ||
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| double operator()(int row, int col) const { | ||
| if (is_packed_) { | ||
| if (is_upper_) { | ||
| if (row <= col) { | ||
| return vector_[col * (col + 1) / 2 + row]; | ||
| } else { | ||
| return vector_[row * (row + 1) / 2 + col]; | ||
| } | ||
| } else { | ||
| if (row >= col) { | ||
| return vector_[row * (row + 1) / 2 + col]; | ||
| } else { | ||
| return vector_[col * (col + 1) / 2 + row]; | ||
| } | ||
| } | ||
| } else { | ||
| return vector_[row + (col * nrow_)]; | ||
| } | ||
| } | ||
| }; | ||
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| namespace writable { | ||
| template <typename S = by_column> | ||
| using dsy_matrix = cpp11::dsy_matrix<S>; | ||
| } // namespace writable | ||
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| } // namespace cpp11 |