diff options
Diffstat (limited to 'demos/mix_eigen_and_c/binary_library.h')
| -rw-r--r-- | demos/mix_eigen_and_c/binary_library.h | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/demos/mix_eigen_and_c/binary_library.h b/demos/mix_eigen_and_c/binary_library.h new file mode 100644 index 000000000..c41e7da10 --- /dev/null +++ b/demos/mix_eigen_and_c/binary_library.h @@ -0,0 +1,62 @@ +// This is a pure C header, no C++ here. +// The functions declared here will be implemented in C++ but +// we don't have to know, because thanks to the extern "C" syntax, +// they will be compiled to C object code. + +#ifdef __cplusplus +extern "C" +{ +#endif + + // just dummy empty structs to give different pointer types, + // instead of using void* which would be type unsafe + struct C_MatrixXd {}; + struct C_Map_MatrixXd {}; + + // the C_MatrixXd class, wraps some of the functionality + // of Eigen::MatrixXd. + struct C_MatrixXd* MatrixXd_new(int rows, int cols); + void MatrixXd_delete (struct C_MatrixXd *m); + double* MatrixXd_data (struct C_MatrixXd *m); + void MatrixXd_set_zero (struct C_MatrixXd *m); + void MatrixXd_resize (struct C_MatrixXd *m, int rows, int cols); + void MatrixXd_copy (struct C_MatrixXd *dst, + const struct C_MatrixXd *src); + void MatrixXd_copy_map (struct C_MatrixXd *dst, + const struct C_Map_MatrixXd *src); + void MatrixXd_set_coeff (struct C_MatrixXd *m, + int i, int j, double coeff); + double MatrixXd_get_coeff (const struct C_MatrixXd *m, + int i, int j); + void MatrixXd_print (const struct C_MatrixXd *m); + void MatrixXd_add (const struct C_MatrixXd *m1, + const struct C_MatrixXd *m2, + struct C_MatrixXd *result); + void MatrixXd_multiply (const struct C_MatrixXd *m1, + const struct C_MatrixXd *m2, + struct C_MatrixXd *result); + + // the C_Map_MatrixXd class, wraps some of the functionality + // of Eigen::Map<MatrixXd> + struct C_Map_MatrixXd* Map_MatrixXd_new(double *array, int rows, int cols); + void Map_MatrixXd_delete (struct C_Map_MatrixXd *m); + void Map_MatrixXd_set_zero (struct C_Map_MatrixXd *m); + void Map_MatrixXd_copy (struct C_Map_MatrixXd *dst, + const struct C_Map_MatrixXd *src); + void Map_MatrixXd_copy_matrix(struct C_Map_MatrixXd *dst, + const struct C_MatrixXd *src); + void Map_MatrixXd_set_coeff (struct C_Map_MatrixXd *m, + int i, int j, double coeff); + double Map_MatrixXd_get_coeff (const struct C_Map_MatrixXd *m, + int i, int j); + void Map_MatrixXd_print (const struct C_Map_MatrixXd *m); + void Map_MatrixXd_add (const struct C_Map_MatrixXd *m1, + const struct C_Map_MatrixXd *m2, + struct C_Map_MatrixXd *result); + void Map_MatrixXd_multiply (const struct C_Map_MatrixXd *m1, + const struct C_Map_MatrixXd *m2, + struct C_Map_MatrixXd *result); + +#ifdef __cplusplus +} // end extern "C" +#endif
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