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| author | Yi Kong <yikong@google.com> | 2022-02-25 17:02:53 +0000 |
|---|---|---|
| committer | Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com> | 2022-02-25 17:02:53 +0000 |
| commit | edb0ad5bb04b48aab7dd0978f0475edd3550de7c (patch) | |
| tree | fb979fb4cf4f8052c8cc66b1ec9516d91fcd859b /doc/special_examples/Tutorial_sparse_example.cpp | |
| parent | 8fd413e275f78a4c240f1442ce5cf77c73a20a55 (diff) | |
| parent | bc0f5df265caa21a2120c22453655a7fcc941991 (diff) | |
| download | eigen-aml_uwb_331310030.tar.gz | |
Merge changes Iee153445,Iee274471 am: 79df15ea88 am: 10f298fc41 am: 7cb5001398 am: bc0f5df265aml_uwb_331910010aml_uwb_331820070aml_uwb_331613010aml_uwb_331611010aml_uwb_331410010aml_uwb_331310030aml_uwb_331115000aml_uwb_331015040aml_uwb_330810010aml_tz4_332714070aml_tz4_332714050aml_tz4_332714010aml_tz4_331910000aml_tz4_331314030aml_tz4_331314020aml_tz4_331314010aml_tz4_331012050aml_tz4_331012040aml_tz4_331012000aml_ase_331311020aml_ase_331112000aml_ase_331011020android13-mainline-uwb-releaseandroid13-mainline-tzdata4-releaseandroid13-mainline-appsearch-releaseaml_tz4_332714010
Original change: https://android-review.googlesource.com/c/platform/external/eigen/+/1999079
Change-Id: Ife39d10c8b23d3eeb174cd52f462f9d20527ad03
Diffstat (limited to 'doc/special_examples/Tutorial_sparse_example.cpp')
| -rw-r--r-- | doc/special_examples/Tutorial_sparse_example.cpp | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/doc/special_examples/Tutorial_sparse_example.cpp b/doc/special_examples/Tutorial_sparse_example.cpp index 830e196ea..8850db052 100644 --- a/doc/special_examples/Tutorial_sparse_example.cpp +++ b/doc/special_examples/Tutorial_sparse_example.cpp @@ -1,5 +1,6 @@ #include <Eigen/Sparse> #include <vector> +#include <iostream> typedef Eigen::SparseMatrix<double> SpMat; // declares a column-major sparse matrix type of double typedef Eigen::Triplet<double> T; @@ -9,10 +10,13 @@ void saveAsBitmap(const Eigen::VectorXd& x, int n, const char* filename); int main(int argc, char** argv) { - assert(argc==2); + if(argc!=2) { + std::cerr << "Error: expected one and only one argument.\n"; + return -1; + } int n = 300; // size of the image - int m = n*n; // number of unknows (=number of pixels) + int m = n*n; // number of unknowns (=number of pixels) // Assembly: std::vector<T> coefficients; // list of non-zeros coefficients |