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Transpose sparse matrix #13

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merged 3 commits into from
Sep 13, 2021
Merged

Transpose sparse matrix #13

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f16fb10
Transpose sparse matrix
geofjamg Sep 12, 2021
04be193
Fix
geofjamg Sep 12, 2021
eee3f5d
Clean CI
geofjamg Sep 12, 2021
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4 changes: 2 additions & 2 deletions .github/workflows/ci.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -11,7 +11,7 @@ jobs:
config:
- {
name: linux,
os: ubuntu-latest,
os: ubuntu-18.04,
cmake_options: '-DCMAKE_CXX_COMPILER=/usr/bin/g++-4.8 -DCMAKE_C_COMPILER=/usr/bin/gcc-4.8',
artifact_name: libmath.so,
artifact_path: linux_64
Expand All @@ -31,7 +31,7 @@ jobs:

steps:
- name: Install pre-requisites
if: matrix.config.os == 'ubuntu-latest'
if: matrix.config.name == 'linux'
run: sudo apt-get install g++-4.8 gcc-4.8 liblapack-dev libblas-dev

- name: Checkout sources
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34 changes: 34 additions & 0 deletions src/lu.cpp
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Expand Up @@ -356,6 +356,40 @@ JNIEXPORT jobject JNICALL Java_com_powsybl_math_matrix_SparseMatrix_times(JNIEnv
return nullptr;
}

/*
* Class: com.powsybl_math_matrix_SparseMatrix
* Method: transpose
* Signature: (II[I[I[D)Lcom/powsybl/math/matrix/SparseMatrix;
*/
JNIEXPORT jobject JNICALL Java_com_powsybl_math_matrix_SparseMatrix_transpose(JNIEnv * env, jobject, jint m, jint n, jintArray j_ap, jintArray j_ai, jdoubleArray j_ax) {
try {
powsybl::jni::IntArray ap(env, j_ap);
powsybl::jni::IntArray ai(env, j_ai);
powsybl::jni::DoubleArray ax(env, j_ax);

cs_di a;
a.nz = -1;
a.nzmax = ax.length();
a.m = m;
a.n = n;
a.p = ap.get();
a.i = ai.get();
a.x = ax.get();

cs_di* at = cs_di_transpose(&a, 1);

powsybl::jni::IntArray apt(env, at->p, at->n + 1);
powsybl::jni::IntArray ait(env, at->i, at->nzmax);
powsybl::jni::DoubleArray axt(env, at->x, at->nzmax);
return powsybl::jni::ComPowsyblMathMatrixSparseMatrix(env, at->m, at->n, apt, ait, axt).obj();
} catch (const std::exception& e) {
powsybl::jni::throwJavaLangRuntimeException(env, e.what());
} catch (...) {
powsybl::jni::throwJavaLangRuntimeException(env, "Unknown exception");
}
return nullptr;
}

#ifdef __cplusplus
}
#endif