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xgboost/tests/cpp/c_api/test_c_api.cc  view on Meta::CPAN

// Copyright by Contributors
#include <gtest/gtest.h>
#include <xgboost/c_api.h>
#include <xgboost/data.h>

TEST(c_api, XGDMatrixCreateFromMat_omp) {
  std::vector<int> num_rows = {100, 11374, 15000};
  for (auto row : num_rows) {
    int num_cols = 50;
    int num_missing = 5;
    DMatrixHandle handle;
    std::vector<float> data(num_cols * row, 1.5);
    for (int i = 0; i < num_missing; i++) {
      data[i] = std::numeric_limits<float>::quiet_NaN();
    }

    XGDMatrixCreateFromMat_omp(data.data(), row, num_cols,
                               std::numeric_limits<float>::quiet_NaN(), &handle,
                               0);

    std::shared_ptr<xgboost::DMatrix> dmat =
        *static_cast<std::shared_ptr<xgboost::DMatrix> *>(handle);
    xgboost::MetaInfo &info = dmat->info();
    ASSERT_EQ(info.num_col, num_cols);
    ASSERT_EQ(info.num_row, row);
    ASSERT_EQ(info.num_nonzero, num_cols * row - num_missing);

    auto iter = dmat->RowIterator();
    iter->BeforeFirst();
    while (iter->Next()) {
      auto batch = iter->Value();
      for (int i = 0; i < batch.size; i++) {
        auto inst = batch[i];
        for (int j = 0; i < inst.length; i++) {
          ASSERT_EQ(inst[j].fvalue, 1.5);
        }
      }
    }
  }
}