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18 changes: 18 additions & 0 deletions tests/common/common.h
Original file line number Diff line number Diff line change
Expand Up @@ -752,4 +752,22 @@ inline bool kernel_supports_wg_size(sycl_cts::util::logger& log,
} \
} \
}

/// Linearizes a multi-dimensional index according to the specification.
template <unsigned int dimension>
size_t linearize(sycl::range<dimension> range, sycl::id<dimension> id);

inline size_t linearize(sycl::range<1> range, sycl::id<1> id) {
static_cast<void>(range);
return id[0];
}

inline size_t linearize(sycl::range<2> range, sycl::id<2> id) {
return id[1] + id[0] * range[1];
}

inline size_t linearize(sycl::range<3> range, sycl::id<3> id) {
return id[2] + id[1] * range[2] + id[0] * range[1] * range[2];
}

#endif // __SYCLCTS_TESTS_COMMON_COMMON_H
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