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Fix cudecompGetShiftedRank behavior with zero-displacement. #131

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Merged
romerojosh merged 1 commit into from
May 6, 2026
Merged

Fix cudecompGetShiftedRank behavior with zero-displacement. #131

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5 changes: 5 additions & 0 deletions src/cudecomp.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -1354,6 +1354,11 @@ cudecompResult_t cudecompGetShiftedRank(cudecompHandle_t handle, cudecompGridDes
if (dim < 0 || dim > 2) { THROW_INVALID_USAGE("dim argument out of range"); }
if (!shifted_rank) { THROW_INVALID_USAGE("shifted_rank argument cannot be null."); }

if (displacement == 0) {
*shifted_rank = handle->rank;
return CUDECOMP_RESULT_SUCCESS;
}

if (dim == axis) {
*shifted_rank = periodic ? handle->rank : -1;
return CUDECOMP_RESULT_SUCCESS;
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