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HDFFV-10601: I changed to a better way to calculate the number of chunks in a dataset.

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Songyu Lu 2018-11-08 15:41:49 -06:00
parent 709704528c
commit 3a13bb72e8
1 changed files with 3 additions and 5 deletions
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8
src/H5Dchunk.c
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@ -950,11 +950,9 @@ H5D__chunk_init(H5F_t *f, const H5D_t *dset, hid_t dapl_id)
if(dset->shared->layout.u.chunk.dim[u] == 0)
HGOTO_ERROR(H5E_DATASET, H5E_BADVALUE, FAIL, "chunk size must be > 0, dim = %u ", u)
/* Make a special case when the dimension is 0 because (0 - 1) is a big number for unsigned integer */
if(dset->shared->curr_dims[u] == 0)
rdcc->scaled_dims[u] = 0;
else
rdcc->scaled_dims[u] = ((dset->shared->curr_dims[u] - 1) / dset->shared->layout.u.chunk.dim[u]) + 1;
/* Round up to the next integer # of chunks, to accommodate partial chunks */
rdcc->scaled_dims[u] = (dset->shared->curr_dims[u] + dset->shared->layout.u.chunk.dim[u] - 1) /
dset->shared->layout.u.chunk.dim[u];
if( !(scaled_power2up = H5VM_power2up(rdcc->scaled_dims[u])) )
HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "unable to get the next power of 2")