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bug fix for MMWrite (invalid output on array format) #253

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merged 4 commits into from
Jul 1, 2024
Merged

bug fix for MMWrite (invalid output on array format) #253

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c6dcf33
Merge pull request #243 from GraphBLAS/v1.1_branch
DrTimothyAldenDavis Dec 30, 2023
a1a1381
Merge pull request #245 from GraphBLAS/v1.1_branch
DrTimothyAldenDavis Jan 10, 2024
3b461aa
Merge pull request #246 from GraphBLAS/v1.1_branch
DrTimothyAldenDavis Jan 25, 2024
275a986
bug fix for MMWrite (invalid output on array format)
tweska Jun 26, 2024
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2 changes: 1 addition & 1 deletion data/comments_full.mtx
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Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,7 @@
%%GraphBLAS type double
% comments for full.mtx
% this file was created by test_MMRead.c
3 3 9
3 3
.646
.709
.754
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14 changes: 12 additions & 2 deletions src/utility/LAGraph_MMWrite.c
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Original file line number Diff line number Diff line change
Expand Up @@ -459,8 +459,18 @@ int LAGraph_MMWrite
nvals_to_print = nself_edges + (nvals - nself_edges) / 2 ;
}

FPRINTF (f, "%" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
nrows, ncols, nvals_to_print) ;
if (MM_fmt == MM_array)
{
// write `nrows ncols` if the array format is used
FPRINTF (f, "%" PRIu64 " %" PRIu64 "\n",
nrows, ncols) ;
}
else
{
// otherwise write `nrows ncols nvals` for the coordinate format
FPRINTF (f, "%" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
nrows, ncols, nvals_to_print) ;
}

if (nvals_to_print == 0)
{
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