Files
ceres-solver/internal/ceres
Sameer Agarwal 37516c968c Fix a bug in InnerProductComputer.
InnerProductComputer was assuming that the input matrix had
at least one structurally non-zero block. As a result sometimes
when InnerProductComputer.SubMatrix test generated matrices
where the submatrix was structurally zero it would cause
a segmentation fault.

This changes fixes this issue and reduces the threshold for the
minimum block density so that there is a much higher chance of
such matrices occuring as part of testing.

Fixes https://github.com/ceres-solver/ceres-solver/issues/820

Change-Id: Iec3a2431e646f0c2aac9e0b994531fa72323f329
2022-08-07 12:56:42 -07:00
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