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-rw-r--r--include/ceres/internal/autodiff.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/ceres/internal/autodiff.h b/include/ceres/internal/autodiff.h
index cf21d7a..3a96625 100644
--- a/include/ceres/internal/autodiff.h
+++ b/include/ceres/internal/autodiff.h
@@ -172,7 +172,7 @@ inline void Make1stOrderPerturbation(int offset, const T* src, JetT* dst) {
for (int j = 0; j < N; ++j) {
dst[j].a = src[j];
dst[j].v.setZero();
- dst[j].v[offset + j] = 1.0;
+ dst[j].v[offset + j] = T(1.0);
}
}