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Fix #3041: Add tuple support to reduce_sum autodiff helpers
- #3300
#3300
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Fix #3041: Add tuple support to reduce_sum autodiff helpers
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Commits on Mar 25, 2026
Add tuple support to apply_scalar_unary for autodiff
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Add tuple overloads for deep_copy_vars, save_varis, accumulate_adjoints
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Add MWE: reduce_sum with tuple(param, data) and STAN_THREADS
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Fix: use MATH= instead of STAN_MATH= for BridgeStan make override
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Revert "Add tuple support to apply_scalar_unary for autodiff"
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Trim includes, add docs and tests for tuple overloads
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Clean up MWE
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Add MWE
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[Jenkins] auto-formatting by clang-format version 10.0.0-4ubuntu1
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