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    Stan Math Library
    5.1.0
    
   Automatic Differentiation 
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Returns a Matrix with values added along the main diagonal.
| T_m | type of input kernel generator expression for the input matrix | 
| T_a | type of input kernel generator expression to add along the diagonal | 
| mat | input kernel generator expression | 
| to_add | scalar value or input kernel generator expression to add along the diagonal | 
Definition at line 27 of file add_diag.hpp.