#117 - add_diag

Author: mitzimorris

src/functions-reference/matrix_operations.Rmd

@@ -852,6 +852,24 @@ automatically promoted.
 
 ## Diagonal Matrix Functions
 
+<!-- matrix; add_diag; (matrix m, row_vector d); -->
+\index{{\tt \bfseries add_diag }!{\tt (matrix m, row_vector d): matrix}|hyperpage}
+
+`matrix` **`add_diag`**`(matrix m, row_vector d)`<br>\newline
+Add row_vector `d` to the diagonal of matrix `m`.
+
+<!-- matrix; add_diag; (matrix m, vector d); -->
+\index{{\tt \bfseries add_diag }!{\tt (matrix m, vector d): matrix}|hyperpage}
+
+`matrix` **`add_diag`**`(matrix m, vector d)`<br>\newline
+Add vector `d` to the diagonal of matrix `m`.
+
+<!-- matrix; add_diag; (matrix m, real d); -->
+\index{{\tt \bfseries add_diag }!{\tt (matrix m, real d): matrix}|hyperpage}
+
+`matrix` **`add_diag`**`(matrix m, real d)`<br>\newline
+Add scalar `d` to every diagonal element of matrix `m`.
+
 <!-- vector; diagonal; (matrix x); -->
 \index{{\tt \bfseries diagonal }!{\tt (matrix x): vector}|hyperpage}