Create a upper triangular matrix from input array.  
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Create a upper triangular matrix from input array. 
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§ af_upper()
- Parameters
- 
  
    | [out] | out | is the upper triangle matrix |  | [in] | in | is the input matrix |  | [in] | is_unit_diag | is a boolean parameter specifying if the diagonal elements should be 1 |  
 
 
 
§ upper()
- Parameters
- 
  
    | [in] | in | is the input matrix |  | [in] | is_unit_diag | is a boolean parameter specifying if the diagonal elements should be 1 |  
 
- Returns
- the upper triangle matrix 
- Examples: 
- lin_algebra/lu.cpp.