Advanced Analysis Library Only
AnalysisLibErrType Hess (void *inputMatrix, int matrixSize, void *hessenbergMatrix, void *orthogonalMatrix);
Performs a Hessenberg decomposition of a real matrix A such that A = QHQH, where Q is the orthogonal matrix, H is the Hessenberg matrix, and QH is the transpose of Q.
Input | ||
Name | Type | Description |
inputMatrix | numeric array | The input matrix A. |
matrixSize | integer | The order of inputMatrix. |
Output | ||
Name | Type | Description |
hessenbergMatrix | numeric array | The Hessenberg matrix. In place operation is supported. That is, you can call the function with hessenbergMatrix = NULL or hessenbergMatrix = inputMatrix so that the resulting Hessenberg matrix overwrites inputMatrix directly. |
orthogonalMatrix | numeric array | The orthogonal matrix Q. |
Name | Type | Description |
status | AnalysisLibErrType | A value that specifies the type of error that occurred. Refer to analysis.h for definitions of these constants. |