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- ____RRRRGGGG((((3333FFFF)))) ____RRRRGGGG((((3333FFFF))))
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- NNNNAAAAMMMMEEEE
- RG, SRG - EISPACK routine. This subroutine calls the recommended
- sequence of subroutines from the eigensystem subroutine package (EISPACK)
- To find the eigenvalues and eigenvectors (if desired) of a REAL GENERAL
- matrix.
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- SSSSYYYYNNNNOOOOPPPPSSSSYYYYSSSS
- ssssuuuubbbbrrrroooouuuuttttiiiinnnneeee rrrrgggg((((nnnnmmmm,,,, nnnn,,,, aaaa,,,, wwwwrrrr,,,, wwwwiiii,,,, mmmmaaaattttzzzz,,,, zzzz,,,, iiiivvvv1111,,,, ffffvvvv1111,,,, iiiieeeerrrrrrrr))))
- iiiinnnntttteeeeggggeeeerrrr nnnnmmmm,,,, nnnn,,,, mmmmaaaattttzzzz,,,, iiiieeeerrrrrrrr
- ddddoooouuuubbbblllleeee pppprrrreeeecccciiiissssiiiioooonnnn aaaa((((nnnnmmmm,,,,nnnn)))),,,, wwwwrrrr((((nnnn)))),,,, wwwwiiii((((nnnn)))),,,, zzzz((((nnnnmmmm,,,,nnnn)))),,,, ffffvvvv1111((((nnnn))))
- iiiinnnntttteeeeggggeeeerrrr iiiivvvv1111((((nnnn))))
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- ssssuuuubbbbrrrroooouuuuttttiiiinnnneeee ssssrrrrgggg((((nnnnmmmm,,,, nnnn,,,, aaaa,,,, wwwwrrrr,,,, wwwwiiii,,,, mmmmaaaattttzzzz,,,, zzzz,,,, iiiivvvv1111,,,, ffffvvvv1111,,,, iiiieeeerrrrrrrr))))
- iiiinnnntttteeeeggggeeeerrrr nnnnmmmm,,,, nnnn,,,, mmmmaaaattttzzzz,,,, iiiieeeerrrrrrrr
- rrrreeeeaaaallll aaaa((((nnnnmmmm,,,,nnnn)))),,,, wwwwrrrr((((nnnn)))),,,, wwwwiiii((((nnnn)))),,,, zzzz((((nnnnmmmm,,,,nnnn)))),,,, ffffvvvv1111((((nnnn))))
- iiiinnnntttteeeeggggeeeerrrr iiiivvvv1111((((nnnn))))
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- DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
- On Input
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- NNNNMMMM must be set to the row dimension of the two-dimensional array
- parameters as declared in the calling program dimension statement.
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- NNNN is the order of the matrix A.
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- AAAA contains the real general matrix.
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- MMMMAAAATTTTZZZZ is an integer variable set equal to zero if only eigenvalues are
- desired. Otherwise it is set to any non-zero integer for both
- eigenvalues and eigenvectors. On Output
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- WWWWRRRR and WI contain the real and imaginary parts, respectively, of the
- eigenvalues. Complex conjugate pairs of eigenvalues appear consecutively
- with the eigenvalue having the positive imaginary part first.
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- ZZZZ contains the real and imaginary parts of the eigenvectors if MATZ is
- not zero. If the J-th eigenvalue is real, the J-th column of Z
- contains its eigenvector. If the J-TH eigenvalue is complex with
- positive imaginary part, the J-th and (J+1)-th columns of Z contain the
- real and imaginary parts of its eigenvector. The conjugate of this
- vector is the eigenvector for the conjugate eigenvalue.
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- IIIIEEEERRRRRRRR is an integer output variable set equal to an error completion code
- described in section 2B of the documentation. The normal completion code
- is zero.
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- IIIIVVVV1111 and FV1 are temporary storage arrays. Questions and comments should
- be directed to B. S. Garbow, APPLIED MATHEMATICS DIVISION, ARGONNE
- NATIONAL LABORATORY
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- PPPPaaaaggggeeee 1111
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