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- ____CCCCHHHH((((3333FFFF)))) ____CCCCHHHH((((3333FFFF))))
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- NNNNAAAAMMMMEEEE
- CH, SCH - 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 COMPLEX
- HERMITIAN matrix.
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- SSSSYYYYNNNNOOOOPPPPSSSSYYYYSSSS
- ssssuuuubbbbrrrroooouuuuttttiiiinnnneeee cccchhhh((((nnnnmmmm,,,,nnnn,,,,aaaarrrr,,,,aaaaiiii,,,,wwww,,,,mmmmaaaattttzzzz,,,,zzzzrrrr,,,,zzzziiii,,,,ffffvvvv1111,,,,ffffvvvv2222,,,,ffffmmmm1111,,,,iiiieeeerrrrrrrr))))
- iiiinnnntttteeeeggggeeeerrrr nnnnmmmm,,,, nnnn,,,, mmmmaaaattttzzzz,,,, iiiieeeerrrrrrrr
- ddddoooouuuubbbblllleeee pppprrrreeeecccciiiissssiiiioooonnnn aaaarrrr((((nnnnmmmm,,,,nnnn)))),,,, aaaaiiii((((nnnnmmmm,,,,nnnn)))),,,, wwww((((nnnn))))
- ddddoooouuuubbbblllleeee pppprrrreeeecccciiiissssiiiioooonnnn zzzzrrrr((((nnnnmmmm,,,,nnnn)))),,,, zzzziiii((((nnnnmmmm,,,,nnnn)))),,,, ffffvvvv1111((((nnnn)))),,,, ffffvvvv2222((((nnnn)))),,,, ffffmmmm1111((((2222,,,,nnnn))))
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- ssssuuuubbbbrrrroooouuuuttttiiiinnnneeee sssscccchhhh((((nnnnmmmm,,,,nnnn,,,,aaaarrrr,,,,aaaaiiii,,,,wwww,,,,mmmmaaaattttzzzz,,,,zzzzrrrr,,,,zzzziiii,,,,ffffvvvv1111,,,,ffffvvvv2222,,,,ffffmmmm1111,,,,iiiieeeerrrrrrrr))))
- iiiinnnntttteeeeggggeeeerrrr nnnnmmmm,,,, nnnn,,,, mmmmaaaattttzzzz,,,, iiiieeeerrrrrrrr
- rrrreeeeaaaallll aaaarrrr((((nnnnmmmm,,,,nnnn)))),,,, aaaaiiii((((nnnnmmmm,,,,nnnn)))),,,, wwww((((nnnn))))
- rrrreeeeaaaallll zzzzrrrr((((nnnnmmmm,,,,nnnn)))),,,, zzzziiii((((nnnnmmmm,,,,nnnn)))),,,, ffffvvvv1111((((nnnn)))),,,, ffffvvvv2222((((nnnn)))),,,, ffffmmmm1111((((2222,,,,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=(AR,AI).
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- AAAARRRR and AI contain the real and imaginary parts, respectively, of the
- complex hermitian 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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- WWWW contains the eigenvalues in ascending order.
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- ZZZZRRRR and ZI contain the real and imaginary parts, respectively, of the
- eigenvectors if MATZ is not zero.
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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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- FFFFVVVV1111 , FV2, and FM1 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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