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IRIX 6.2 Development Libraries
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REBAK.z
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REBAK
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Text File
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1996-03-14
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3KB
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67 lines
____RRRREEEEBBBBAAAAKKKK((((3333FFFF)))) ____RRRREEEEBBBBAAAAKKKK((((3333FFFF))))
NNNNAAAAMMMMEEEE
REBAK, SREBAK - EISPACK routine. This subroutine forms the
eigenvectors of a generalized SYMMETRIC eigensystem by back transforming
those of the derived symmetric matrix determined by REDUC.
SSSSYYYYNNNNOOOOPPPPSSSSYYYYSSSS
ssssuuuubbbbrrrroooouuuuttttiiiinnnneeee rrrreeeebbbbaaaakkkk((((nnnnmmmm,,,, nnnn,,,, bbbb,,,, ddddllll,,,, mmmm,,,, zzzz))))
iiiinnnntttteeeeggggeeeerrrr nnnnmmmm,,,, nnnn,,,, mmmm
ddddoooouuuubbbblllleeee pppprrrreeeecccciiiissssiiiioooonnnn bbbb((((nnnnmmmm,,,,nnnn)))),,,, ddddllll((((nnnn)))),,,, zzzz((((nnnnmmmm,,,,mmmm))))
ssssuuuubbbbrrrroooouuuuttttiiiinnnneeee ssssrrrreeeebbbbaaaakkkk((((nnnnmmmm,,,, nnnn,,,, bbbb,,,, ddddllll,,,, mmmm,,,, zzzz))))
iiiinnnntttteeeeggggeeeerrrr nnnnmmmm,,,, nnnn,,,, mmmm
rrrreeeeaaaallll bbbb((((nnnnmmmm,,,,nnnn)))),,,, ddddllll((((nnnn)))),,,, zzzz((((nnnnmmmm,,,,mmmm))))
DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
On Input
NNNNMMMM must be set to the row dimension of two-dimensional array parameters
as declared in the calling program dimension statement.
NNNN is the order of the matrix system.
BBBB contains information about the similarity transformation (Cholesky
decomposition) used in the reduction by REDUC in its strict lower
triangle.
DDDDLLLL contains further information about the transformation.
MMMM is the number of eigenvectors to be back transformed.
ZZZZ contains the eigenvectors to be back transformed in its first M
columns. On Output
ZZZZ contains the transformed eigenvectors in its first M columns.
Questions and comments should be directed to B. S. Garbow, APPLIED
MATHEMATICS DIVISION, ARGONNE NATIONAL LABORATORY
PPPPaaaaggggeeee 1111