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IRIX 6.2 Development Libraries
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HTRIB3.z
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HTRIB3
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Text File
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1996-03-14
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3KB
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67 lines
____HHHHTTTTRRRRIIIIBBBB3333((((3333FFFF)))) ____HHHHTTTTRRRRIIIIBBBB3333((((3333FFFF))))
NNNNAAAAMMMMEEEE
HTRIB3, SHTRIB3 - EISPACK routine. This subroutine forms the
eigenvectors of a COMPLEX HERMITIAN matrix by back transforming those of
the corresponding real symmetric tridiagonal matrix determined by
HTRID3.
SSSSYYYYNNNNOOOOPPPPSSSSYYYYSSSS
ssssuuuubbbbrrrroooouuuuttttiiiinnnneeee hhhhttttrrrriiiibbbb3333((((nnnnmmmm,,,, nnnn,,,, aaaa,,,, ttttaaaauuuu,,,, mmmm,,,, zzzzrrrr,,,, zzzziiii))))
iiiinnnntttteeeeggggeeeerrrr nnnnmmmm,,,, nnnn,,,, mmmm
ddddoooouuuubbbblllleeee pppprrrreeeecccciiiissssiiiioooonnnn aaaa((((nnnnmmmm,,,,nnnn)))),,,, ttttaaaauuuu((((2222,,,,nnnn)))),,,, zzzzrrrr((((nnnnmmmm,,,,mmmm)))),,,, zzzziiii((((nnnnmmmm,,,,mmmm))))
ssssuuuubbbbrrrroooouuuuttttiiiinnnneeee sssshhhhttttrrrriiiibbbb3333((((nnnnmmmm,,,, nnnn,,,, aaaa,,,, ttttaaaauuuu,,,, mmmm,,,, zzzzrrrr,,,, zzzziiii))))
iiiinnnntttteeeeggggeeeerrrr nnnnmmmm,,,, nnnn,,,, mmmm
rrrreeeeaaaallll aaaa((((nnnnmmmm,,,,nnnn)))),,,, ttttaaaauuuu((((2222,,,,nnnn)))),,,, zzzzrrrr((((nnnnmmmm,,,,mmmm)))),,,, zzzziiii((((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.
AAAA contains information about the unitary transformations used in the
reduction by HTRID3.
TTTTAAAAUUUU contains further information about the transformations.
MMMM IS the number of eigenvectors to be back transformed.
ZZZZRRRR contains the eigenvectors to be back transformed in its first M
columns. On OUTPUT
ZZZZRRRR and ZI contain the real and imaginary parts, respectively, of the
transformed eigenvectors in their first M columns. NOTE that the last
component of each returned vector is real and that vector Euclidean norms
are preserved. Questions and comments should be directed to B. S.
Garbow, APPLIED MATHEMATICS DIVISION, ARGONNE NATIONAL LABORATORY
PPPPaaaaggggeeee 1111