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IRIX 6.2 Development Libraries
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SGI IRIX 6.2 Development Libraries.iso
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DPTSL.z
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DPTSL
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1996-03-14
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1KB
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67 lines
DDDDPPPPTTTTSSSSLLLL((((3333FFFF)))) DDDDPPPPTTTTSSSSLLLL((((3333FFFF))))
NNNNAAAAMMMMEEEE
DPTSL - DPTSL, given a positive definite symmetric tridiagonal matrix
and a right hand side, will find the solution.
SSSSYYYYNNNNOOOOPPPPSSSSYYYYSSSS
SUBROUTINE DPTSL(N,D,E,B)
DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
On Entry
NNNN INTEGER
is the order of the tridiagonal matrix.
DDDD DOUBLE PRECISION(N)
is the diagonal of the tridiagonal matrix.
On output D is destroyed.
EEEE DOUBLE PRECISION(N)
is the offdiagonal of the tridiagonal matrix.
E(1) through E(N-1) should contain the
offdiagonal.
BBBB DOUBLE PRECISION(N)
is the right hand side vector. On Return
BBBB contains the solution. LINPACK. This version dated 08/14/78 . Jack
Dongarra, Argonne National Laboratory. No externals Fortran MOD
PPPPaaaaggggeeee 1111