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IRIX 6.2 Development Libraries
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DPBDI.z
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DPBDI
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1996-03-14
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1KB
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67 lines
DDDDPPPPBBBBDDDDIIII((((3333FFFF)))) DDDDPPPPBBBBDDDDIIII((((3333FFFF))))
NNNNAAAAMMMMEEEE
DPBDI - DPBDI computes the determinant of a double precision symmetric
positive definite band matrix using the factors computed by DPBCO or
DPBFA. If the inverse is needed, use DPBSL N times.
SSSSYYYYNNNNOOOOPPPPSSSSYYYYSSSS
SUBROUTINE DPBDI(ABD,LDA,N,M,DET)
DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
On Entry
AAAABBBBDDDD DOUBLE PRECISION(LDA, N)
the output from DPBCO or DPBFA.
LLLLDDDDAAAA INTEGER
the leading dimension of the array ABD .
NNNN INTEGER
the order of the matrix A .
MMMM INTEGER
the number of diagonals above the main diagonal. On Return
DDDDEEEETTTT DOUBLE PRECISION(2)
determinant of original matrix in the form
DETERMINANT = DET(1) * 10.0**DET(2)
with 1.0 .LE. DET(1) .LT. 10.0
or DET(1) .EQ. 0.0 . LINPACK. This version dated 08/14/78 . Cleve
Moler, University of New Mexico, Argonne National Lab.
PPPPaaaaggggeeee 1111