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- DLASWP - perform a series of row interchanges on the matrix A
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- SUBROUTINE DLASWP( N, A, LDA, K1, K2, IPIV, INCX )
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- INTEGER INCX, K1, K2, LDA, N
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- INTEGER IPIV( * )
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- DOUBLE PRECISION A( LDA, * )
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- IIIIMMMMPPPPLLLLEEEEMMMMEEEENNNNTTTTAAAATTTTIIIIOOOONNNN
- These routines are part of the SCSL Scientific Library and can be loaded
- using either the -lscs or the -lscs_mp option. The -lscs_mp option
- directs the linker to use the multi-processor version of the library.
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- When linking to SCSL with -lscs or -lscs_mp, the default integer size is
- 4 bytes (32 bits). Another version of SCSL is available in which integers
- are 8 bytes (64 bits). This version allows the user access to larger
- memory sizes and helps when porting legacy Cray codes. It can be loaded
- by using the -lscs_i8 option or the -lscs_i8_mp option. A program may use
- only one of the two versions; 4-byte integer and 8-byte integer library
- calls cannot be mixed.
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- PPPPUUUURRRRPPPPOOOOSSSSEEEE
- DLASWP performs a series of row interchanges on the matrix A. One row
- interchange is initiated for each of rows K1 through K2 of A.
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- N (input) INTEGER
- The number of columns of the matrix A.
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- A (input/output) DOUBLE PRECISION array, dimension (LDA,N)
- On entry, the matrix of column dimension N to which the row
- interchanges will be applied. On exit, the permuted matrix.
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- LDA (input) INTEGER
- The leading dimension of the array A.
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- K1 (input) INTEGER
- The first element of IPIV for which a row interchange will be
- done.
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- K2 (input) INTEGER
- The last element of IPIV for which a row interchange will be
- done.
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- IPIV (input) INTEGER array, dimension (M*abs(INCX))
- The vector of pivot indices. Only the elements in positions K1
- through K2 of IPIV are accessed. IPIV(K) = L implies rows K and
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- DDDDLLLLAAAASSSSWWWWPPPP((((3333SSSS)))) DDDDLLLLAAAASSSSWWWWPPPP((((3333SSSS))))
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- L are to be interchanged.
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- INCX (input) INTEGER
- The increment between successive values of IPIV. If IPIV is
- negative, the pivots are applied in reverse order.
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- FFFFUUUURRRRTTTTHHHHEEEERRRR DDDDEEEETTTTAAAAIIIILLLLSSSS
- Modified by
- R. C. Whaley, Computer Science Dept., Univ. of Tenn., Knoxville, USA
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- SSSSEEEEEEEE AAAALLLLSSSSOOOO
- INTRO_LAPACK(3S), INTRO_SCSL(3S)
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- This man page is available only online.
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- PPPPaaaaggggeeee 2222
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