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- DDDDLLLLAAAASSSSEEEETTTT((((3333SSSS)))) DDDDLLLLAAAASSSSEEEETTTT((((3333SSSS))))
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- NNNNAAAAMMMMEEEE
- DLASET - initialize an m-by-n matrix A to BETA on the diagonal and ALPHA
- on the offdiagonals
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- SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
- SUBROUTINE DLASET( UPLO, M, N, ALPHA, BETA, A, LDA )
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- CHARACTER UPLO
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- INTEGER LDA, M, N
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- DOUBLE PRECISION ALPHA, BETA
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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
- DLASET initializes an m-by-n matrix A to BETA on the diagonal and ALPHA
- on the offdiagonals.
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- AAAARRRRGGGGUUUUMMMMEEEENNNNTTTTSSSS
- UPLO (input) CHARACTER*1
- Specifies the part of the matrix A to be set. = 'U': Upper
- triangular part is set; the strictly lower triangular part of A
- is not changed. = 'L': Lower triangular part is set; the
- strictly upper triangular part of A is not changed. Otherwise:
- All of the matrix A is set.
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- M (input) INTEGER
- The number of rows of the matrix A. M >= 0.
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- N (input) INTEGER
- The number of columns of the matrix A. N >= 0.
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- ALPHA (input) DOUBLE PRECISION
- The constant to which the offdiagonal elements are to be set.
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- BETA (input) DOUBLE PRECISION
- The constant to which the diagonal elements are to be set.
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- PPPPaaaaggggeeee 1111
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- A (input/output) DOUBLE PRECISION array, dimension (LDA,N)
- On exit, the leading m-by-n submatrix of A is set as follows:
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- if UPLO = 'U', A(i,j) = ALPHA, 1<=i<=j-1, 1<=j<=n, if UPLO = 'L',
- A(i,j) = ALPHA, j+1<=i<=m, 1<=j<=n, otherwise, A(i,j) =
- ALPHA, 1<=i<=m, 1<=j<=n, i.ne.j,
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- and, for all UPLO, A(i,i) = BETA, 1<=i<=min(m,n).
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- LDA (input) INTEGER
- The leading dimension of the array A. LDA >= max(1,M).
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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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