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---
:name: dlaset
:md5sum: c2f6317581bca79e8eb4cd9e8db8f3c7
:category: :subroutine
:arguments:
- uplo:
:type: char
:intent: input
- m:
:type: integer
:intent: input
- n:
:type: integer
:intent: input
- alpha:
:type: doublereal
:intent: input
- beta:
:type: doublereal
:intent: input
- a:
:type: doublereal
:intent: input/output
:dims:
- lda
- n
- lda:
:type: integer
:intent: input
:substitutions: {}
:fortran_help: " SUBROUTINE DLASET( UPLO, M, N, ALPHA, BETA, A, LDA )\n\n\
* Purpose\n\
* =======\n\
*\n\
* DLASET initializes an m-by-n matrix A to BETA on the diagonal and\n\
* ALPHA on the offdiagonals.\n\
*\n\n\
* Arguments\n\
* =========\n\
*\n\
* UPLO (input) CHARACTER*1\n\
* Specifies the part of the matrix A to be set.\n\
* = 'U': Upper triangular part is set; the strictly lower\n\
* triangular part of A is not changed.\n\
* = 'L': Lower triangular part is set; the strictly upper\n\
* triangular part of A is not changed.\n\
* Otherwise: All of the matrix A is set.\n\
*\n\
* M (input) INTEGER\n\
* The number of rows of the matrix A. M >= 0.\n\
*\n\
* N (input) INTEGER\n\
* The number of columns of the matrix A. N >= 0.\n\
*\n\
* ALPHA (input) DOUBLE PRECISION\n\
* The constant to which the offdiagonal elements are to be set.\n\
*\n\
* BETA (input) DOUBLE PRECISION\n\
* The constant to which the diagonal elements are to be set.\n\
*\n\
* A (input/output) DOUBLE PRECISION array, dimension (LDA,N)\n\
* On exit, the leading m-by-n submatrix of A is set as follows:\n\
*\n\
* if UPLO = 'U', A(i,j) = ALPHA, 1<=i<=j-1, 1<=j<=n,\n\
* if UPLO = 'L', A(i,j) = ALPHA, j+1<=i<=m, 1<=j<=n,\n\
* otherwise, A(i,j) = ALPHA, 1<=i<=m, 1<=j<=n, i.ne.j,\n\
*\n\
* and, for all UPLO, A(i,i) = BETA, 1<=i<=min(m,n).\n\
*\n\
* LDA (input) INTEGER\n\
* The leading dimension of the array A. LDA >= max(1,M).\n\
*\n\n\
* =====================================================================\n\
*\n\
* .. Local Scalars ..\n INTEGER I, J\n\
* ..\n\
* .. External Functions ..\n LOGICAL LSAME\n EXTERNAL LSAME\n\
* ..\n\
* .. Intrinsic Functions ..\n INTRINSIC MIN\n\
* ..\n"
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