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---
:name: claqsy
:md5sum: cda09f78eb86852e56f73b7cca3221cf
:category: :subroutine
:arguments:
- uplo:
:type: char
:intent: input
- n:
:type: integer
:intent: input
- a:
:type: complex
:intent: input/output
:dims:
- lda
- n
- lda:
:type: integer
:intent: input
- s:
:type: real
:intent: input
:dims:
- n
- scond:
:type: real
:intent: input
- amax:
:type: real
:intent: input
- equed:
:type: char
:intent: output
:substitutions: {}
:fortran_help: " SUBROUTINE CLAQSY( UPLO, N, A, LDA, S, SCOND, AMAX, EQUED )\n\n\
* Purpose\n\
* =======\n\
*\n\
* CLAQSY equilibrates a symmetric matrix A using the scaling factors\n\
* in the vector S.\n\
*\n\n\
* Arguments\n\
* =========\n\
*\n\
* UPLO (input) CHARACTER*1\n\
* Specifies whether the upper or lower triangular part of the\n\
* symmetric matrix A is stored.\n\
* = 'U': Upper triangular\n\
* = 'L': Lower triangular\n\
*\n\
* N (input) INTEGER\n\
* The order of the matrix A. N >= 0.\n\
*\n\
* A (input/output) COMPLEX array, dimension (LDA,N)\n\
* On entry, the symmetric matrix A. If UPLO = 'U', the leading\n\
* n by n upper triangular part of A contains the upper\n\
* triangular part of the matrix A, and the strictly lower\n\
* triangular part of A is not referenced. If UPLO = 'L', the\n\
* leading n by n lower triangular part of A contains the lower\n\
* triangular part of the matrix A, and the strictly upper\n\
* triangular part of A is not referenced.\n\
*\n\
* On exit, if EQUED = 'Y', the equilibrated matrix:\n\
* diag(S) * A * diag(S).\n\
*\n\
* LDA (input) INTEGER\n\
* The leading dimension of the array A. LDA >= max(N,1).\n\
*\n\
* S (input) REAL array, dimension (N)\n\
* The scale factors for A.\n\
*\n\
* SCOND (input) REAL\n\
* Ratio of the smallest S(i) to the largest S(i).\n\
*\n\
* AMAX (input) REAL\n\
* Absolute value of largest matrix entry.\n\
*\n\
* EQUED (output) CHARACTER*1\n\
* Specifies whether or not equilibration was done.\n\
* = 'N': No equilibration.\n\
* = 'Y': Equilibration was done, i.e., A has been replaced by\n\
* diag(S) * A * diag(S).\n\
*\n\
* Internal Parameters\n\
* ===================\n\
*\n\
* THRESH is a threshold value used to decide if scaling should be done\n\
* based on the ratio of the scaling factors. If SCOND < THRESH,\n\
* scaling is done.\n\
*\n\
* LARGE and SMALL are threshold values used to decide if scaling should\n\
* be done based on the absolute size of the largest matrix element.\n\
* If AMAX > LARGE or AMAX < SMALL, scaling is done.\n\
*\n\n\
* =====================================================================\n\
*\n"
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