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---
:name: ssyconv
:md5sum: 119fb0834f75cb8910761daec667bf8a
:category: :subroutine
:arguments:
- uplo:
:type: char
:intent: input
- way:
:type: char
:intent: input
- n:
:type: integer
:intent: input
- a:
:type: real
:intent: input
:dims:
- lda
- n
- lda:
:type: integer
:intent: input
- ipiv:
:type: integer
:intent: input
:dims:
- n
- work:
:type: real
:intent: workspace
:dims:
- MAX(1,n)
- info:
:type: integer
:intent: output
:substitutions: {}
:fortran_help: " SUBROUTINE SSYCONV( UPLO, WAY, N, A, LDA, IPIV, WORK, INFO )\n\n\
* Purpose\n\
* =======\n\
*\n\
* SSYCONV convert A given by TRF into L and D and vice-versa.\n\
* Get Non-diag elements of D (returned in workspace) and \n\
* apply or reverse permutation done in TRF.\n\
*\n\n\
* Arguments\n\
* =========\n\
*\n\
* UPLO (input) CHARACTER*1\n\
* Specifies whether the details of the factorization are stored\n\
* as an upper or lower triangular matrix.\n\
* = 'U': Upper triangular, form is A = U*D*U**T;\n\
* = 'L': Lower triangular, form is A = L*D*L**T.\n\
* \n\
* WAY (input) CHARACTER*1\n\
* = 'C': Convert \n\
* = 'R': Revert\n\
*\n\
* N (input) INTEGER\n\
* The order of the matrix A. N >= 0.\n\
*\n\
* A (input) REAL array, dimension (LDA,N)\n\
* The block diagonal matrix D and the multipliers used to\n\
* obtain the factor U or L as computed by SSYTRF.\n\
*\n\
* LDA (input) INTEGER\n\
* The leading dimension of the array A. LDA >= max(1,N).\n\
*\n\
* IPIV (input) INTEGER array, dimension (N)\n\
* Details of the interchanges and the block structure of D\n\
* as determined by SSYTRF.\n\
*\n\
* WORK (workspace) REAL array, dimension (N)\n\
*\n\
* LWORK (input) INTEGER\n\
* The length of WORK. LWORK >=1. \n\
* LWORK = N\n\
*\n\
* If LWORK = -1, then a workspace query is assumed; the routine\n\
* only calculates the optimal size of the WORK array, returns\n\
* this value as the first entry of the WORK array, and no error\n\
* message related to LWORK is issued by XERBLA.\n\
*\n\
* INFO (output) INTEGER\n\
* = 0: successful exit\n\
* < 0: if INFO = -i, the i-th argument had an illegal value\n\
*\n\n\
* =====================================================================\n\
*\n"
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