api.h

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/**
 *
 * @file pastix/api.h
 *
 * PaStiX API enums parameters.
 *
 * This file is generated automatically. If you want to modify it, modify
 * ${PASTIX_HOME}/tools/gen_param/pastix_[iparm/dparm/enums].py and run
 * ${PASTIX_HOME}/tools/gen_param/gen_parm_files.py ${PASTIX_HOME}.
 *
 * @copyright 2004-2023 Bordeaux INP, CNRS (LaBRI UMR 5800), Inria,
 *                      Univ. Bordeaux. All rights reserved.
 *
 * @version 6.3.0
 * @author Mathieu Faverge
 * @author Pierre Ramet
 * @author Xavier Lacoste
 * @author Esragul Korkmaz
 * @author Gregoire Pichon
 * @author Tony Delarue
 * @date 2023-08-04
 *
 * @addtogroup pastix_api
 * @{
 *
 **/
#ifndef _pastix_api_h_
#define _pastix_api_h_
 
BEGIN_C_DECLS
 
/**
 * @brief Integer parameters
 */
typedef enum pastix_iparm_e {
    IPARM_VERBOSE,                        /**< Verbose mode (@see pastix_verbose_t)                           Default: PastixVerboseNo           IN  */
    IPARM_IO_STRATEGY,                    /**< IO strategy  (@see pastix_io_t)                                Default: PastixIONo                IN  */
 
    /* Stats */
    IPARM_NNZEROS,                        /**< Number of nonzero entries in the factorized matrix             Default: -                         OUT */
    IPARM_NNZEROS_BLOCK_LOCAL,            /**< Number of nonzero entries in the local block factorized matrix Default: -                         OUT */
    IPARM_ALLOCATED_TERMS,                /**< Maximum memory allocated for matrix terms                      Default: -                         OUT */
    IPARM_PRODUCE_STATS,                  /**< Compute some statistiques (such as precision error)            Default: 0                         IN  */
    IPARM_TRACE,                          /**< Bitmask of the steps to trace                                  Default: PastixTraceNumfact        IN  */
 
    /* Scaling */
    IPARM_MC64,                           /**< MC64 operation                                                 Default: 0                         IN  */
 
    /* Ordering */
    IPARM_ORDERING,                       /**< Choose ordering                                                Default: PastixOrderScotch         IN  */
    IPARM_ORDERING_DEFAULT,               /**< Use default ordering parameters with Scotch or Metis           Default: 1                         IN  */
 
    /* Subset for Scotch */
    IPARM_SCOTCH_MT,                      /**< Ordering multi-threaded  (see Scotch Manual)                   Default: 1 (if available)          IN  */
    IPARM_SCOTCH_SWITCH_LEVEL,            /**< Ordering switch level    (see Scotch Manual)                   Default: 120                       IN  */
    IPARM_SCOTCH_CMIN,                    /**< Ordering cmin parameter  (see Scotch Manual)                   Default: 0                         IN  */
    IPARM_SCOTCH_CMAX,                    /**< Ordering cmax parameter  (see Scotch Manual)                   Default: 100000                    IN  */
    IPARM_SCOTCH_FRAT,                    /**< Ordering frat parameter  (see Scotch Manual)                   Default: 8                         IN  */
 
    /* Subset for Metis */
    IPARM_METIS_CTYPE,                    /**< Metis parameters (see Metis Manual)                            Default: METIS_CTYPE_SHEM          IN  */
    IPARM_METIS_RTYPE,                    /**< Metis parameters (see Metis Manual)                            Default: METIS_RTYPE_SEP1SIDED     IN  */
    IPARM_METIS_NO2HOP,                   /**< Metis parameters (see Metis Manual)                            Default: 0                         IN  */
    IPARM_METIS_NSEPS,                    /**< Metis parameters (see Metis Manual)                            Default: 1                         IN  */
    IPARM_METIS_NITER,                    /**< Metis parameters (see Metis Manual)                            Default: 10                        IN  */
    IPARM_METIS_UFACTOR,                  /**< Metis parameters (see Metis Manual)                            Default: 200                       IN  */
    IPARM_METIS_COMPRESS,                 /**< Metis parameters (see Metis Manual)                            Default: 1                         IN  */
    IPARM_METIS_CCORDER,                  /**< Metis parameters (see Metis Manual)                            Default: 0                         IN  */
    IPARM_METIS_PFACTOR,                  /**< Metis parameters (see Metis Manual)                            Default: 0                         IN  */
    IPARM_METIS_SEED,                     /**< Metis parameters (see Metis Manual)                            Default: 3452                      IN  */
    IPARM_METIS_DBGLVL,                   /**< Metis parameters (see Metis Manual)                            Default: 0                         IN  */
 
    /* Symbolic Factorization */
    IPARM_AMALGAMATION_LVLBLAS,           /**< Amalgamation level                                             Default: 5                         IN  */
    IPARM_AMALGAMATION_LVLCBLK,           /**< Amalgamation level                                             Default: 5                         IN  */
 
    /* Reordering */
    IPARM_REORDERING_SPLIT,               /**< Reordering split level                                         Default: 0                         IN  */
    IPARM_REORDERING_STOP,                /**< Reordering stop criterion                                      Default: PASTIX_INT_MAX            IN  */
    IPARM_SPLITTING_STRATEGY,             /**< Strategy used to split supernodes                              Default: PastixSplitKway           IN  */
    IPARM_SPLITTING_LEVELS_PROJECTIONS,   /**< Levels of projections                                          Default: 0                         IN  */
    IPARM_SPLITTING_LEVELS_KWAY,          /**< Levels of kway                                                 Default: PASTIX_INT_MAX            IN  */
    IPARM_SPLITTING_PROJECTIONS_DEPTH,    /**< Number of level used for projections                           Default: 3                         IN  */
    IPARM_SPLITTING_PROJECTIONS_DISTANCE, /**< Distance used for projections                                  Default: 3                         IN  */
    IPARM_SPLITTING_PROJECTIONS_WIDTH,    /**< Width used for projections                                     Default: 1                         IN  */
 
    /* Analyze */
    IPARM_MIN_BLOCKSIZE,                  /**< Minimum block size                                             Default: 160                       IN  */
    IPARM_MAX_BLOCKSIZE,                  /**< Maximum block size                                             Default: 320                       IN  */
    IPARM_TASKS2D_LEVEL,                  /**< 2D Distribution level (-1 for autolevel, 0 for 1D)             Default: -1                        IN  */
    IPARM_TASKS2D_WIDTH,                  /**< Minimal width for 2D tasks with autolevel                      Default: IPARM_MIN_BLOCKSIZE       IN  */
    IPARM_ALLCAND,                        /**< Allow all threads to be candidate in the proportional mapping  Default: 0                         IN  */
 
    /* Incomplete */
    IPARM_INCOMPLETE,                     /**< Incomplete factorization                                       Default: 0                         IN  */
    IPARM_LEVEL_OF_FILL,                  /**< Level of fill for incomplete factorization                     Default: 0                         IN  */
 
    /* Factorization */
    IPARM_FACTORIZATION,                  /**< Factorization mode                                             Default: PastixFactLU              IN  */
    IPARM_FACTO_LOOK_SIDE,                /**< Factorization looking variant algorithm                        Default: PastixFactRightLooking    IN  */
    IPARM_STATIC_PIVOTING,                /**< Static pivoting                                                Default: -                         OUT */
    IPARM_FREE_CSCUSER,                   /**< Free user CSC                                                  Default: 0                         IN  */
    IPARM_SCHUR_FACT_MODE,                /**< Specify if the Schur is factorized (@see pastix_fact_mode_t)   Default: PastixFactModeLocal       IN  */
 
    /* Solve */
    IPARM_TRANSPOSE_SOLVE,                /**< Solve A^t x = b (to avoid CSR/CSC conversion for instance)     Default: PastixNoTrans             IN  */
    IPARM_SCHUR_SOLV_MODE,                /**< Specify the solve parts to apply (@see pastix_solv_mode_t)     Default: PastixSolvModeLocal       IN  */
    IPARM_APPLYPERM_WS,                   /**< Enable/disable extra workspace for a thread-safe swap          Default: 1                         IN  */
 
    /* Refinement */
    IPARM_REFINEMENT,                     /**< Refinement mode                                                Default: PastixRefineGMRES         IN  */
    IPARM_NBITER,                         /**< Number of iterations performed in refinement                   Default: -                         OUT */
    IPARM_ITERMAX,                        /**< Maximum iteration number for refinement                        Default: 250                       IN  */
    IPARM_GMRES_IM,                       /**< GMRES restart parameter                                        Default: 25                        IN  */
 
    /* Context */
    IPARM_SCHEDULER,                      /**< Scheduler mode                                                 Default: PastixSchedDynamic        IN  */
    IPARM_THREAD_NBR,                     /**< Number of threads per process (-1 for auto detect)             Default: -1                        IN  */
    IPARM_SOCKET_NBR,                     /**< Number of sockets for papi energy measure (default: 0)         Default: 0                         IN  */
    IPARM_AUTOSPLIT_COMM,                 /**< Automaticaly split communicator to have one MPI task by node   Default: 0                         IN  */
 
    /* GPU */
    IPARM_GPU_NBR,                        /**< Number of GPU devices                                          Default: 0                         IN  */
    IPARM_GPU_MEMORY_PERCENTAGE,          /**< Maximum percentage of the GPU memory used by the solver        Default: 95                        IN  */
    IPARM_GPU_MEMORY_BLOCK_SIZE,          /**< Size of GPU memory pages (for PaRSEC runtime)                  Default: 32 * 1024                 IN  */
    IPARM_GLOBAL_ALLOCATION,              /**< Enables/Disables the global allocation of the coeftab matrix   Default: 0                         IN  */
 
    /* Compression */
    IPARM_COMPRESS_MIN_WIDTH,             /**< Minimum width to compress a supernode                          Default: 128                       IN  */
    IPARM_COMPRESS_MIN_HEIGHT,            /**< Minimum height to compress an off-diagonal block               Default: 20                        IN  */
    IPARM_COMPRESS_WHEN,                  /**< When to compress a supernode                                   Default: PastixCompressNever       IN  */
    IPARM_COMPRESS_METHOD,                /**< Compression method (See pastix_compress_method_t)              Default: PastixCompressMethodPQRCP IN  */
    IPARM_COMPRESS_ORTHO,                 /**< Orthogonalization method                                       Default: PastixCompressOrthoCGS    IN  */
    IPARM_COMPRESS_RELTOL,                /**< Enable/Disable relative tolerance                              Default: 0                         IN  */
    IPARM_COMPRESS_PRESELECT,             /**< Enable/Disable compression of preselected blocks               Default: 1                         IN  */
    IPARM_COMPRESS_ILUK,                  /**< Set the ILU(k) level of preselection (-2 for auto-level)       Default: -2                        IN  */
 
    /* mixed-precision parameters */
    IPARM_MIXED,                          /**< Enables/Disables mixed-precision                               Default: 0                         IN  */
    IPARM_FTZ,                            /**< Enables/Disables Flush-To-Zero for denormal numbers            Default: 0                         IN  */
 
    /* MPI modes */
    IPARM_MPI_THREAD_LEVEL,               /**< MPI thread level support                                       Default: PastixMpiNone             OUT */
 
    /* Subset for old interface */
    IPARM_MODIFY_PARAMETER,               /**< Indicate if parameters have been set by user                   Default: 1                         IN  */
    IPARM_START_TASK,                     /**< Indicate the first step to execute                             Default: PastixTaskOrdering        IN  */
    IPARM_END_TASK,                       /**< Indicate the last step to execute                              Default: PastixTaskClean           IN  */
    IPARM_FLOAT,                          /**< Indicate the arithmetics                                       Default: PastixDouble              IN  */
    IPARM_MTX_TYPE,                       /**< Indicate matrix format                                         Default: -1                        IN  */
    IPARM_DOF_NBR,                        /**< Degree of freedom per node                                     Default: 1                         IN  */
 
    IPARM_SIZE
} pastix_iparm_t;
 
/**
 * @brief Float parameters
 */
typedef enum pastix_dparm_e {
    DPARM_FILL_IN,            /**< Maximum memory (-DMEMORY_USAGE)                   Default: -    OUT */
    DPARM_EPSILON_REFINEMENT, /**< Epsilon for refinement                            Default: -1.  IN  */
    DPARM_RELATIVE_ERROR,     /**< Relative backward error                           Default: -    OUT */
    DPARM_EPSILON_MAGN_CTRL,  /**< Epsilon for magnitude control                     Default: 0.   IN  */
    DPARM_ORDER_TIME,         /**< Time for subtask order (wallclock)                Default: -    OUT */
    DPARM_SYMBFACT_TIME,      /**< Time for subtask symbfact (wallclock)             Default: -    OUT */
    DPARM_REORDER_TIME,       /**< Time for subtask reordering (wallclock)           Default: -    OUT */
    DPARM_BLEND_TIME,         /**< Time for subtask blend (wallclock)                Default: -    OUT */
    DPARM_ANALYZE_TIME,       /**< Time for task analyse (wallclock)                 Default: -    OUT */
    DPARM_PRED_FACT_TIME,     /**< Predicted factorization time                      Default: -    OUT */
    DPARM_FACT_TIME,          /**< Time for task Numerical Factorization (wallclock) Default: -    OUT */
    DPARM_FACT_FLOPS,         /**< Factorization GFlops/s                            Default: -    OUT */
    DPARM_FACT_THFLOPS,       /**< Factorization theoretical Flops                   Default: -    OUT */
    DPARM_FACT_RLFLOPS,       /**< Factorization performed Flops                     Default: -    OUT */
    DPARM_FACT_ENERGY,        /**< Energy for task Factorization                     Default: -    OUT */
    DPARM_MEM_FR,             /**< Memory used by the matrix in full-rank format     Default: -    OUT */
    DPARM_MEM_LR,             /**< Memory used by the matrix in low-rank format      Default: -    OUT */
    DPARM_SOLV_TIME,          /**< Time for task Solve (wallclock)                   Default: -    OUT */
    DPARM_SOLV_FLOPS,         /**< Solve GFlops/s                                    Default: -    OUT */
    DPARM_SOLV_THFLOPS,       /**< Solve theoretical Flops                           Default: -    OUT */
    DPARM_SOLV_RLFLOPS,       /**< Solve performed Flops                             Default: -    OUT */
    DPARM_SOLV_ENERGY,        /**< Energy for task Solve                             Default: -    OUT */
    DPARM_REFINE_TIME,        /**< Time for task refinement (wallclock)              Default: -    OUT */
    DPARM_A_NORM,             /**< (||A||_f) norm                                    Default: -    OUT */
    DPARM_COMPRESS_TOLERANCE, /**< Tolerance for low-rank kernels                    Default: 0.01 IN  */
    DPARM_COMPRESS_MIN_RATIO, /**< Min ratio for rank w.r.t. strict rank             Default: 1.0  IN  */
    DPARM_SIZE
} pastix_dparm_t;
 
/**
 * @brief Main steps for the pastix() interface.
 *
 * Those enums are used of the IPARM_START_TASK and IPARM_END_TASK parameters
 * that configure the pastix() call.
 */
typedef enum pastix_task_e {
    PastixTaskInit     = 0, /**< Startup the library          */
    PastixTaskOrdering = 1, /**< Ordering                     */
    PastixTaskSymbfact = 2, /**< Symbolic factorization       */
    PastixTaskAnalyze  = 3, /**< Tasks mapping and scheduling */
    PastixTaskNumfact  = 4, /**< Numerical factorization      */
    PastixTaskSolve    = 5, /**< Numerical solve              */
    PastixTaskRefine   = 6, /**< Numerical refinement         */
    PastixTaskClean    = 7  /**< Clean                        */
} pastix_task_t;
 
/**
 * @brief Steps to trace.
 */
typedef enum pastix_trace_e {
    PastixTraceNumfact = 16,
    PastixTraceSolve   = 32
} pastix_trace_t;
 
/**
 * @brief Verbose modes
 */
typedef enum pastix_verbose_e {
    PastixVerboseNot = 0, /**< Nothing  */
    PastixVerboseNo  = 1, /**< Default  */
    PastixVerboseYes = 2  /**< Extended */
} pastix_verbose_t;
 
/**
 * @brief IO strategy for graph and ordering
 */
typedef enum pastix_io_e {
    PastixIONo        = 0,  /**< No output or input                                                              */
    PastixIOLoad      = 1,  /**< Load ordering and symbol matrix instead of applying symbolic factorization step */
    PastixIOSave      = 2,  /**< Save ordering and symbol matrix after symbolic factorization step               */
    PastixIOLoadGraph = 4,  /**< Load graph  during ordering step                                                */
    PastixIOSaveGraph = 8,  /**< Save graph  during ordering step                                                */
    PastixIOLoadCSC   = 16, /**< Load CSC(d) during ordering step                                                */
    PastixIOSaveCSC   = 32  /**< Save CSC(d) during ordering step                                                */
} pastix_io_t;
 
/**
 * @brief Factorization Schur modes
 *
 * Describe which part of the matrix is factorized or not
 */
typedef enum pastix_fact_mode_e {
    PastixFactModeLocal = 0,
    PastixFactModeSchur = 1,
    PastixFactModeBoth  = 2
} pastix_fact_mode_t;
 
/**
 * @brief Solve Schur modes
 *
 * Describe which part of the solve is applied with the matrix
 *
 * \f[ A = \left( \begin{array}{cc}
 *             L_{11}U_{11} & U_{12} \\
 *             L_{21}       & S_{22} \end{array} \right) \f]
 *
 * For the lower part (and symmetrically for upper part):
 *   -# Solve \f[ L_{11} * x_{11} = b_{11} \f]
 *   -# Apply the update \f[ b_{22} = b_{22} - L_{21} * b_{11} \f]
 *   -# Solve the lower part of \f[ S_{22} * x_{22} = b_{22} \f] if S22 has been previously factorized.
 *
 * PastixSolvModeLocal applies only the step 1.
 * PastixSolvModeInterface applies steps 1 and 2.
 * PastixSolvModeSchur applies all steps.
 */
typedef enum pastix_solv_mode_e {
    PastixSolvModeLocal     = 0,
    PastixSolvModeInterface = 1,
    PastixSolvModeSchur     = 2
} pastix_solv_mode_t;
 
/**
 * @brief Iterative refinement algorithms
 */
typedef enum pastix_refine_e {
    PastixRefineGMRES,    /**< GMRES              */
    PastixRefineCG,       /**< Conjugate Gradient */
    PastixRefineSR,       /**< Simple refinement  */
    PastixRefineBiCGSTAB  /**< BiCGStab           */
} pastix_refine_t;
 
/**
 * @brief Arithmetic types.
 *
 * This describes the different arithmetics that can be stored in a sparse matrix.
 * @remark The values start at 2 for compatibility purpose with PLASMA and
 * DPLASMA libraries, and they match the ones used in spm.
 *
 * @sa spm_coeftype_t
 *
 * @{
 */
 
/**
 * @brief TODO
 */
typedef spm_coeftype_t pastix_coeftype_t;
#ifndef DOXYGEN_SHOULD_SKIP_THIS
#define PastixPattern   SpmPattern
#define PastixFloat     SpmFloat
#define PastixDouble    SpmDouble
#define PastixComplex32 SpmComplex32
#define PastixComplex64 SpmComplex64
#endif /* DOXYGEN_SHOULD_SKIP_THIS */
/**
 * @}
 */
 
/**
 * @brief Factorization algorithms available for IPARM_FACTORIZATION parameter
 */
typedef enum pastix_factotype_e {
    PastixFactPOTRF = 0, /**< Cholesky factorization                   */
    PastixFactSYTRF = 1, /**< LDL^t factorization                      */
    PastixFactGETRF = 2, /**< LU factorization                         */
    PastixFactPXTRF = 3, /**< LL^t factorization for complex matrices  */
    PastixFactHETRF = 4, /**< LDL^h factorization for complex matrices */
    PastixFactLLH   = 0, /**< LL^h factorization for complex matrices  */
    PastixFactLDLT  = 1, /**< LDL^t factorization                      */
    PastixFactLU    = 2, /**< LU factorization                         */
    PastixFactLLT   = 3, /**< LL^t factorization                       */
    PastixFactLDLH  = 4  /**< LDL^h factorization for complex matrices */
} pastix_factotype_t;
 
/**
 * @brief Factorization looking side available for IPARM_FACTO_LOOK_SIDE parameter
 */
typedef enum pastix_factolookside_e {
    PastixFactLeftLooking  = 0, /**< Left Looking factorization  */
    PastixFactRightLooking = 1  /**< Right Looking factorization */
} pastix_factolookside_t;
 
/**
 * @brief Scheduler
 */
typedef enum pastix_scheduler_e {
    PastixSchedSequential = 0, /**< Sequential                           */
    PastixSchedStatic     = 1, /**< Shared memory with static scheduler  */
    PastixSchedParsec     = 2, /**< PaRSEC scheduler                     */
    PastixSchedStarPU     = 3, /**< StarPU scheduler                     */
    PastixSchedDynamic    = 4  /**< Shared memory with dynamic scheduler */
} pastix_scheduler_t;
 
/**
 * @brief Ordering strategy
 */
typedef enum pastix_ordering_e {
    PastixOrderScotch,   /**< Use Scotch ordering                         */
    PastixOrderMetis,    /**< Use Metis ordering                          */
    PastixOrderPersonal, /**< Apply user's permutation, or load from file */
    PastixOrderPtScotch, /**< Use Pt-Scotch ordering                      */
    PastixOrderParMetis  /**< Use ParMetis ordering                       */
} pastix_ordering_t;
 
/**
 * @brief MPI thread mode
 */
typedef enum pastix_mpithreadmode_e {
    PastixMpiNone             = 0, /**< No MPI support                */
    PastixMpiThreadSingle     = 1, /**< MPI thread single support     */
    PastixMpiThreadFunneled   = 2, /**< MPI thread funneled support   */
    PastixMpiThreadSerialized = 3, /**< MPI thread serialized support */
    PastixMpiThreadMultiple   = 4  /**< MPI thread multiple support   */
} pastix_mpithreadmode_t;
 
/**
 * @brief Error codes
 */
typedef enum pastix_error_e {
    PASTIX_SUCCESS            = 0,  /**< No error                   */
    PASTIX_ERR_UNKNOWN        = 1,  /**< Unknown error              */
    PASTIX_ERR_ALLOC          = 2,  /**< Allocation error           */
    PASTIX_ERR_NOTIMPLEMENTED = 3,  /**< Not implemented feature    */
    PASTIX_ERR_OUTOFMEMORY    = 4,  /**< Not enough memory          */
    PASTIX_ERR_THREAD         = 5,  /**< Error with threads         */
    PASTIX_ERR_INTERNAL       = 6,  /**< Internal error             */
    PASTIX_ERR_BADPARAMETER   = 7,  /**< Bad parameters given       */
    PASTIX_ERR_FILE           = 8,  /**< Error in In/Out operations */
    PASTIX_ERR_INTEGER_TYPE   = 9,  /**< Error with integer types   */
    PASTIX_ERR_IO             = 10, /**< Error with input/output    */
    PASTIX_ERR_MPI            = 11  /**< Error with MPI calls       */
} pastix_error_t;
 
/**
 * @brief Compression strategy available for IPARM_COMPRESS_WHEN parameter
 */
typedef enum pastix_compress_when_e {
    PastixCompressNever,      /**< Do not use compression                                              */
    PastixCompressWhenBegin,  /**< Compress before any numerical operation (Minimal-Memory)            */
    PastixCompressWhenEnd,    /**< Compress after contributions were accumulated (Just-In-Time)        */
    PastixCompressWhenDuring  /**< Compress after contributions from other supernodes were accumulated */
} pastix_compress_when_t;
 
/**
 * @brief Compression method available for IPARM_COMPRESS_METHOD parameter
 */
typedef enum pastix_compress_method_e {
    PastixCompressMethodSVD,   /**< Use singular value decomposition for low-rank compression       */
    PastixCompressMethodPQRCP, /**< Use partial QR with column pivoting for low-rank compression    */
    PastixCompressMethodRQRCP, /**< Use randomized QR with column pivoting for low-rank compression */
    PastixCompressMethodTQRCP, /**< Use truncated QR with column pivotingfor low-rank compression   */
    PastixCompressMethodRQRRT, /**< Use randomized QR with rotation for low-rank compression        */
    PastixCompressMethodNbr    /**< Total number of available compression methods                   */
} pastix_compress_method_t;
 
/**
 * @brief Orthogonalization method available for IPARM_COMPRESS_ORTHO parameter
 */
typedef enum pastix_compress_ortho_e {
    PastixCompressOrthoCGS,       /**< Orthogonalize low-rank bases with Gram-Schimdt                                           */
    PastixCompressOrthoQR,        /**< Orthogonalize low-rank bases with QR decomposition                                       */
    PastixCompressOrthoPartialQR  /**< Orthogonalize low-rank bases with projections in orthogonal space followed by smaller QR */
} pastix_compress_ortho_t;
 
/**
 * @brief Splitting strategy available for IPARM_SPLITTING_STRATEGY parameter
 */
typedef enum pastix_split_e {
    PastixSplitNot,             /**< Do not apply dedicated low-rank clustering strategy */
    PastixSplitKway,            /**< Use k-way partitioning                              */
    PastixSplitKwayProjections  /**< Use projections and k-way in clusters               */
} pastix_split_t;
 
/**
 *
 * @name Constants compatible with CBLAS & LAPACK & PLASMA
 * @{
 *    The naming and numbering of the following constants is consistent with:
 *
 *       - CBLAS from Netlib (http://www.netlib.org/blas/blast-forum/cblas.tgz)
 *       - C Interface to LAPACK from Netlib (http://www.netlib.org/lapack/lapwrapc/)
 *       - Plasma (http://icl.cs.utk.edu/plasma/index.html)
 *
 */
 
/**
 * @brief Direction of the matrix storage
 */
typedef enum pastix_layout_e {
    PastixRowMajor = 101, /**< Storage in row major order    */
    PastixColMajor = 102  /**< Storage in column major order */
} pastix_layout_t;
 
/**
 * @brief Transpostion
 */
typedef enum pastix_trans_e {
    PastixNoTrans   = 111, /**< Use A         */
    PastixTrans     = 112, /**< Use A^t       */
    PastixConjTrans = 113  /**< Use conj(A^t) */
} pastix_trans_t;
 
/**
 * @brief Matrix symmetry type property.
 *
 * @remark Must match transposition.
 */
typedef spm_mtxtype_t pastix_mtxtype_t;
#define PastixGeneral   SpmGeneral    /**< The matrix is general   */
#define PastixSymmetric SpmSymmetric  /**< The matrix is symmetric */
#define PastixHermitian SpmHermitian  /**< The matrix is hermitian */
 
/**
 * @brief Upper/Lower part
 */
typedef enum pastix_uplo_e {
    PastixUpper      = 121, /**< Use lower triangle of A */
    PastixLower      = 122, /**< Use upper triangle of A */
    PastixUpperLower = 123  /**< Use the full A          */
} pastix_uplo_t;
 
/**
 * @brief Data blocks used in the kernel
 *
 * @warning Must be 0 and 1 respectively for Left and Upper as is it used to
 * shift the pointers in the kernels from the lower to upper part.
 */
typedef enum pastix_coefside_e {
    PastixLCoef  = 0, /**< Coefficients of the lower triangular L are used         */
    PastixUCoef  = 1, /**< Coefficients of the upper triangular U are used         */
    PastixLUCoef = 2  /**< Coefficients of the upper/lower triangular U/L are used */
} pastix_coefside_t;
 
/**
 * @brief Diagonal
 */
typedef enum pastix_diag_e {
    PastixNonUnit = 131, /**< Diagonal is non unitary */
    PastixUnit    = 132  /**< Diagonal is unitary     */
} pastix_diag_t;
 
/**
 * @brief Side of the operation
 */
typedef enum pastix_side_e {
    PastixLeft  = 141, /**< Apply operator on the left  */
    PastixRight = 142  /**< Apply operator on the right */
} pastix_side_t;
 
/**
 * @brief Norms
 */
typedef enum pastix_normtype_e {
    PastixOneNorm       = 171, /**< One norm:       max_j( sum_i( |a_{ij}| ) )   */
    PastixFrobeniusNorm = 174, /**< Frobenius norm: sqrt( sum_{i,j} (a_{ij}^2) ) */
    PastixInfNorm       = 175, /**< Inifinite norm: max_i( sum_j( |a_{ij}| ) )   */
    PastixMaxNorm       = 177  /**< Inifinite norm: max_{i,j}( | a_{ij} | )      */
} pastix_normtype_t;
 
/**
 * @brief Direction
 */
typedef enum pastix_dir_e {
    PastixDirForward  = 391, /**< Forward direction  */
    PastixDirBackward = 392  /**< Backward direction */
} pastix_dir_t;
 
/**
 * @}
 */
 
END_C_DECLS
 
#endif /* _pastix_api_h_ */
 
/**
 * @}
 */