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/* ========================================================================== */
/* === SuiteSparseQR_definitions.h ========================================== */
/* ========================================================================== */
/* Core definitions for both C and C++ programs. */
#ifndef SUITESPARSEQR_DEFINITIONS_H
#define SUITESPARSEQR_DEFINITIONS_H
/* ordering options */
#define SPQR_ORDERING_FIXED 0
#define SPQR_ORDERING_NATURAL 1
#define SPQR_ORDERING_COLAMD 2
#define SPQR_ORDERING_GIVEN 3 /* only used for C/C++ interface */
#define SPQR_ORDERING_CHOLMOD 4 /* CHOLMOD best-effort (COLAMD, METIS,...)*/
#define SPQR_ORDERING_AMD 5 /* AMD(A'*A) */
#define SPQR_ORDERING_METIS 6 /* metis(A'*A) */
#define SPQR_ORDERING_DEFAULT 7 /* SuiteSparseQR default ordering */
#define SPQR_ORDERING_BEST 8 /* try COLAMD, AMD, and METIS; pick best */
#define SPQR_ORDERING_BESTAMD 9 /* try COLAMD and AMD; pick best */
/* Let [m n] = size of the matrix after pruning singletons. The default
* ordering strategy is to use COLAMD if m <= 2*n. Otherwise, AMD(A'A) is
* tried. If there is a high fill-in with AMD then try METIS(A'A) and take
* the best of AMD and METIS. METIS is not tried if it isn't installed. */
/* tol options */
#define SPQR_DEFAULT_TOL (-2) /* if tol <= -2, the default tol is used */
#define SPQR_NO_TOL (-1) /* if -2 < tol < 0, then no tol is used */
/* for qmult, method can be 0,1,2,3: */
#define SPQR_QTX 0
#define SPQR_QX 1
#define SPQR_XQT 2
#define SPQR_XQ 3
/* system can be 0,1,2,3: Given Q*R=A*E from SuiteSparseQR_factorize: */
#define SPQR_RX_EQUALS_B 0 /* solve R*X=B or X = R\B */
#define SPQR_RETX_EQUALS_B 1 /* solve R*E'*X=B or X = E*(R\B) */
#define SPQR_RTX_EQUALS_B 2 /* solve R'*X=B or X = R'\B */
#define SPQR_RTX_EQUALS_ETB 3 /* solve R'*X=E'*B or X = R'\(E'*B) */
/* ========================================================================== */
/* === SuiteSparseQR version ================================================ */
/* ========================================================================== */
/*
All versions of SuiteSparseQR will include the following definitions.
As an example, to test if the version you are using is 1.3 or later:
if (SPQR_VERSION >= SPQR_VER_CODE (1,3)) ...
This also works during compile-time:
#if SPQR_VERSION >= SPQR_VER_CODE (1,3)
printf ("This is version 1.3 or later\n") ;
#else
printf ("This is version is earlier than 1.3\n") ;
#endif
*/
#define SPQR_DATE "Jun 20, 2012"
#define SPQR_VER_CODE(main,sub) ((main) * 1000 + (sub))
#define SPQR_MAIN_VERSION 1
#define SPQR_SUB_VERSION 3
#define SPQR_SUBSUB_VERSION 1
#define SPQR_VERSION SPQR_VER_CODE(SPQR_MAIN_VERSION,SPQR_SUB_VERSION)
#endif
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