1 /* $Id: pc.h,v 1.44 1996/01/05 19:20:14 balay Exp curfman $ */ 2 3 /* 4 Preconditioner module. Defines the preconditioner routines. 5 */ 6 #if !defined(__PC_PACKAGE) 7 #define __PC_PACKAGE 8 #include "petsc.h" 9 #include "mat.h" 10 11 typedef enum { PCNONE, PCJACOBI, PCSOR, PCLU, PCSHELL, PCBJACOBI, PCMG, 12 PCEISENSTAT, PCILU, PCICC, PCASM, PCBGS } PCType; 13 14 typedef struct _PC* PC; 15 #define PC_COOKIE PETSC_COOKIE+9 16 17 typedef struct _PCNullSpace* PCNullSpace; 18 #define PCNULLSPACE_COOKIE PETSC_COOKIE+17 19 20 extern int PCCreate(MPI_Comm,PC*); 21 extern int PCSetType(PC,PCType); 22 extern int PCSetUp(PC); 23 extern int PCApply(PC,Vec,Vec); 24 extern int PCApplySymmLeft(PC,Vec,Vec); 25 extern int PCApplySymmRight(PC,Vec,Vec); 26 extern int PCApplyBAorAB(PC,int,Vec,Vec,Vec); 27 extern int PCApplyTrans(PC,Vec,Vec); 28 extern int PCApplyBAorABTrans(PC,int,Vec,Vec,Vec); 29 extern int PCApplyRichardson(PC,Vec,Vec,Vec,int); 30 extern int PCApplyRichardsonExists(PC); 31 extern int PCRegisterAll(); 32 extern int PCRegisterDestroy(); 33 extern int PCRegister(PCType,char *,int (*)(PC)); 34 extern int PCDestroy(PC); 35 extern int PCSetFromOptions(PC); 36 extern int PCGetType(PC,PCType*,char**); 37 extern int PCGetFactoredMatrix(PC,Mat*); 38 39 typedef enum {ALLMAT_DIFFERENT_NONZERO_PATTERN=0,MAT_SAME_NONZERO_PATTERN=1, 40 PMAT_SAME_NONZERO_PATTERN=2,ALLMAT_SAME_NONZERO_PATTERN=3} MatStructure; 41 extern int PCSetOperators(PC,Mat,Mat,MatStructure); 42 extern int PCGetOperators(PC,Mat*,Mat*,MatStructure*); 43 44 extern int PCSetVector(PC,Vec); 45 extern int PCPrintHelp(PC); 46 extern int PCView(PC,Viewer); 47 extern int PCSetOptionsPrefix(PC,char*); 48 49 extern int PCNullSpaceCreate(MPI_Comm,int,int,Vec *,PCNullSpace*); 50 extern int PCNullSpaceDestroy(PCNullSpace); 51 extern int PCNullSpaceRemove(PCNullSpace,Vec); 52 53 /* options specific to particular preconditioners */ 54 extern int PCSORSetSymmetric(PC, MatSORType); 55 extern int PCSORSetOmega(PC, double); 56 extern int PCEisenstatSetOmega(PC, double); 57 extern int PCSORSetIterations(PC, int); 58 59 typedef enum {BGS_FORWARD_SWEEP=1,BGS_SYMMETRIC_SWEEP=2} PCBGSType; 60 extern int PCBGSSetSymmetric(PC, PCBGSType); 61 62 #define USE_PRECONDITIONER_MATRIX 0 63 #define USE_TRUE_MATRIX 1 64 65 extern int PCBJacobiSetUseTrueLocal(PC); 66 extern int PCBJacobiSetTotalBlocks(PC, int, int*,int*); 67 extern int PCBJacobiSetLocalBlocks(PC, int, int*,int*); 68 69 extern int PCBGSSetUseTrueLocal(PC); 70 extern int PCBGSSetTotalBlocks(PC, int, int*,int*); 71 extern int PCBGSSetLocalBlocks(PC, int, int*,int*); 72 extern int PCBGSSetSymmetric(PC, PCBGSType); 73 74 extern int PCBSIterSetBlockSolve(PC); 75 extern int PCBSIterSetFromOptions(PC); 76 extern int PCBSIterSolve(PC,Vec,Vec,int*); 77 78 extern int PCShellSetApply(PC, int (*)(void*,Vec,Vec), void*); 79 extern int PCShellSetApplyRichardson(PC,int (*)(void*,Vec,Vec,Vec,int),void*); 80 81 extern int PCLUSetUseInPlace(PC); 82 extern int PCILUSetUseInPlace(PC); 83 extern int PCILUSetLevels(PC,int); 84 extern int PCEisenstatUseDiagonalScaling(PC); 85 86 extern int PCASMCreateSubdomains2D(int,int,int,int,int,int,int *,IS **); 87 extern int PCASMSetSubdomains(PC, int, IS *); 88 89 #endif 90 91