1 2 #include <../src/sys/classes/random/randomimpl.h> /*I "petscsys.h" I*/ 3 4 PetscFunctionList PetscRandomList = NULL; 5 PetscBool PetscRandomRegisterAllCalled = PETSC_FALSE; 6 7 #undef __FUNCT__ 8 #define __FUNCT__ "PetscRandomSetType" 9 /*@C 10 PetscRandomSetType - Builds a context for generating particular type of random numbers. 11 12 Collective on PetscRandom 13 14 Input Parameters: 15 + rnd - The random number generator context 16 - type - The name of the random type 17 18 Options Database Key: 19 . -random_type <type> - Sets the random type; use -help for a list 20 of available types 21 22 Notes: 23 See "petsc/include/petscsys.h" for available random types (for instance, PETSCRAND48, PETSCRAND). 24 25 Level: intermediate 26 27 .keywords: random, set, type 28 .seealso: PetscRandomGetType(), PetscRandomCreate() 29 @*/ 30 31 PetscErrorCode PetscRandomSetType(PetscRandom rnd, PetscRandomType type) 32 { 33 PetscErrorCode (*r)(PetscRandom); 34 PetscBool match; 35 PetscErrorCode ierr; 36 37 PetscFunctionBegin; 38 PetscValidHeaderSpecific(rnd, PETSC_RANDOM_CLASSID,1); 39 ierr = PetscObjectTypeCompare((PetscObject)rnd, type, &match);CHKERRQ(ierr); 40 if (match) PetscFunctionReturn(0); 41 42 ierr = PetscFunctionListFind(PetscObjectComm((PetscObject)rnd),PetscRandomList, type,PETSC_TRUE,(void (**)(void)) &r);CHKERRQ(ierr); 43 if (!r) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_ARG_UNKNOWN_TYPE, "Unknown random type: %s", type); 44 45 if (rnd->ops->destroy) { 46 ierr = (*rnd->ops->destroy)(rnd);CHKERRQ(ierr); 47 48 rnd->ops->destroy = NULL; 49 } 50 ierr = (*r)(rnd);CHKERRQ(ierr); 51 ierr = PetscRandomSeed(rnd);CHKERRQ(ierr); 52 53 ierr = PetscObjectChangeTypeName((PetscObject)rnd, type);CHKERRQ(ierr); 54 if (PetscAMSPublishAll) { 55 ierr = PetscObjectAMSPublish((PetscObject)rnd);CHKERRQ(ierr); 56 } 57 PetscFunctionReturn(0); 58 } 59 60 #undef __FUNCT__ 61 #define __FUNCT__ "PetscRandomGetType" 62 /*@C 63 PetscRandomGetType - Gets the type name (as a string) from the PetscRandom. 64 65 Not Collective 66 67 Input Parameter: 68 . rnd - The random number generator context 69 70 Output Parameter: 71 . type - The type name 72 73 Level: intermediate 74 75 .keywords: random, get, type, name 76 .seealso: PetscRandomSetType(), PetscRandomCreate() 77 @*/ 78 PetscErrorCode PetscRandomGetType(PetscRandom rnd, PetscRandomType *type) 79 { 80 PetscFunctionBegin; 81 PetscValidHeaderSpecific(rnd, PETSC_RANDOM_CLASSID,1); 82 PetscValidPointer(type,2); 83 *type = ((PetscObject)rnd)->type_name; 84 PetscFunctionReturn(0); 85 } 86 87 #undef __FUNCT__ 88 #define __FUNCT__ "PetscRandomRegister" 89 /*@C 90 PetscRandomRegister - See PetscRandomRegisterDynamic() 91 92 Level: advanced 93 @*/ 94 PetscErrorCode PetscRandomRegister(const char sname[], const char path[], const char name[], PetscErrorCode (*function)(PetscRandom)) 95 { 96 char fullname[PETSC_MAX_PATH_LEN]; 97 PetscErrorCode ierr; 98 99 PetscFunctionBegin; 100 ierr = PetscFunctionListConcat(path,name,fullname);CHKERRQ(ierr); 101 ierr = PetscFunctionListAdd(PETSC_COMM_WORLD,&PetscRandomList,sname,fullname,(void (*)(void))function);CHKERRQ(ierr); 102 PetscFunctionReturn(0); 103 } 104 105 106 /*--------------------------------------------------------------------------------------------------------------------*/ 107 #undef __FUNCT__ 108 #define __FUNCT__ "PetscRandomRegisterDestroy" 109 /*@C 110 PetscRandomRegisterDestroy - Frees the list of Random types that were registered by PetscRandomRegister()/PetscRandomRegisterDynamic(). 111 112 Not Collective 113 114 Level: advanced 115 116 .keywords: PetscRandom, register, destroy 117 .seealso: PetscRandomRegister(), PetscRandomRegisterAll(), PetscRandomRegisterDynamic() 118 @*/ 119 PetscErrorCode PetscRandomRegisterDestroy(void) 120 { 121 PetscErrorCode ierr; 122 123 PetscFunctionBegin; 124 ierr = PetscFunctionListDestroy(&PetscRandomList);CHKERRQ(ierr); 125 126 PetscRandomRegisterAllCalled = PETSC_FALSE; 127 PetscFunctionReturn(0); 128 } 129 130 #if defined(PETSC_HAVE_RAND) 131 PETSC_EXTERN PetscErrorCode PetscRandomCreate_Rand(PetscRandom); 132 #endif 133 #if defined(PETSC_HAVE_DRAND48) 134 PETSC_EXTERN PetscErrorCode PetscRandomCreate_Rand48(PetscRandom); 135 #endif 136 #if defined(PETSC_HAVE_SPRNG) 137 PETSC_EXTERN PetscErrorCode PetscRandomCreate_Sprng(PetscRandom); 138 #endif 139 140 #undef __FUNCT__ 141 #define __FUNCT__ "PetscRandomRegisterAll" 142 /*@C 143 PetscRandomRegisterAll - Registers all of the components in the PetscRandom package. 144 145 Not Collective 146 147 Input parameter: 148 . path - The dynamic library path 149 150 Level: advanced 151 152 .keywords: PetscRandom, register, all 153 .seealso: PetscRandomRegister(), PetscRandomRegisterDestroy(), PetscRandomRegisterDynamic() 154 @*/ 155 PetscErrorCode PetscRandomRegisterAll(const char path[]) 156 { 157 PetscErrorCode ierr; 158 159 PetscFunctionBegin; 160 PetscRandomRegisterAllCalled = PETSC_TRUE; 161 #if defined(PETSC_HAVE_RAND) 162 ierr = PetscRandomRegisterDynamic(PETSCRAND, path,"PetscRandomCreate_Rand", PetscRandomCreate_Rand);CHKERRQ(ierr); 163 #endif 164 #if defined(PETSC_HAVE_DRAND48) 165 ierr = PetscRandomRegisterDynamic(PETSCRAND48,path,"PetscRandomCreate_Rand48",PetscRandomCreate_Rand48);CHKERRQ(ierr); 166 #endif 167 #if defined(PETSC_HAVE_SPRNG) 168 ierr = PetscRandomRegisterDynamic(PETSCSPRNG,path,"PetscRandomCreate_Sprng",PetscRandomCreate_Sprng);CHKERRQ(ierr); 169 #endif 170 PetscFunctionReturn(0); 171 } 172 173