1 2 /* 3 Provides utility routines for manipulating any type of PETSc object. 4 */ 5 #include <petscsys.h> /*I "petscsys.h" I*/ 6 7 /*@C 8 PetscDataTypeToMPIDataType - Converts the PETSc name of a datatype to its MPI name. 9 10 Not collective 11 12 Input Parameter: 13 . ptype - the PETSc datatype name (for example PETSC_DOUBLE) 14 15 Output Parameter: 16 . mtype - the MPI datatype (for example MPI_DOUBLE, ...) 17 18 Level: advanced 19 20 .seealso: PetscDataType, PetscMPIDataTypeToPetscDataType() 21 @*/ 22 PetscErrorCode PetscDataTypeToMPIDataType(PetscDataType ptype,MPI_Datatype *mtype) 23 { 24 PetscFunctionBegin; 25 if (ptype == PETSC_INT) *mtype = MPIU_INT; 26 else if (ptype == PETSC_DOUBLE) *mtype = MPI_DOUBLE; 27 #if defined(PETSC_USE_COMPLEX) 28 #if defined(PETSC_USE_REAL_SINGLE) 29 else if (ptype == PETSC_COMPLEX) *mtype = MPIU_C_COMPLEX; 30 #elif defined(PETSC_USE_REAL___FLOAT128) 31 else if (ptype == PETSC_COMPLEX) *mtype = MPIU___COMPLEX128; 32 #else 33 else if (ptype == PETSC_COMPLEX) *mtype = MPIU_C_DOUBLE_COMPLEX; 34 #endif 35 #endif 36 else if (ptype == PETSC_LONG) *mtype = MPI_LONG; 37 else if (ptype == PETSC_SHORT) *mtype = MPI_SHORT; 38 else if (ptype == PETSC_ENUM) *mtype = MPI_INT; 39 else if (ptype == PETSC_BOOL) *mtype = MPI_INT; 40 else if (ptype == PETSC_FLOAT) *mtype = MPI_FLOAT; 41 else if (ptype == PETSC_CHAR) *mtype = MPI_CHAR; 42 else if (ptype == PETSC_BIT_LOGICAL) *mtype = MPI_BYTE; 43 #if defined(PETSC_USE_REAL___FLOAT128) 44 else if (ptype == PETSC___FLOAT128) *mtype = MPIU___FLOAT128; 45 #endif 46 else SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Unknown PETSc datatype"); 47 PetscFunctionReturn(0); 48 } 49 50 /*@C 51 PetscMPIDataTypeToPetscDataType Finds the PETSc name of a datatype from its MPI name 52 53 Not collective 54 55 Input Parameter: 56 . mtype - the MPI datatype (for example MPI_DOUBLE, ...) 57 58 Output Parameter: 59 . ptype - the PETSc datatype name (for example PETSC_DOUBLE) 60 61 Level: advanced 62 63 .seealso: PetscDataType, PetscMPIDataTypeToPetscDataType() 64 @*/ 65 PetscErrorCode PetscMPIDataTypeToPetscDataType(MPI_Datatype mtype,PetscDataType *ptype) 66 { 67 PetscFunctionBegin; 68 if (mtype == MPIU_INT) *ptype = PETSC_INT; 69 else if (mtype == MPI_INT) *ptype = PETSC_INT; 70 else if (mtype == MPI_DOUBLE) *ptype = PETSC_DOUBLE; 71 #if defined(PETSC_USE_COMPLEX) 72 #if defined(PETSC_USE_REAL_SINGLE) 73 else if (mtype == MPIU_C_COMPLEX) *ptype = PETSC_COMPLEX; 74 #elif defined(PETSC_USE_REAL___FLOAT128) 75 else if (mtype == MPIU___COMPLEX128) *ptype = PETSC_COMPLEX; 76 #else 77 else if (mtype == MPIU_C_DOUBLE_COMPLEX) *ptype = PETSC_COMPLEX; 78 #endif 79 #endif 80 else if (mtype == MPI_LONG) *ptype = PETSC_LONG; 81 else if (mtype == MPI_SHORT) *ptype = PETSC_SHORT; 82 else if (mtype == MPI_FLOAT) *ptype = PETSC_FLOAT; 83 else if (mtype == MPI_CHAR) *ptype = PETSC_CHAR; 84 #if defined(PETSC_USE_REAL___FLOAT128) 85 else if (mtype == MPIU___FLOAT128) *ptype = PETSC___FLOAT128; 86 #endif 87 else SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP,"Unhandled MPI datatype"); 88 PetscFunctionReturn(0); 89 } 90 91 typedef enum {PETSC_INT_SIZE = sizeof(PetscInt), 92 PETSC_DOUBLE_SIZE = sizeof(double), 93 PETSC_COMPLEX_SIZE = sizeof(PetscScalar), 94 PETSC_LONG_SIZE = sizeof(long), 95 PETSC_SHORT_SIZE = sizeof(short), 96 PETSC_FLOAT_SIZE = sizeof(float), 97 PETSC_CHAR_SIZE = sizeof(char), 98 PETSC_BIT_LOGICAL_SIZE = sizeof(char), 99 PETSC_ENUM_SIZE = sizeof(PetscBool), 100 PETSC_BOOL_SIZE = sizeof(PetscBool), 101 PETSC___FLOAT128_SIZE = sizeof(long double) 102 } PetscDataTypeSize; 103 104 /*@C 105 PetscDataTypeGetSize - Gets the size (in bytes) of a PETSc datatype 106 107 Not collective 108 109 Input Parameter: 110 . ptype - the PETSc datatype name (for example PETSC_DOUBLE) 111 112 Output Parameter: 113 . size - the size in bytes (for example the size of PETSC_DOUBLE is 8) 114 115 Level: advanced 116 117 .seealso: PetscDataType, PetscDataTypeToMPIDataType() 118 @*/ 119 PetscErrorCode PetscDataTypeGetSize(PetscDataType ptype,size_t *size) 120 { 121 PetscFunctionBegin; 122 if ((int) ptype < 0) { 123 *size = -(int) ptype; 124 PetscFunctionReturn(0); 125 } 126 127 if (ptype == PETSC_INT) *size = PETSC_INT_SIZE; 128 else if (ptype == PETSC_DOUBLE) *size = PETSC_DOUBLE_SIZE; 129 #if defined(PETSC_USE_COMPLEX) 130 else if (ptype == PETSC_COMPLEX) *size = PETSC_COMPLEX_SIZE; 131 #endif 132 else if (ptype == PETSC_LONG) *size = PETSC_LONG_SIZE; 133 else if (ptype == PETSC_SHORT) *size = PETSC_SHORT_SIZE; 134 else if (ptype == PETSC_FLOAT) *size = PETSC_FLOAT_SIZE; 135 else if (ptype == PETSC_CHAR) *size = PETSC_CHAR_SIZE; 136 else if (ptype == PETSC_ENUM) *size = PETSC_ENUM_SIZE; 137 else if (ptype == PETSC_BIT_LOGICAL) *size = PETSC_BIT_LOGICAL_SIZE; 138 else if (ptype == PETSC_BOOL) *size = PETSC_BOOL_SIZE; 139 else if (ptype == PETSC___FLOAT128) *size = PETSC___FLOAT128_SIZE; 140 else SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Unknown PETSc datatype"); 141 PetscFunctionReturn(0); 142 } 143 144 /*@ 145 PetscDataTypeFromString - Gets the enum value of a PETSc datatype represented as a string 146 147 Not collective 148 149 Input Parameter: 150 . name - the PETSc datatype name (for example, DOUBLE or real or Scalar) 151 152 Output Parameter: 153 + ptype - the enum value 154 - found - the string matches one of the data types 155 156 Level: advanced 157 158 .seealso: PetscDataType, PetscDataTypeToMPIDataType(), PetscDataTypeGetSize() 159 @*/ 160 PetscErrorCode PetscDataTypeFromString(const char*name, PetscDataType *ptype,PetscBool *found) 161 { 162 PetscErrorCode ierr; 163 164 PetscFunctionBegin; 165 ierr = PetscEnumFind(PetscDataTypes,name,(PetscEnum*)ptype,found);CHKERRQ(ierr); 166 if (!*found) { 167 char formatted[16]; 168 169 ierr = PetscStrncpy(formatted,name,16);CHKERRQ(ierr); 170 ierr = PetscStrtolower(formatted);CHKERRQ(ierr); 171 ierr = PetscStrcmp(formatted,"scalar",found);CHKERRQ(ierr); 172 if (*found) { 173 *ptype = PETSC_SCALAR; 174 } else { 175 ierr = PetscStrcmp(formatted,"real",found);CHKERRQ(ierr); 176 if (*found) { 177 *ptype = PETSC_REAL; 178 } 179 } 180 } 181 PetscFunctionReturn(0); 182 } 183