Actual source code: ptype.c
petsc-3.8.0 2017-09-26
2: /*
3: Provides utility routines for manipulating any type of PETSc object.
4: */
5: #include <petscsys.h>
7: /*@C
8: PetscDataTypeToMPIDataType - Converts the PETSc name of a datatype to its MPI name.
10: Not collective
12: Input Parameter:
13: . ptype - the PETSc datatype name (for example PETSC_DOUBLE)
15: Output Parameter:
16: . mtype - the MPI datatype (for example MPI_DOUBLE, ...)
18: Level: advanced
20: .seealso: PetscDataType, PetscMPIDataTypeToPetscDataType()
21: @*/
22: PetscErrorCode PetscDataTypeToMPIDataType(PetscDataType ptype,MPI_Datatype *mtype)
23: {
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: #elif defined(PETSC_USE_REAL___FP16)
46: else if (ptype == PETSC___FP16) *mtype = MPIU___FP16;
47: #endif
48: else SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Unknown PETSc datatype");
49: return(0);
50: }
52: /*@C
53: PetscMPIDataTypeToPetscDataType Finds the PETSc name of a datatype from its MPI name
55: Not collective
57: Input Parameter:
58: . mtype - the MPI datatype (for example MPI_DOUBLE, ...)
60: Output Parameter:
61: . ptype - the PETSc datatype name (for example PETSC_DOUBLE)
63: Level: advanced
65: .seealso: PetscDataType, PetscMPIDataTypeToPetscDataType()
66: @*/
67: PetscErrorCode PetscMPIDataTypeToPetscDataType(MPI_Datatype mtype,PetscDataType *ptype)
68: {
70: if (mtype == MPIU_INT) *ptype = PETSC_INT;
71: else if (mtype == MPI_INT) *ptype = PETSC_INT;
72: else if (mtype == MPI_DOUBLE) *ptype = PETSC_DOUBLE;
73: #if defined(PETSC_USE_COMPLEX)
74: #if defined(PETSC_USE_REAL_SINGLE)
75: else if (mtype == MPIU_C_COMPLEX) *ptype = PETSC_COMPLEX;
76: #elif defined(PETSC_USE_REAL___FLOAT128)
77: else if (mtype == MPIU___COMPLEX128) *ptype = PETSC_COMPLEX;
78: #else
79: else if (mtype == MPIU_C_DOUBLE_COMPLEX) *ptype = PETSC_COMPLEX;
80: #endif
81: #endif
82: else if (mtype == MPI_LONG) *ptype = PETSC_LONG;
83: else if (mtype == MPI_SHORT) *ptype = PETSC_SHORT;
84: else if (mtype == MPI_FLOAT) *ptype = PETSC_FLOAT;
85: else if (mtype == MPI_CHAR) *ptype = PETSC_CHAR;
86: #if defined(PETSC_USE_REAL___FLOAT128)
87: else if (mtype == MPIU___FLOAT128) *ptype = PETSC___FLOAT128;
88: #elif defined(PETSC_USE_REAL___FP16)
89: else if (mtype == MPIU___FP16) *ptype = PETSC___FP16;
90: #endif
91: else SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP,"Unhandled MPI datatype");
92: return(0);
93: }
95: typedef enum {PETSC_INT_SIZE = sizeof(PetscInt),
96: PETSC_DOUBLE_SIZE = sizeof(double),
97: PETSC_COMPLEX_SIZE = sizeof(PetscScalar),
98: PETSC_LONG_SIZE = sizeof(long),
99: PETSC_SHORT_SIZE = sizeof(short),
100: PETSC_FLOAT_SIZE = sizeof(float),
101: PETSC_CHAR_SIZE = sizeof(char),
102: PETSC_BIT_LOGICAL_SIZE = sizeof(char),
103: PETSC_ENUM_SIZE = sizeof(PetscBool),
104: PETSC_BOOL_SIZE = sizeof(PetscBool)
105: #if defined(PETSC_USE_REAL___FLOAT128)
106: ,PETSC___FLOAT128_SIZE = sizeof(__float128)
107: #elif defined(PETSC_USE_REAL___FP16)
108: ,PETSC___FP16_SIZE = sizeof(__fp16)
109: #endif
110: } PetscDataTypeSize;
112: /*@C
113: PetscDataTypeGetSize - Gets the size (in bytes) of a PETSc datatype
115: Not collective
117: Input Parameter:
118: . ptype - the PETSc datatype name (for example PETSC_DOUBLE)
120: Output Parameter:
121: . size - the size in bytes (for example the size of PETSC_DOUBLE is 8)
123: Level: advanced
125: .seealso: PetscDataType, PetscDataTypeToMPIDataType()
126: @*/
127: PetscErrorCode PetscDataTypeGetSize(PetscDataType ptype,size_t *size)
128: {
130: if ((int) ptype < 0) {
131: *size = -(int) ptype;
132: return(0);
133: }
135: if (ptype == PETSC_INT) *size = PETSC_INT_SIZE;
136: else if (ptype == PETSC_DOUBLE) *size = PETSC_DOUBLE_SIZE;
137: #if defined(PETSC_USE_COMPLEX)
138: else if (ptype == PETSC_COMPLEX) *size = PETSC_COMPLEX_SIZE;
139: #endif
140: else if (ptype == PETSC_LONG) *size = PETSC_LONG_SIZE;
141: else if (ptype == PETSC_SHORT) *size = PETSC_SHORT_SIZE;
142: else if (ptype == PETSC_FLOAT) *size = PETSC_FLOAT_SIZE;
143: else if (ptype == PETSC_CHAR) *size = PETSC_CHAR_SIZE;
144: else if (ptype == PETSC_ENUM) *size = PETSC_ENUM_SIZE;
145: else if (ptype == PETSC_BIT_LOGICAL) *size = PETSC_BIT_LOGICAL_SIZE;
146: else if (ptype == PETSC_BOOL) *size = PETSC_BOOL_SIZE;
147: #if defined(PETSC_USE_REAL___FLOAT128)
148: else if (ptype == PETSC___FLOAT128) *size = PETSC___FLOAT128_SIZE;
149: #elif defined(PETSC_USE_REAL___FP16)
150: else if (ptype == PETSC___FP16) *size = PETSC___FP16_SIZE;
151: #endif
152: else SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Unknown PETSc datatype");
153: return(0);
154: }
156: /*@C
157: PetscDataTypeFromString - Gets the enum value of a PETSc datatype represented as a string
159: Not collective
161: Input Parameter:
162: . name - the PETSc datatype name (for example, DOUBLE or real or Scalar)
164: Output Parameter:
165: + ptype - the enum value
166: - found - the string matches one of the data types
168: Level: advanced
170: .seealso: PetscDataType, PetscDataTypeToMPIDataType(), PetscDataTypeGetSize()
171: @*/
172: PetscErrorCode PetscDataTypeFromString(const char*name, PetscDataType *ptype,PetscBool *found)
173: {
177: PetscEnumFind(PetscDataTypes,name,(PetscEnum*)ptype,found);
178: if (!*found) {
179: char formatted[16];
181: PetscStrncpy(formatted,name,16);
182: PetscStrtolower(formatted);
183: PetscStrcmp(formatted,"scalar",found);
184: if (*found) {
185: *ptype = PETSC_SCALAR;
186: } else {
187: PetscStrcmp(formatted,"real",found);
188: if (*found) {
189: *ptype = PETSC_REAL;
190: }
191: }
192: }
193: return(0);
194: }