Actual source code: ptype.c
1: /*
2: Provides utility routines for manipulating any type of PETSc object.
3: */
4: #include <petscsys.h>
6: const char *const PetscDataTypes[] = {"UNKNOWN", "DOUBLE", "COMPLEX", "LONG", "SHORT", "FLOAT", "CHAR", "BIT_LOGICAL", "ENUM", "BOOL", "__FLOAT128", "OBJECT",
7: "FUNCTION", "STRING", "__FP16", "STRUCT", "INT", "INT64", "COUNT", "INT32", "PetscDataType", "PETSC_", NULL};
9: /*@C
10: PetscDataTypeToMPIDataType - Converts the `PetscDataType` name of a datatype to its `MPI_Datatype`
12: Not Collective
14: Input Parameter:
15: . ptype - the PETSc datatype name (for example `PETSC_DOUBLE`)
17: Output Parameter:
18: . mtype - the MPI datatype (for example `MPI_DOUBLE`, ...)
20: Level: advanced
22: .seealso: `PetscDataType`, `PetscMPIDataTypeToPetscDataType()`
23: @*/
24: PetscErrorCode PetscDataTypeToMPIDataType(PetscDataType ptype, MPI_Datatype *mtype)
25: {
26: PetscFunctionBegin;
27: if (ptype == PETSC_INT) *mtype = MPIU_INT;
28: else if (ptype == PETSC_DOUBLE) *mtype = MPI_DOUBLE;
29: #if defined(PETSC_HAVE_COMPLEX)
30: #if defined(PETSC_USE_REAL_SINGLE)
31: else if (ptype == PETSC_COMPLEX) *mtype = MPI_C_COMPLEX;
32: #elif defined(PETSC_USE_REAL___FLOAT128)
33: else if (ptype == PETSC_COMPLEX) *mtype = MPIU___COMPLEX128;
34: #else
35: else if (ptype == PETSC_COMPLEX) *mtype = MPI_C_DOUBLE_COMPLEX;
36: #endif
37: #endif
38: else if (ptype == PETSC_LONG) *mtype = MPI_LONG;
39: else if (ptype == PETSC_SHORT) *mtype = MPI_SHORT;
40: else if (ptype == PETSC_ENUM) *mtype = MPI_INT;
41: else if (ptype == PETSC_BOOL) *mtype = MPI_INT;
42: else if (ptype == PETSC_INT64) *mtype = MPIU_INT64;
43: else if (ptype == PETSC_INT32) *mtype = MPIU_INT32;
44: else if (ptype == PETSC_FLOAT) *mtype = MPI_FLOAT;
45: else if (ptype == PETSC_CHAR) *mtype = MPI_CHAR;
46: else if (ptype == PETSC_BIT_LOGICAL) *mtype = MPI_BYTE;
47: #if defined(PETSC_USE_REAL___FLOAT128)
48: else if (ptype == PETSC___FLOAT128) *mtype = MPIU___FLOAT128;
49: #elif defined(PETSC_USE_REAL___FP16)
50: else if (ptype == PETSC___FP16) *mtype = MPIU___FP16;
51: #endif
52: else SETERRQ(PETSC_COMM_SELF, PETSC_ERR_ARG_OUTOFRANGE, "Unknown PETSc datatype");
53: PetscFunctionReturn(PETSC_SUCCESS);
54: }
56: /*@C
57: PetscMPIDataTypeToPetscDataType - Finds the `PetscDataType` name of a datatype from its `MPI_Datatype`
59: Not Collective
61: Input Parameter:
62: . mtype - the MPI datatype (for example `MPI_DOUBLE`, ...)
64: Output Parameter:
65: . ptype - the PETSc datatype name (for example `PETSC_DOUBLE`)
67: Level: advanced
69: .seealso: `PetscDataType`
70: @*/
71: PetscErrorCode PetscMPIDataTypeToPetscDataType(MPI_Datatype mtype, PetscDataType *ptype)
72: {
73: PetscFunctionBegin;
74: if (mtype == MPIU_INT) *ptype = PETSC_INT;
75: #if defined(PETSC_USE_64BIT_INDICES)
76: else if (mtype == MPI_INT) *ptype = PETSC_ENUM;
77: #endif
78: else if (mtype == MPIU_INT64) *ptype = PETSC_INT64;
79: else if (mtype == MPIU_INT32) *ptype = PETSC_INT32;
80: else if (mtype == MPI_DOUBLE) *ptype = PETSC_DOUBLE;
81: #if defined(PETSC_HAVE_COMPLEX)
82: #if defined(PETSC_USE_REAL_SINGLE)
83: else if (mtype == MPI_C_COMPLEX) *ptype = PETSC_COMPLEX;
84: #elif defined(PETSC_USE_REAL___FLOAT128)
85: else if (mtype == MPIU___COMPLEX128) *ptype = PETSC_COMPLEX;
86: #else
87: else if (mtype == MPI_C_DOUBLE_COMPLEX) *ptype = PETSC_COMPLEX;
88: #endif
89: #endif
90: else if (mtype == MPI_LONG) *ptype = PETSC_LONG;
91: else if (mtype == MPI_SHORT) *ptype = PETSC_SHORT;
92: else if (mtype == MPI_FLOAT) *ptype = PETSC_FLOAT;
93: else if (mtype == MPI_CHAR) *ptype = PETSC_CHAR;
94: #if defined(PETSC_USE_REAL___FLOAT128)
95: else if (mtype == MPIU___FLOAT128) *ptype = PETSC___FLOAT128;
96: #elif defined(PETSC_USE_REAL___FP16)
97: else if (mtype == MPIU___FP16) *ptype = PETSC___FP16;
98: #endif
99: else SETERRQ(PETSC_COMM_SELF, PETSC_ERR_SUP, "Unhandled MPI datatype");
100: PetscFunctionReturn(PETSC_SUCCESS);
101: }
103: typedef enum {
104: PETSC_INT_SIZE = sizeof(PetscInt),
105: PETSC_DOUBLE_SIZE = sizeof(double),
106: #if defined(PETSC_HAVE_COMPLEX)
107: PETSC_COMPLEX_SIZE = sizeof(PetscComplex),
108: #else
109: PETSC_COMPLEX_SIZE = 2 * sizeof(PetscReal),
110: #endif
111: PETSC_LONG_SIZE = sizeof(long),
112: PETSC_SHORT_SIZE = sizeof(short),
113: PETSC_FLOAT_SIZE = sizeof(float),
114: PETSC_CHAR_SIZE = sizeof(char),
115: PETSC_ENUM_SIZE = sizeof(PetscEnum),
116: PETSC_BOOL_SIZE = sizeof(PetscBool),
117: PETSC_INT64_SIZE = sizeof(PetscInt64),
118: PETSC_INT32_SIZE = sizeof(PetscInt32),
119: PETSC_BIT_LOGICAL_SIZE = sizeof(char)
120: #if defined(PETSC_USE_REAL___FLOAT128)
121: ,
122: PETSC___FLOAT128_SIZE = sizeof(__float128)
123: #elif defined(PETSC_USE_REAL___FP16)
124: ,
125: PETSC___FP16_SIZE = sizeof(__fp16)
126: #endif
127: } PetscDataTypeSize;
129: /*@C
130: PetscDataTypeGetSize - Gets the size (in bytes) of a PETSc datatype
132: Not Collective
134: Input Parameter:
135: . ptype - the PETSc datatype name (for example `PETSC_DOUBLE`)
137: Output Parameter:
138: . size - the size in bytes (for example the size of `PETSC_DOUBLE` is 8)
140: Level: advanced
142: .seealso: `PetscDataType`, `PetscDataTypeToMPIDataType()`
143: @*/
144: PetscErrorCode PetscDataTypeGetSize(PetscDataType ptype, size_t *size)
145: {
146: PetscFunctionBegin;
147: if ((int)ptype < 0) *size = -(int)ptype;
148: else if (ptype == PETSC_INT) *size = PETSC_INT_SIZE;
149: else if (ptype == PETSC_DOUBLE) *size = PETSC_DOUBLE_SIZE;
150: else if (ptype == PETSC_COMPLEX) *size = PETSC_COMPLEX_SIZE;
151: else if (ptype == PETSC_LONG) *size = PETSC_LONG_SIZE;
152: else if (ptype == PETSC_SHORT) *size = PETSC_SHORT_SIZE;
153: else if (ptype == PETSC_FLOAT) *size = PETSC_FLOAT_SIZE;
154: else if (ptype == PETSC_CHAR) *size = PETSC_CHAR_SIZE;
155: else if (ptype == PETSC_ENUM) *size = PETSC_ENUM_SIZE;
156: else if (ptype == PETSC_BOOL) *size = PETSC_BOOL_SIZE;
157: else if (ptype == PETSC_INT64) *size = PETSC_INT64_SIZE;
158: else if (ptype == PETSC_INT32) *size = PETSC_INT32_SIZE;
159: else if (ptype == PETSC_BIT_LOGICAL) *size = PETSC_BIT_LOGICAL_SIZE;
160: #if defined(PETSC_USE_REAL___FLOAT128)
161: else if (ptype == PETSC___FLOAT128) *size = PETSC___FLOAT128_SIZE;
162: #elif defined(PETSC_USE_REAL___FP16)
163: else if (ptype == PETSC___FP16) *size = PETSC___FP16_SIZE;
164: #endif
165: else SETERRQ(PETSC_COMM_SELF, PETSC_ERR_ARG_OUTOFRANGE, "Unknown PETSc datatype");
166: PetscFunctionReturn(PETSC_SUCCESS);
167: }
169: /*@C
170: PetscDataTypeFromString - Gets the enum value of a PETSc datatype represented as a string
172: Not Collective
174: Input Parameter:
175: . name - the PETSc datatype name (for example, "double" or "real")
177: Output Parameters:
178: + ptype - the enum value, only valid if found is `PETSC_TRUE`
179: - found - the string matches one of the data types
181: Level: advanced
183: .seealso: `PetscDataType`, `PetscDataTypeToMPIDataType()`, `PetscDataTypeGetSize()`
184: @*/
185: PetscErrorCode PetscDataTypeFromString(const char *name, PetscDataType *ptype, PetscBool *found)
186: {
187: PetscFunctionBegin;
188: PetscCall(PetscEnumFind(PetscDataTypes, name, (PetscEnum *)ptype, found));
189: if (!*found) {
190: char formatted[16];
192: PetscCall(PetscStrncpy(formatted, name, 16));
193: PetscCall(PetscStrtolower(formatted));
194: PetscCall(PetscStrcmp(formatted, "scalar", found));
195: if (*found) {
196: *ptype = PETSC_SCALAR;
197: } else {
198: PetscCall(PetscStrcmp(formatted, "real", found));
199: if (*found) *ptype = PETSC_REAL;
200: }
201: }
202: PetscFunctionReturn(PETSC_SUCCESS);
203: }