petsc-3.10.5 2019-03-28
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# PetscDataType

Used for handling different basic data types.

### Synopsis

    typedef enum {PETSC_INT = 0,PETSC_DOUBLE = 1,PETSC_COMPLEX = 2, PETSC_LONG = 3 ,PETSC_SHORT = 4,PETSC_FLOAT = 5,
                  PETSC_CHAR = 6,PETSC_BIT_LOGICAL = 7,PETSC_ENUM = 8,PETSC_BOOL=9, PETSC___FLOAT128 = 10,PETSC_OBJECT = 11, PETSC_FUNCTION = 12, PETSC_STRING = 13, PETSC___FP16 = 14,PETSC_STRUCT, PETSC_DATATYPE_UNKNOWN} PetscDataType;

### Notes

Use of this should be avoided if one can directly use MPI_Datatype instead.

### Developer comment

It would be nice if we could always just use MPI Datatypes, why can we not?

### See Also

PetscBinaryRead(), PetscBinaryWrite(), PetscDataTypeToMPIDataType(),
PetscDataTypeGetSize()

### Level

beginner

### Location

include/petscsys.h

### Examples

src/sys/examples/tutorials/ex5.c.html
src/sys/examples/tutorials/ex11.c.html
src/vec/vec/examples/tutorials/ex6.c.html
src/mat/examples/tutorials/ex5.c.html
src/dm/examples/tutorials/ex20.c.html
src/dm/examples/tutorials/swarm_ex3.c.html
Index of all Sys routines
Table of Contents for all manual pages
Index of all manual pages