petsc-3.14.6 2021-03-30
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PetscMalloc1

 Allocates an array of memory aligned to PETSC_MEMALIGN

Synopsis

#include <petscsys.h>
PetscErrorCode PetscMalloc1(size_t m1,type **r1)
Not Collective

Input Parameter

m1 - number of elements to allocate (may be zero)

Output Parameter

r1 - memory allocated

Note

This uses the sizeof() of the memory type requested to determine the total memory to be allocated, therefore you should not multiply the number of elements requested by the sizeof() the type. For example use 
 PetscInt *id;

 PetscMalloc1(10,&id);
not 
 PetscInt *id;

 PetscMalloc1(10*sizeof(PetscInt),&id);

Does not zero the memory allocated, use PetscCalloc1() to obtain memory that has been zeroed.

See Also

PetscFree(), PetscNew(), PetscMalloc(), PetscCalloc1(), PetscMalloc2()

Level

beginner

Location

include/petscsys.h

Examples

src/sys/classes/random/tutorials/ex1.c.html
src/sys/classes/random/tutorials/ex2.c.html
src/vec/vec/utils/tagger/tutorials/ex1.c.html
src/vec/vec/tutorials/ex6.c.html
src/vec/vec/tutorials/ex8.c.html
src/vec/vec/tutorials/ex9.c.html
src/vec/is/is/tutorials/ex1.c.html
src/vec/is/sf/tutorials/ex1.c.html
src/vec/is/sf/tutorials/ex2.c.html
src/mat/tutorials/ex2.c.html
src/mat/tutorials/ex9.c.html

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Index of all manual pages