petsc-master 2017-12-10
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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 in first chunk

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 allocatd, used PetscCalloc1() to obtain memory that has been zeroed.

See Also

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

Level:beginner
Location:
include/petscsys.h
Index of all Sys routines
Table of Contents for all manual pages
Index of all manual pages

Examples

src/sys/classes/random/examples/tutorials/ex1.c.html
src/sys/classes/random/examples/tutorials/ex2.c.html
src/vec/vec/utils/tagger/examples/tutorials/ex1.c.html
src/vec/vec/examples/tutorials/ex6.c.html
src/vec/vec/examples/tutorials/ex8.c.html
src/vec/vec/examples/tutorials/ex9.c.html
src/vec/is/is/examples/tutorials/ex1.c.html
src/vec/is/sf/examples/tutorials/ex1.c.html
src/vec/is/sf/examples/tutorials/ex2.c.html
src/mat/examples/tutorials/ex2.c.html
src/mat/examples/tutorials/ex5.c.html