petsc-master 2014-12-15
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PetscMemzero

Zeros the specified memory.

Synopsis

PETSC_STATIC_INLINE PetscErrorCode  PetscMemzero(void *a,size_t n)
Not Collective

Input Parameters

a - pointer to beginning memory location
n - length (in bytes) of memory to initialize

Compile Option

PETSC_PREFER_BZERO - on certain machines (the IBM RS6000) the bzero() routine happens to be faster than the memset() routine. This flag causes the bzero() routine to be used.

Developer Note: this is inlined for fastest performance

See Also

PetscMemcpy()

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

Examples

src/sys/examples/tutorials/ex5.c.html
src/mat/examples/tutorials/ex5.c.html
src/ksp/ksp/examples/tutorials/ex28.c.html
src/ksp/ksp/examples/tutorials/ex42.c.html
src/ksp/ksp/examples/tutorials/ex43.c.html
src/ksp/ksp/examples/tutorials/ex49.c.html
src/snes/examples/tutorials/ex7.c.html
src/snes/examples/tutorials/ex15.c.html
src/snes/examples/tutorials/ex48.c.html
src/snes/examples/tutorials/ex54.c.html
src/ts/examples/tutorials/ex9.c.html