PetscMemcpy#
Copies n bytes, beginning at location b, to the space beginning at location a. The two memory regions CANNOT overlap, use PetscMemmove() in that case.
Synopsis#
static inline PetscErrorCode PetscMemcpy(void *a, const void *b, size_t n)
Not Collective, No Fortran Support
Input Parameters#
b - pointer to initial memory space
n - length (in bytes) of space to copy
Output Parameter#
a - pointer to copy space
Compile Options:
PETSC_PREFER_DCOPY_FOR_MEMCPY- cause the BLASdcopy()routine to be used for memory copies on double precision values.PETSC_PREFER_COPY_FOR_MEMCPY- cause C code to be used for memory copies on double precision values.PETSC_PREFER_FORTRAN_FORMEMCPY- cause Fortran code to be used for memory copies on double precision values.
Notes#
Prefer PetscArraycpy()
This routine is analogous to memcpy().
See Also#
PetscMemzero(), PetscMemcmp(), PetscArrayzero(), PetscArraycmp(), PetscArraycpy(), PetscMemmove(), PetscStrallocpy()
Level#
intermediate
Location#
Examples#
src/ts/tutorials/ex10.c
src/ksp/ksp/tutorials/ex74.c
src/ts/tutorials/ex11.c
Index of all Sys routines
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Index of all manual pages