# ISLocalToGlobalMapping#

mappings from an arbitrary local ordering from 0 to n-1 to a global PETSc ordering used by a vector or matrix.

## Synopsis#

typedef struct _p_ISLocalToGlobalMapping *ISLocalToGlobalMapping;


## Notes#

Mapping from local to global is scalable; but global to local may not be if the range of global values represented locally is very large.

ISLocalToGlobalMapping is actually a private object; it is included here for the inline function ISLocalToGlobalMappingApply() to allow it to be inlined since it is used so often.

ISLocalToGlobalMappingCreate(), ISLocalToGlobalMappingApply(), ISLocalToGlobalMappingDestroy()

intermediate

## Location#

include/petscistypes.h

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