petsc-master 2020-10-26
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PetscDTGradedOrderToIndex

convert a tuple into an index in a graded order, the inverse of PetscDTIndexToGradedOrder().

Synopsis

#include "petscdt.h" 
PetscErrorCode PetscDTGradedOrderToIndex(PetscInt len, const PetscInt degtup[], PetscInt *index)

Input Parameters

len - the length of the degree tuple
degtup - tuple with this length

Output Parameter

index - index in graded order: >= 0

Note: for two tuples x and y with the same degree sum, partial degree sums over the final elements of the tuples acts as a tiebreaker. For example, (2, 1, 1) and (1, 2, 1) have the same degree sum, but the degree sum over the last two elements is smaller for the former, so (2, 1, 1) < (1, 2, 1).

See Also

PetscDTIndexToGradedOrder()

Level

Beginner

Location

src/dm/dt/interface/dt.c
Index of all DT routines
Table of Contents for all manual pages
Index of all manual pages