Basix
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cpp
basix
indexing.h
1
// Copyright (c) 2020 Chris Richardson
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// FEniCS Project
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// SPDX-License-Identifier: MIT
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#pragma once
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8
namespace
basix::indexing
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{
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constexpr
int
idx
(
int
p
) {
return
p
; }
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22
constexpr
int
idx
(
int
p
,
int
q
) {
return
(
p
+
q
+ 1) * (
p
+
q
) / 2 +
q
; }
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constexpr
int
idx
(
int
p
,
int
q
,
int
r
)
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{
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return
(
p
+
q
+
r
) * (
p
+
q
+
r
+ 1) * (
p
+
q
+
r
+ 2) / 6
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+ (
q
+
r
) * (
q
+
r
+ 1) / 2 +
r
;
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}
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}
// namespace basix::indexing
basix::FiniteElement
A finite element.
Definition
finite-element.h:139
basix::indexing
Indexing.
Definition
indexing.h:9
basix::indexing::idx
constexpr int idx(int p)
Compute trivial indexing in a 1D array (for completeness).
Definition
indexing.h:13
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