---
name: "edge"
section: "7rheolef"
platform: "linux"
package: "librheolef-dev"
version: "7.0-2+b1"
release: "Debian 10 (Buster)"
platforms: ["linux"]
url: "https://new.carta.tech/edge/7rheolef"
---

# edge(7rheolef)

Edge reference element

## NAME

**edge** - Edge reference element

## DESCRIPTION

The edge reference element is K = \[0,1\].

```
      0---------1   x

```

Curved high order Pk edges (k \>= 1), in 2d or 3d geometries, are supported. These edges have internal nodes, numbered as:

```
      0----2----1     0--2--3--1    0-2-3-4-1
          P2              P3           P4

```

## IMPLEMENTATION

```
const size_t dimension = 1;
const Float  measure = 1;
const size_t n_vertex = 2;
const point vertex [n_vertex] = {
        point(0),
        point(1) };

```

## COPYRIGHT

Copyright (C) 2000-2018 Pierre Saramito \<Pierre.Saramito@imag.fr\> GPLv3+: GNU GPL version 3 or later \<http://gnu.org/licenses/gpl.html\>. This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.