---
name: "sc_BendSimpleCo"
section: "3"
platform: "linux"
package: "libsc-doc"
version: "2.3.1-22"
release: "Debian 12 (Bookworm)"
platforms: ["linux"]
url: "https://new.carta.tech/sc_BendSimpleCo"
---

# sc\_BendSimpleCo(3)

The BendSimpleCo class describes an bend internal coordinate of a molecule.

## NAME

sc::BendSimpleCo - The **BendSimpleCo** class describes an bend internal coordinate of a molecule.

## SYNOPSIS

`#include <simple.h>`

Inherits **sc::SimpleCo**.

### Public Member Functions

**BendSimpleCo** (const **BendSimpleCo** &)\
 **BendSimpleCo** (const char \*, int, int, int)\
 This constructor takes a string containing a label, and three integers a, b, and c which give the indices of the atoms involved in the angle abc.  **BendSimpleCo** (const **Ref**\< **KeyVal** \> &)\
 The **KeyVal** constructor.  const char \* **ctype** () const\
 Always returns the string 'BEND'.  double **radians** () const\
 Returns the value of the angle abc in radians.  double **degrees** () const\
 Returns the value of the angle abc in degrees.  double **preferred\_value** () const\
 Returns the value of the angle abc in degrees.

### Additional Inherited Members

## Detailed Description

The **BendSimpleCo** class describes an bend internal coordinate of a molecule.

The input is described in the documentation of its parent class **SimpleCo**.

Designating the three atoms as $a$, $b$, and $c$ and their cartesian positions as $$, $nd $lue of the coordinate, $ heta$, is given by

## Constructor & Destructor Documentation

### sc::BendSimpleCo::BendSimpleCo (const char \*, int, int, int)

This constructor takes a string containing a label, and three integers a, b, and c which give the indices of the atoms involved in the angle abc. Atom numbering begins at atom 1, not atom 0.

### sc::BendSimpleCo::BendSimpleCo (const Ref\< KeyVal \> &)

The **KeyVal** constructor. This calls the **SimpleCo** keyval constructor with an integer argument of 3.

## Member Function Documentation

### const char \* sc::BendSimpleCo::ctype () const` [virtual]`

Always returns the string 'BEND'.

Implements **sc::IntCoor**.

### double sc::BendSimpleCo::preferred\_value () const` [virtual]`

Returns the value of the angle abc in degrees.

Reimplemented from **sc::IntCoor**.

## Author

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