# libqalculate/Prefix.h File Reference

`#include <libqalculate/includes.h>`
`#include <libqalculate/Number.h>`

## Classes
class | Prefix
| Abstract class for prefixes. More...
class | DecimalPrefix
| A decimal (metric) prefix. More...
class | BinaryPrefix
| A binary prefix. More...
class | NumberPrefix
| A prefix with a free numerical value. More...
## Enumerations
enum | PrefixType { PREFIX_DECIMAL, PREFIX_BINARY, PREFIX_NUMBER }
| Types for prefix classes.

## Detailed Description