# qactypes, Qactypes

Tells the compiler to include the Algorithmic C (AC) data type folder for header searches and link to the AC data types libraries for Field Programmable Gate Array (FPGA) and CPU compilations.

## Syntax

Linux: | -qactypes

Windows: | /Qactypes

## Arguments

None

## Default

OFF | The compiler does not search the Algorithmic C (AC) data type folders for headers and doesn’t link to AC data type libraries for FPGA and CPU compilations. As a result, AC data types cannot be used in the source program.

## Description

This option tells the compiler to include the Algorithmic C (AC) data type folder when searching for headers, and to link to the AC data types libraries for Field Programmable Gate Array (FPGA) and CPU compilations.

AC data types provide support for arbitrary precision integers, fixed precision integers and arbitrary precision floating-point data types. They are built on top of the _ExtInt extended-integer type class.

When you specify option [q or Q]actypes, dynamic linking is the default. You cannot link to the AC data type libraries statically.

### Note

On Windows* systems, this option adds directives to the compiled code, which the linker then reads without further input from the driver. You do not need to specify a separate link command.

On Linux* systems, the driver must add the library names explicitly to the link command. You must use option -qactypes to perform the link to pull in the dependent libraries.

## IDE Equivalent

None

## Alternate Options

None

Parent topic: Advanced Optimization Options