Install and enable the plugin

Prepare a Windows project and find the Blueprint nodes.

On this page

Before you start
Enable Scientific Number Tools
Choose the number policy
C++ consumers

Before you start

Use Unreal Engine 5.8 on Windows with a compatible C++ toolchain when building from source. The current plugin descriptor enables Win64. Android and Linux are not enabled by this revision; installing their SDKs alone does not add support.

Enable Scientific Number Tools

Close Unreal before installing a source copy. Place the plugin folder under your project’s Plugins/ScientificNumberTools, with ScientificNumberTools.uplugin directly inside that folder. Keep only one installed copy.
Open the project and build its modules if Unreal requests it.
Open Edit → Plugins, search for Scientific Number Tools, enable it and restart when prompted.
Create an Actor Blueprint. In its Event Graph, search for Make Scientific Number under Scientific Number.

Expected result

The Blueprint can place and compile a Make Scientific Number node.

Choose the number policy

Search for Scientific Number Settings in Project Settings. Idle Mode is disabled by default. If enabled, it rejects negative values but allows zero and positive fractions. Disable it for signed calculations, then restart the editor. The process policy locks after use; changing the setting during a running session is not sufficient.

C++ consumers

Add ScientificNumberTools to the consuming module’s dependencies for numeric operations. Add ScientificNumberToolsSecurity when using Safe values and its Prepare/Restore bridge. Include ScientificNumber.h for FScientificNumber. Runtime code must not depend on the editor module.

The AI connection is optional. Leave it disabled for your first calculation.