Adds lower and upper bound function blocks

Introduces F_LOWER_BOUND and F_UPPER_BOUND XML configurations
to compute the lower and upper bounds of array dimensions.
Includes event inputs/outputs and variable declarations
for precise functionality.

v

.

Author: franz-hoepfinger-4diac

data/typelibrary/iec61131-3-3.0.0/typelib/selection/F_LOWER_BOUND.fbt

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<FBType Name="F_LOWER_BOUND" Comment="Returns the lower bound of the dimension of the given array">
+	<Identification Standard="61131-3" Description="Copyright (c) 2026 Demmler Andreas Fahrzeugbau&#10; &#10;This program and the accompanying materials are made&#10;available under the terms of the Eclipse Public License 2.0&#10;which is available at https://www.eclipse.org/legal/epl-2.0/&#10;&#10;SPDX-License-Identifier: EPL-2.0">
+	</Identification>
+	<VersionInfo Organization="Demmler Andreas Fahrzeugbau" Version="1.0" Author="Franz Höpfinger" Date="2026-01-23" Remarks="Initial Implementation">
+	</VersionInfo>
+	<CompilerInfo packageName="iec61131::selection">
+	</CompilerInfo>
+	<InterfaceList>
+		<EventInputs>
+			<Event Name="REQ" Type="Event" Comment="Service Request">
+				<With Var="ARR"/>
+				<With Var="DIM"/>
+			</Event>
+		</EventInputs>
+		<EventOutputs>
+			<Event Name="CNF" Type="Event" Comment="Confirmation of Requested Service">
+				<With Var="OUT"/>
+			</Event>
+		</EventOutputs>
+		<InputVars>
+			<VarDeclaration Name="ARR" Type="ANY_DERIVED" Comment="input array"/>
+			<VarDeclaration Name="DIM" Type="ANY_INT" Comment="Dimension, 1-based" InitialValue="UDINT#1"/>
+		</InputVars>
+		<OutputVars>
+			<VarDeclaration Name="OUT" Type="ANY_INT" Comment="lowest index of the Dimension"/>
+		</OutputVars>
+	</InterfaceList>
+	<Attribute Name="eclipse4diac::core::TypeHash" Value="''"/>
+</FBType>

data/typelibrary/iec61131-3-3.0.0/typelib/selection/F_UPPER_BOUND.fbt

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<FBType Name="F_UPPER_BOUND" Comment="Returns the upper bound of the dimension of the given array">
+	<Identification Standard="61131-3" Description="Copyright (c) 2026 Demmler Andreas Fahrzeugbau&#10; &#10;This program and the accompanying materials are made&#10;available under the terms of the Eclipse Public License 2.0&#10;which is available at https://www.eclipse.org/legal/epl-2.0/&#10;&#10;SPDX-License-Identifier: EPL-2.0">
+	</Identification>
+	<VersionInfo Organization="Demmler Andreas Fahrzeugbau" Version="1.0" Author="Franz Höpfinger" Date="2026-01-23" Remarks="Initial Implementation">
+	</VersionInfo>
+	<CompilerInfo packageName="iec61131::selection">
+	</CompilerInfo>
+	<InterfaceList>
+		<EventInputs>
+			<Event Name="REQ" Type="Event" Comment="Service Request">
+				<With Var="ARR"/>
+				<With Var="DIM"/>
+			</Event>
+		</EventInputs>
+		<EventOutputs>
+			<Event Name="CNF" Type="Event" Comment="Confirmation of Requested Service">
+				<With Var="OUT"/>
+			</Event>
+		</EventOutputs>
+		<InputVars>
+			<VarDeclaration Name="ARR" Type="ANY_DERIVED" Comment="input array"/>
+			<VarDeclaration Name="DIM" Type="ANY_INT" Comment="Dimension, 1-based" InitialValue="UDINT#1"/>
+		</InputVars>
+		<OutputVars>
+			<VarDeclaration Name="OUT" Type="ANY_INT" Comment="highest index of the Dimension"/>
+		</OutputVars>
+	</InterfaceList>
+	<Attribute Name="eclipse4diac::core::TypeHash" Value="''"/>
+</FBType>