diff --git a/Makefile b/Makefile
index 71dfc132c..ce7edc279 100644
--- a/Makefile
+++ b/Makefile
@@ -115,7 +115,8 @@ MAN_SOURCE=man/cppcheck.1.xml
 
 ###### Object Files
 
-LIBOBJ =      $(SRCDIR)/check.o \
+LIBOBJ =      $(SRCDIR)/astutils.o \
+              $(SRCDIR)/check.o \
               $(SRCDIR)/check64bit.o \
               $(SRCDIR)/checkassert.o \
               $(SRCDIR)/checkautovariables.o \
@@ -282,6 +283,9 @@ endif
 
 ###### Build
 
+$(SRCDIR)/astutils.o: lib/astutils.cpp lib/cxx11emu.h lib/astutils.h lib/token.h lib/config.h lib/valueflow.h lib/mathlib.h
+	$(CXX) ${INCLUDE_FOR_LIB} $(CPPFLAGS) $(CFG) $(CXXFLAGS) $(UNDEF_STRICT_ANSI) -std=c++0x -c -o $(SRCDIR)/astutils.o $(SRCDIR)/astutils.cpp
+
 $(SRCDIR)/check.o: lib/check.cpp lib/cxx11emu.h lib/check.h lib/config.h lib/token.h lib/valueflow.h lib/mathlib.h lib/tokenize.h lib/errorlogger.h lib/suppressions.h lib/tokenlist.h lib/settings.h lib/library.h lib/standards.h lib/timer.h
 	$(CXX) ${INCLUDE_FOR_LIB} $(CPPFLAGS) $(CFG) $(CXXFLAGS) $(UNDEF_STRICT_ANSI) -std=c++0x -c -o $(SRCDIR)/check.o $(SRCDIR)/check.cpp
 
@@ -333,7 +337,7 @@ $(SRCDIR)/checknullpointer.o: lib/checknullpointer.cpp lib/cxx11emu.h lib/checkn
 $(SRCDIR)/checkobsolescentfunctions.o: lib/checkobsolescentfunctions.cpp lib/cxx11emu.h lib/checkobsolescentfunctions.h lib/config.h lib/check.h lib/token.h lib/valueflow.h lib/mathlib.h lib/tokenize.h lib/errorlogger.h lib/suppressions.h lib/tokenlist.h lib/settings.h lib/library.h lib/standards.h lib/timer.h lib/symboldatabase.h lib/utils.h
 	$(CXX) ${INCLUDE_FOR_LIB} $(CPPFLAGS) $(CFG) $(CXXFLAGS) $(UNDEF_STRICT_ANSI) -std=c++0x -c -o $(SRCDIR)/checkobsolescentfunctions.o $(SRCDIR)/checkobsolescentfunctions.cpp
 
-$(SRCDIR)/checkother.o: lib/checkother.cpp lib/cxx11emu.h lib/checkother.h lib/config.h lib/check.h lib/token.h lib/valueflow.h lib/mathlib.h lib/tokenize.h lib/errorlogger.h lib/suppressions.h lib/tokenlist.h lib/settings.h lib/library.h lib/standards.h lib/timer.h lib/symboldatabase.h lib/utils.h
+$(SRCDIR)/checkother.o: lib/checkother.cpp lib/cxx11emu.h lib/checkother.h lib/config.h lib/check.h lib/token.h lib/valueflow.h lib/mathlib.h lib/tokenize.h lib/errorlogger.h lib/suppressions.h lib/tokenlist.h lib/settings.h lib/library.h lib/standards.h lib/timer.h lib/astutils.h lib/symboldatabase.h lib/utils.h
 	$(CXX) ${INCLUDE_FOR_LIB} $(CPPFLAGS) $(CFG) $(CXXFLAGS) $(UNDEF_STRICT_ANSI) -std=c++0x -c -o $(SRCDIR)/checkother.o $(SRCDIR)/checkother.cpp
 
 $(SRCDIR)/checkpostfixoperator.o: lib/checkpostfixoperator.cpp lib/cxx11emu.h lib/checkpostfixoperator.h lib/config.h lib/check.h lib/token.h lib/valueflow.h lib/mathlib.h lib/tokenize.h lib/errorlogger.h lib/suppressions.h lib/tokenlist.h lib/settings.h lib/library.h lib/standards.h lib/timer.h lib/symboldatabase.h lib/utils.h
diff --git a/lib/astutils.cpp b/lib/astutils.cpp
new file mode 100644
index 000000000..ba37e36c8
--- /dev/null
+++ b/lib/astutils.cpp
@@ -0,0 +1,102 @@
+/*
+ * Cppcheck - A tool for static C/C++ code analysis
+ * Copyright (C) 2007-2015 Daniel Marjamäki and Cppcheck team.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+//---------------------------------------------------------------------------
+#include "astutils.h"
+
+bool astIsIntegral(const Token *tok, bool unknown)
+{
+    // TODO: handle arrays
+    if (tok->isNumber())
+        return MathLib::isInt(tok->str());
+
+    if (tok->isName()) {
+        if (tok->variable())
+            return tok->variable()->isIntegralType();
+
+        return unknown;
+    }
+    if (tok->str() == "(") {
+        // cast
+        if (Token::Match(tok, "( const| float|double )"))
+            return false;
+
+        // Function call
+        if (tok->previous()->function()) {
+            if (Token::Match(tok->previous()->function()->retDef, "float|double"))
+                return false;
+            else if (Token::Match(tok->previous()->function()->retDef, "bool|char|short|int|long"))
+                return true;
+        }
+
+        if (tok->strAt(-1) == "sizeof")
+            return true;
+
+        return unknown;
+    }
+
+    if (tok->astOperand2() && (tok->str() == "." || tok->str() == "::"))
+        return astIsIntegral(tok->astOperand2(), unknown);
+
+    if (tok->astOperand1() && tok->str() != "?")
+        return astIsIntegral(tok->astOperand1(), unknown);
+
+    return unknown;
+}
+
+bool astIsFloat(const Token *tok, bool unknown)
+{
+    // TODO: handle arrays
+    if (tok->isNumber())
+        return MathLib::isFloat(tok->str());
+
+    if (tok->isName()) {
+        if (tok->variable())
+            return tok->variable()->isFloatingType();
+
+        return unknown;
+    }
+    if (tok->str() == "(") {
+        // cast
+        if (Token::Match(tok, "( const| float|double )"))
+            return true;
+
+        // Function call
+        if (tok->previous()->function())
+            return Token::Match(tok->previous()->function()->retDef, "float|double");
+
+        if (tok->strAt(-1) == "sizeof")
+            return false;
+
+        return unknown;
+    }
+
+    if (tok->astOperand2() && (tok->str() == "." || tok->str() == "::"))
+        return astIsFloat(tok->astOperand2(), unknown);
+
+    if (tok->astOperand1() && tok->str() != "?" && astIsFloat(tok->astOperand1(), unknown))
+        return true;
+    if (tok->astOperand2() && astIsFloat(tok->astOperand2(), unknown))
+        return true;
+
+    if (tok->isOp())
+        return false;
+
+    return unknown;
+}
diff --git a/lib/astutils.h b/lib/astutils.h
new file mode 100644
index 000000000..aecbdb829
--- /dev/null
+++ b/lib/astutils.h
@@ -0,0 +1,33 @@
+/*
+ * Cppcheck - A tool for static C/C++ code analysis
+ * Copyright (C) 2007-2015 Daniel Marjamäki and Cppcheck team.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+//---------------------------------------------------------------------------
+#ifndef astutilsH
+#define astutilsH
+//---------------------------------------------------------------------------
+
+#include "symboldatabase.h"
+#include "token.h"
+
+/** Is expression of integral type? */
+bool astIsIntegral(const Token *tok, bool unknown);
+/** Is expression of floating point type? */
+bool astIsFloat(const Token *tok, bool unknown);
+
+#endif // astutilsH
diff --git a/lib/checkcondition.cpp b/lib/checkcondition.cpp
index b5b81ccb1..4da844e6f 100644
--- a/lib/checkcondition.cpp
+++ b/lib/checkcondition.cpp
@@ -21,6 +21,7 @@
 //---------------------------------------------------------------------------
 
 #include "checkcondition.h"
+#include "astutils.h"
 #include "checkother.h"
 #include "symboldatabase.h"
 
diff --git a/lib/checkother.cpp b/lib/checkother.cpp
index 51340ca74..c5da3c42a 100644
--- a/lib/checkother.cpp
+++ b/lib/checkother.cpp
@@ -19,6 +19,7 @@
 
 //---------------------------------------------------------------------------
 #include "checkother.h"
+#include "astutils.h"
 #include "mathlib.h"
 #include "symboldatabase.h"
 
@@ -32,86 +33,6 @@ namespace {
     CheckOther instance;
 }
 
-bool astIsIntegral(const Token *tok, bool unknown)
-{
-    // TODO: handle arrays
-    if (tok->isNumber())
-        return MathLib::isInt(tok->str());
-
-    if (tok->isName()) {
-        if (tok->variable())
-            return tok->variable()->isIntegralType();
-
-        return unknown;
-    }
-    if (tok->str() == "(") {
-        // cast
-        if (Token::Match(tok, "( const| float|double )"))
-            return false;
-
-        // Function call
-        if (tok->previous()->function()) {
-            if (Token::Match(tok->previous()->function()->retDef, "float|double"))
-                return false;
-            else if (Token::Match(tok->previous()->function()->retDef, "bool|char|short|int|long"))
-                return true;
-        }
-
-        if (tok->strAt(-1) == "sizeof")
-            return true;
-
-        return unknown;
-    }
-
-    if (tok->astOperand2() && (tok->str() == "." || tok->str() == "::"))
-        return astIsIntegral(tok->astOperand2(), unknown);
-
-    if (tok->astOperand1() && tok->str() != "?")
-        return astIsIntegral(tok->astOperand1(), unknown);
-
-    return unknown;
-}
-
-bool astIsFloat(const Token *tok, bool unknown)
-{
-    // TODO: handle arrays
-    if (tok->isNumber())
-        return MathLib::isFloat(tok->str());
-
-    if (tok->isName()) {
-        if (tok->variable())
-            return tok->variable()->isFloatingType();
-
-        return unknown;
-    }
-    if (tok->str() == "(") {
-        // cast
-        if (Token::Match(tok, "( const| float|double )"))
-            return true;
-
-        // Function call
-        if (tok->previous()->function())
-            return Token::Match(tok->previous()->function()->retDef, "float|double");
-
-        if (tok->strAt(-1) == "sizeof")
-            return false;
-
-        return unknown;
-    }
-
-    if (tok->astOperand2() && (tok->str() == "." || tok->str() == "::"))
-        return astIsFloat(tok->astOperand2(), unknown);
-
-    if (tok->astOperand1() && tok->str() != "?" && astIsFloat(tok->astOperand1(), unknown))
-        return true;
-    if (tok->astOperand2() && astIsFloat(tok->astOperand2(), unknown))
-        return true;
-
-    if (tok->isOp())
-        return false;
-
-    return unknown;
-}
 
 bool isConstExpression(const Token *tok, const std::set<std::string> &constFunctions)
 {
diff --git a/lib/checkother.h b/lib/checkother.h
index 488103d19..6fe208a52 100644
--- a/lib/checkother.h
+++ b/lib/checkother.h
@@ -35,10 +35,6 @@ bool isSameExpression(const Tokenizer *tokenizer, const Token *tok1, const Token
 
 bool isWithoutSideEffects(const Tokenizer *tokenizer, const Token* tok);
 
-/** Is expression of floating point type? */
-bool astIsFloat(const Token *tok, bool unknown);
-
-
 /// @addtogroup Checks
 /// @{
 
diff --git a/lib/lib.pri b/lib/lib.pri
index bd71969b9..5761f4bb1 100644
--- a/lib/lib.pri
+++ b/lib/lib.pri
@@ -6,6 +6,7 @@ include($$PWD/../externals/tinyxml/tinyxml.pri)
 BASEPATH = ../lib/
 INCLUDEPATH += ../externals/tinyxml
 HEADERS += $${BASEPATH}check.h \
+           $${BASEPATH}astutils.h \
            $${BASEPATH}check.h \
            $${BASEPATH}check64bit.h \
            $${BASEPATH}checkassert.h \
@@ -50,7 +51,8 @@ HEADERS += $${BASEPATH}check.h \
            $${BASEPATH}valueflow.h \
 
 
-SOURCES += $${BASEPATH}check.cpp \
+SOURCES += $${BASEPATH}astutils.cpp \
+           $${BASEPATH}check.cpp \
            $${BASEPATH}check64bit.cpp \
            $${BASEPATH}checkassert.cpp \
            $${BASEPATH}checkautovariables.cpp \