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diff --git a/vendor/bandit/bandit/assertion_frameworks/snowhouse/snowhouse/constraints/equalswithdeltaconstraint.h b/vendor/bandit/bandit/assertion_frameworks/snowhouse/snowhouse/constraints/equalswithdeltaconstraint.h
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+
+// Copyright Joakim Karlsson & Kim Gräsman 2010-2012.
+// Distributed under the Boost Software License, Version 1.0.
+// (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef IGLOO_EQUALSWITHDELTACONSTRAINT_H
+#define IGLOO_EQUALSWITHDELTACONSTRAINT_H
+
+#include "./expressions/expression.h"
+
+namespace snowhouse {
+
+ template< typename ExpectedType, typename DeltaType >
+ struct EqualsWithDeltaConstraint : Expression< EqualsWithDeltaConstraint<ExpectedType, DeltaType> >
+ {
+ EqualsWithDeltaConstraint(const ExpectedType& expected, const DeltaType& delta)
+ : m_expected(expected), m_delta(delta)
+ {
+ }
+
+ template<typename ActualType>
+ bool operator()(const ActualType& actual) const
+ {
+ return ((m_expected <= (actual + m_delta)) && (m_expected >= (actual - m_delta)));
+ }
+
+ ExpectedType m_expected;
+ DeltaType m_delta;
+ };
+
+ template< typename ExpectedType, typename DeltaType >
+ inline EqualsWithDeltaConstraint<ExpectedType, DeltaType> EqualsWithDelta(const ExpectedType& expected, const DeltaType& delta)
+ {
+ return EqualsWithDeltaConstraint<ExpectedType, DeltaType>(expected, delta);
+ }
+
+ template< typename ExpectedType, typename DeltaType >
+ struct Stringizer< EqualsWithDeltaConstraint< ExpectedType, DeltaType > >
+ {
+ static std::string ToString(const EqualsWithDeltaConstraint<ExpectedType, DeltaType>& constraint)
+ {
+ std::ostringstream builder;
+ builder << "equal to " << snowhouse::Stringize(constraint.m_expected) << " (+/- " << snowhouse::Stringize(constraint.m_delta) << ")";
+
+ return builder.str();
+ }
+ };
+}
+
+#endif