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Add eq and ne operators for compare utility. #863

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merged 4 commits into from
Mar 15, 2024
Merged

Add eq and ne operators for compare utility. #863

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aca7b1d
Add eq and ne operators
Mar 13, 2024
3208192
Add three-way comparison to compare utils.
Mar 15, 2024
fc19b12
Three-way comparison test now using own test data.
Mar 15, 2024
baf2eab
Rename test struct for three-way comparison test.
Mar 15, 2024
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12 changes: 11 additions & 1 deletion include/etl/compare.h
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Original file line number Diff line number Diff line change
Expand Up @@ -44,7 +44,7 @@ SOFTWARE.
namespace etl
{
//***************************************************************************
/// Defines <=, >, >= in terms of <
/// Defines <=, >, >=, ==, != in terms of <
/// Default
//***************************************************************************
template <typename T, typename TLess = etl::less<T> >
Expand Down Expand Up @@ -73,6 +73,16 @@ namespace etl
{
return !lt(lhs, rhs);
}

static result_type eq(first_argument_type lhs, second_argument_type rhs)
{
return gte(lhs, rhs) && lte(lhs, rhs);
}

static result_type ne(first_argument_type lhs, second_argument_type rhs)
{
return !eq(lhs, rhs);
}
};
}

Expand Down
34 changes: 34 additions & 0 deletions test/test_compare.cpp
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Expand Up @@ -70,6 +70,18 @@ namespace
return (lhs.a + lhs.b) >= (rhs.a + rhs.b);
}

//***********************************
bool operator ==(const Test& lhs, const Test& rhs)
{
return (lhs.a + lhs.b) == (rhs.a + rhs.b);
}

//***********************************
bool operator !=(const Test& lhs, const Test& rhs)
{
return (lhs.a + lhs.b) != (rhs.a + rhs.b);
}

//***********************************
struct LessTest
{
Expand Down Expand Up @@ -126,5 +138,27 @@ namespace
CHECK_EQUAL(tb >= ta, (CompareTest::gte(tb, ta)));
CHECK_EQUAL(ta >= ta, (CompareTest::gte(ta, ta)));
}

//*************************************************************************
TEST(test_eq)
{
CHECK_EQUAL(a == b, (CompareInt::eq(a, b)));
CHECK_EQUAL(b == a, (CompareInt::eq(b, a)));
CHECK_EQUAL(a == a, (CompareInt::eq(a, a)));
CHECK_EQUAL(ta == tb, (CompareTest::eq(ta, tb)));
CHECK_EQUAL(tb == ta, (CompareTest::eq(tb, ta)));
CHECK_EQUAL(ta == ta, (CompareTest::eq(ta, ta)));
}

//*************************************************************************
TEST(test_ne)
{
CHECK_EQUAL(a != b, (CompareInt::ne(a, b)));
CHECK_EQUAL(b != a, (CompareInt::ne(b, a)));
CHECK_EQUAL(a != a, (CompareInt::ne(a, a)));
CHECK_EQUAL(ta != tb, (CompareTest::ne(ta, tb)));
CHECK_EQUAL(tb != ta, (CompareTest::ne(tb, ta)));
CHECK_EQUAL(ta != ta, (CompareTest::ne(ta, ta)));
}
};
}