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Coverage: last few lines of next.hpp.

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jzmaddock
2025-05-07 12:12:59 +01:00
parent 01e1a62e0b
commit 295c5a37f5
2 changed files with 8 additions and 2 deletions
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4
include/boost/math/special_functions/next.hpp
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@@ -844,8 +844,8 @@ T float_advance_imp(T val, int distance, const std::false_type&, const Policy& p
}
else
{
limit *= std::numeric_limits<T>::radix;
expon++;
limit *= std::numeric_limits<T>::radix; // LCOV_EXCL_LINE Probably unreachable for the decimal types we have?
expon++; // LCOV_EXCL_LINE
}
limit_distance = float_distance(val, limit);
if(distance && (limit_distance == 0))

6
test/test_next.cpp
View File

@@ -193,11 +193,17 @@ void test_values(const T& val, const char* name)
{
BOOST_MATH_CHECK_THROW(boost::math::float_prior(-(std::numeric_limits<T>::max)()), std::overflow_error);
BOOST_MATH_CHECK_THROW(boost::math::float_next((std::numeric_limits<T>::max)()), std::overflow_error);
BOOST_MATH_CHECK_THROW(boost::math::float_advance(std::numeric_limits<T>::infinity(), 2), std::domain_error);
BOOST_MATH_CHECK_THROW(boost::math::float_advance(-std::numeric_limits<T>::infinity(), 2), std::domain_error);
BOOST_MATH_CHECK_THROW(boost::math::float_advance(std::numeric_limits<T>::infinity(), -2), std::domain_error);
BOOST_MATH_CHECK_THROW(boost::math::float_advance(-std::numeric_limits<T>::infinity(), -2), std::domain_error);
}
else
{
BOOST_CHECK_EQUAL(boost::math::float_prior(-(std::numeric_limits<T>::max)()), -std::numeric_limits<T>::infinity());
BOOST_CHECK_EQUAL(boost::math::float_next((std::numeric_limits<T>::max)()), std::numeric_limits<T>::infinity());
BOOST_CHECK((boost::math::isnan)(boost::math::float_advance(std::numeric_limits<T>::quiet_NaN(), 2)));
BOOST_CHECK((boost::math::isnan)(boost::math::float_advance(std::numeric_limits<T>::quiet_NaN(), -2)));
}
}
BOOST_IF_CONSTEXPR(std::numeric_limits<T>::is_specialized && (std::numeric_limits<T>::has_quiet_NaN))