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Parse the decimal128 max significand at compile time #1480

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Merged
mborland merged 1 commit into from
Sep 30, 2026
Merged

Parse the decimal128 max significand at compile time #1480

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5 changes: 3 additions & 2 deletions include/boost/decimal/detail/attributes.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -89,8 +89,9 @@ BOOST_DECIMAL_CUDA_CONSTEXPR auto max_significand_v() noexcept
template <BOOST_DECIMAL_DECIMAL_FLOATING_TYPE DecimalType, std::enable_if_t<decimal_val_v<DecimalType> >= 128, bool> = true>
BOOST_DECIMAL_CUDA_CONSTEXPR auto max_significand_v() noexcept
{
// 34x 9s
return BOOST_DECIMAL_DETAIL_INT128_UINT128_C(9999999999999999999999999999999999);
// 34x 9s, constexpr so that a call at run time does not parse the literal
constexpr auto value {BOOST_DECIMAL_DETAIL_INT128_UINT128_C(9999999999999999999999999999999999)};
return value;
}

template <BOOST_DECIMAL_DECIMAL_FLOATING_TYPE DecimalType>
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