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Work around for a NVCC compiler bug

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The NVCC compiler fails to compile the date library due
to a compiler bug which causes it to emit an error when
directly using std::ratio_{multiply,divide} in the template
instantiations for std::duration. This PR works around the
issue by introducing custom ratio_{multiply,divide} which
delegate to the standard library templates
This commit is contained in:
Lakshay Garg 2019-11-20 11:02:52 -08:00 committed by Howard Hinnant
parent 3e376be2e9
commit 018a50bcd0
7 changed files with 33 additions and 22 deletions
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19
include/date/date.h
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@ -158,6 +158,17 @@ namespace date
# undef sun
#endif
// Work around for a NVCC compiler bug which causes it to fail
// to compile std::ratio_{multiply,divide} when used directly
// in the std::chrono::duration template instantiations below
namespace detail {
template <typename R1, typename R2>
using ratio_multiply = decltype(std::ratio_multiply<R1, R2>{});
template <typename R1, typename R2>
using ratio_divide = decltype(std::ratio_divide<R1, R2>{});
} // namespace detail
//-----------+
// Interface |
//-----------+
@ -165,16 +176,16 @@ namespace date
// durations
using days = std::chrono::duration
<int, std::ratio_multiply<std::ratio<24>, std::chrono::hours::period>::type>;
<int, detail::ratio_multiply<std::ratio<24>, std::chrono::hours::period>>;
using weeks = std::chrono::duration
<int, std::ratio_multiply<std::ratio<7>, days::period>::type>;
<int, detail::ratio_multiply<std::ratio<7>, days::period>>;
using years = std::chrono::duration
<int, std::ratio_multiply<std::ratio<146097, 400>, days::period>::type>;
<int, detail::ratio_multiply<std::ratio<146097, 400>, days::period>>;
using months = std::chrono::duration
<int, std::ratio_divide<years::period, std::ratio<12>>::type>;
<int, detail::ratio_divide<years::period, std::ratio<12>>>;
// time_point

4
include/date/islamic.h
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@ -39,10 +39,10 @@ using days = date::days;
using weeks = date::weeks;
using years = std::chrono::duration
<int, std::ratio_multiply<std::ratio<10631, 30>, days::period>>;
<int, date::detail::ratio_multiply<std::ratio<10631, 30>, days::period>>;
using months = std::chrono::duration
<int, std::ratio_divide<years::period, std::ratio<12>>>;
<int, date::detail::ratio_divide<years::period, std::ratio<12>>>;
// time_point

4
include/date/julian.h
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@ -39,10 +39,10 @@ using days = date::days;
using weeks = date::weeks;
using years = std::chrono::duration
<int, std::ratio_multiply<std::ratio<1461, 4>, days::period>>;
<int, date::detail::ratio_multiply<std::ratio<1461, 4>, days::period>>;
using months = std::chrono::duration
<int, std::ratio_divide<years::period, std::ratio<12>>>;
<int, date::detail::ratio_divide<years::period, std::ratio<12>>>;
// time_point

8
test/date_test/detail/decimal_format_seconds.pass.cpp
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@ -55,12 +55,12 @@
#include <type_traits>
using fortnights = std::chrono::duration<date::weeks::rep,
std::ratio_multiply<std::ratio<2>,
date::weeks::period>>;
date::detail::ratio_multiply<std::ratio<2>,
date::weeks::period>>;
using microfortnights = std::chrono::duration<std::int64_t,
std::ratio_multiply<fortnights::period,
std::micro>>;
date::detail::ratio_multiply<fortnights::period,
std::micro>>;
int
main()

8
test/date_test/format/range.pass.cpp
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@ -27,12 +27,12 @@
#include <type_traits>
using fortnights = std::chrono::duration<date::weeks::rep,
std::ratio_multiply<std::ratio<2>,
date::weeks::period>>;
date::detail::ratio_multiply<std::ratio<2>,
date::weeks::period>>;
using microfortnights = std::chrono::duration<std::int64_t,
std::ratio_multiply<fortnights::period,
std::micro>>;
date::detail::ratio_multiply<fortnights::period,
std::micro>>;
int
main()

4
test/date_test/multi_year_duration_addition.pass.cpp
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@ -72,8 +72,8 @@ main()
using namespace date;
using namespace std::chrono;
using decades = duration<int, std::ratio_multiply<std::ratio<10>, years::period>>;
using decamonths = duration<int, std::ratio_multiply<std::ratio<10>, months::period>>;
using decades = duration<int, date::detail::ratio_multiply<std::ratio<10>, years::period>>;
using decamonths = duration<int, date::detail::ratio_multiply<std::ratio<10>, months::period>>;
constexpr months one_month{1};
constexpr years one_year{1};

8
test/date_test/time_of_day_microfortnights.pass.cpp
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@ -57,12 +57,12 @@
#include <type_traits>
using fortnights = std::chrono::duration<date::weeks::rep,
std::ratio_multiply<std::ratio<2>,
date::weeks::period>>;
date::detail::ratio_multiply<std::ratio<2>,
date::weeks::period>>;
using microfortnights = std::chrono::duration<std::int64_t,
std::ratio_multiply<fortnights::period,
std::micro>>;
date::detail::ratio_multiply<fortnights::period,
std::micro>>;
int
main()