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Feat: Floor (#309)

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* feat: first draft floor

* apply review feedback and move to desired files

* implement floor considering float types

* reduce code duplication

* apply review feedback and improve docstring

* enable static floor tests for gcc only

* Use recommended feature-test macro

* add floor runtime unittests

* apply review feedback

* make lambda const
This commit is contained in:
Markus Hofbauer
2021-11-13 12:17:43 +01:00
committed by GitHub
parent 331024a199
commit e82bfa23a5
3 changed files with 107 additions and 5 deletions
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test/unit_test/static/math_test.cpp
+24
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@@ -25,6 +25,7 @@
#include <units/isq/si/length.h>
#include <units/isq/si/area.h>
#include <units/isq/si/volume.h>
#include <units/isq/si/time.h>
#include <units/isq/si/international/length.h>
#include <units/isq/si/international/area.h>
#include <units/isq/si/international/volume.h>
@@ -32,6 +33,7 @@
namespace {
using namespace units;
using namespace units::isq;
using namespace units::isq::si::literals;
using namespace units::isq::si::international::literals;
@@ -55,4 +57,26 @@ static_assert(compare<decltype(pow<1, 4>(4_q_m2)), decltype(sqrt(2_q_m))>);
static_assert(compare<decltype(pow<1, 4>(4_q_km2)), decltype(sqrt(2_q_km))>);
static_assert(compare<decltype(pow<1, 4>(4_q_ft2)), decltype(sqrt(2_q_ft))>);
#if __cpp_lib_constexpr_cmath // TODO remove once std::floor is constexpr for all compilers
// floor
// integral types
static_assert(compare<decltype(floor<si::second>(1_q_s)), decltype(1_q_s)>);
static_assert(compare<decltype(floor<si::second>(1000_q_ms)), decltype(1_q_s)>);
static_assert(compare<decltype(floor<si::second>(1001_q_ms)), decltype(1_q_s)>);
static_assert(compare<decltype(floor<si::second>(1999_q_ms)), decltype(1_q_s)>);
static_assert(compare<decltype(floor<si::second>(-1000_q_ms)), decltype(-1_q_s)>);
static_assert(compare<decltype(floor<si::second>(-999_q_ms)), decltype(-1_q_s)>);
// floating-point
static_assert(floor<si::second>(1.3_q_s) == 1_q_s);
static_assert(floor<si::second>(-1.3_q_s) == -2_q_s);
// static_assert(floor<si::second>(1000._q_ms) == 1_q_s); // does not work due to a bug in fpow10() see #311
static_assert(floor<si::second>(1001._q_ms) == 1_q_s);
static_assert(floor<si::second>(1999._q_ms) == 1_q_s);
static_assert(floor<si::second>(-1000._q_ms) == -1_q_s);
static_assert(floor<si::second>(-999._q_ms) == -1_q_s);
#endif
} // namespace