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Minor changes to quaternions docs and purepart implementation
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,70 @@ | ||
| //================================================================================================== | ||
| /* | ||
| EVE - Expressive Vector Engine | ||
| Copyright : EVE Project Contributors | ||
| SPDX-License-Identifier: BSL-1.0 | ||
| */ | ||
| //================================================================================================== | ||
| #pragma once | ||
|
|
||
| #include <eve/detail/overload.hpp> | ||
|
|
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| namespace eve | ||
| { | ||
| //================================================================================================ | ||
| //! @addtogroup quaternion | ||
| //! @{ | ||
| //! @var purepart | ||
| //! | ||
| //! @brief Callable object computing purepart part of values. | ||
| //! | ||
| //! **Defined in header** `#include <eve/module/quaternion.hpp>` | ||
| //! | ||
| //! #### Members Functions | ||
| //! | ||
| //! | Member | Effect | | ||
| //! |:-------------|:-----------------------------------------------------------| | ||
| //! | `operator()` | the computation of purepart part | | ||
| //! | ||
| //! --- | ||
| //! | ||
| //! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~{.cpp} | ||
| //! auto operator()(value auto x) const noexcept; | ||
| //! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | ||
| //! | ||
| //! **Parameters** | ||
| //! | ||
| //!`x`: [value](@ref eve::value). | ||
| //! | ||
| //! **Return value** | ||
| //! 0 if `x` is real, imag(x) if x is an instance of eve::complex, | ||
| //! or the purepart (second component) of `x` | ||
| //! if x is an instance of eve::quaternion. | ||
| //! | ||
| //! #### Example | ||
| //! | ||
| //! @godbolt{doc/quaternion/regular/purepart.cpp} | ||
| //! | ||
| //! @} | ||
| //================================================================================================ | ||
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| namespace tag { struct purepart_; } | ||
| template<> struct supports_conditional<tag::purepart_> : std::false_type {}; | ||
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| EVE_MAKE_CALLABLE(purepart_, purepart); | ||
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| namespace detail | ||
| { | ||
| template<value V> | ||
| EVE_FORCEINLINE auto purepart_( EVE_SUPPORTS(cpu_), V const& ) noexcept | ||
| { | ||
| return std::array<V, 3>{0, 0, 0}; | ||
| } | ||
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| template<value V> | ||
| EVE_FORCEINLINE auto purepart_( EVE_SUPPORTS(cpu_), eve::complex<V> const & z) noexcept | ||
| { | ||
| return std::array<V, 3>{imag(z), 0, 0}; | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,48 @@ | ||
| //================================================================================================== | ||
| /** | ||
| EVE - Expressive Vector Engine | ||
| Copyright : EVE Project Contributors | ||
| SPDX-License-Identifier: BSL-1.0 | ||
| **/ | ||
| //================================================================================================== | ||
| #include "test.hpp" | ||
| #include <eve/module/quaternion.hpp> | ||
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| TTS_CASE_WITH( "Check behavior of purepart on scalar" | ||
| , tts::bunch<eve::test::scalar::ieee_reals> | ||
| , tts::generate ( tts::randoms(eve::valmin, eve::valmax) | ||
| , tts::randoms(eve::valmin, eve::valmax) | ||
| , tts::randoms(eve::valmin, eve::valmax) | ||
| , tts::randoms(eve::valmin, eve::valmax) | ||
| ) | ||
| ) | ||
| <typename T>(T const& a0, T const& a1, T const& a2, T const& a3) | ||
| { | ||
| using e_t = typename T::value_type; | ||
| for(size_t i = 0; i < a0.size(); ++i) | ||
| { | ||
| auto a = eve::purepart(eve::quaternion<e_t>(a0[i],a1[i],a2[i],a3[i])); | ||
| TTS_EQUAL( a1[i], get<0>(a) ); | ||
| TTS_EQUAL( a2[i], get<1>(a) ); | ||
| TTS_EQUAL( a3[i], get<2>(a) ); | ||
| } | ||
| }; | ||
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| TTS_CASE_WITH( "Check behavior of purepart on wide" | ||
| , eve::test::simd::ieee_reals | ||
| , tts::generate ( tts::randoms(eve::valmin, eve::valmax) | ||
| , tts::randoms(eve::valmin, eve::valmax) | ||
| , tts::randoms(eve::valmin, eve::valmax) | ||
| , tts::randoms(eve::valmin, eve::valmax) | ||
| ) | ||
| ) | ||
| <typename T>(T const& a0, T const& a1, T const& a2, T const& a3 ) | ||
| { | ||
| using e_t = typename T::value_type; | ||
| using z_t = eve::wide<eve::quaternion<e_t>, typename T::cardinal_type>; | ||
|
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| auto a = eve::purepart(z_t(a0,a1,a2,a3)); | ||
| TTS_EQUAL( a1, get<0>(a)); | ||
| TTS_EQUAL( a2, get<1>(a)); | ||
| TTS_EQUAL( a3, get<2>(a)); | ||
| }; |