random: Add uniform_on_sphere_distribution definition.
2014-07-12 Ulrich Drepper <drepper@gmail.com> * include/ext/random: Add uniform_on_sphere_distribution definition. * include/ext/random.tcc: Add out-of-band member function definitions for uniform_on_sphere_distribution. * testsuite/ext/random/uniform_on_sphere_distribution/ cons/default.cc: New file. * testsuite/ext/random/uniform_on_sphere_distribution/ operators/equal.cc: New file. * testsuite/ext/random/uniform_on_sphere_distribution/ operators/inequal.cc: New file. * testsuite/ext/random/uniform_on_sphere_distribution/ operators/serialize.cc: New file. From-SVN: r212492
This commit is contained in:
Ulrich Drepper
parent
4a05a9a8d2
commit
863a2c7ecc
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@ -1,3 +1,17 @@
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2014-07-12 Ulrich Drepper <drepper@gmail.com>
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* include/ext/random: Add uniform_on_sphere_distribution definition.
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* include/ext/random.tcc: Add out-of-band member function definitions
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for uniform_on_sphere_distribution.
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* testsuite/ext/random/uniform_on_sphere_distribution/
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cons/default.cc: New file.
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* testsuite/ext/random/uniform_on_sphere_distribution/
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operators/equal.cc: New file.
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* testsuite/ext/random/uniform_on_sphere_distribution/
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operators/inequal.cc: New file.
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* testsuite/ext/random/uniform_on_sphere_distribution/
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operators/serialize.cc: New file.
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2014-07-11 Edward Smith-Rowland <3dw4rd@verizon.net>
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Add the logistic_distribution as an extension.
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@ -94,7 +108,7 @@
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Revert:
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2014-06-18 Paolo Carlini <paolo.carlini@oracle.com>
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Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>
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Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>
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PR libstdc++/61536
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* config/abi/pre/gnu.ver: Adjust for out of line comparisons.
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@ -159,7 +173,7 @@
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* include/std/chrono (_Checked_integral_constant): Allow zero.
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* testsuite/20_util/duration/literals/values.cc: Test non-positive
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values and digit separators.
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* include/experimental/any
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* include/experimental/any
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PR libstdc++/61532
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* testsuite/20_util/make_signed/requirements/typedefs-1.cc: Do not
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@ -541,10 +555,10 @@
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2014-05-20 Cesar Philippidis <cesar@codesourcery.com>
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* scripts/testsuite_flags.in (cxxflags): Remove @CXXFLAGS@ since
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* scripts/testsuite_flags.in (cxxflags): Remove @CXXFLAGS@ since
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libstdc++.exp imports those flags via getenv.
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* testsuite/lib/libstdc++.exp (libstdc++_init): Ensure that
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CXXFLAGS contains a '-O' flag.
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* testsuite/lib/libstdc++.exp (libstdc++_init): Ensure that
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CXXFLAGS contains a '-O' flag.
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2014-05-20 Alexey Merzlyakov <alexey.merzlyakov@samsung.com>
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@ -36,6 +36,7 @@
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#else
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#include <random>
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#include <algorithm>
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#include <array>
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#include <ext/cmath>
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#ifdef __SSE2__
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@ -2962,7 +2963,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
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{
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using _IntType = typename std::make_signed<result_type>::type;
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return static_cast<result_type>(std::max(static_cast<_IntType>(0),
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static_cast<_IntType>(this->total_draws()
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static_cast<_IntType>(this->total_draws()
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- this->unsuccessful_size())));
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}
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@ -3033,7 +3034,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
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friend std::basic_ostream<_CharT, _Traits>&
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operator<<(std::basic_ostream<_CharT, _Traits>& __os,
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const __gnu_cxx::hypergeometric_distribution<_UIntType1>&
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__x);
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__x);
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/**
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* @brief Extracts a %hypergeometric_distribution random number
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@ -3127,7 +3128,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
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friend bool
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operator==(const param_type& __p1, const param_type& __p2)
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{ return __p1._M_a == __p2._M_a
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&& __p1._M_b == __p2._M_b; }
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&& __p1._M_b == __p2._M_b; }
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private:
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void _M_initialize();
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@ -3238,10 +3239,10 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
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* be generated are equal.
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*/
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template<typename _RealType1>
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friend bool
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operator==(const logistic_distribution<_RealType1>& __d1,
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friend bool
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operator==(const logistic_distribution<_RealType1>& __d1,
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const logistic_distribution<_RealType1>& __d2)
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{ return __d1.param() == __d2.param(); }
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{ return __d1.param() == __d2.param(); }
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/**
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* @brief Inserts a %logistic_distribution random number distribution
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@ -3293,6 +3294,196 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
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const logistic_distribution<_RealType1>& __d2)
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{ return !(__d1 == __d2); }
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/**
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* @brief A distribution for random coordinates on a unit sphere.
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*
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* The method used in the generation function is attributed by Donald Knuth
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* to G. W. Brown, Modern Mathematics for the Engineer (1956).
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*/
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template<std::size_t _Dimen, typename _RealType = double>
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class uniform_on_sphere_distribution
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{
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static_assert(std::is_floating_point<_RealType>::value,
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"template argument not a floating point type");
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static_assert(_Dimen != 0, "dimension is zero");
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public:
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/** The type of the range of the distribution. */
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typedef std::array<_RealType, _Dimen> result_type;
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/** Parameter type. */
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struct param_type
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{
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explicit
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param_type()
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{ }
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friend bool
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operator==(const param_type& __p1, const param_type& __p2)
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{ return true; }
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};
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/**
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* @brief Constructs a uniform on sphere distribution.
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*/
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explicit
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uniform_on_sphere_distribution()
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: _M_param(), _M_n(_RealType(0), _RealType(1))
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{ }
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explicit
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uniform_on_sphere_distribution(const param_type& __p)
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: _M_param(__p), _M_n(_RealType(0), _RealType(1))
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{ }
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/**
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* @brief Resets the distribution state.
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*/
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void
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reset()
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{ }
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/**
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* @brief Returns the parameter set of the distribution.
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*/
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param_type
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param() const
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{ return _M_param; }
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/**
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* @brief Sets the parameter set of the distribution.
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* @param __param The new parameter set of the distribution.
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*/
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void
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param(const param_type& __param)
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{ _M_param = __param; }
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/**
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* @brief Returns the greatest lower bound value of the distribution.
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* This function makes no sense for this distribution.
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*/
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result_type
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min() const
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{
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result_type __res;
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__res.fill(0);
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return __res;
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}
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/**
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* @brief Returns the least upper bound value of the distribution.
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* This function makes no sense for this distribution.
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*/
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result_type
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max() const
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{
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result_type __res;
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__res.fill(0);
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return __res;
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}
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/**
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* @brief Generating functions.
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*/
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template<typename _UniformRandomNumberGenerator>
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result_type
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operator()(_UniformRandomNumberGenerator& __urng)
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{ return this->operator()(__urng, _M_param); }
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template<typename _UniformRandomNumberGenerator>
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result_type
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operator()(_UniformRandomNumberGenerator& __urng,
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const param_type& __p);
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template<typename _ForwardIterator,
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typename _UniformRandomNumberGenerator>
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void
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__generate(_ForwardIterator __f, _ForwardIterator __t,
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_UniformRandomNumberGenerator& __urng)
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{ this->__generate(__f, __t, __urng, this->param()); }
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template<typename _ForwardIterator,
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typename _UniformRandomNumberGenerator>
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void
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__generate(_ForwardIterator __f, _ForwardIterator __t,
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_UniformRandomNumberGenerator& __urng,
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const param_type& __p)
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{ this->__generate_impl(__f, __t, __urng, __p); }
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template<typename _UniformRandomNumberGenerator>
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void
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__generate(result_type* __f, result_type* __t,
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_UniformRandomNumberGenerator& __urng,
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const param_type& __p)
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{ this->__generate_impl(__f, __t, __urng, __p); }
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/**
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* @brief Return true if two uniform on sphere distributions have
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* the same parameters and the sequences that would be
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* generated are equal.
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*/
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friend bool
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operator==(const uniform_on_sphere_distribution& __d1,
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const uniform_on_sphere_distribution& __d2)
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{ return true; }
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/**
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* @brief Inserts a %uniform_on_sphere_distribution random number distribution
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* @p __x into the output stream @p __os.
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*
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* @param __os An output stream.
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* @param __x A %uniform_on_sphere_distribution random number distribution.
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*
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* @returns The output stream with the state of @p __x inserted or in
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* an error state.
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*/
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template<size_t _Dimen1, typename _RealType1, typename _CharT,
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typename _Traits>
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friend std::basic_ostream<_CharT, _Traits>&
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operator<<(std::basic_ostream<_CharT, _Traits>& __os,
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const __gnu_cxx::uniform_on_sphere_distribution<_Dimen1,
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_RealType1>&
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__x);
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/**
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* @brief Extracts a %uniform_on_sphere_distribution random number distribution
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* @p __x from the input stream @p __is.
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*
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* @param __is An input stream.
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* @param __x A %uniform_on_sphere_distribution random number generator engine.
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*
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* @returns The input stream with @p __x extracted or in an error state.
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*/
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template<std::size_t _Dimen1, typename _RealType1, typename _CharT,
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typename _Traits>
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friend std::basic_istream<_CharT, _Traits>&
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operator>>(std::basic_istream<_CharT, _Traits>& __is,
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__gnu_cxx::uniform_on_sphere_distribution<_Dimen1,
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_RealType1>& __x);
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private:
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template<typename _ForwardIterator,
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typename _UniformRandomNumberGenerator>
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void
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__generate_impl(_ForwardIterator __f, _ForwardIterator __t,
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_UniformRandomNumberGenerator& __urng,
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const param_type& __p);
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param_type _M_param;
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std::normal_distribution<_RealType> _M_n;
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};
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/**
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* @brief Return true if two uniform on sphere distributions are different.
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*/
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template<std::size_t _Dimen, typename _RealType>
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inline bool
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operator!=(const __gnu_cxx::uniform_on_sphere_distribution<_Dimen,
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_RealType>& __d1,
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const __gnu_cxx::uniform_on_sphere_distribution<_Dimen,
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_RealType>& __d2)
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{ return false; }
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_GLIBCXX_END_NAMESPACE_VERSION
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} // namespace __gnu_cxx
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@ -1362,7 +1362,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
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result_type __b = __param.total_size();
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result_type __k = 0;
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if (__param.total_draws() < __param.total_size() / 2)
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if (__param.total_draws() < __param.total_size() / 2)
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{
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for (result_type __i = 0; __i < __param.total_draws(); ++__i)
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{
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@ -1539,6 +1539,65 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
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return __is;
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}
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template<std::size_t _Dimen, typename _RealType>
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template<typename _UniformRandomNumberGenerator>
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typename uniform_on_sphere_distribution<_Dimen, _RealType>::result_type
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uniform_on_sphere_distribution<_Dimen, _RealType>::
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operator()(_UniformRandomNumberGenerator& __urng,
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const param_type& __p)
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{
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result_type __ret;
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_RealType __sum = _RealType(0);
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std::generate(__ret.begin(), __ret.end(),
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[&__urng, &__sum, this](){ _RealType __t = _M_n(__urng);
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__sum += __t * __t;
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return __t; });
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auto __norm = std::sqrt(__sum);
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std::transform(__ret.begin(), __ret.end(), __ret.begin(),
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[__norm](_RealType __val){ return __val / __norm; });
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return __ret;
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}
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template<std::size_t _Dimen, typename _RealType>
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template<typename _OutputIterator,
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typename _UniformRandomNumberGenerator>
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void
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uniform_on_sphere_distribution<_Dimen, _RealType>::
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__generate_impl(_OutputIterator __f, _OutputIterator __t,
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_UniformRandomNumberGenerator& __urng,
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const param_type& __param)
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{
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__glibcxx_function_requires(_OutputIteratorConcept<_OutputIterator>)
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while (__f != __t)
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*__f++ = this->operator()(__urng, __param);
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}
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template<std::size_t _Dimen, typename _RealType, typename _CharT,
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typename _Traits>
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std::basic_ostream<_CharT, _Traits>&
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operator<<(std::basic_ostream<_CharT, _Traits>& __os,
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const __gnu_cxx::uniform_on_sphere_distribution<_Dimen,
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_RealType>& __x)
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{
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// The distribution has no state, nothing to save.
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return __os;
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}
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template<std::size_t _Dimen, typename _RealType, typename _CharT,
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typename _Traits>
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std::basic_istream<_CharT, _Traits>&
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operator>>(std::basic_istream<_CharT, _Traits>& __is,
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__gnu_cxx::uniform_on_sphere_distribution<_Dimen,
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_RealType>& __x)
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{
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// The distribution has no state, nothing to restore.
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return __is;
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}
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_GLIBCXX_END_NAMESPACE_VERSION
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} // namespace
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|
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@ -0,0 +1,45 @@
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// { dg-options "-std=gnu++11" }
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// { dg-require-cstdint "" }
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//
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// 2014-04-15 Ulrich Drepper <drepper@gmail.com>
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//
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// Copyright (C) 2014 Free Software Foundation, Inc.
|
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//
|
||||
// This file is part of the GNU ISO C++ Library. This library is free
|
||||
// software; you can redistribute it and/or modify it under the
|
||||
// terms of the GNU General Public License as published by the
|
||||
// Free Software Foundation; either version 3, or (at your option)
|
||||
// any later version.
|
||||
//
|
||||
// This library is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU General Public License for more details.
|
||||
//
|
||||
// You should have received a copy of the GNU General Public License along
|
||||
// with this library; see the file COPYING3. If not see
|
||||
// <http://www.gnu.org/licenses/>.
|
||||
|
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// 26.4.8.3.* Class template uniform_in_sphere [rand.dist.ext.uniform_on_sphere]
|
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// 26.4.2.4 Concept RandomNumberDistribution [rand.concept.dist]
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#include <ext/random>
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#include <testsuite_hooks.h>
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void
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test01()
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{
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bool test [[gnu::unused]] = true;
|
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__gnu_cxx::uniform_on_sphere_distribution<2> u2;
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__gnu_cxx::uniform_on_sphere_distribution<3> u3;
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__gnu_cxx::uniform_on_sphere_distribution<4, double> u4;
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__gnu_cxx::uniform_on_sphere_distribution<5, float> u5;
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}
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||||
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||||
int
|
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main()
|
||||
{
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||||
test01();
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return 0;
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||||
}
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|
|
@ -0,0 +1,43 @@
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// { dg-options "-std=gnu++11" }
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// { dg-require-cstdint "" }
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//
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// 2014-04-15 Ulrich Drepper <drepper@gmail.com>
|
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//
|
||||
// Copyright (C) 2014 Free Software Foundation, Inc.
|
||||
//
|
||||
// This file is part of the GNU ISO C++ Library. This library is free
|
||||
// software; you can redistribute it and/or modify it under the
|
||||
// terms of the GNU General Public License as published by the
|
||||
// Free Software Foundation; either version 3, or (at your option)
|
||||
// any later version.
|
||||
//
|
||||
// This library is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU General Public License for more details.
|
||||
//
|
||||
// You should have received a copy of the GNU General Public License along
|
||||
// with this library; see the file COPYING3. If not see
|
||||
// <http://www.gnu.org/licenses/>.
|
||||
|
||||
// 26.5.8.4.5 Class template uniform_on_sphere_distribution [rand.dist.ext.uniform_on_sphere]
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#include <ext/random>
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#include <testsuite_hooks.h>
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|
||||
void
|
||||
test01()
|
||||
{
|
||||
bool test [[gnu::unused]] = true;
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__gnu_cxx::uniform_on_sphere_distribution<3> u, v;
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VERIFY( u == v );
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||||
}
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int
|
||||
main()
|
||||
{
|
||||
test01();
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -0,0 +1,43 @@
|
|||
// { dg-options "-std=gnu++11" }
|
||||
// { dg-require-cstdint "" }
|
||||
//
|
||||
// 2014-04-15 Ulrich Drepper <drepper@gmail.com>
|
||||
//
|
||||
// Copyright (C) 2014 Free Software Foundation, Inc.
|
||||
//
|
||||
// This file is part of the GNU ISO C++ Library. This library is free
|
||||
// software; you can redistribute it and/or modify it under the
|
||||
// terms of the GNU General Public License as published by the
|
||||
// Free Software Foundation; either version 3, or (at your option)
|
||||
// any later version.
|
||||
//
|
||||
// This library is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU General Public License for more details.
|
||||
//
|
||||
// You should have received a copy of the GNU General Public License along
|
||||
// with this library; see the file COPYING3. If not see
|
||||
// <http://www.gnu.org/licenses/>.
|
||||
|
||||
// 26.5.8.4.5 Class template uniform_on_sphere_distribution [rand.dist.ext.uniform_on_sphere]
|
||||
|
||||
#include <ext/random>
|
||||
#include <testsuite_hooks.h>
|
||||
|
||||
void
|
||||
test01()
|
||||
{
|
||||
bool test [[gnu::unused]] = true;
|
||||
|
||||
__gnu_cxx::uniform_on_sphere_distribution<3> u, v;
|
||||
|
||||
VERIFY( !(u != v) );
|
||||
}
|
||||
|
||||
int
|
||||
main()
|
||||
{
|
||||
test01();
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -0,0 +1,50 @@
|
|||
// { dg-options "-std=gnu++11" }
|
||||
// { dg-require-cstdint "" }
|
||||
//
|
||||
// 2014-04-15 Ulrich Drepper <drepper@gmail.com>
|
||||
//
|
||||
// Copyright (C) 2014 Free Software Foundation, Inc.
|
||||
//
|
||||
// This file is part of the GNU ISO C++ Library. This library is free
|
||||
// software; you can redistribute it and/or modify it under the
|
||||
// terms of the GNU General Public License as published by the
|
||||
// Free Software Foundation; either version 3, or (at your option)
|
||||
// any later version.
|
||||
//
|
||||
// This library is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU General Public License for more details.
|
||||
//
|
||||
// You should have received a copy of the GNU General Public License along
|
||||
// with this library; see the file COPYING3. If not see
|
||||
// <http://www.gnu.org/licenses/>.
|
||||
|
||||
// 26.4.8.3.* Class template uniform_on_sphere_distribution [rand.dist.ext.uniform_on_sphere]
|
||||
// 26.4.2.4 Concept RandomNumberDistribution [rand.concept.dist]
|
||||
|
||||
#include <ext/random>
|
||||
#include <sstream>
|
||||
#include <testsuite_hooks.h>
|
||||
|
||||
void
|
||||
test01()
|
||||
{
|
||||
bool test [[gnu::unused]] = true;
|
||||
|
||||
std::stringstream str;
|
||||
__gnu_cxx::uniform_on_sphere_distribution<3> u, v;
|
||||
std::minstd_rand0 rng;
|
||||
|
||||
u(rng); // advance
|
||||
str << u;
|
||||
|
||||
str >> v;
|
||||
}
|
||||
|
||||
int
|
||||
main()
|
||||
{
|
||||
test01();
|
||||
return 0;
|
||||
}
|
||||
Loading…
Reference in New Issue