148 changes: 148 additions & 0 deletions libcxx/test/std/numerics/bit/bit.pow.two/ceil2.pass.cpp
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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03, c++11, c++14, c++17

// template <class T>
// constexpr T ceil2(T x) noexcept;

// Returns: The minimal value y such that ispow2(y) is true and y >= x;
// if y is not representable as a value of type T, the result is an unspecified value.
// Remarks: This function shall not participate in overload resolution unless
// T is an unsigned integer type

#include <bit>
#include <cstdint>
#include <type_traits>
#include <cassert>

#include "test_macros.h"

class A{};
enum E1 : unsigned char { rEd };
enum class E2 : unsigned char { red };

template <typename T>
constexpr bool constexpr_test()
{
return std::ceil2(T(0)) == T(1)
&& std::ceil2(T(1)) == T(1)
&& std::ceil2(T(2)) == T(2)
&& std::ceil2(T(3)) == T(4)
&& std::ceil2(T(4)) == T(4)
&& std::ceil2(T(5)) == T(8)
&& std::ceil2(T(6)) == T(8)
&& std::ceil2(T(7)) == T(8)
&& std::ceil2(T(8)) == T(8)
&& std::ceil2(T(9)) == T(16)
;
}


template <typename T>
void runtime_test()
{
ASSERT_SAME_TYPE(T, decltype(std::ceil2(T(0))));
LIBCPP_ASSERT_NOEXCEPT( std::ceil2(T(0)));

assert( std::ceil2(T(60)) == T( 64));
assert( std::ceil2(T(61)) == T( 64));
assert( std::ceil2(T(62)) == T( 64));
assert( std::ceil2(T(63)) == T( 64));
assert( std::ceil2(T(64)) == T( 64));
assert( std::ceil2(T(65)) == T(128));
assert( std::ceil2(T(66)) == T(128));
assert( std::ceil2(T(67)) == T(128));
assert( std::ceil2(T(68)) == T(128));
assert( std::ceil2(T(69)) == T(128));
}

int main()
{

{
auto lambda = [](auto x) -> decltype(std::ceil2(x)) {};
using L = decltype(lambda);

static_assert( std::is_invocable_v<L, unsigned char>, "");
static_assert( std::is_invocable_v<L, unsigned int>, "");
static_assert( std::is_invocable_v<L, unsigned long>, "");
static_assert( std::is_invocable_v<L, unsigned long long>, "");

static_assert( std::is_invocable_v<L, uint8_t>, "");
static_assert( std::is_invocable_v<L, uint16_t>, "");
static_assert( std::is_invocable_v<L, uint32_t>, "");
static_assert( std::is_invocable_v<L, uint64_t>, "");
static_assert( std::is_invocable_v<L, size_t>, "");

static_assert( std::is_invocable_v<L, uintmax_t>, "");
static_assert( std::is_invocable_v<L, uintptr_t>, "");


static_assert(!std::is_invocable_v<L, int>, "");
static_assert(!std::is_invocable_v<L, signed int>, "");
static_assert(!std::is_invocable_v<L, long>, "");
static_assert(!std::is_invocable_v<L, long long>, "");

static_assert(!std::is_invocable_v<L, int8_t>, "");
static_assert(!std::is_invocable_v<L, int16_t>, "");
static_assert(!std::is_invocable_v<L, int32_t>, "");
static_assert(!std::is_invocable_v<L, int64_t>, "");
static_assert(!std::is_invocable_v<L, ptrdiff_t>, "");

static_assert(!std::is_invocable_v<L, bool>, "");
static_assert(!std::is_invocable_v<L, signed char>, "");
static_assert(!std::is_invocable_v<L, char16_t>, "");
static_assert(!std::is_invocable_v<L, char32_t>, "");

#ifndef _LIBCPP_HAS_NO_INT128
static_assert( std::is_invocable_v<L, __uint128_t>, "");
static_assert(!std::is_invocable_v<L, __int128_t>, "");
#endif

static_assert(!std::is_invocable_v<L, A>, "");
static_assert(!std::is_invocable_v<L, E1>, "");
static_assert(!std::is_invocable_v<L, E2>, "");
}

static_assert(constexpr_test<unsigned char>(), "");
static_assert(constexpr_test<unsigned short>(), "");
static_assert(constexpr_test<unsigned>(), "");
static_assert(constexpr_test<unsigned long>(), "");
static_assert(constexpr_test<unsigned long long>(), "");

static_assert(constexpr_test<uint8_t>(), "");
static_assert(constexpr_test<uint16_t>(), "");
static_assert(constexpr_test<uint32_t>(), "");
static_assert(constexpr_test<uint64_t>(), "");
static_assert(constexpr_test<size_t>(), "");
static_assert(constexpr_test<uintmax_t>(), "");
static_assert(constexpr_test<uintptr_t>(), "");

#ifndef _LIBCPP_HAS_NO_INT128
static_assert(constexpr_test<__uint128_t>(), "");
#endif

runtime_test<unsigned char>();
runtime_test<unsigned>();
runtime_test<unsigned short>();
runtime_test<unsigned long>();
runtime_test<unsigned long long>();

runtime_test<uint8_t>();
runtime_test<uint16_t>();
runtime_test<uint32_t>();
runtime_test<uint64_t>();
runtime_test<size_t>();
runtime_test<uintmax_t>();
runtime_test<uintptr_t>();

#ifndef _LIBCPP_HAS_NO_INT128
runtime_test<__uint128_t>();
#endif
}
164 changes: 164 additions & 0 deletions libcxx/test/std/numerics/bit/bit.pow.two/floor2.pass.cpp
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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03, c++11, c++14, c++17

// template <class T>
// constexpr T floor2(T x) noexcept;

// Returns: If x == 0, 0; otherwise the maximal value y such that floor2(y) is true and y <= x.
// Remarks: This function shall not participate in overload resolution unless
// T is an unsigned integer type

#include <bit>
#include <cstdint>
#include <type_traits>
#include <cassert>

#include "test_macros.h"

class A{};
enum E1 : unsigned char { rEd };
enum class E2 : unsigned char { red };

template <typename T>
constexpr bool constexpr_test()
{
return std::floor2(T(0)) == T(0)
&& std::floor2(T(1)) == T(1)
&& std::floor2(T(2)) == T(2)
&& std::floor2(T(3)) == T(2)
&& std::floor2(T(4)) == T(4)
&& std::floor2(T(5)) == T(4)
&& std::floor2(T(6)) == T(4)
&& std::floor2(T(7)) == T(4)
&& std::floor2(T(8)) == T(8)
&& std::floor2(T(9)) == T(8)
;
}


template <typename T>
void runtime_test()
{
ASSERT_SAME_TYPE(T, decltype(std::floor2(T(0))));
ASSERT_NOEXCEPT( std::floor2(T(0)));

assert( std::floor2(T(121)) == T(64));
assert( std::floor2(T(122)) == T(64));
assert( std::floor2(T(123)) == T(64));
assert( std::floor2(T(124)) == T(64));
assert( std::floor2(T(125)) == T(64));
assert( std::floor2(T(126)) == T(64));
assert( std::floor2(T(127)) == T(64));
assert( std::floor2(T(128)) == T(128));
assert( std::floor2(T(129)) == T(128));
assert( std::floor2(T(130)) == T(128));
}

int main()
{

{
auto lambda = [](auto x) -> decltype(std::floor2(x)) {};
using L = decltype(lambda);

static_assert( std::is_invocable_v<L, unsigned char>, "");
static_assert( std::is_invocable_v<L, unsigned int>, "");
static_assert( std::is_invocable_v<L, unsigned long>, "");
static_assert( std::is_invocable_v<L, unsigned long long>, "");

static_assert( std::is_invocable_v<L, uint8_t>, "");
static_assert( std::is_invocable_v<L, uint16_t>, "");
static_assert( std::is_invocable_v<L, uint32_t>, "");
static_assert( std::is_invocable_v<L, uint64_t>, "");
static_assert( std::is_invocable_v<L, size_t>, "");

static_assert( std::is_invocable_v<L, uintmax_t>, "");
static_assert( std::is_invocable_v<L, uintptr_t>, "");


static_assert(!std::is_invocable_v<L, int>, "");
static_assert(!std::is_invocable_v<L, signed int>, "");
static_assert(!std::is_invocable_v<L, long>, "");
static_assert(!std::is_invocable_v<L, long long>, "");

static_assert(!std::is_invocable_v<L, int8_t>, "");
static_assert(!std::is_invocable_v<L, int16_t>, "");
static_assert(!std::is_invocable_v<L, int32_t>, "");
static_assert(!std::is_invocable_v<L, int64_t>, "");
static_assert(!std::is_invocable_v<L, ptrdiff_t>, "");

static_assert(!std::is_invocable_v<L, bool>, "");
static_assert(!std::is_invocable_v<L, signed char>, "");
static_assert(!std::is_invocable_v<L, char16_t>, "");
static_assert(!std::is_invocable_v<L, char32_t>, "");

#ifndef _LIBCPP_HAS_NO_INT128
static_assert( std::is_invocable_v<L, __uint128_t>, "");
static_assert(!std::is_invocable_v<L, __int128_t>, "");
#endif

static_assert(!std::is_invocable_v<L, A>, "");
static_assert(!std::is_invocable_v<L, E1>, "");
static_assert(!std::is_invocable_v<L, E2>, "");
}

static_assert(constexpr_test<unsigned char>(), "");
static_assert(constexpr_test<unsigned short>(), "");
static_assert(constexpr_test<unsigned>(), "");
static_assert(constexpr_test<unsigned long>(), "");
static_assert(constexpr_test<unsigned long long>(), "");

static_assert(constexpr_test<uint8_t>(), "");
static_assert(constexpr_test<uint16_t>(), "");
static_assert(constexpr_test<uint32_t>(), "");
static_assert(constexpr_test<uint64_t>(), "");
static_assert(constexpr_test<size_t>(), "");
static_assert(constexpr_test<uintmax_t>(), "");
static_assert(constexpr_test<uintptr_t>(), "");

#ifndef _LIBCPP_HAS_NO_INT128
static_assert(constexpr_test<__uint128_t>(), "");
#endif

runtime_test<unsigned char>();
runtime_test<unsigned>();
runtime_test<unsigned short>();
runtime_test<unsigned long>();
runtime_test<unsigned long long>();

runtime_test<uint8_t>();
runtime_test<uint16_t>();
runtime_test<uint32_t>();
runtime_test<uint64_t>();
runtime_test<size_t>();
runtime_test<uintmax_t>();
runtime_test<uintptr_t>();

#ifndef _LIBCPP_HAS_NO_INT128
runtime_test<__uint128_t>();

{
__uint128_t val = 128;
val <<= 32;
assert( std::floor2(val-1) == val/2);
assert( std::floor2(val) == val);
assert( std::floor2(val+1) == val);
val <<= 2;
assert( std::floor2(val-1) == val/2);
assert( std::floor2(val) == val);
assert( std::floor2(val+1) == val);
val <<= 3;
assert( std::floor2(val-1) == val/2);
assert( std::floor2(val) == val);
assert( std::floor2(val+1) == val);
}
#endif

}
162 changes: 162 additions & 0 deletions libcxx/test/std/numerics/bit/bit.pow.two/ispow2.pass.cpp
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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03, c++11, c++14, c++17

// template <class T>
// constexpr bool ispow2(T x) noexcept;

// Remarks: This function shall not participate in overload resolution unless
// T is an unsigned integer type

#include <bit>
#include <cstdint>
#include <type_traits>
#include <cassert>

#include "test_macros.h"

class A{};
enum E1 : unsigned char { rEd };
enum class E2 : unsigned char { red };

template <typename T>
constexpr bool constexpr_test()
{
return std::ispow2(T(1))
&& std::ispow2(T(2))
&& !std::ispow2(T(3))
&& std::ispow2(T(4))
&& !std::ispow2(T(5))
&& !std::ispow2(T(6))
&& !std::ispow2(T(7))
&& std::ispow2(T(8))
&& !std::ispow2(T(9))
;
}


template <typename T>
void runtime_test()
{
ASSERT_SAME_TYPE(bool, decltype(std::ispow2(T(0))));
ASSERT_NOEXCEPT( std::ispow2(T(0)));

assert(!std::ispow2(T(121)));
assert(!std::ispow2(T(122)));
assert(!std::ispow2(T(123)));
assert(!std::ispow2(T(124)));
assert(!std::ispow2(T(125)));
assert(!std::ispow2(T(126)));
assert(!std::ispow2(T(127)));
assert( std::ispow2(T(128)));
assert(!std::ispow2(T(129)));
assert(!std::ispow2(T(130)));
}

int main()
{

{
auto lambda = [](auto x) -> decltype(std::ispow2(x)) {};
using L = decltype(lambda);

static_assert( std::is_invocable_v<L, unsigned char>, "");
static_assert( std::is_invocable_v<L, unsigned int>, "");
static_assert( std::is_invocable_v<L, unsigned long>, "");
static_assert( std::is_invocable_v<L, unsigned long long>, "");

static_assert( std::is_invocable_v<L, uint8_t>, "");
static_assert( std::is_invocable_v<L, uint16_t>, "");
static_assert( std::is_invocable_v<L, uint32_t>, "");
static_assert( std::is_invocable_v<L, uint64_t>, "");
static_assert( std::is_invocable_v<L, size_t>, "");

static_assert( std::is_invocable_v<L, uintmax_t>, "");
static_assert( std::is_invocable_v<L, uintptr_t>, "");


static_assert(!std::is_invocable_v<L, int>, "");
static_assert(!std::is_invocable_v<L, signed int>, "");
static_assert(!std::is_invocable_v<L, long>, "");
static_assert(!std::is_invocable_v<L, long long>, "");

static_assert(!std::is_invocable_v<L, int8_t>, "");
static_assert(!std::is_invocable_v<L, int16_t>, "");
static_assert(!std::is_invocable_v<L, int32_t>, "");
static_assert(!std::is_invocable_v<L, int64_t>, "");
static_assert(!std::is_invocable_v<L, ptrdiff_t>, "");

static_assert(!std::is_invocable_v<L, bool>, "");
static_assert(!std::is_invocable_v<L, signed char>, "");
static_assert(!std::is_invocable_v<L, char16_t>, "");
static_assert(!std::is_invocable_v<L, char32_t>, "");

#ifndef _LIBCPP_HAS_NO_INT128
static_assert( std::is_invocable_v<L, __uint128_t>, "");
static_assert(!std::is_invocable_v<L, __int128_t>, "");
#endif

static_assert(!std::is_invocable_v<L, A>, "");
static_assert(!std::is_invocable_v<L, E1>, "");
static_assert(!std::is_invocable_v<L, E2>, "");
}

static_assert(constexpr_test<unsigned char>(), "");
static_assert(constexpr_test<unsigned short>(), "");
static_assert(constexpr_test<unsigned>(), "");
static_assert(constexpr_test<unsigned long>(), "");
static_assert(constexpr_test<unsigned long long>(), "");

static_assert(constexpr_test<uint8_t>(), "");
static_assert(constexpr_test<uint16_t>(), "");
static_assert(constexpr_test<uint32_t>(), "");
static_assert(constexpr_test<uint64_t>(), "");
static_assert(constexpr_test<size_t>(), "");
static_assert(constexpr_test<uintmax_t>(), "");
static_assert(constexpr_test<uintptr_t>(), "");

#ifndef _LIBCPP_HAS_NO_INT128
static_assert(constexpr_test<__uint128_t>(), "");
#endif

runtime_test<unsigned char>();
runtime_test<unsigned>();
runtime_test<unsigned short>();
runtime_test<unsigned long>();
runtime_test<unsigned long long>();

runtime_test<uint8_t>();
runtime_test<uint16_t>();
runtime_test<uint32_t>();
runtime_test<uint64_t>();
runtime_test<size_t>();
runtime_test<uintmax_t>();
runtime_test<uintptr_t>();

#ifndef _LIBCPP_HAS_NO_INT128
runtime_test<__uint128_t>();

{
__uint128_t val = 128;
val <<= 32;
assert(!std::ispow2(val-1));
assert( std::ispow2(val));
assert(!std::ispow2(val+1));
val <<= 2;
assert(!std::ispow2(val-1));
assert( std::ispow2(val));
assert(!std::ispow2(val+1));
val <<= 3;
assert(!std::ispow2(val-1));
assert( std::ispow2(val));
assert(!std::ispow2(val+1));
}
#endif

}
177 changes: 177 additions & 0 deletions libcxx/test/std/numerics/bit/bit.pow.two/log2p1.pass.cpp
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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03, c++11, c++14, c++17

// template <class T>
// constexpr T log2p1(T x) noexcept;

// If x == 0, 0; otherwise one plus the base-2 logarithm of x, with any fractional part discarded.

// Remarks: This function shall not participate in overload resolution unless
// T is an unsigned integer type

#include <bit>
#include <cstdint>
#include <cassert>

#include "test_macros.h"

class A{};
enum E1 : unsigned char { rEd };
enum class E2 : unsigned char { red };

template <typename T>
constexpr bool constexpr_test()
{
return std::log2p1(T(0)) == T(0)
&& std::log2p1(T(1)) == T(1)
&& std::log2p1(T(2)) == T(2)
&& std::log2p1(T(3)) == T(2)
&& std::log2p1(T(4)) == T(3)
&& std::log2p1(T(5)) == T(3)
&& std::log2p1(T(6)) == T(3)
&& std::log2p1(T(7)) == T(3)
&& std::log2p1(T(8)) == T(4)
&& std::log2p1(T(9)) == T(4)
;
}


template <typename T>
void runtime_test()
{
ASSERT_SAME_TYPE(T, decltype(std::log2p1(T(0))));
ASSERT_NOEXCEPT( std::log2p1(T(0)));

assert( std::log2p1(T(0)) == T(0));
assert( std::log2p1(T(1)) == T(1));
assert( std::log2p1(T(2)) == T(2));
assert( std::log2p1(T(3)) == T(2));
assert( std::log2p1(T(4)) == T(3));
assert( std::log2p1(T(5)) == T(3));
assert( std::log2p1(T(6)) == T(3));
assert( std::log2p1(T(7)) == T(3));
assert( std::log2p1(T(8)) == T(4));
assert( std::log2p1(T(9)) == T(4));


assert( std::log2p1(T(121)) == T(7));
assert( std::log2p1(T(122)) == T(7));
assert( std::log2p1(T(123)) == T(7));
assert( std::log2p1(T(124)) == T(7));
assert( std::log2p1(T(125)) == T(7));
assert( std::log2p1(T(126)) == T(7));
assert( std::log2p1(T(127)) == T(7));
assert( std::log2p1(T(128)) == T(8));
assert( std::log2p1(T(129)) == T(8));
assert( std::log2p1(T(130)) == T(8));
}

int main()
{

{
auto lambda = [](auto x) -> decltype(std::log2p1(x)) {};
using L = decltype(lambda);

static_assert( std::is_invocable_v<L, unsigned char>, "");
static_assert( std::is_invocable_v<L, unsigned int>, "");
static_assert( std::is_invocable_v<L, unsigned long>, "");
static_assert( std::is_invocable_v<L, unsigned long long>, "");

static_assert( std::is_invocable_v<L, uint8_t>, "");
static_assert( std::is_invocable_v<L, uint16_t>, "");
static_assert( std::is_invocable_v<L, uint32_t>, "");
static_assert( std::is_invocable_v<L, uint64_t>, "");
static_assert( std::is_invocable_v<L, size_t>, "");

static_assert( std::is_invocable_v<L, uintmax_t>, "");
static_assert( std::is_invocable_v<L, uintptr_t>, "");


static_assert(!std::is_invocable_v<L, int>, "");
static_assert(!std::is_invocable_v<L, signed int>, "");
static_assert(!std::is_invocable_v<L, long>, "");
static_assert(!std::is_invocable_v<L, long long>, "");

static_assert(!std::is_invocable_v<L, int8_t>, "");
static_assert(!std::is_invocable_v<L, int16_t>, "");
static_assert(!std::is_invocable_v<L, int32_t>, "");
static_assert(!std::is_invocable_v<L, int64_t>, "");
static_assert(!std::is_invocable_v<L, ptrdiff_t>, "");

static_assert(!std::is_invocable_v<L, bool>, "");
static_assert(!std::is_invocable_v<L, signed char>, "");
static_assert(!std::is_invocable_v<L, char16_t>, "");
static_assert(!std::is_invocable_v<L, char32_t>, "");

#ifndef _LIBCPP_HAS_NO_INT128
static_assert( std::is_invocable_v<L, __uint128_t>, "");
static_assert(!std::is_invocable_v<L, __int128_t>, "");
#endif

static_assert(!std::is_invocable_v<L, A>, "");
static_assert(!std::is_invocable_v<L, E1>, "");
static_assert(!std::is_invocable_v<L, E2>, "");
}

static_assert(constexpr_test<unsigned char>(), "");
static_assert(constexpr_test<unsigned short>(), "");
static_assert(constexpr_test<unsigned>(), "");
static_assert(constexpr_test<unsigned long>(), "");
static_assert(constexpr_test<unsigned long long>(), "");

static_assert(constexpr_test<uint8_t>(), "");
static_assert(constexpr_test<uint16_t>(), "");
static_assert(constexpr_test<uint32_t>(), "");
static_assert(constexpr_test<uint64_t>(), "");
static_assert(constexpr_test<size_t>(), "");
static_assert(constexpr_test<uintmax_t>(), "");
static_assert(constexpr_test<uintptr_t>(), "");

#ifndef _LIBCPP_HAS_NO_INT128
static_assert(constexpr_test<__uint128_t>(), "");
#endif


runtime_test<unsigned char>();
runtime_test<unsigned>();
runtime_test<unsigned short>();
runtime_test<unsigned long>();
runtime_test<unsigned long long>();

runtime_test<uint8_t>();
runtime_test<uint16_t>();
runtime_test<uint32_t>();
runtime_test<uint64_t>();
runtime_test<size_t>();
runtime_test<uintmax_t>();
runtime_test<uintptr_t>();

#ifndef _LIBCPP_HAS_NO_INT128
runtime_test<__uint128_t>();

{
__uint128_t val = 128;
val <<= 32;
assert( std::log2p1(val-1) == 39);
assert( std::log2p1(val) == 40);
assert( std::log2p1(val+1) == 40);
val <<= 2;
assert( std::log2p1(val-1) == 41);
assert( std::log2p1(val) == 42);
assert( std::log2p1(val+1) == 42);
val <<= 3;
assert( std::log2p1(val-1) == 44);
assert( std::log2p1(val) == 45);
assert( std::log2p1(val+1) == 45);
}
#endif

}
165 changes: 165 additions & 0 deletions libcxx/test/std/numerics/bit/bitops.count/countl_one.pass.cpp
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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03, c++11, c++14, c++17

// template <class T>
// constexpr int countl_one(T x) noexcept;

// The number of consecutive 1 bits, starting from the most significant bit.
// [ Note: Returns N if x == std::numeric_limits<T>::max(). ]
//
// Remarks: This function shall not participate in overload resolution unless
// T is an unsigned integer type

#include <bit>
#include <cstdint>
#include <type_traits>
#include <cassert>

#include "test_macros.h"

class A{};
enum E1 : unsigned char { rEd };
enum class E2 : unsigned char { red };

template <typename T>
constexpr bool constexpr_test()
{
const int dig = std::numeric_limits<T>::digits;
const T max = std::numeric_limits<T>::max();
return std::countl_one(max) == dig
&& std::countl_one(T(max - 1)) == dig - 1
&& std::countl_one(T(max - 2)) == dig - 2
&& std::countl_one(T(max - 3)) == dig - 2
&& std::countl_one(T(max - 4)) == dig - 3
&& std::countl_one(T(max - 5)) == dig - 3
&& std::countl_one(T(max - 6)) == dig - 3
&& std::countl_one(T(max - 7)) == dig - 3
&& std::countl_one(T(max - 8)) == dig - 4
&& std::countl_one(T(max - 9)) == dig - 4
;
}


template <typename T>
void runtime_test()
{
ASSERT_SAME_TYPE(int, decltype(std::countl_one(T(0))));
ASSERT_NOEXCEPT( std::countl_one(T(0)));
const int dig = std::numeric_limits<T>::digits;

assert( std::countl_one(T(~121)) == dig - 7);
assert( std::countl_one(T(~122)) == dig - 7);
assert( std::countl_one(T(~123)) == dig - 7);
assert( std::countl_one(T(~124)) == dig - 7);
assert( std::countl_one(T(~125)) == dig - 7);
assert( std::countl_one(T(~126)) == dig - 7);
assert( std::countl_one(T(~127)) == dig - 7);
assert( std::countl_one(T(~128)) == dig - 8);
assert( std::countl_one(T(~129)) == dig - 8);
assert( std::countl_one(T(~130)) == dig - 8);
}

int main()
{
{
auto lambda = [](auto x) -> decltype(std::countl_one(x)) {};
using L = decltype(lambda);

static_assert( std::is_invocable_v<L, unsigned char>, "");
static_assert( std::is_invocable_v<L, unsigned int>, "");
static_assert( std::is_invocable_v<L, unsigned long>, "");
static_assert( std::is_invocable_v<L, unsigned long long>, "");

static_assert( std::is_invocable_v<L, uint8_t>, "");
static_assert( std::is_invocable_v<L, uint16_t>, "");
static_assert( std::is_invocable_v<L, uint32_t>, "");
static_assert( std::is_invocable_v<L, uint64_t>, "");
static_assert( std::is_invocable_v<L, size_t>, "");

static_assert( std::is_invocable_v<L, uintmax_t>, "");
static_assert( std::is_invocable_v<L, uintptr_t>, "");


static_assert(!std::is_invocable_v<L, int>, "");
static_assert(!std::is_invocable_v<L, signed int>, "");
static_assert(!std::is_invocable_v<L, long>, "");
static_assert(!std::is_invocable_v<L, long long>, "");

static_assert(!std::is_invocable_v<L, int8_t>, "");
static_assert(!std::is_invocable_v<L, int16_t>, "");
static_assert(!std::is_invocable_v<L, int32_t>, "");
static_assert(!std::is_invocable_v<L, int64_t>, "");
static_assert(!std::is_invocable_v<L, ptrdiff_t>, "");

static_assert(!std::is_invocable_v<L, bool>, "");
static_assert(!std::is_invocable_v<L, signed char>, "");
static_assert(!std::is_invocable_v<L, char16_t>, "");
static_assert(!std::is_invocable_v<L, char32_t>, "");

#ifndef _LIBCPP_HAS_NO_INT128
static_assert( std::is_invocable_v<L, __uint128_t>, "");
static_assert(!std::is_invocable_v<L, __int128_t>, "");
#endif

static_assert(!std::is_invocable_v<L, A>, "");
static_assert(!std::is_invocable_v<L, E1>, "");
static_assert(!std::is_invocable_v<L, E2>, "");
}

static_assert(constexpr_test<unsigned char>(), "");
static_assert(constexpr_test<unsigned short>(), "");
static_assert(constexpr_test<unsigned>(), "");
static_assert(constexpr_test<unsigned long>(), "");
static_assert(constexpr_test<unsigned long long>(), "");

static_assert(constexpr_test<uint8_t>(), "");
static_assert(constexpr_test<uint16_t>(), "");
static_assert(constexpr_test<uint32_t>(), "");
static_assert(constexpr_test<uint64_t>(), "");
static_assert(constexpr_test<size_t>(), "");
static_assert(constexpr_test<uintmax_t>(), "");
static_assert(constexpr_test<uintptr_t>(), "");

#ifndef _LIBCPP_HAS_NO_INT128
static_assert(constexpr_test<__uint128_t>(), "");
#endif


runtime_test<unsigned char>();
runtime_test<unsigned>();
runtime_test<unsigned short>();
runtime_test<unsigned long>();
runtime_test<unsigned long long>();

runtime_test<uint8_t>();
runtime_test<uint16_t>();
runtime_test<uint32_t>();
runtime_test<uint64_t>();
runtime_test<size_t>();
runtime_test<uintmax_t>();
runtime_test<uintptr_t>();

#ifndef _LIBCPP_HAS_NO_INT128
runtime_test<__uint128_t>();

{
const int dig = std::numeric_limits<__uint128_t>::digits;
__uint128_t val = 128;

val <<= 32;
assert( std::countl_one(~val) == dig - 40);
val <<= 2;
assert( std::countl_one(~val) == dig - 42);
val <<= 3;
assert( std::countl_one(~val) == dig - 45);
}
#endif

}
172 changes: 172 additions & 0 deletions libcxx/test/std/numerics/bit/bitops.count/countl_zero.pass.cpp
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@@ -0,0 +1,172 @@
//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03, c++11, c++14, c++17

// template <class T>
// constexpr int countl_zero(T x) noexcept;

// Returns: The number of consecutive 0 bits, starting from the most significant bit.
// [ Note: Returns N if x == 0. ]
//
// Remarks: This function shall not participate in overload resolution unless
// T is an unsigned integer type

#include <bit>
#include <cstdint>
#include <type_traits>
#include <cassert>

#include "test_macros.h"

class A{};
enum E1 : unsigned char { rEd };
enum class E2 : unsigned char { red };

template <typename T>
constexpr bool constexpr_test()
{
const int dig = std::numeric_limits<T>::digits;
return std::countl_zero(T(0)) == dig
&& std::countl_zero(T(1)) == dig - 1
&& std::countl_zero(T(2)) == dig - 2
&& std::countl_zero(T(3)) == dig - 2
&& std::countl_zero(T(4)) == dig - 3
&& std::countl_zero(T(5)) == dig - 3
&& std::countl_zero(T(6)) == dig - 3
&& std::countl_zero(T(7)) == dig - 3
&& std::countl_zero(T(8)) == dig - 4
&& std::countl_zero(T(9)) == dig - 4
&& std::countl_zero(std::numeric_limits<T>::max()) == 0
;
}


template <typename T>
void runtime_test()
{
ASSERT_SAME_TYPE(int, decltype(std::countl_zero(T(0))));
ASSERT_NOEXCEPT( std::countl_zero(T(0)));
const int dig = std::numeric_limits<T>::digits;

assert( std::countl_zero(T(121)) == dig - 7);
assert( std::countl_zero(T(122)) == dig - 7);
assert( std::countl_zero(T(123)) == dig - 7);
assert( std::countl_zero(T(124)) == dig - 7);
assert( std::countl_zero(T(125)) == dig - 7);
assert( std::countl_zero(T(126)) == dig - 7);
assert( std::countl_zero(T(127)) == dig - 7);
assert( std::countl_zero(T(128)) == dig - 8);
assert( std::countl_zero(T(129)) == dig - 8);
assert( std::countl_zero(T(130)) == dig - 8);
}

int main()
{

{
auto lambda = [](auto x) -> decltype(std::countl_zero(x)) {};
using L = decltype(lambda);

static_assert( std::is_invocable_v<L, unsigned char>, "");
static_assert( std::is_invocable_v<L, unsigned int>, "");
static_assert( std::is_invocable_v<L, unsigned long>, "");
static_assert( std::is_invocable_v<L, unsigned long long>, "");

static_assert( std::is_invocable_v<L, uint8_t>, "");
static_assert( std::is_invocable_v<L, uint16_t>, "");
static_assert( std::is_invocable_v<L, uint32_t>, "");
static_assert( std::is_invocable_v<L, uint64_t>, "");
static_assert( std::is_invocable_v<L, size_t>, "");

static_assert( std::is_invocable_v<L, uintmax_t>, "");
static_assert( std::is_invocable_v<L, uintptr_t>, "");


static_assert(!std::is_invocable_v<L, int>, "");
static_assert(!std::is_invocable_v<L, signed int>, "");
static_assert(!std::is_invocable_v<L, long>, "");
static_assert(!std::is_invocable_v<L, long long>, "");

static_assert(!std::is_invocable_v<L, int8_t>, "");
static_assert(!std::is_invocable_v<L, int16_t>, "");
static_assert(!std::is_invocable_v<L, int32_t>, "");
static_assert(!std::is_invocable_v<L, int64_t>, "");
static_assert(!std::is_invocable_v<L, ptrdiff_t>, "");

static_assert(!std::is_invocable_v<L, bool>, "");
static_assert(!std::is_invocable_v<L, signed char>, "");
static_assert(!std::is_invocable_v<L, char16_t>, "");
static_assert(!std::is_invocable_v<L, char32_t>, "");

#ifndef _LIBCPP_HAS_NO_INT128
static_assert( std::is_invocable_v<L, __uint128_t>, "");
static_assert(!std::is_invocable_v<L, __int128_t>, "");
#endif

static_assert(!std::is_invocable_v<L, A>, "");
static_assert(!std::is_invocable_v<L, E1>, "");
static_assert(!std::is_invocable_v<L, E2>, "");
}

static_assert(constexpr_test<unsigned char>(), "");
static_assert(constexpr_test<unsigned short>(), "");
static_assert(constexpr_test<unsigned>(), "");
static_assert(constexpr_test<unsigned long>(), "");
static_assert(constexpr_test<unsigned long long>(), "");

static_assert(constexpr_test<uint8_t>(), "");
static_assert(constexpr_test<uint16_t>(), "");
static_assert(constexpr_test<uint32_t>(), "");
static_assert(constexpr_test<uint64_t>(), "");
static_assert(constexpr_test<size_t>(), "");
static_assert(constexpr_test<uintmax_t>(), "");
static_assert(constexpr_test<uintptr_t>(), "");

#ifndef _LIBCPP_HAS_NO_INT128
static_assert(constexpr_test<__uint128_t>(), "");
#endif


runtime_test<unsigned char>();
runtime_test<unsigned>();
runtime_test<unsigned short>();
runtime_test<unsigned long>();
runtime_test<unsigned long long>();

runtime_test<uint8_t>();
runtime_test<uint16_t>();
runtime_test<uint32_t>();
runtime_test<uint64_t>();
runtime_test<size_t>();
runtime_test<uintmax_t>();
runtime_test<uintptr_t>();

#ifndef _LIBCPP_HAS_NO_INT128
runtime_test<__uint128_t>();

{
const int dig = std::numeric_limits<__uint128_t>::digits;
__uint128_t val = 128;

val <<= 32;
assert( std::countl_zero(val-1) == dig - 39);
assert( std::countl_zero(val) == dig - 40);
assert( std::countl_zero(val+1) == dig - 40);
val <<= 2;
assert( std::countl_zero(val-1) == dig - 41);
assert( std::countl_zero(val) == dig - 42);
assert( std::countl_zero(val+1) == dig - 42);
val <<= 3;
assert( std::countl_zero(val-1) == dig - 44);
assert( std::countl_zero(val) == dig - 45);
assert( std::countl_zero(val+1) == dig - 45);
}
#endif

}
170 changes: 170 additions & 0 deletions libcxx/test/std/numerics/bit/bitops.count/countr_one.pass.cpp
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@@ -0,0 +1,170 @@
//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03, c++11, c++14, c++17

// template <class T>
// constexpr int countr_one(T x) noexcept;

// Returns: The number of consecutive 1 bits, starting from the least significant bit.
// [ Note: Returns N if x == std::numeric_limits<T>::max(). ]
//
// Remarks: This function shall not participate in overload resolution unless
// T is an unsigned integer type

#include <bit>
#include <cstdint>
#include <type_traits>
#include <cassert>

#include "test_macros.h"

class A{};
enum E1 : unsigned char { rEd };
enum class E2 : unsigned char { red };

template <typename T>
constexpr bool constexpr_test()
{
const int dig = std::numeric_limits<T>::digits;
return std::countr_one(T(0)) == 0
&& std::countr_one(T(1)) == 1
&& std::countr_one(T(2)) == 0
&& std::countr_one(T(3)) == 2
&& std::countr_one(T(4)) == 0
&& std::countr_one(T(5)) == 1
&& std::countr_one(T(6)) == 0
&& std::countr_one(T(7)) == 3
&& std::countr_one(T(8)) == 0
&& std::countr_one(T(9)) == 1
&& std::countr_one(std::numeric_limits<T>::max()) == dig
;
}


template <typename T>
void runtime_test()
{
ASSERT_SAME_TYPE(int, decltype(std::countr_one(T(0))));
ASSERT_NOEXCEPT( std::countr_one(T(0)));

assert( std::countr_one(T(121)) == 1);
assert( std::countr_one(T(122)) == 0);
assert( std::countr_one(T(123)) == 2);
assert( std::countr_one(T(124)) == 0);
assert( std::countr_one(T(125)) == 1);
assert( std::countr_one(T(126)) == 0);
assert( std::countr_one(T(127)) == 7);
assert( std::countr_one(T(128)) == 0);
assert( std::countr_one(T(129)) == 1);
assert( std::countr_one(T(130)) == 0);
}

int main()
{

{
auto lambda = [](auto x) -> decltype(std::countr_one(x)) {};
using L = decltype(lambda);

static_assert( std::is_invocable_v<L, unsigned char>, "");
static_assert( std::is_invocable_v<L, unsigned int>, "");
static_assert( std::is_invocable_v<L, unsigned long>, "");
static_assert( std::is_invocable_v<L, unsigned long long>, "");

static_assert( std::is_invocable_v<L, uint8_t>, "");
static_assert( std::is_invocable_v<L, uint16_t>, "");
static_assert( std::is_invocable_v<L, uint32_t>, "");
static_assert( std::is_invocable_v<L, uint64_t>, "");
static_assert( std::is_invocable_v<L, size_t>, "");

static_assert( std::is_invocable_v<L, uintmax_t>, "");
static_assert( std::is_invocable_v<L, uintptr_t>, "");


static_assert(!std::is_invocable_v<L, int>, "");
static_assert(!std::is_invocable_v<L, signed int>, "");
static_assert(!std::is_invocable_v<L, long>, "");
static_assert(!std::is_invocable_v<L, long long>, "");

static_assert(!std::is_invocable_v<L, int8_t>, "");
static_assert(!std::is_invocable_v<L, int16_t>, "");
static_assert(!std::is_invocable_v<L, int32_t>, "");
static_assert(!std::is_invocable_v<L, int64_t>, "");
static_assert(!std::is_invocable_v<L, ptrdiff_t>, "");

static_assert(!std::is_invocable_v<L, bool>, "");
static_assert(!std::is_invocable_v<L, signed char>, "");
static_assert(!std::is_invocable_v<L, char16_t>, "");
static_assert(!std::is_invocable_v<L, char32_t>, "");

#ifndef _LIBCPP_HAS_NO_INT128
static_assert( std::is_invocable_v<L, __uint128_t>, "");
static_assert(!std::is_invocable_v<L, __int128_t>, "");
#endif

static_assert(!std::is_invocable_v<L, A>, "");
static_assert(!std::is_invocable_v<L, E1>, "");
static_assert(!std::is_invocable_v<L, E2>, "");
}

static_assert(constexpr_test<unsigned char>(), "");
static_assert(constexpr_test<unsigned short>(), "");
static_assert(constexpr_test<unsigned>(), "");
static_assert(constexpr_test<unsigned long>(), "");
static_assert(constexpr_test<unsigned long long>(), "");

static_assert(constexpr_test<uint8_t>(), "");
static_assert(constexpr_test<uint16_t>(), "");
static_assert(constexpr_test<uint32_t>(), "");
static_assert(constexpr_test<uint64_t>(), "");
static_assert(constexpr_test<size_t>(), "");
static_assert(constexpr_test<uintmax_t>(), "");
static_assert(constexpr_test<uintptr_t>(), "");

#ifndef _LIBCPP_HAS_NO_INT128
static_assert(constexpr_test<__uint128_t>(), "");
#endif


runtime_test<unsigned char>();
runtime_test<unsigned>();
runtime_test<unsigned short>();
runtime_test<unsigned long>();
runtime_test<unsigned long long>();

runtime_test<uint8_t>();
runtime_test<uint16_t>();
runtime_test<uint32_t>();
runtime_test<uint64_t>();
runtime_test<size_t>();
runtime_test<uintmax_t>();
runtime_test<uintptr_t>();

#ifndef _LIBCPP_HAS_NO_INT128
runtime_test<__uint128_t>();

{
__uint128_t val = 128;

val <<= 32;
assert( std::countr_one(val-1) == 39);
assert( std::countr_one(val) == 0);
assert( std::countr_one(val+1) == 1);
val <<= 2;
assert( std::countr_one(val-1) == 41);
assert( std::countr_one(val) == 0);
assert( std::countr_one(val+1) == 1);
val <<= 3;
assert( std::countr_one(val-1) == 44);
assert( std::countr_one(val) == 0);
assert( std::countr_one(val+1) == 1);
}
#endif

}
169 changes: 169 additions & 0 deletions libcxx/test/std/numerics/bit/bitops.count/countr_zero.pass.cpp
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@@ -0,0 +1,169 @@
//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03, c++11, c++14, c++17

// template <class T>
// constexpr int countr_zero(T x) noexcept;

// Returns: The number of consecutive 0 bits, starting from the most significant bit.
// [ Note: Returns N if x == 0. ]
//
// Remarks: This function shall not participate in overload resolution unless
// T is an unsigned integer type

#include <bit>
#include <cstdint>
#include <type_traits>
#include <cassert>

#include "test_macros.h"

class A{};
enum E1 : unsigned char { rEd };
enum class E2 : unsigned char { red };

template <typename T>
constexpr bool constexpr_test()
{
const int dig = std::numeric_limits<T>::digits;
return std::countr_zero(T(0)) == dig
&& std::countr_zero(T(1)) == 0
&& std::countr_zero(T(2)) == 1
&& std::countr_zero(T(3)) == 0
&& std::countr_zero(T(4)) == 2
&& std::countr_zero(T(5)) == 0
&& std::countr_zero(T(6)) == 1
&& std::countr_zero(T(7)) == 0
&& std::countr_zero(T(8)) == 3
&& std::countr_zero(T(9)) == 0
&& std::countr_zero(std::numeric_limits<T>::max()) == 0
;
}


template <typename T>
void runtime_test()
{
ASSERT_SAME_TYPE(int, decltype(std::countr_zero(T(0))));
ASSERT_NOEXCEPT( std::countr_zero(T(0)));

assert( std::countr_zero(T(121)) == 0);
assert( std::countr_zero(T(122)) == 1);
assert( std::countr_zero(T(123)) == 0);
assert( std::countr_zero(T(124)) == 2);
assert( std::countr_zero(T(125)) == 0);
assert( std::countr_zero(T(126)) == 1);
assert( std::countr_zero(T(127)) == 0);
assert( std::countr_zero(T(128)) == 7);
assert( std::countr_zero(T(129)) == 0);
assert( std::countr_zero(T(130)) == 1);
}

int main()
{

{
auto lambda = [](auto x) -> decltype(std::countr_zero(x)) {};
using L = decltype(lambda);

static_assert( std::is_invocable_v<L, unsigned char>, "");
static_assert( std::is_invocable_v<L, unsigned int>, "");
static_assert( std::is_invocable_v<L, unsigned long>, "");
static_assert( std::is_invocable_v<L, unsigned long long>, "");

static_assert( std::is_invocable_v<L, uint8_t>, "");
static_assert( std::is_invocable_v<L, uint16_t>, "");
static_assert( std::is_invocable_v<L, uint32_t>, "");
static_assert( std::is_invocable_v<L, uint64_t>, "");
static_assert( std::is_invocable_v<L, size_t>, "");

static_assert( std::is_invocable_v<L, uintmax_t>, "");
static_assert( std::is_invocable_v<L, uintptr_t>, "");


static_assert(!std::is_invocable_v<L, int>, "");
static_assert(!std::is_invocable_v<L, signed int>, "");
static_assert(!std::is_invocable_v<L, long>, "");
static_assert(!std::is_invocable_v<L, long long>, "");

static_assert(!std::is_invocable_v<L, int8_t>, "");
static_assert(!std::is_invocable_v<L, int16_t>, "");
static_assert(!std::is_invocable_v<L, int32_t>, "");
static_assert(!std::is_invocable_v<L, int64_t>, "");
static_assert(!std::is_invocable_v<L, ptrdiff_t>, "");

static_assert(!std::is_invocable_v<L, bool>, "");
static_assert(!std::is_invocable_v<L, signed char>, "");
static_assert(!std::is_invocable_v<L, char16_t>, "");
static_assert(!std::is_invocable_v<L, char32_t>, "");

#ifndef _LIBCPP_HAS_NO_INT128
static_assert( std::is_invocable_v<L, __uint128_t>, "");
static_assert(!std::is_invocable_v<L, __int128_t>, "");
#endif

static_assert(!std::is_invocable_v<L, A>, "");
static_assert(!std::is_invocable_v<L, E1>, "");
static_assert(!std::is_invocable_v<L, E2>, "");
}

static_assert(constexpr_test<unsigned char>(), "");
static_assert(constexpr_test<unsigned short>(), "");
static_assert(constexpr_test<unsigned>(), "");
static_assert(constexpr_test<unsigned long>(), "");
static_assert(constexpr_test<unsigned long long>(), "");

static_assert(constexpr_test<uint8_t>(), "");
static_assert(constexpr_test<uint16_t>(), "");
static_assert(constexpr_test<uint32_t>(), "");
static_assert(constexpr_test<uint64_t>(), "");
static_assert(constexpr_test<size_t>(), "");
static_assert(constexpr_test<uintmax_t>(), "");
static_assert(constexpr_test<uintptr_t>(), "");

#ifndef _LIBCPP_HAS_NO_INT128
static_assert(constexpr_test<__uint128_t>(), "");
#endif

runtime_test<unsigned char>();
runtime_test<unsigned>();
runtime_test<unsigned short>();
runtime_test<unsigned long>();
runtime_test<unsigned long long>();

runtime_test<uint8_t>();
runtime_test<uint16_t>();
runtime_test<uint32_t>();
runtime_test<uint64_t>();
runtime_test<size_t>();
runtime_test<uintmax_t>();
runtime_test<uintptr_t>();

#ifndef _LIBCPP_HAS_NO_INT128
runtime_test<__uint128_t>();

{
__uint128_t val = 128;

val <<= 32;
assert( std::countr_zero(val-1) == 0);
assert( std::countr_zero(val) == 39);
assert( std::countr_zero(val+1) == 0);
val <<= 2;
assert( std::countr_zero(val-1) == 0);
assert( std::countr_zero(val) == 41);
assert( std::countr_zero(val+1) == 0);
val <<= 3;
assert( std::countr_zero(val-1) == 0);
assert( std::countr_zero(val) == 44);
assert( std::countr_zero(val+1) == 0);
}
#endif

}
167 changes: 167 additions & 0 deletions libcxx/test/std/numerics/bit/bitops.count/popcount.pass.cpp
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@@ -0,0 +1,167 @@
//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03, c++11, c++14, c++17

// template <class T>
// constexpr int popcount(T x) noexcept;

// Returns: The number of bits set to one in the value of x.
//
// Remarks: This function shall not participate in overload resolution unless
// T is an unsigned integer type

#include <bit>
#include <cstdint>
#include <type_traits>
#include <cassert>

#include "test_macros.h"

class A{};
enum E1 : unsigned char { rEd };
enum class E2 : unsigned char { red };

template <typename T>
constexpr bool constexpr_test()
{
return std::popcount(T(0)) == 0
&& std::popcount(T(1)) == 1
&& std::popcount(T(2)) == 1
&& std::popcount(T(3)) == 2
&& std::popcount(T(4)) == 1
&& std::popcount(T(5)) == 2
&& std::popcount(T(6)) == 2
&& std::popcount(T(7)) == 3
&& std::popcount(T(8)) == 1
&& std::popcount(T(9)) == 2
&& std::popcount(std::numeric_limits<T>::max()) == std::numeric_limits<T>::digits
;
}


template <typename T>
void runtime_test()
{
ASSERT_SAME_TYPE(int, decltype(std::popcount(T(0))));
ASSERT_NOEXCEPT( std::popcount(T(0)));

assert( std::popcount(T(121)) == 5);
assert( std::popcount(T(122)) == 5);
assert( std::popcount(T(123)) == 6);
assert( std::popcount(T(124)) == 5);
assert( std::popcount(T(125)) == 6);
assert( std::popcount(T(126)) == 6);
assert( std::popcount(T(127)) == 7);
assert( std::popcount(T(128)) == 1);
assert( std::popcount(T(129)) == 2);
assert( std::popcount(T(130)) == 2);
}

int main()
{

{
auto lambda = [](auto x) -> decltype(std::popcount(x)) {};
using L = decltype(lambda);

static_assert( std::is_invocable_v<L, unsigned char>, "");
static_assert( std::is_invocable_v<L, unsigned int>, "");
static_assert( std::is_invocable_v<L, unsigned long>, "");
static_assert( std::is_invocable_v<L, unsigned long long>, "");

static_assert( std::is_invocable_v<L, uint8_t>, "");
static_assert( std::is_invocable_v<L, uint16_t>, "");
static_assert( std::is_invocable_v<L, uint32_t>, "");
static_assert( std::is_invocable_v<L, uint64_t>, "");
static_assert( std::is_invocable_v<L, size_t>, "");

static_assert( std::is_invocable_v<L, uintmax_t>, "");
static_assert( std::is_invocable_v<L, uintptr_t>, "");


static_assert(!std::is_invocable_v<L, int>, "");
static_assert(!std::is_invocable_v<L, signed int>, "");
static_assert(!std::is_invocable_v<L, long>, "");
static_assert(!std::is_invocable_v<L, long long>, "");

static_assert(!std::is_invocable_v<L, int8_t>, "");
static_assert(!std::is_invocable_v<L, int16_t>, "");
static_assert(!std::is_invocable_v<L, int32_t>, "");
static_assert(!std::is_invocable_v<L, int64_t>, "");
static_assert(!std::is_invocable_v<L, ptrdiff_t>, "");

static_assert(!std::is_invocable_v<L, bool>, "");
static_assert(!std::is_invocable_v<L, signed char>, "");
static_assert(!std::is_invocable_v<L, char16_t>, "");
static_assert(!std::is_invocable_v<L, char32_t>, "");

#ifndef _LIBCPP_HAS_NO_INT128
static_assert( std::is_invocable_v<L, __uint128_t>, "");
static_assert(!std::is_invocable_v<L, __int128_t>, "");
#endif

static_assert(!std::is_invocable_v<L, A>, "");
static_assert(!std::is_invocable_v<L, E1>, "");
static_assert(!std::is_invocable_v<L, E2>, "");
}

static_assert(constexpr_test<unsigned char>(), "");
static_assert(constexpr_test<unsigned short>(), "");
static_assert(constexpr_test<unsigned>(), "");
static_assert(constexpr_test<unsigned long>(), "");
static_assert(constexpr_test<unsigned long long>(), "");

static_assert(constexpr_test<uint8_t>(), "");
static_assert(constexpr_test<uint16_t>(), "");
static_assert(constexpr_test<uint32_t>(), "");
static_assert(constexpr_test<uint64_t>(), "");
static_assert(constexpr_test<size_t>(), "");
static_assert(constexpr_test<uintmax_t>(), "");
static_assert(constexpr_test<uintptr_t>(), "");

#ifndef _LIBCPP_HAS_NO_INT128
static_assert(constexpr_test<__uint128_t>(), "");
#endif


runtime_test<unsigned char>();
runtime_test<unsigned>();
runtime_test<unsigned short>();
runtime_test<unsigned long>();
runtime_test<unsigned long long>();

runtime_test<uint8_t>();
runtime_test<uint16_t>();
runtime_test<uint32_t>();
runtime_test<uint64_t>();
runtime_test<size_t>();
runtime_test<uintmax_t>();
runtime_test<uintptr_t>();

#ifndef _LIBCPP_HAS_NO_INT128
runtime_test<__uint128_t>();

{
__uint128_t val = 128;

val <<= 32;
assert( std::popcount(val-1) == 39);
assert( std::popcount(val) == 1);
assert( std::popcount(val+1) == 2);
val <<= 2;
assert( std::popcount(val-1) == 41);
assert( std::popcount(val) == 1);
assert( std::popcount(val+1) == 2);
val <<= 3;
assert( std::popcount(val-1) == 44);
assert( std::popcount(val) == 1);
assert( std::popcount(val+1) == 2);
}
#endif
}
167 changes: 167 additions & 0 deletions libcxx/test/std/numerics/bit/bitops.rot/rotl.pass.cpp
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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03, c++11, c++14, c++17

// template <class T>
// constexpr int rotl(T x, unsigned int s) noexcept;

// Remarks: This function shall not participate in overload resolution unless
// T is an unsigned integer type

#include <bit>
#include <cstdint>
#include <type_traits>
#include <cassert>

#include "test_macros.h"

class A{};
enum E1 : unsigned char { rEd };
enum class E2 : unsigned char { red };

template <typename T>
constexpr bool constexpr_test()
{
const T max = std::numeric_limits<T>::max();
return std::rotl(T(1), 0) == T( 1)
&& std::rotl(T(1), 1) == T( 2)
&& std::rotl(T(1), 2) == T( 4)
&& std::rotl(T(1), 3) == T( 8)
&& std::rotl(T(1), 4) == T( 16)
&& std::rotl(T(1), 5) == T( 32)
&& std::rotl(T(1), 6) == T( 64)
&& std::rotl(T(1), 7) == T(128)
&& std::rotl(max, 0) == max
&& std::rotl(max, 1) == max
&& std::rotl(max, 2) == max
&& std::rotl(max, 3) == max
&& std::rotl(max, 4) == max
&& std::rotl(max, 5) == max
&& std::rotl(max, 6) == max
&& std::rotl(max, 7) == max
;
}


template <typename T>
void runtime_test()
{
ASSERT_SAME_TYPE(T, decltype(std::rotl(T(0), 0)));
ASSERT_NOEXCEPT( std::rotl(T(0), 0));
const T val = std::numeric_limits<T>::max() - 1;

assert( std::rotl(val, 0) == val);
assert( std::rotl(val, 1) == T((val << 1) + 1));
assert( std::rotl(val, 2) == T((val << 2) + 3));
assert( std::rotl(val, 3) == T((val << 3) + 7));
assert( std::rotl(val, 4) == T((val << 4) + 15));
assert( std::rotl(val, 5) == T((val << 5) + 31));
assert( std::rotl(val, 6) == T((val << 6) + 63));
assert( std::rotl(val, 7) == T((val << 7) + 127));
}

int main()
{

{
auto lambda = [](auto x) -> decltype(std::rotl(x, 1U)) {};
using L = decltype(lambda);

static_assert( std::is_invocable_v<L, unsigned char>, "");
static_assert( std::is_invocable_v<L, unsigned int>, "");
static_assert( std::is_invocable_v<L, unsigned long>, "");
static_assert( std::is_invocable_v<L, unsigned long long>, "");

static_assert( std::is_invocable_v<L, uint8_t>, "");
static_assert( std::is_invocable_v<L, uint16_t>, "");
static_assert( std::is_invocable_v<L, uint32_t>, "");
static_assert( std::is_invocable_v<L, uint64_t>, "");
static_assert( std::is_invocable_v<L, size_t>, "");

static_assert( std::is_invocable_v<L, uintmax_t>, "");
static_assert( std::is_invocable_v<L, uintptr_t>, "");


static_assert(!std::is_invocable_v<L, int>, "");
static_assert(!std::is_invocable_v<L, signed int>, "");
static_assert(!std::is_invocable_v<L, long>, "");
static_assert(!std::is_invocable_v<L, long long>, "");

static_assert(!std::is_invocable_v<L, int8_t>, "");
static_assert(!std::is_invocable_v<L, int16_t>, "");
static_assert(!std::is_invocable_v<L, int32_t>, "");
static_assert(!std::is_invocable_v<L, int64_t>, "");
static_assert(!std::is_invocable_v<L, ptrdiff_t>, "");

static_assert(!std::is_invocable_v<L, bool>, "");
static_assert(!std::is_invocable_v<L, signed char>, "");
static_assert(!std::is_invocable_v<L, char16_t>, "");
static_assert(!std::is_invocable_v<L, char32_t>, "");

#ifndef _LIBCPP_HAS_NO_INT128
static_assert( std::is_invocable_v<L, __uint128_t>, "");
static_assert(!std::is_invocable_v<L, __int128_t>, "");
#endif

static_assert(!std::is_invocable_v<L, A>, "");
static_assert(!std::is_invocable_v<L, E1>, "");
static_assert(!std::is_invocable_v<L, E2>, "");
}

static_assert(constexpr_test<unsigned char>(), "");
static_assert(constexpr_test<unsigned short>(), "");
static_assert(constexpr_test<unsigned>(), "");
static_assert(constexpr_test<unsigned long>(), "");
static_assert(constexpr_test<unsigned long long>(), "");

static_assert(constexpr_test<uint8_t>(), "");
static_assert(constexpr_test<uint16_t>(), "");
static_assert(constexpr_test<uint32_t>(), "");
static_assert(constexpr_test<uint64_t>(), "");
static_assert(constexpr_test<size_t>(), "");
static_assert(constexpr_test<uintmax_t>(), "");
static_assert(constexpr_test<uintptr_t>(), "");

#ifndef _LIBCPP_HAS_NO_INT128
static_assert(constexpr_test<__uint128_t>(), "");
#endif


runtime_test<unsigned char>();
runtime_test<unsigned short>();
runtime_test<unsigned>();
runtime_test<unsigned long>();
runtime_test<unsigned long long>();

runtime_test<uint8_t>();
runtime_test<uint16_t>();
runtime_test<uint32_t>();
runtime_test<uint64_t>();
runtime_test<size_t>();
runtime_test<uintmax_t>();
runtime_test<uintptr_t>();

#ifndef _LIBCPP_HAS_NO_INT128
runtime_test<__uint128_t>();

{
__uint128_t val = 168; // 0xA8 (aka 10101000)

assert( std::rotl(val, 128) == 168);
val <<= 32;
assert( std::rotl(val, 96) == 168);
val <<= 2;
assert( std::rotl(val, 95) == 336);
val <<= 3;
assert( std::rotl(val, 90) == 84);
assert( std::rotl(val, 218) == 84);
}
#endif

}
181 changes: 181 additions & 0 deletions libcxx/test/std/numerics/bit/bitops.rot/rotr.pass.cpp
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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03, c++11, c++14, c++17

// template <class T>
// constexpr int rotr(T x, unsigned int s) noexcept;

// Remarks: This function shall not participate in overload resolution unless
// T is an unsigned integer type

#include <bit>
#include <cstdint>
#include <type_traits>
#include <cassert>

#include "test_macros.h"

class A{};
enum E1 : unsigned char { rEd };
enum class E2 : unsigned char { red };

template <typename T>
constexpr bool constexpr_test()
{
const T max = std::numeric_limits<T>::max();

return std::rotr(T(128), 0) == T(128)
&& std::rotr(T(128), 1) == T( 64)
&& std::rotr(T(128), 2) == T( 32)
&& std::rotr(T(128), 3) == T( 16)
&& std::rotr(T(128), 4) == T( 8)
&& std::rotr(T(128), 5) == T( 4)
&& std::rotr(T(128), 6) == T( 2)
&& std::rotr(T(128), 7) == T( 1)
&& std::rotr(max, 0) == max
&& std::rotr(max, 1) == max
&& std::rotr(max, 2) == max
&& std::rotr(max, 3) == max
&& std::rotr(max, 4) == max
&& std::rotr(max, 5) == max
&& std::rotr(max, 6) == max
&& std::rotr(max, 7) == max
;
}


template <typename T>
void runtime_test()
{
ASSERT_SAME_TYPE(T, decltype(std::rotr(T(0), 0)));
ASSERT_NOEXCEPT( std::rotr(T(0), 0));
const T max = std::numeric_limits<T>::max();
const T val = std::numeric_limits<T>::max() - 1;

const T uppers [] = {
max, // not used
max - max, // 000 .. 0
max - (max >> 1), // 800 .. 0
max - (max >> 2), // C00 .. 0
max - (max >> 3), // E00 .. 0
max - (max >> 4), // F00 .. 0
max - (max >> 5), // F80 .. 0
max - (max >> 6), // FC0 .. 0
max - (max >> 7), // FE0 .. 0
};

assert( std::rotr(val, 0) == val);
assert( std::rotr(val, 1) == T((val >> 1) + uppers[1]));
assert( std::rotr(val, 2) == T((val >> 2) + uppers[2]));
assert( std::rotr(val, 3) == T((val >> 3) + uppers[3]));
assert( std::rotr(val, 4) == T((val >> 4) + uppers[4]));
assert( std::rotr(val, 5) == T((val >> 5) + uppers[5]));
assert( std::rotr(val, 6) == T((val >> 6) + uppers[6]));
assert( std::rotr(val, 7) == T((val >> 7) + uppers[7]));
}

int main()
{

{
auto lambda = [](auto x) -> decltype(std::rotr(x, 1U)) {};
using L = decltype(lambda);

static_assert( std::is_invocable_v<L, unsigned char>, "");
static_assert( std::is_invocable_v<L, unsigned int>, "");
static_assert( std::is_invocable_v<L, unsigned long>, "");
static_assert( std::is_invocable_v<L, unsigned long long>, "");

static_assert( std::is_invocable_v<L, uint8_t>, "");
static_assert( std::is_invocable_v<L, uint16_t>, "");
static_assert( std::is_invocable_v<L, uint32_t>, "");
static_assert( std::is_invocable_v<L, uint64_t>, "");
static_assert( std::is_invocable_v<L, size_t>, "");

static_assert( std::is_invocable_v<L, uintmax_t>, "");
static_assert( std::is_invocable_v<L, uintptr_t>, "");


static_assert(!std::is_invocable_v<L, int>, "");
static_assert(!std::is_invocable_v<L, signed int>, "");
static_assert(!std::is_invocable_v<L, long>, "");
static_assert(!std::is_invocable_v<L, long long>, "");

static_assert(!std::is_invocable_v<L, int8_t>, "");
static_assert(!std::is_invocable_v<L, int16_t>, "");
static_assert(!std::is_invocable_v<L, int32_t>, "");
static_assert(!std::is_invocable_v<L, int64_t>, "");
static_assert(!std::is_invocable_v<L, ptrdiff_t>, "");

static_assert(!std::is_invocable_v<L, bool>, "");
static_assert(!std::is_invocable_v<L, signed char>, "");
static_assert(!std::is_invocable_v<L, char16_t>, "");
static_assert(!std::is_invocable_v<L, char32_t>, "");

#ifndef _LIBCPP_HAS_NO_INT128
static_assert( std::is_invocable_v<L, __uint128_t>, "");
static_assert(!std::is_invocable_v<L, __int128_t>, "");
#endif

static_assert(!std::is_invocable_v<L, A, unsigned>, "");
static_assert(!std::is_invocable_v<L, E1, unsigned>, "");
static_assert(!std::is_invocable_v<L, E2, unsigned>, "");
}

static_assert(constexpr_test<unsigned char>(), "");
static_assert(constexpr_test<unsigned short>(), "");
static_assert(constexpr_test<unsigned>(), "");
static_assert(constexpr_test<unsigned long>(), "");
static_assert(constexpr_test<unsigned long long>(), "");

static_assert(constexpr_test<uint8_t>(), "");
static_assert(constexpr_test<uint16_t>(), "");
static_assert(constexpr_test<uint32_t>(), "");
static_assert(constexpr_test<uint64_t>(), "");
static_assert(constexpr_test<size_t>(), "");
static_assert(constexpr_test<uintmax_t>(), "");
static_assert(constexpr_test<uintptr_t>(), "");

#ifndef _LIBCPP_HAS_NO_INT128
static_assert(constexpr_test<__uint128_t>(), "");
#endif


runtime_test<unsigned char>();
runtime_test<unsigned>();
runtime_test<unsigned short>();
runtime_test<unsigned long>();
runtime_test<unsigned long long>();

runtime_test<uint8_t>();
runtime_test<uint16_t>();
runtime_test<uint32_t>();
runtime_test<uint64_t>();
runtime_test<size_t>();
runtime_test<uintmax_t>();
runtime_test<uintptr_t>();


#ifndef _LIBCPP_HAS_NO_INT128
runtime_test<__uint128_t>();

{
__uint128_t val = 168; // 0xA8 (aka 10101000)

assert( std::rotr(val, 128) == 168);
val <<= 32;
assert( std::rotr(val, 32) == 168);
val <<= 2;
assert( std::rotr(val, 33) == 336);
val <<= 3;
assert( std::rotr(val, 38) == 84);
assert( std::rotr(val, 166) == 84);
}
#endif
}
12 changes: 12 additions & 0 deletions libcxx/test/std/numerics/bit/nothing_to_do.pass.cpp
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@@ -0,0 +1,12 @@
//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

int main()
{
}