shylie/llvm-project
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
llvm-project/libcxx/include/numbers
Arthur O'Dwyer d586f92c94 [libc++] Consistently replace std:: qualification with _VSTD:: or nothing. NFCI. 
I used a lot of `git grep` to find places where `std::` was being used
outside of comments and assert-messages. There were three outcomes:

- Qualified function calls, e.g. `std::move` becomes `_VSTD::move`.
    This is the most common case.

- Typenames that don't need qualification, e.g. `std::allocator` becomes `allocator`.
    Leaving these as `_VSTD::allocator` would also be fine, but I decided
    that removing the qualification is more consistent with existing practice.

- Names that specifically need un-versioned `std::` qualification,
    or that I wasn't sure about. For example, I didn't touch any code in
    <atomic>, <math.h>, <new>, or any ext/ or experimental/ headers;
    and I didn't touch any instances of `std::type_info`.

In some deduction guides, we were accidentally using `class Alloc = typename std::allocator<T>`,
despite `std::allocator<T>`'s type-ness not being template-dependent.
Because `std::allocator` is a qualified name, this did parse as we intended;
but what we meant was simply `class Alloc = allocator<T>`.

Differential Revision: https://reviews.llvm.org/D92250
2020-12-01 22:13:39 -05:00

142 lines
6.7 KiB
C++
Raw Blame History

// -*- C++ -*-
//===---------------------------- numbers ---------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP_NUMBERS
#define _LIBCPP_NUMBERS
/*
numbers synopsis
namespace std::numbers {
template<class T> inline constexpr T e_v = unspecified;
template<class T> inline constexpr T log2e_v = unspecified;
template<class T> inline constexpr T log10e_v = unspecified;
template<class T> inline constexpr T pi_v = unspecified;
template<class T> inline constexpr T inv_pi_v = unspecified;
template<class T> inline constexpr T inv_sqrtpi_v = unspecified;
template<class T> inline constexpr T ln2_v = unspecified;
template<class T> inline constexpr T ln10_v = unspecified;
template<class T> inline constexpr T sqrt2_v = unspecified;
template<class T> inline constexpr T sqrt3_v = unspecified;
template<class T> inline constexpr T inv_sqrt3_v = unspecified;
template<class T> inline constexpr T egamma_v = unspecified;
template<class T> inline constexpr T phi_v = unspecified;
template<floating_point T> inline constexpr T e_v<T> = see below;
template<floating_point T> inline constexpr T log2e_v<T> = see below;
template<floating_point T> inline constexpr T log10e_v<T> = see below;
template<floating_point T> inline constexpr T pi_v<T> = see below;
template<floating_point T> inline constexpr T inv_pi_v<T> = see below;
template<floating_point T> inline constexpr T inv_sqrtpi_v<T> = see below;
template<floating_point T> inline constexpr T ln2_v<T> = see below;
template<floating_point T> inline constexpr T ln10_v<T> = see below;
template<floating_point T> inline constexpr T sqrt2_v<T> = see below;
template<floating_point T> inline constexpr T sqrt3_v<T> = see below;
template<floating_point T> inline constexpr T inv_sqrt3_v<T> = see below;
template<floating_point T> inline constexpr T egamma_v<T> = see below;
template<floating_point T> inline constexpr T phi_v<T> = see below;
inline constexpr double e = e_v<double>;
inline constexpr double log2e = log2e_v<double>;
inline constexpr double log10e = log10e_v<double>;
inline constexpr double pi = pi_v<double>;
inline constexpr double inv_pi = inv_pi_v<double>;
inline constexpr double inv_sqrtpi = inv_sqrtpi_v<double>;
inline constexpr double ln2 = ln2_v<double>;
inline constexpr double ln10 = ln10_v<double>;
inline constexpr double sqrt2 = sqrt2_v<double>;
inline constexpr double sqrt3 = sqrt3_v<double>;
inline constexpr double inv_sqrt3 = inv_sqrt3_v<double>;
inline constexpr double egamma = egamma_v<double>;
inline constexpr double phi = phi_v<double>;
}
*/
#include <__config>
#if _LIBCPP_STD_VER > 17 && defined(__cpp_concepts) && __cpp_concepts >= 201811L
#include <type_traits>
#include <version>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
namespace numbers {
template <class T>
inline constexpr bool __false = false;
template <class T>
struct __illformed
{
static_assert(__false<T>, "A program that instantiates a primary template of a mathematical constant variable template is ill-formed.");
};
template <class T> inline constexpr T e_v = __illformed<T>{};
template <class T> inline constexpr T log2e_v = __illformed<T>{};
template <class T> inline constexpr T log10e_v = __illformed<T>{};
template <class T> inline constexpr T pi_v = __illformed<T>{};
template <class T> inline constexpr T inv_pi_v = __illformed<T>{};
template <class T> inline constexpr T inv_sqrtpi_v = __illformed<T>{};
template <class T> inline constexpr T ln2_v = __illformed<T>{};
template <class T> inline constexpr T ln10_v = __illformed<T>{};
template <class T> inline constexpr T sqrt2_v = __illformed<T>{};
template <class T> inline constexpr T sqrt3_v = __illformed<T>{};
template <class T> inline constexpr T inv_sqrt3_v = __illformed<T>{};
template <class T> inline constexpr T egamma_v = __illformed<T>{};
template <class T> inline constexpr T phi_v = __illformed<T>{};
template <class T>
concept __floating_point = is_floating_point_v<T>;
template <__floating_point T> inline constexpr T e_v<T> = 2.718281828459045235360287471352662;
template <__floating_point T> inline constexpr T log2e_v<T> = 1.442695040888963407359924681001892;
template <__floating_point T> inline constexpr T log10e_v<T> = 0.434294481903251827651128918916605;
template <__floating_point T> inline constexpr T pi_v<T> = 3.141592653589793238462643383279502;
template <__floating_point T> inline constexpr T inv_pi_v<T> = 0.318309886183790671537767526745028;
template <__floating_point T> inline constexpr T inv_sqrtpi_v<T> = 0.564189583547756286948079451560772;
template <__floating_point T> inline constexpr T ln2_v<T> = 0.693147180559945309417232121458176;
template <__floating_point T> inline constexpr T ln10_v<T> = 2.302585092994045684017991454684364;
template <__floating_point T> inline constexpr T sqrt2_v<T> = 1.414213562373095048801688724209698;
template <__floating_point T> inline constexpr T sqrt3_v<T> = 1.732050807568877293527446341505872;
template <__floating_point T> inline constexpr T inv_sqrt3_v<T> = 0.577350269189625764509148780501957;
template <__floating_point T> inline constexpr T egamma_v<T> = 0.577215664901532860606512090082402;
template <__floating_point T> inline constexpr T phi_v<T> = 1.618033988749894848204586834365638;
inline constexpr double e = e_v<double>;
inline constexpr double log2e = log2e_v<double>;
inline constexpr double log10e = log10e_v<double>;
inline constexpr double pi = pi_v<double>;
inline constexpr double inv_pi = inv_pi_v<double>;
inline constexpr double inv_sqrtpi = inv_sqrtpi_v<double>;
inline constexpr double ln2 = ln2_v<double>;
inline constexpr double ln10 = ln10_v<double>;
inline constexpr double sqrt2 = sqrt2_v<double>;
inline constexpr double sqrt3 = sqrt3_v<double>;
inline constexpr double inv_sqrt3 = inv_sqrt3_v<double>;
inline constexpr double egamma = egamma_v<double>;
inline constexpr double phi = phi_v<double>;
} // namespace numbers
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif //_LIBCPP_STD_VER > 17 && defined(__cpp_concepts) && __cpp_concepts >= 201811L
#endif // _LIBCPP_NUMBERS
Reference in New Issue View Git Blame Copy Permalink