File indexing completed on 2024-05-12 04:44:33 

0001 // SPDX-FileCopyrightText: Lukas Sommer <sommerluk@gmail.com>
0002 // SPDX-License-Identifier: BSD-2-Clause OR MIT
0003 
0004 #ifndef HELPERPOSIXMATH_H
0005 #define HELPERPOSIXMATH_H
0006 
0007 #include <qmath.h>
0008 
0009 /** @internal
0010  *
0011  * @file
0012  *
0013  * From <tt>&lt;qmath.h&gt;</tt> documentation:
0014  *
0015  * > The header also ensures some constants specified in POSIX, but not
0016  * > present in C++ standards (so absent from <tt>&lt;math.h&gt;</tt> on some
0017  * > platforms), are defined:
0018  *
0019  * To ensure that we never forget to include <tt>&lt;qmath.h&gt;</tt>, we
0020  * define our own constexpr with these values here. When these constexpr are
0021  * used, it is ensured that <em>this</em> header is included, and thus
0022  * indirectly also <tt>&lt;qmath.h&gt;</tt>. Furthermore, the constexpr are
0023  * much more convenient to use than the POSIX constants, which are macros. */
0024 
0025 namespace PerceptualColor
0026 {
0027 
0028 /** @internal
0029  *
0030  * @brief pi */
0031 constexpr auto pi = M_PI;
0032 
0033 } // namespace PerceptualColor
0034 
0035 #endif // HELPERPOSIXMATH_H