add version macros

CHANGELOG.md

@@ -1,4 +1,8 @@
 ## [Unreleased]
+### Added
+- Added version macros `SPECTRA_MAJOR_VERSION`, `SPECTRA_MINOR_VERSION`,
+ `SPECTRA_PATCH_VERSION`, and `SPECTRA_VERSION` that are included by all eigen solvers
+
 ### Changed
 - **API change**: Spectra now requires C++11
 - **API change**: All enumerations have been converted to enum classes

include/Spectra/GenEigsBase.h

@@ -14,6 +14,7 @@
 #include <complex> // std::complex, std::conj, std::norm, std::abs
 #include <stdexcept> // std::invalid_argument
 
+#include "Util/Version.h"
 #include "Util/TypeTraits.h"
 #include "Util/SelectionRule.h"
 #include "Util/CompInfo.h"

include/Spectra/SymEigsBase.h

@@ -14,6 +14,7 @@
 #include <stdexcept> // std::invalid_argument
 #include <utility> // std::move
 
+#include "Util/Version.h"
 #include "Util/TypeTraits.h"
 #include "Util/SelectionRule.h"
 #include "Util/CompInfo.h"

include/Spectra/Util/Version.h

@@ -0,0 +1,16 @@
+// Copyright (C) 2020 Yixuan Qiu <yixuan.qiu@cos.name>
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at https://mozilla.org/MPL/2.0/.
+
+#ifndef VERSION_H
+#define VERSION_H
+
+#define SPECTRA_MAJOR_VERSION 1
+#define SPECTRA_MINOR_VERSION 0
+#define SPECTRA_PATCH_VERSION 0
+
+#define SPECTRA_VERSION (SPECTRA_MAJOR_VERSION * 10000 + SPECTRA_MINOR_VERSION * 100 + SPECTRA_PATCH_VERSION)
+
+#endif // VERSION_H