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authorDaniel Friesel <daniel.friesel@uos.de>2021-05-12 09:12:09 +0200
committerDaniel Friesel <daniel.friesel@uos.de>2021-05-12 09:12:09 +0200
commit39895a677e5d370824e702cfe90ebc67737b8482 (patch)
treeff5b4cc9e373d33a795d50d9333e05549bd9f2b8 /include/lib/ArduinoJson/Memory/Alignment.hpp
parent42e7fdf01c3a5701bb51e93ad6c650c3dbbc5450 (diff)
import ArduinoJson 6.18.0
Diffstat (limited to 'include/lib/ArduinoJson/Memory/Alignment.hpp')
-rw-r--r--include/lib/ArduinoJson/Memory/Alignment.hpp60
1 files changed, 60 insertions, 0 deletions
diff --git a/include/lib/ArduinoJson/Memory/Alignment.hpp b/include/lib/ArduinoJson/Memory/Alignment.hpp
new file mode 100644
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+++ b/include/lib/ArduinoJson/Memory/Alignment.hpp
@@ -0,0 +1,60 @@
+// ArduinoJson - https://arduinojson.org
+// Copyright Benoit Blanchon 2014-2021
+// MIT License
+
+#pragma once
+
+#include <ArduinoJson/Namespace.hpp>
+
+#include <stddef.h> // size_t
+
+namespace ARDUINOJSON_NAMESPACE {
+
+#if ARDUINOJSON_ENABLE_ALIGNMENT
+
+inline bool isAligned(size_t value) {
+ const size_t mask = sizeof(void *) - 1;
+ size_t addr = value;
+ return (addr & mask) == 0;
+}
+
+inline size_t addPadding(size_t bytes) {
+ const size_t mask = sizeof(void *) - 1;
+ return (bytes + mask) & ~mask;
+}
+
+template <size_t bytes>
+struct AddPadding {
+ static const size_t mask = sizeof(void *) - 1;
+ static const size_t value = (bytes + mask) & ~mask;
+};
+
+#else
+
+inline bool isAligned(size_t) {
+ return true;
+}
+
+inline size_t addPadding(size_t bytes) {
+ return bytes;
+}
+
+template <size_t bytes>
+struct AddPadding {
+ static const size_t value = bytes;
+};
+
+#endif
+
+template <typename T>
+inline bool isAligned(T *ptr) {
+ return isAligned(reinterpret_cast<size_t>(ptr));
+}
+
+template <typename T>
+inline T *addPadding(T *p) {
+ size_t address = addPadding(reinterpret_cast<size_t>(p));
+ return reinterpret_cast<T *>(address);
+}
+
+} // namespace ARDUINOJSON_NAMESPACE