1 files changed, 36 insertions, 0 deletions
diff --git a/prism/compiler/align.h b/prism/compiler/align.h
new file mode 100644
index 0000000000..22cb49a48c
--- /dev/null
+++ b/prism/compiler/align.h
@@ -0,0 +1,36 @@
+/**
+ * @file compiler/align.h
+ */
+#ifndef PRISM_COMPILER_ALIGN_H
+#define PRISM_COMPILER_ALIGN_H
+
+/**
+ * Compiler-agnostic macros for specifying alignment of types and variables.
+ */
+#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L /* C11 or later */
+    /** Specify alignment for a type or variable. */
+    #define PRISM_ALIGNAS _Alignas
+
+    /** Get the alignment requirement of a type. */
+    #define PRISM_ALIGNOF _Alignof
+#elif defined(__GNUC__) || defined(__clang__)
+    /** Specify alignment for a type or variable. */
+    #define PRISM_ALIGNAS(size) __attribute__((aligned(size)))
+
+    /** Get the alignment requirement of a type. */
+    #define PRISM_ALIGNOF(type) __alignof__(type)
+#elif defined(_MSC_VER)
+    /** Specify alignment for a type or variable. */
+    #define PRISM_ALIGNAS(size) __declspec(align(size))
+
+    /** Get the alignment requirement of a type. */
+    #define PRISM_ALIGNOF(type) __alignof(type)
+#else
+    /** Void because this platform does not support specifying alignment. */
+    #define PRISM_ALIGNAS(size)
+
+    /** Fallback to sizeof as alignment requirement of a type. */
+    #define PRISM_ALIGNOF(type) sizeof(type)
+#endif
+
+#endif