Added result.h.

nx/include/switch.h

@@ -9,6 +9,7 @@ extern "C" {
 #endif
 
 #include <switch/types.h>
+#include <switch/result.h>
 #include <switch/svc.h>
 
 #ifdef __cplusplus

nx/include/switch/result.h

@@ -0,0 +1,20 @@
+/**
+ * @file result.h
+ * @brief Switch result code tools
+ */
+#pragma once
+#include "types.h"
+
+/// Checks whether a result code indicates success.
+#define R_SUCCEEDED(res)   ((res)==0)
+/// Checks whether a result code indicates failure.
+#define R_FAILED(res)      ((res)!=0)
+/// Returns the module ID of a result code.
+#define R_MODULE(res)      ((res)&0x1FF)
+/// Returns the description of a result code.
+#define R_DESCRIPTION(res) (((res)>>9)&0x1FFF)
+
+/// Builds a result code from its constituent components.
+#define MAKERESULT(module,description) \
+	((((module)&0x1FF)) | ((description)&0x1FFF)<<9)
+