1 files changed, 35 insertions, 0 deletions
diff --git a/mg2d.h b/mg2d.h
index 4ccb5da..2682918 100644
--- a/mg2d.h
+++ b/mg2d.h
@@ -95,6 +95,41 @@ enum MG2DDiffCoeff {
     MG2D_DIFF_COEFF_NB,
 };
 
+enum MG2DLogLevel {
+    /**
+     * The log message indicates abnormal program failure. Should never happen
+     * unless there are bugs or grossly invaid user input.
+     * Will typically be followed by program termination.
+     */
+    MG2D_LOG_FATAL = 0x0,
+    /**
+     * The log message indicates an error state, so that requested operation
+     * cannot complete successfully.
+     * Will typically be followed by the API function being called returning an
+     * error.
+     */
+    MG2D_LOG_ERROR = 0x10,
+    /**
+     * The log message indicates a suspicious or suboptimal program state.
+     */
+    MG2D_LOG_WARNING = 0x20,
+    /**
+     * The log message provides commonly useful information about normal program
+     * behaviour.
+     */
+    MG2D_LOG_INFO = 0x30,
+    /**
+     * The log message provides detailed extra information about normal program
+     * behaviour.
+     */
+    MG2D_LOG_VERBOSE = 0x40,
+    /**
+     * The log message provides highly detailed extra information about normal
+     * program behaviour.
+     */
+    MG2D_LOG_DEBUG = 0x50,
+};
+
 typedef struct MG2DInternal MG2DInternal;
 
 /**