Added more definitions.

Headers/SagittariusInst.h

@@ -34,7 +34,7 @@ typedef enum SagittariusInstDef
      * |0|1|2..7|8..15(another instruction struct)|
      * |set|length(1-8 bytes)|padding|payload|
      */
-    set,
+        set,
     /**
      * Move data from one register to another.
      * Layout:
@@ -128,10 +128,13 @@ typedef enum SagittariusInstDef
      */
     syscall,
     /**
-     * Test System Call
+     * Test System Call, for its existence.
+     * 
      * Layout:
      * |0|1|2|3|
      * |tsyscall|namespace reg| function id reg| result reg|
+     * 
+     * 0 - failed, 1 - success, other values are reserved for future use.
      */
     tsyscall,
 } SagittariusInstDef;
@@ -157,6 +160,7 @@ typedef enum math1op
     sag_math1_acos,
     sag_math1_atan,
     sag_math1_abs,
+    sag_math1_exp,
 } math1op;
 typedef enum sagittarius_type
 {