TempleOSTS_140317.ISO

Demo/SubIntAccess.CPP

@@ -0,0 +1,30 @@
+/*
+TempleOS has a feature that allows
+access to bytes and words of larger
+integers.
+
+See $LK,"U64i union",A="FF:::/Kernel/Adam1a.HPP,U64i union"$.
+ 
+The versions with "i" are internal data types.
+Use "I64" instead of "U64i" and you
+will have access to subbytes and
+subwords.
+
+Unfortunately, byte access causes the
+compiler to not use a reg for the
+variable.
+
+See $LK,"::/Demo/Lectures/FixedPoint.CPP"$.
+*/
+
+I64 q=0xFEDCBA9876543210,q1;
+
+"q\t\t=%016X\n",q;
+q1=q.i16[2];
+"q.i16[2]\t=%016X\n",q1;
+q1=q.u8[5];
+"q.u8[5]\t\t=%016X\n",q1;
+q1=q.i32[1].u8[2];
+"q.i32[1].u8[2]\t=%016X\n",q1;
+q1=q.i32[0].i8[1];
+"q.i32[0].i8[1]\t=%016X\n",q1;