beginning to lift vmem ops out of the arena

code/base/time.h

@@ -0,0 +1,62 @@
+#ifdef INTELLISENSE_DIRECTIVES
+#	pragma once
+#	include "base_types.h"
+#endif
+
+////////////////////////////////
+//~ allen: Time
+
+typedef enum WeekDay
+{
+  WeekDay_Sun,
+  WeekDay_Mon,
+  WeekDay_Tue,
+  WeekDay_Wed,
+  WeekDay_Thu,
+  WeekDay_Fri,
+  WeekDay_Sat,
+  WeekDay_COUNT,
+}
+WeekDay;
+
+typedef enum Month
+{
+  Month_Jan,
+  Month_Feb,
+  Month_Mar,
+  Month_Apr,
+  Month_May,
+  Month_Jun,
+  Month_Jul,
+  Month_Aug,
+  Month_Sep,
+  Month_Oct,
+  Month_Nov,
+  Month_Dec,
+  Month_COUNT,
+}
+Month;
+
+typedef struct DateTime DateTime;
+struct DateTime
+{
+  U16 micro_sec; // [0,999]
+  U16 msec; // [0,999]
+  U16 sec;  // [0,60]
+  U16 min;  // [0,59]
+  U16 hour; // [0,24]
+  U16 day;  // [0,30]
+  union
+  {
+    WeekDay week_day;
+    U32 wday;
+  };
+  union
+  {
+    Month month;
+    U32 mon;
+  };
+  U32 year; // 1 = 1 CE, 0 = 1 BC
+};
+
+typedef U64 DenseTime;