initial commit - import mediafire-shell sources

macros.h

@@ -0,0 +1,34 @@
+#ifndef _MACROS_H_
+#define _MACROS_H_
+
+// calculate the absolute value on a 2s-complement system
+#define ABSINT(x)   ((x^(x>>((sizeof(x)*8)-1)))-(x>>((sizeof(x)*8)-1)))
+
+// count the number of elements in the first axis of an array
+#define DIM(x)      (sizeof(x)/sizeof(x[0]))
+
+// portable implementation of getpagesize().  see NOTE 1 below.
+#if (!defined getpagesize) && (defined _SC_PAGESIZE)
+#define getpagesize(x)  (sysconf(_SC_PAGESIZE))
+#endif
+#if (!defined getpagesize) && (defined _SC_PAGE_SIZE)
+#define getpagesize(x)  (sysconf(_SC_PAGE_SIZE))
+#endif
+
+/*
+    Note 1: Regarding getpagesize()
+
+    In SUSv2 the getpagesize() call is labeled LEGACY, and in POSIX.1-2001
+    it has been dropped;  HP-UX does not have this call.
+
+    I suspect on most systems that do have getpagesize() it is a macro so
+    we'll assume it to be.  If not, we'll define it ourselves.
+
+    Note: That on some systems both _SC_PAGESIZE and _SC_PAGE_SIZE are
+    interchangeable so we'll try both.
+*/
+
+
+
+#endif
+