[complement-svn] SF.net SVN: complement: [1541] trunk/complement/explore/inquiry/shades/sign /char.c

[<com...@us...>]

Revision: 1541
          http://svn.sourceforge.net/complement/?rev=1541&view=rev
Author:   complement
Date:     2007-03-06 05:27:00 -0800 (Tue, 06 Mar 2007)

Log Message:
-----------
signed/unsigned bit expantion

Modified Paths:
--------------
    trunk/complement/explore/inquiry/shades/sign/char.c

Modified: trunk/complement/explore/inquiry/shades/sign/char.c
===================================================================
--- trunk/complement/explore/inquiry/shades/sign/char.c	2007-02-28 17:21:00 UTC (rev 1540)
+++ trunk/complement/explore/inquiry/shades/sign/char.c	2007-03-06 13:27:00 UTC (rev 1541)
@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <stdint.h>
 
 int main()
 {
@@ -7,8 +8,29 @@
 
   unsigned int ui1 = (unsigned)c1;
   unsigned ui2 = (unsigned)c2;
+  /* unsigned ui3 = ~((1 << (sizeof(unsigned) * 8 - 1)) >> 3); */
+  unsigned ui3 = ~((1U << 31U) >> 3U);
+  uint64_t ui4 = ~((1ULL << 63ULL) >> 3ULL);
+  union {
+   uint64_t i64;
+   struct {
+     uint32_t lo;
+     uint32_t hi;
+   } i32;
+  } ui5;
 
-  printf( "%x\n", ui1 );
+  ui5.i64 = ui4;
 
+  printf( "%x %x %llx %x\n", ui1, ui3, ui4, ui5.i32.hi );
+
+  ui4 = ((~0ULL) / 2ULL) >> 52ULL;
+
+  printf( "%llx\n", ui4 );
+  ui4 = ~0ULL >> 53;
+  printf( "%llx\n", ui4 );
+  ui4 = ~0ULL & (~0ULL << 53);
+  printf( "%llx\n", ui4 );
+
+
   return 0;
 }


This was sent by the SourceForge.net collaborative development platform, the world's largest Open Source development site.