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authorAdam Carpenter <gitlab@53hor.net>2019-07-23 12:09:24 -0400
committerAdam Carpenter <gitlab@53hor.net>2019-07-23 12:09:24 -0400
commit552bc70b77d4fca54929b46190128721b93d887c (patch)
tree2793d5aff4fce6b27e1056f89b09b52d41134a4b /ch2/2-08.c
parente41bafc5885aac630b6d19893e9c80cc334497c2 (diff)
downloadlearning-c-552bc70b77d4fca54929b46190128721b93d887c.tar.xz
learning-c-552bc70b77d4fca54929b46190128721b93d887c.zip
Cleaned up directory.
Diffstat (limited to 'ch2/2-08.c')
-rw-r--r--ch2/2-08.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/ch2/2-08.c b/ch2/2-08.c
new file mode 100644
index 0000000..9f7adbd
--- /dev/null
+++ b/ch2/2-08.c
@@ -0,0 +1,21 @@
+#include<stdio.h>
+
+/*
+ * Returns the value of the integer x rotated to the right by n bit positions.
+ */
+
+unsigned rightrot(unsigned x, int n) {
+ unsigned mask = ~(~0 >> 1);
+
+ while (n-- > 0)
+ if (x & 1)
+ x = (x >> 1) | mask;
+ else
+ x >>= 1;
+
+ return x;
+}
+
+int main() {
+ printf("%x\n", rightrot(0xaa, 3));
+}