1 files changed, 37 insertions, 0 deletions
diff --git a/2/homework/shift_by_w_minus_k.c b/2/homework/shift_by_w_minus_k.c
new file mode 100644
index 0000000..de595c9
--- /dev/null
+++ b/2/homework/shift_by_w_minus_k.c
@@ -0,0 +1,37 @@
+#include <stdio.h>
+#include <limits.h>
+
+typedef unsigned char *byte_pointer;
+
+void show_bytes(byte_pointer start, size_t len) {
+    int i;
+    for (i = 0; i < len; i++) {
+        printf(" %.2x", start[i]);
+    }
+    printf("\n");
+}
+
+void show_int(int x) {
+    show_bytes((byte_pointer) &x, sizeof(int));
+}
+
+void show_float(float x) {
+    show_bytes((byte_pointer) &x, sizeof(float));
+}
+
+void show_pointer(void *x) {
+    show_bytes((byte_pointer) &x, sizeof(void *));
+}
+
+int main() {
+    int A = -1;
+    int w = sizeof(int)<<3;
+    int k = 0;
+    int shifted_off_by_one = (A<<(w-k - 1));
+    int shifted = shifted_off_by_one + shifted_off_by_one;
+    printf("w: %d, k: %d, A<<(w-k): %d\n", w, k, shifted);
+    show_int(shifted);
+
+    printf("%d\n", ((1<<(w - 1)) & INT_MAX) && 1);
+
+}