1 files changed, 42 insertions, 0 deletions
diff --git a/bit/bit.h b/bit/bit.h
new file mode 100755
index 0000000..9e1b09a
--- /dev/null
+++ b/bit/bit.h
@@ -0,0 +1,42 @@
+#ifndef BIT_H
+#define BIT_H
+
+/*
+	Most of these functions are courtesy of
+	Hacker's Delight, 2nd edition (Henry S. Warren, Jr.)
+*/
+
+#include <stdio.h>
+#include "types/types.h"
+
+
+// rounds down (floors) to the nearest power of 2
+u64 flp2(u64 x);
+
+// rounds down (floors) to the nearest power of 2 in 32 bits
+u32 flp2_32(u32 x);
+
+// rounds up (ceils) to the nearest power of 2
+u64 clp2(u64 x);
+
+// rounds up (ceils) to the nearest power of 2 in 32 bits
+u32 clp2_32(u32 x);
+
+// prints the bits of the data pointed to by ptr of size size to fp
+void _bitstofile(void const * const ptr, size_t const size, FILE *fp);
+
+#define fprintb(n, f) ({	\
+		typeof(n) _n = (n);	\
+		_bitstofile(&(_n), sizeof(_n), f);	\
+	})
+
+#define printb(n) fprintb(n, stdout)
+
+#define fputb(n, f) ({	\
+		fprintb(n, f);	\
+		fputc('\n', f);	\
+	})
+
+#define putb(n) fputb(n, stdout)
+
+#endif