Does a lot of work towards the PIT

Added a math library, with clamp and POW.
added printf support for printing doubles
added a few helper functions in PIT for calcaulting the time in seconds of a clock cycle based on divisor

libc/math/clamp.c

@@ -0,0 +1,39 @@
+#include <stdint.h>
+#include <math.h>
+
+uint8_t clamp_u8(uint8_t val, uint8_t min, uint8_t max)
+{
+	if (val > max)
+		return max;
+	if (val < min)
+		return min;
+	return val;
+}
+
+uint16_t clamp_u16(uint16_t val, uint16_t min, uint16_t max)
+{
+	if (val > max)
+		return max;
+	if (val < min)
+		return min;
+	return val;
+}
+
+uint32_t clamp_u32(uint32_t val, uint32_t min, uint32_t max)
+{
+	if (val > max)
+		return max;
+	if (val < min)
+		return min;
+	return val;
+
+}
+
+uint64_t clamp_u64(uint64_t val, uint64_t min, uint64_t max)
+{	
+	if (val > max)
+		return max;
+	if (val < min)
+		return min;
+	return val;
+}