break apart c libaray

1 files changed, 27 insertions, 0 deletions

diff --git a/kernel/lib/uxtoa.c b/kernel/lib/uxtoa.c
new file mode 100644
index 0000000..9133d29
--- /dev/null
+++ b/kernel/lib/uxtoa.c
@@ -0,0 +1,27 @@
+#include <lib.h>
+
+#define UXTOA(type, name)                                \
+	char *name(unsigned type n, char *buffer, int radix) \
+	{                                                    \
+		if (n == 0) {                                    \
+			buffer[0] = '0';                             \
+			buffer[1] = '\0';                            \
+			return buffer + 1;                           \
+		}                                                \
+		char *start = buffer;                            \
+		for (; n; n /= radix) {                          \
+			*buffer++ = itoc(n % radix);                 \
+		}                                                \
+		char *buf_end = buffer;                          \
+		*buffer-- = '\0';                                \
+		while (buffer > start) {                         \
+			char tmp = *start;                           \
+			*start++ = *buffer;                          \
+			*buffer-- = tmp;                             \
+		}                                                \
+		return buf_end;                                  \
+	}
+
+UXTOA(int, utoa)
+UXTOA(long int, ultoa)
+UXTOA(long long int, ulltoa)