1 files changed, 45 insertions, 0 deletions
diff --git a/miniany/libc-hosted.c b/miniany/libc-hosted.c
index c6c1e69..e599b1d 100644
--- a/miniany/libc-hosted.c
+++ b/miniany/libc-hosted.c
@@ -4,6 +4,7 @@
  */
 
 #define _XOPEN_SOURCE 600
+#include <bsd/string.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <ctype.h>
@@ -27,3 +28,47 @@ int putnl( void )
 {
 	return puts( "" );
 }
+
+/* TODO: duplicate of functions in libc-freestanding.c */
+
+static void strreverse( char *s )
+{
+	char *end = s + strlen( s ) - 1;
+	
+	while( s < end ) {
+		*s ^= *end;
+		*end ^= *s;
+		*s ^= *end;
+		s++;
+		end--;
+	}
+}
+    
+char *itoa( int v, char *s, int base )
+{
+	static char digit[] = "0123456789ABCDEF";
+	int sign = 0;
+	char *p = s;
+	
+	if( base < 2 || base > 16 ) {
+		return NULL;
+	}
+	
+	if( v < 0 ) {
+		v = -v;
+		sign = 1;
+	} 
+	
+	do {
+		*p++ = digit[v % base];
+	} while( ( v /= base ) > 0 );
+
+	if( sign ) {
+		*p++ = '-';
+	}
+	*p = '\0';
+	
+	strreverse( s );
+	
+	return s;
+}