using sprintf on host for itoa (avoids code duplication iwht libc-freestanding.c)

1 files changed, 10 insertions, 39 deletions

diff --git a/miniany/libc-hosted.c b/miniany/libc-hosted.c
index e599b1d..f602de1 100644
--- a/miniany/libc-hosted.c
+++ b/miniany/libc-hosted.c
@@ -29,46 +29,17 @@ 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;
+	switch( base ) {
+		case 10:
+			sprintf( s, "%d", v );
+			return s;
+		case 16:
+			sprintf( s, "%x", v );
+			return s;
+			
+		default:
+			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;
 }