minor changes

sysdata/libraries/stn/src/string.hb

@@ -3,8 +3,6 @@ length := fn(ptr: ^u8): int {
 	loop if *(ptr + len) == 0 break else len += 1
 	return len
 }
-
-// WTFFF is wrong with display_int
 display_int := fn(num: int, p: ^u8): ^u8 {
 	ptr := p
 	negative := num < 0
@@ -12,37 +10,42 @@ display_int := fn(num: int, p: ^u8): ^u8 {
 		num = -num
 	}
 	if num == 0 {
-		*ptr = 48
-		ptr += 1
-	} else {
+		*p = 48;
+		*(p + 1) = 0
+		return p
+	}
+
+	neg := false
+	if num < 0 {
+		neg = true
+		num = -num
+	}
+
 	loop if num == 0 break else {
-			*ptr = num % 10 + 48
-			ptr += 1
+		*(p + i) = num % 10 + 48
 		num /= 10
+		i += 1
 	}
+
+	if neg {
+		*(p + i) = 45
+		i += 1
 	}
-	if negative {
-		*ptr = 45
-		ptr += 1
-	};
-	*ptr = 0
-	@inline(reverse, p)
+
+	reverse(p, i)
+
 	return p
 }
 
-reverse := fn(s: ^u8): void {
-	//reverse a string, don't remove digits
-	len := 0
-	loop if *(s + len) == 0 break else len += 1
-	i := 0
-	j := len - 1
-	temp := 0
-	loop if i >= j break else {
-		temp = *(s + i);
-		*(s + i) = *(s + j);
-		*(s + j) = temp
-		i += 1
-		j -= 1
+reverse := fn(p: ^u8, len: int): void {
+	start := 0
+	end := len - 1
+	loop if start >= end break else {
+		temp := *(p + start);
+		*(p + start) = *(p + end);
+		*(p + end) = temp
+		start += 1
+		end -= 1
 	}
 	return
 }