v.util: add an iabs(x) helper (#9172)

vlib/v/fmt/fmt.v

@@ -568,11 +568,6 @@ pub fn (mut f Fmt) sum_type_decl(node ast.SumTypeDecl) {
 	f.comments(node.comments, has_nl: false)
 }
 
-[inline]
-fn abs(v int) int {
-	return if v >= 0 { v } else { -v }
-}
-
 pub fn (mut f Fmt) interface_decl(node ast.InterfaceDecl) {
 	if node.is_pub {
 		f.write('pub ')

vlib/v/fmt/struct.v

@@ -75,7 +75,8 @@ fn (mut list []CommentAndExprAlignInfo) add_info(attrs_len int, type_len int, li
 		list.add_new_info(attrs_len, type_len, line)
 		return
 	}
-	d_len := abs(list[i].max_attrs_len - attrs_len) + abs(list[i].max_type_len - type_len)
+	d_len := util.iabs(list[i].max_attrs_len - attrs_len) +
+		util.iabs(list[i].max_type_len - type_len)
 	if !(d_len < fmt.threshold_to_align_struct) {
 		list.add_new_info(attrs_len, type_len, line)
 		return

vlib/v/util/util.v

@@ -363,6 +363,11 @@ pub fn imax(a int, b int) int {
 	return if a > b { a } else { b }
 }
 
+[inline]
+pub fn iabs(v int) int {
+	return if v > 0 { v } else { -v }
+}
+
 pub fn replace_op(s string) string {
 	if s.len == 1 {
 		last_char := s[s.len - 1]