diff --git a/src/zeroes.rs b/src/zeroes.rs
index 67c5c75..30a59b9 100644
--- a/src/zeroes.rs
+++ b/src/zeroes.rs
@@ -2,31 +2,31 @@
 use crate::integer::Planar64;
 
 #[inline]
-pub fn zeroes2<'a>(a0:Planar64,a1:Planar64,a2:Planar64)->&'a [Planar64]{
-	if a2==Planar64::ZERO{
-		return zeroes1(a0,a1);
-	}
+pub fn zeroes2(a0:Planar64,a1:Planar64,a2:Planar64)->impl std::iter::IntoIterator{
+	// if a2==Planar64::ZERO{
+	// 	return zeroes1(a0,a1);
+	// }
 	let radicand=a1.get() as i128*a1.get() as i128-a2.get() as i128*a0.get() as i128*4;
 	if 0<radicand{
 		//start with f64 sqrt
 		let planar_radicand=Planar64::raw(unsafe{(radicand as f64).sqrt().to_int_unchecked()});
 		//TODO: one or two newtons
 		if Planar64::ZERO<a2{
-			[(-a1-planar_radicand)/(a2*2),(-a1+planar_radicand)/(a2*2)].as_slice()
+			[(-a1-planar_radicand)/(a2*2),(-a1+planar_radicand)/(a2*2)].into_iter()
 		}else{
-			[(-a1+planar_radicand)/(a2*2),(-a1-planar_radicand)/(a2*2)].as_slice()
+			[(-a1+planar_radicand)/(a2*2),(-a1-planar_radicand)/(a2*2)].into_iter()
 		}
 	}else if radicand==0{
-		[a1/(a2*-2)].as_slice()
+		[a1/(a2*-2),Planar64::ZERO].into_iter()
 	}else{
-		&[]
+		[Planar64::ZERO,Planar64::ZERO].into_iter()
 	}
 }
 #[inline]
-pub fn zeroes1<'a>(a0:Planar64,a1:Planar64)->&'a [Planar64]{
+pub fn zeroes1(a0:Planar64,a1:Planar64)->impl std::iter::IntoIterator{
 	if a1==Planar64::ZERO{
-		&[]
+		return [Planar64::ZERO].into_iter();
 	}else{
-		[-a0/a1].as_slice()
+		return [-a0/a1].into_iter();
 	}
 }
\ No newline at end of file