core.BaseQuarterRound: use better methods

8d984e3e · Minyong Li · d80a482c · 8d984e3e
Verified Commit 8d984e3e authored Aug 23, 2021 by Minyong Li 💬
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src/main/scala/uk/ac/soton/ecs/can/core/BaseQuarterRound.scala ...ain/scala/uk/ac/soton/ecs/can/core/BaseQuarterRound.scala +1 -2

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--- a/src/main/scala/uk/ac/soton/ecs/can/core/BaseQuarterRound.scala
+++ b/src/main/scala/uk/ac/soton/ecs/can/core/BaseQuarterRound.scala
@@ -9,6 +9,5 @@ abstract class BaseQuarterRound extends MultiIOModule {
  val in = IO(Input(Vec(4, UInt(32.W))))
  val out = IO(Output(Vec(4, UInt(32.W))))

-  protected def rotateLeft(v: UInt, b: Int): UInt =
-    v(31 - b, 0) ## v(31, 32 - b)
+  protected def rotateLeft(v: UInt, b: Int): UInt = v.tail(b) ## v.head(b)
 }