diff options
| author | Jack Koenig | 2022-01-10 10:39:52 -0800 |
|---|---|---|
| committer | Jack Koenig | 2022-01-10 15:53:55 -0800 |
| commit | 3131c0daad41dea78bede4517669e376c41a325a (patch) | |
| tree | 55baed78a6a01f80ff3952a08233ca553a19964f /src/main/scala/chisel3/util/random/PRNG.scala | |
| parent | dd36f97a82746cec0b25b94651581fe799e24579 (diff) | |
Apply scalafmt
Command:
sbt scalafmtAll
Diffstat (limited to 'src/main/scala/chisel3/util/random/PRNG.scala')
| -rw-r--r-- | src/main/scala/chisel3/util/random/PRNG.scala | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/src/main/scala/chisel3/util/random/PRNG.scala b/src/main/scala/chisel3/util/random/PRNG.scala index 3a44385a..2566c8d6 100644 --- a/src/main/scala/chisel3/util/random/PRNG.scala +++ b/src/main/scala/chisel3/util/random/PRNG.scala @@ -11,17 +11,17 @@ import chisel3.util.Valid */ class PRNGIO(val n: Int) extends Bundle { - /** A [[chisel3.util.Valid Valid]] interface that can be used to set the seed (internal PRNG state) + /** A [[chisel3.util.Valid Valid]] interface that can be used to set the seed (internal PRNG state) * @group Signals */ val seed: Valid[Vec[Bool]] = Input(Valid(Vec(n, Bool()))) - /** When asserted, the PRNG will increment by one + /** When asserted, the PRNG will increment by one * @group Signals */ val increment: Bool = Input(Bool()) - /** The current state of the PRNG + /** The current state of the PRNG * @group Signals */ val out: Vec[Bool] = Output(Vec(n, Bool())) @@ -34,7 +34,8 @@ class PRNGIO(val n: Int) extends Bundle { * @param updateSeed if true, when loading the seed the state will be updated as if the seed were the current state, if * false, the state will be set to the seed */ -abstract class PRNG(val width: Int, val seed: Option[BigInt], step: Int = 1, updateSeed: Boolean = false) extends Module { +abstract class PRNG(val width: Int, val seed: Option[BigInt], step: Int = 1, updateSeed: Boolean = false) + extends Module { require(width > 0, s"Width must be greater than zero! (Found '$width')") require(step > 0, s"Step size must be greater than one! (Found '$step')") @@ -51,7 +52,7 @@ abstract class PRNG(val width: Int, val seed: Option[BigInt], step: Int = 1, upd * the PRNG state should be manually reset to a safe value. [[LFSR]] handles this by, based on the chosen reduction * operator, either sets or resets the least significant bit of the state. */ - private [random] val state: Vec[Bool] = RegInit(resetValue) + private[random] val state: Vec[Bool] = RegInit(resetValue) /** State update function * @param s input state @@ -63,14 +64,15 @@ abstract class PRNG(val width: Int, val seed: Option[BigInt], step: Int = 1, upd * @param s input state * @return the next state after `step` applications of [[PRNG.delta]] */ - final def nextState(s: Seq[Bool]): Seq[Bool] = (0 until step).foldLeft(s){ case (s, _) => delta(s) } + final def nextState(s: Seq[Bool]): Seq[Bool] = (0 until step).foldLeft(s) { case (s, _) => delta(s) } - when (io.increment) { + when(io.increment) { state := nextState(state) } - when (io.seed.fire) { - state := (if (updateSeed) { nextState(io.seed.bits) } else { io.seed.bits }) + when(io.seed.fire) { + state := (if (updateSeed) { nextState(io.seed.bits) } + else { io.seed.bits }) } io.out := state |
