diff options
Diffstat (limited to 'src/main')
| -rw-r--r-- | src/main/scala/Chisel/util/Math.scala | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/main/scala/Chisel/util/Math.scala b/src/main/scala/Chisel/util/Math.scala index 270301f0..5f8212d8 100644 --- a/src/main/scala/Chisel/util/Math.scala +++ b/src/main/scala/Chisel/util/Math.scala @@ -7,7 +7,10 @@ package Chisel /** Compute the log2 rounded up with min value of 1 */ object log2Up { - def apply(in: BigInt): Int = 1 max (in-1).bitLength + def apply(in: BigInt): Int = { + require(in >= 0) + 1 max (in-1).bitLength + } def apply(in: Int): Int = apply(BigInt(in)) } |