| odd | Clash.Class.Parity, Clash.Prelude |
| oddr | Clash.Xilinx.DDR |
| One | Clash.XException.Internal |
| OneHot | Clash.Annotations.BitRepresentation.Deriving |
| oneHotCounter | Clash.Examples.Internal |
| openFile | Clash.Explicit.SimIO |
| optional | Clash.Explicit.Prelude.Safe, Clash.Prelude.Safe, Clash.Explicit.Prelude, Clash.Prelude |
| or | |
| 1 (Function) | Clash.HaskellPrelude, Clash.Explicit.Prelude.Safe, Clash.Prelude.Safe, Clash.Explicit.Prelude, Clash.Prelude |
| 2 (Function) | Clash.Explicit.Verification, Clash.Verification |
| or# | |
| 1 (Function) | Clash.Sized.Internal.BitVector |
| 2 (Function) | Clash.Sized.Internal.Unsigned |
| 3 (Function) | Clash.Sized.Internal.Signed |
| or## | Clash.Sized.Internal.BitVector |
| Ord | Clash.HaskellPrelude, Clash.Explicit.Prelude.Safe, Clash.Prelude.Safe, Clash.Explicit.Prelude, Clash.Prelude |
| Ordering | Clash.HaskellPrelude, Clash.Explicit.Prelude.Safe, Clash.Prelude.Safe, Clash.Explicit.Prelude, Clash.Prelude |
| oscillate | |
| 1 (Function) | Clash.Explicit.Prelude.Safe, Clash.Explicit.Prelude |
| 2 (Function) | Clash.Prelude.Safe, Clash.Prelude |
| otherwise | Clash.HaskellPrelude, Clash.Explicit.Prelude.Safe, Clash.Prelude.Safe, Clash.Explicit.Prelude, Clash.Prelude |
| outputVerifier | Clash.Explicit.Testbench |
| outputVerifier' | |
| 1 (Function) | Clash.Explicit.Testbench, Clash.Explicit.Prelude |
| 2 (Function) | Clash.Prelude.Testbench |
| outputVerifierBitVector | Clash.Explicit.Testbench |
| outputVerifierBitVector' | |
| 1 (Function) | Clash.Explicit.Testbench |
| 2 (Function) | Clash.Prelude.Testbench |
| outputVerifierWith | Clash.Explicit.Testbench |
| Outro | |
| 1 (Type/Class) | Clash.Class.HasDomain.HasSpecificDomain |
| 2 (Type/Class) | Clash.Class.HasDomain.HasSingleDomain |
| Overflowing | Clash.Num.Overflowing |
| OverlapL | Clash.Annotations.BitRepresentation.Deriving |
| OverlapR | Clash.Annotations.BitRepresentation.Deriving |