> ## Documentation Index
> Fetch the complete documentation index at: https://cofhe-docs.fhenix.zone/llms.txt
> Use this file to discover all available pages before exploring further.

# Bitwise Operations

> and, or, xor, not, shl, shr, rol, ror — encrypted bitwise operations

Bitwise logic operations work on `ebool | euint8 | euint16 | euint32 | euint64 | euint128`. Shift and rotate operations work on `euint8 | euint16 | euint32 | euint64 | euint128` only.

## Logic

### and

```solidity theme={null}
euint8 result = FHE.and(a, b);
ebool result = FHE.and(x, y);
```

### or

```solidity theme={null}
euint8 result = FHE.or(a, b);
ebool result = FHE.or(x, y);
```

### xor

```solidity theme={null}
euint8 result = FHE.xor(a, b);
ebool result = FHE.xor(x, y);
```

### not

```solidity theme={null}
euint8 result = FHE.not(a);
ebool result = FHE.not(x);
```

## Shift & Rotate

### shl

Shift left.

```solidity theme={null}
euint32 result = FHE.shl(value, shiftAmount);
```

### shr

Shift right.

```solidity theme={null}
euint32 result = FHE.shr(value, shiftAmount);
```

### rol

Rotate left.

```solidity theme={null}
euint32 result = FHE.rol(value, rotateAmount);
```

### ror

Rotate right.

```solidity theme={null}
euint32 result = FHE.ror(value, rotateAmount);
```