17.mdx

fork	group
Frontier	Comparison & Bitwise Logic Operations

Index 1 is top of the stack. See PUSH.

Stack input

0. a: first binary value.
1. b: second binary value.

Stack output

0. a | b: the bitwise OR result.

Examples

*	Input	Output	*	*	Input	Output
1	0xF0	0xFF	*	1	0xFF	0xFF
2	0xF		*	2	0xFF

Reproduce in playground.

Error cases

The state changes done by the current context are reverted in those cases:

• Not enough gas.
• Not enough values on the stack.