[PATCH] Document atomic fetch and nand

[Jeff Law]

On 1/8/19 11:35 PM, Sebastian Huber wrote:
> Copy code example for fetch and nand from "Legacy __sync Built-in
> Functions for Atomic Memory Access" to "Built-in Functions for Memory
> Model Aware Atomic Operations".
> 
> gcc/
> 
> 	* doc/extend.texi (Built-in Functions for Memory Model Aware
> 	Atomic Operations): Document atomic fetch and nand.
OK
jeff