tree b07fd8dfce88d34d347ffa6bdd3b57bcdcd9e125
parent b778c95c529faba19efffaf688deab99b45cee0a
author Barret Rhoden <brho@cs.berkeley.edu> 1532045203 -0400
committer Barret Rhoden <brho@cs.berkeley.edu> 1532096754 -0400

Add a macro to count the number of args to a macro

Usage:
	assert(MACRO_NR_ARGS() == 0);
or:
	#define foo(...) printk("Got %d\n", MACRO_NR_ARGS(__VA_ARGS__))

Signed-off-by: Barret Rhoden <brho@cs.berkeley.edu>