A Fish function for doing floating points calculations

math.fish

function math --description 'Perform math calculations in bc'
	if count $argv >  /dev/null
		switch $argv[1]
		case -h --h --he --hel --help
			__fish_print_help math
			return 0
		end
		set -lx LC_NUMERIC C
		set -lx BC_LINE_LENGTH 0
		set -l out (echo $argv | bc)
		test -z "$out"
		and return 1
		echo $out
		switch $out
		case 0
			return 1
		end
		return 0
	end
	return 2
end