local ffi = require 'ffi'
local help_files = {'graphics', 'matrix', 'iter', 'integ', 'ode', 'nlfit', 'vegas', 'rng', 'fft'}
local cdata_table = {'matrix', 'complex matrix', 'complex'}
local function help_init( ... )
	local REG = debug.getregistry()
	REG['GSL.help_hook'] = {}
end
local function open_module(modname)
	local fullname = string.format('help/%s', modname)
	local m = require(fullname)
	return m
end
local function search_help(func)
	for k, modname in ipairs(help_files) do
		local mt = getmetatable(func)
		local module = open_module(modname)
		if module[func] then
			local help_text = module[func]
			return help_text
	 end
	end
end
help_init()
-- declare a global function
function help(x)
	local txt
	if type(x) == 'function' then
		txt = search_help(x)
	elseif type(x) == 'userdata' then
		local mt = getmetatable(x)
		if mt then txt = search_help(mt) end
	elseif type(x) == 'cdata' then
		local cname = gsl_type(x)
		if cname then txt = search_help(cname) end
	end
	print(txt or "No help found for the given function")
end
</div><div class="naked_ctrl">
<form action="/index.cgi/contrast" method="get" name="gate">
<p><a href="http://altstyle.alfasado.net">AltStyle</a> によって変換されたページ <a href="https://cgit.git.savannah.gnu.org/cgit/gsl-shell.git/plain/help.lua?id=0717a95287bdb4db6121320f4da3e2b28d3e015c">(-&gt;オリジナル)</a>
/ <label>アドレス: <input type="text" name="naked_post_url" value="https://cgit.git.savannah.gnu.org/cgit/gsl-shell.git/plain/help.lua?id=0717a95287bdb4db6121320f4da3e2b28d3e015c" size="22" /></label> <label>モード: <select name="naked_post_mode">
<option value="default">デフォルト</option>
<option value="speech">音声ブラウザ</option>
<option value="ruby">ルビ付き</option>
<option value="contrast" selected="selected">配色反転</option>
<option value="larger-text">文字拡大</option>
<option value="mobile">モバイル</option>
</select>
<input type="submit" value="表示" />
</p>
</form>
</div>