Admin: 1 revision imported

2018-10-24T22:40:43Z

1 revision imported

Johnuniq: implement error=text parameter to return text if an error occurs; see Template talk:2018–19 NBA Northwest standings

2018-06-03T10:28:03Z

implement error=text parameter to return text if an error occurs; see Template talk:2018–19 NBA Northwest standings

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require('Module:No globals')

local p = {}

function p._main(n, d)
local num = tonumber(n)
if not num then
error('Unable to convert "' .. tostring(n) .. '" to a number')
end
local decimals = tonumber(d)
if not decimals then
error('Unable to convert "' .. tostring(d) .. '" to a number')
end
local maxDecimals = 14 - math.floor(math.log10(num)) -- to allow a maximum of 15 significant figures, which is the highest guaranteed correct with doubles
if decimals > maxDecimals then decimals = maxDecimals end
local mult = 10^decimals
num = math.floor(num * mult + 0.5) / mult
if decimals < 0 then
return tostring(num)
else
return string.format('%.' .. decimals .. 'f', num)
end
end

function p.main(frame)
local args, pargs = frame.args, frame:getParent().args
local function work()
return p._main(
mw.ext.ParserFunctions.expr(args[1] or pargs[1]),
mw.ext.ParserFunctions.expr(args[2] or pargs[2])
)
end
local success, result = pcall(work)
if success then
return result
end
local errtext = args.error or pargs.error
if errtext then
return errtext
end
error(result, 0)
end

return p

← Older revision	Revision as of 22:40, 24 October 2018
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Module:Decimals - Revision history

Admin: 1 revision imported

Johnuniq: implement error=text parameter to return text if an error occurs; see Template talk:2018–19 NBA Northwest standings