Module:Utils: Difference between revisions
prime_factorization_raw() added for use in other modules |
Moving signum() to Module:Utils |
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| Line 117: | Line 117: | ||
end | end | ||
return table.concat(powers, " × ") | return table.concat(powers, " × ") | ||
end | |||
-- returns signum(x); cannot be used with {{#invoke:}} | |||
function p.signum(x) | |||
if type(x) ~= 'number' then | |||
return 0 | |||
end | |||
if x > 0 then return 1 end | |||
if x < 0 then return -1 end | |||
return 0 | |||
end | end | ||
return p | return p | ||