std: Fix tuple lexicographical order

Use the definition, where R is <, <=, >=, or >

    [x, ..xs] R [y, ..ys]  =  if x != y { x R y } else { xs R ys }

Previously, tuples would only implement < and derive the other
comparisons from it; this is incorrect. Included are several testcases
involving NaN comparisons that are now correct.

Previously, tuples would consider an element equal if both a < b and
b < a were false, this was also incorrect.

0 files changed, 0 insertions, 0 deletions