; Some extremely badly conditioned problems.
; These cannot be solved accurately without using higher precision
; than what Mercury uses.

; Mercury fails, but at least it doesn't give wrong answers.
; Reference: U. W. Kulisch, W. L. Miranker, SIAM Review (March 1986).

; The true answer is a = 12345678912345,
; but an enormous cancellation makes it difficult to calculate.
 a = 12345678912345*9876543219876 - 12345678912345*9876543219875

; a very nearly singular linear system
 64919121  *x - 159018721*y = 1
 41869520.5*x - 102558961*y = 0