>Check "Visual FoxPro System Capacities" in Help. I guess the computations up to 15 digits can give the correct numbers.
Sure, the numbers Fabio showed are beyond the system capabilities. But the point is, some of them give error messages, and some give only seemingly random results, without indicating, with any error, that something went wrong. Nothing you can trap with TRY for example.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)
