On 12/08/12 01:31, Walter Bright wrote:
On 8/11/2012 3:01 PM, F i L wrote:
Walter Bright wrote:
I'd rather have a 100 easy to find bugs than 1 unnoticed one that
went out in
the field.
That's just the thing, bugs are arguably easier to hunt down when
things default
to a consistent, usable value.
Many, many programming bugs trace back to assumptions that floating
point numbers act like ints. There's just no way to avoid knowing and
understanding the differences.
Exactly. I have come to believe that there are very few algorithms
originally designed for integers, which also work correctly for floating
point.
Integer code nearly always assumes things like, x + 1 != x, x == x,
(x + y) - y == x.
for (y = x; y < x + 10; y = y + 1) { .... }
How many times does it loop?
