Re: [Gambas-user] Difference DateDiff(...) ?

2017-08-06 Thread Tony Morehen
You're right. Print is not the problem. Another part of Gambas could raise an error. But Benoit is right. Doing this kind of check is too resource intensive. You're also right. Since DateDiff(gb.second) will overflow for a ~70 year difference, over the longer term, it should return a long

Re: [Gambas-user] Difference DateDiff(...) ?

2017-08-06 Thread d4t4full
Toni, I don't think Print is at fault here at all. My guess is that DateDiff may need an "attitude adjustment" in these cases: It may need to either raise an overflow error or return a 64bit Long. Hope this helps, zxMarce. On Aug 6, 2017, 12:00, at 12:00, Tony Morehen wrote: >zxMarce, you a

Re: [Gambas-user] Difference DateDiff(...) ?

2017-08-06 Thread Tony Morehen
zxMarce, you are exactly right. DateDiff returns an integer so when print adds the two datediff it adds 2 signed integers and gets an signed integer. Since the max value of a signed integer is 2147483647, the answer of 2208988800 overflows to -2085978496. So print's behaviour is as expected.

Re: [Gambas-user] Difference DateDiff(...) ?

2017-08-06 Thread d4t4full
Without a machine nearby, I'd risk you're in the right track. The DIM AS LONG creates 64bit vars while DateDiff may return 32bit data (don't have the docs with me). Print will use 64bit to print the vars and 32bit with direct DateDiff (you may confirm by using CLng to affect the DateDiff's in t

[Gambas-user] Difference DateDiff(...) ?

2017-08-06 Thread Hans Lehmann
Hello, Why are two different results: Public Sub Main() Dim a, b As Long a = DateDiff("01/01/1900", "01/01/1935", gb.Second) b = DateDiff("01/01/1935", "01/01/1970 ", gb.Second) Print a + b Print DateDiff("01/01/1900", "01/01/1935", gb.Second) + DateDiff("01/01/1935", "01/01/1970 ",