On 16 Dec 2006 at 10:56, Marcel Kilgus wrote:
Wolfgang Lenerz wrote:
On an ordinary QL I can type
f%=-32768/1
and find that f% now contains -32768.
Well that must be a nice bug.
unless I'm mistaken, 32768/1 = 32768
and 32768 just doesn't fit in an integer.
Yes, but
On Sun, 17 Dec 2006 16:39:56 -, Wolfgang Lenerz
[EMAIL PROTECTED] wrote:
On 16 Dec 2006 at 10:56, Marcel Kilgus wrote:
Wolfgang Lenerz wrote:
On an ordinary QL I can type
f%=-32768/1
and find that f% now contains -32768.
Well that must be a nice bug.
unless I'm
Marcel Kilgus writes:
Still it's a bug and I'll try to investigate when I find the time. But
n = -32768/1: n% = n
throws an overflow error
n = -32768: n% = n
is ok
Doing a
PRINT FLOAT$(-32768/1) gives $0810 C000
while
PRINT FLOAT$(-32768 DIV 1) gives $080F 8000
Its not
Rich Mellor wrote:
On Sun, 17 Dec 2006 16:39:56 -, Wolfgang Lenerz
[EMAIL PROTECTED] wrote:
On 16 Dec 2006 at 10:56, Marcel Kilgus wrote:
Wolfgang Lenerz wrote:
On an ordinary QL I can type
f%=-32768/1
and find that f% now contains -32768.
Well that
P Witte wrote:
Marcel Kilgus writes:
Still it's a bug and I'll try to investigate when I find the time. But
n = -32768/1: n% = n
throws an overflow error
n = -32768: n% = n
is ok
Doing a
PRINT FLOAT$(-32768/1) gives $0810 C000
You've detected the cause of
Laurence W Reeves writes:
n=-32768/1:n2=n*n:PRINT n2? I'd hazard a guess that one might get
something like $0821 2000 .
Actually $081F 4000
To a degree, calculations on the stack /may/ normalise values, but
there's no guarantee. Also, it will be no surprise that one of
Laurence W Reeves wrote:
PRINT FLOAT$(-32768/1) gives $0810 C000
You've detected the cause of the bug! SMSQ/E has allowed a unnormalised
value to get on the stack.
True. I found the following line in the code:
[...]
cmp.l #$c00,d1 ; funny value?
[...]
So there
Marcel Kilgus wrote:
Laurence W Reeves wrote:
PRINT FLOAT$(-32768/1) gives $0810 C000
You've detected the cause of the bug! SMSQ/E has allowed a unnormalised
value to get on the stack.
True. I found the following line in the code:
[...]
cmp.l #$c00,d1
On 15 Dec 2006 at 15:57, George Gwilt wrote:
On an ordinary QL I can type
f%=-32768/1
and find that f% now contains -32768.
Well that must be a nice bug.
unless I'm mistaken, 32768/1 = 32768
and 32768 just doesn't fit in an integer.
Try this on the current versions of SMSQE (on Q60 or
Wolfgang Lenerz wrote:
On an ordinary QL I can type
f%=-32768/1
and find that f% now contains -32768.
Well that must be a nice bug.
unless I'm mistaken, 32768/1 = 32768
and 32768 just doesn't fit in an integer.
Yes, but -32768 does. Notice the minus ;-)
Marcel
Marcel Kilgus writes:
Wolfgang Lenerz wrote:
On an ordinary QL I can type
f%=-32768/1
and find that f% now contains -32768.
Well that must be a nice bug.
unless I'm mistaken, 32768/1 = 32768
and 32768 just doesn't fit in an integer.
Yes, but -32768 does. Notice the minus ;-)
Ah,
Wolfgang Lenerz wrote:
On an ordinary QL I can type
f%=-32768/1
and find that f% now contains -32768.
Well that must be a nice bug.
unless I'm mistaken, 32768/1 = 32768
and 32768 just doesn't fit in an integer.
Yes, but -32768 does. Notice the minus ;-)
Marcel
As an interesting
P Witte wrote:
Marcel Kilgus writes:
Wolfgang Lenerz wrote:
On an ordinary QL I can type
f%=-32768/1
and find that f% now contains -32768.
Well that must be a nice bug.
unless I'm mistaken, 32768/1 = 32768
and 32768 just doesn't fit in an integer.
Yes,
On 16 Dec 2006, at 17:01, Laurence W Reeves wrote:
P Witte wrote:
Marcel Kilgus writes:
Wolfgang Lenerz wrote:
On an ordinary QL I can type
f%=-32768/1
and find that f% now contains -32768.
Well that must be a nice bug.
unless I'm mistaken, 32768/1 = 32768
and 32768 just
Laurence W Reeves writes:
P Witte wrote:
Marcel Kilgus writes:
Wolfgang Lenerz wrote:
On 15 Dec 2006 at 15:57, George Gwilt wrote:
On an ordinary QL I can type
f%=-32768/1
and find that f% now contains -32768.
Well that must be a nice bug.
unless I'm mistaken, 32768/1 = 32768
and
Laurence W Reeves wrote:
This strikes me as a *very* serious bug.
I don't quite think so. It's easily detectable, i.e. doesn't give a
wrong result that could go unnoticed but is a hard error. Despite this
fact it's been in there for probably well over a decade, so in the end
it can't have been
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