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  Topic: floaty problem (beginner)
Helen

Replies: 7
Views: 2836

PostForum: Support   Posted: Wed Apr 18, 2018 5:52 pm   Subject: yes, thanks!
Thanks for this... yes, I'll ride the learning curve like a trooper. Checked out that page (same one given earlier I think... great minds think alike!)
  Topic: floating number problem with write
Helen

Replies: 2
Views: 1700

PostForum: Support   Posted: Wed Apr 18, 2018 12:15 pm   Subject: cracked it!
my problem was to refer to a as an integer...
i had a=3 and in my equation i used the value 3.

Instead, I just changed that to 3.0 everywhere, and I'm good!
  Topic: floaty problem (beginner)
Helen

Replies: 7
Views: 2836

PostForum: Support   Posted: Wed Apr 18, 2018 12:12 pm   Subject: managed a workaround
Did a more accurate calculation on the iteration (instead of adding to previous, possibly wonky, value, I RE-calculated).

Thanks for this guys!
  Topic: floating number problem with write
Helen

Replies: 2
Views: 1700

PostForum: Support   Posted: Wed Apr 18, 2018 12:10 pm   Subject: floating number problem with write
Again, another little problem and I hope I'm not embarassing myself here...

Here is the simple code:

real*8 :: a
do i = 1, 2000
if (i>1) then
a= 3 + ((i-1)*((4-3)/1999))
end if
w ...
  Topic: floaty problem (beginner)
Helen

Replies: 7
Views: 2836

PostForum: Support   Posted: Tue Apr 17, 2018 10:54 pm   Subject: fascinating stuff but...
i declared my a as real*4
and all was going well but...
on the 1924th (or so) iteration of adding 0.00125 to 1.5...

when i would expect the value of 3.90255 to go to 3.90380
it actually jumps to ...
  Topic: floaty problem (beginner)
Helen

Replies: 7
Views: 2836

PostForum: Support   Posted: Tue Apr 17, 2018 10:40 am   Subject: floaty problem (beginner)
must be a stupid question but...
i have a variable a = 1.5
i add to it 0.00125
and then a shows in a write as 1.50124999997

what am i doing wrong?

is there a different declaration for fixed f ...
  Topic: Problem WRITE
Helen

Replies: 14
Views: 5388

PostForum: Support   Posted: Sun Apr 01, 2018 3:45 pm   Subject: just a word
i am a novice so i can quite understand why i fell at the first hurdle, but I found your forum and being here is so great of you!
I was using Simply Fortran (just found it first) at first until I had ...
  Topic: Problem WRITE
Helen

Replies: 14
Views: 5388

PostForum: Support   Posted: Wed Mar 21, 2018 12:10 pm   Subject: thank you, all!
Thank you all so much for helping me out with my novice question! Your help has solved the problem and I'm writing with glee now! Have a great week!
  Topic: Problem WRITE
Helen

Replies: 14
Views: 5388

PostForum: Support   Posted: Thu Mar 15, 2018 4:59 pm   Subject: Problem WRITE
Doing fortran at Uni this year and using the marvellous PLATO to edit,compile, build and run my programs on a windows 10 laptop.

Most things going swimmingly fine with one exception: I canít work o ...
 
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