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  Topic: On 9.03 update
JohnCampbell

Replies: 19
Views: 5044

PostForum: Support   Posted: Sun Oct 27, 2024 6:33 am   Subject:
Dan,

What I am trying to suggest to you is that in the directory "C:\Program Files (x86)\Silverfrost\" you should have multiple versions of ftn95, for example :
C:\Program Files (x86)\Si ...
  Topic: On 9.03 update
JohnCampbell

Replies: 19
Views: 5044

PostForum: Support   Posted: Sun Oct 27, 2024 3:16 am   Subject:
Dan,

show us the results of:
Runtime error from program:c:\program files (x86)\silverfrost\ftn95_905\ftn95.exe

(after you rebuild all binaries with the revised FTN95 compiler path settings !)
...
  Topic: Circle 3D
JohnCampbell

Replies: 2
Views: 1106

PostForum: 64-bit   Posted: Sun Oct 27, 2024 3:05 am   Subject:
Sid,

This is a fairly easy calculation ( which I have not done for many years !)

For the line between two points on the circumference, it can be written as:
l1.x + m1.y + n1 = 0 ( solve for l1 ...
  Topic: On 9.03 update
JohnCampbell

Replies: 19
Views: 5044

PostForum: Support   Posted: Sat Oct 26, 2024 8:32 am   Subject:
Dan,

I had problems with (drectly) running programs compiled with /check.

However if i used "SDBG64 program.exe", this helped identify any errors. This may help in your case ?
I am no ...
  Topic: OPTIONS
JohnCampbell

Replies: 5
Views: 1509

PostForum: General   Posted: Fri Oct 25, 2024 3:14 am   Subject:
I havn't tested lately, but /DEBUG does(did) provide some debugging "handles" but does not have the performance penalty.
If you use /check or /undef with large arrays, this can have a signi ...
  Topic: EXPORT_WINDOW_IMAGE@
JohnCampbell

Replies: 7
Views: 2164

PostForum: ClearWin+   Posted: Fri Oct 18, 2024 2:08 pm   Subject:
Ken,

It has been a long time since I wrote this code (~2005), but I recall I overcame this secondary screen problem by providing a window handle then selecting the graphics region I wanted to popul ...
  Topic: Bug with 32 bit compiler
JohnCampbell

Replies: 5
Views: 1677

PostForum: Support   Posted: Sun Oct 13, 2024 9:05 am   Subject:
Steping through sdbg appeared to show the problem.

To stop the double evaluation, I also tried :
a2 = ( ( random_std_normal() ) **2 )

in the hope that it would treat "( fn )" as a co ...
  Topic: Bug with 32 bit compiler
JohnCampbell

Replies: 5
Views: 1677

PostForum: Support   Posted: Sun Oct 13, 2024 3:33 am   Subject:
Hi Ken,

look at this program !!

module random_numbers
implicit none
integer, parameter :: dp = kind(1.d0)
real(dp), parameter :: pi = 4.d0*atan(1.d0)
...
  Topic: Confusing difference
JohnCampbell

Replies: 10
Views: 3752

PostForum: Support   Posted: Wed Oct 09, 2024 1:54 pm   Subject: Re:
Also how about SSE2 and AVX instructions with 64bit compilers. Do they still support 80bit accuracy?

No ! this is the problem with AVX registers, they only support grouped 4/8 byte instructions.
...
  Topic: TIOBE index top 20: re-emergence of Fortran
JohnCampbell

Replies: 24
Views: 21029

PostForum: General   Posted: Tue Oct 08, 2024 4:33 am   Subject:
Dan,

Coarrays and MPI (distributed processing) was introduced into Fortran 2008.

DO CONCURRENT (DC) was also introduced in Fortran 2008, but locality-specs wern't introduced until Fortran 2018 a ...
  Topic: Confusing difference
JohnCampbell

Replies: 10
Views: 3752

PostForum: Support   Posted: Tue Oct 08, 2024 3:52 am   Subject:
OK,

A new program that demonstrates 32-bit has different round-off.

program main
use iso_fortran_env
implicit none
double precision :: a,b,c,d, one = 1
logical :: ...
  Topic: TIOBE index top 20: re-emergence of Fortran
JohnCampbell

Replies: 24
Views: 21029

PostForum: General   Posted: Mon Oct 07, 2024 12:47 pm   Subject:
The recent Fortran versions of DO CONCURRENT now includes locality-specs for multi-threading.
You can now (Ver 2023) specify LOCAL, LOCAL_INIT, REDUCE, SHARED, and DEFAULT (NONE) in the same DO CONCU ...
  Topic: Confusing difference
JohnCampbell

Replies: 10
Views: 3752

PostForum: Support   Posted: Mon Oct 07, 2024 12:27 pm   Subject:
I changed your program to:
program main
use iso_fortran_env
implicit none
double precision :: a,b,c,d
logical :: f1, f2

write (*,*) 'Vern : ',compiler ...
  Topic: Why this is forbidden ?
JohnCampbell

Replies: 5
Views: 2504

PostForum: General   Posted: Fri Sep 27, 2024 9:36 am   Subject:
enhanced test also works in Plato

type lostPart
integer*4 :: is
real*4, allocatable :: Particles(:,:)
end type lostPart

Type (lostPart), allocat ...
  Topic: Why this is forbidden ?
JohnCampbell

Replies: 5
Views: 2504

PostForum: General   Posted: Fri Sep 27, 2024 9:13 am   Subject:
Dan,

I can't see what you are doing wrong.
I use this approach with both FTN95 and Gfortran.
I also have "ispecies" as an allocatable derived type structure.

What compiler options ar ...
 
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