jvdelisle's articles:

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Update on gtk-fortran interfaces 2 69 (3/4/2011 2:17:50 PM) comp.lang.fortran There is a devel branch at the git-hub repository now. We are still experimenting a lot with this but example programs can now do menus, primitive graphics, etc. It is fairly usable now. We are still testin... Jerry

C interoperability and ISO_VARYING_STRING 6 55 (1/1/2011 6:17:55 PM) comp.lang.fortran This is a multi-part message in MIME format. --------------020202070509050207090809 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Hi, I have been fiddling with so... Jerry

Need help getting started 4 46 (6/22/2008 11:28:20 PM) comp.lang.forth Hi, I used Forth many years ago. I even wrote my own Forth in 8086 code. So, I know some of the basics. Well I downloaded 4th, did the make and make install fine. 4th executes at the command prompt in my ... jvdelisle

G format question 5 54 (2/3/2008 12:40:43 AM) comp.lang.fortran What is the correct output for the following: d a = 0.0 write(*,'(G15.0)') a It seems that there may be an ambiguity in the standard when Gw.d is specified with d=0. I am looking at draft F2003... Jerry

Two forms for READ, which is right? 3 54 (10/6/2007 8:35:33 PM) comp.lang.fortran The following statement is accepted as valid by at least one compiler, but rejected by several others. I would appreciate an interpretation on this: READ ('(f3.3)'), a ! Rejected? My take is that the initia... Jerry

Is this namelist code legal? 11 48 (10/5/2007 7:18:30 PM) comp.lang.fortran Hi, With the test case given below, is this line valid in the namelist: x%m%ch(:)(2) = 'z','z','z','z','z','z','z','z', I observe several compilers fail on this. Test case: module global type ... Jerry

On writing negative zero - with or without sign 155 240 (7/8/2007 8:14:45 PM) comp.lang.fortran Fortran 77 explicitly forbids output of a negative sign for a zero value. Fortran 90/95 are intended to be compatible with F77 except where noted. The f90/95 standards omit the statement about not outputting... Jerry

gfortran F2003 STREAM IO announcement 0 58 (8/19/2006 2:04:23 AM) comp.lang.fortran Hi Folks, The latest SVN trunk version of gfortran, 4.2, has just implemented STREAM IO. I would very much appreciate testing and comments from those interested in this new feature. Best Regards, Jerry ... Jerry

Error handling in I/O Statements 10 47 (3/8/2006 6:33:58 AM) comp.lang.fortran I am working on a gfortran bug. There are three "families" of IO errors that can be trapped and if the error occurs jump to a line. These are EOR, END, and ERR. My question is simple. If ERR is used in the... Jerry

TRUE FALSE question 13 42 (2/12/2006 11:09:10 PM) comp.lang.fortran Hello, I am reviewing the f95 standard for correct designation of true and false in a namelist file. So far I only see .TRUE. and .FALSE. as being OK. Is it also OK to have T and F as well? What about TR... Jerry

jvdelisle's replies:

Items(33) /4 Next >> Last >|

Questions on reuse of FORMAT statements and newer I/O options such as ACCESS='STREAM' 21 43 (12/28/2009 5:06:30 AM) comp.lang.fortran cat >/dev/null ) agree with me. As an example, when I use GFORTRAN and STREAM I/O the DO loop example has a null character (shown as ^@) where I expect a space, some compilers write nothing when a WRITE(3f) wi... urbanjost (37)

Reading messy files with Fortran 35 119 (1/27/2010 11:51:52 PM) comp.lang.fortran I posted on this topic before and this is my latest take on it: (1) In my case the messy files are csv extracts from a database (whose character encoding is Unicode - I don't know if it has anything to do ... analyst41 (232)

IOSTAT for input from sequential formatted files with "incomplete" final record 20 265 (2/3/2010 8:14:24 AM) comp.lang.fortran Consider a file, that is not of fortran I/O origin, that does not have an end of record maker prior to the end of file: Line 1 Line 2 where is the end of record marker, that also happens to be the l... ian_harvey (217)

a wiki entry for gfortran 27 181 (8/6/2010 11:14:00 AM) comp.lang.fortran So, I've been thinking about how to document how one uses gfortran on windows and intend to use my own tendency to think a picture is worth between 3 and 5 paragraphs. I could sit here tapping the keys t... Uno

Fun with renames 9 165 (12/26/2010 6:23:15 AM) comp.lang.fortran C:\gfortran\clf\opengl>type bug1.f90 module m implicit none type t integer i end type t end module m module n use m, only: a=>t implicit none private public a end module... James

GTK+ and Fortran 2003 14 83 (12/27/2010 2:28:35 PM) comp.lang.fortran Hello, it is four years since my last post in comp.lang.fortran. I am still looking for an alternative to using CVF6.5 and his Quickwin library to create windows. I read with interest Tobias Burnus' post on t... vincent.magnin (18)

C interoperability and ISO_VARYING_STRING 6 55 (1/1/2011 6:17:55 PM) comp.lang.fortran This is a multi-part message in MIME format. --------------020202070509050207090809 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Hi, I have been fiddling with so... jvdelisle (55)

Poor performance with OpenMP 54 111 (1/13/2011 1:13:04 PM) comp.lang.fortran Hello, Ok. I've managed to learn just enough to write my first real OpenMP program. It performs a matrix multiplication. I can clearly see it taking both my CPU cores to 100% when it runs, but strangely, it ta... dcarrera (192)

Issue with Open(unit,STATUS='SCRATCH', iostat = ios) 9 126 (1/13/2011 5:44:40 PM) comp.lang.fortran In a software I am porting from DVF to GCC I have a problem with assignment of I/O fortran units. I have extracted the part of source which reproduce the bug and added write statement to see what is done at ea... cjpsimon (15)

OT Does this look right? 3 43 (1/26/2011 3:15:16 AM) comp.lang.fortran http://modernsurvivalblog.com/weather-preparedness/13-billion-cubic-feet-of-new-arctic-ice/ I'm curious whether anyone has seen this phenomenon and from what source. It probably doesn't have anything more to... Uno