jkrahn's articles:

Items(21) /3 Next >> Last >|

Simple F2008 feature request 2 45 (12/29/2007 7:11:36 PM) comp.lang.fortran Here is a simple feature proposal for F2008. If someone is interested, maybe it can be considered before the public comment period, if it seems minor enough to avoid problems. F2008 will support variable-len... Joe

New language features? 3 33 (11/29/2007 8:07:22 PM) comp.lang.c It seems to me that C could be improved by adding a few more features to the standard. I read some of the recent thread "Criticism of the C programming language ??????" which shows a lot of opinions for and aga... Joe

What's the purpose of explicit interfaces? 11 38 (3/18/2006 5:51:26 PM) comp.lang.fortran An explicit interface seems useful, but it makes sense to put it in an include file and allow the described routines to include the definitions to verify them, as in C. It seems that the usual idea is to use ... Joe

entity naming conventions 9 38 (3/17/2006 7:29:23 PM) comp.lang.fortran Names within a given scope in Fortran all share one big name space, so you can't have a type name of XYZ and a variable named XYZ. Therefore, it can be useful to include an entity-type suffix. Some Fortran p... Joe

F2003 syntax ambiguity? 2 42 (3/2/2006 3:26:17 AM) comp.lang.fortran It seems that mayb it is possible to have an ambiguous strucuture constructor for a type with parametrized attributes. Both the param-spec-list and component-spec-list are optional, and in both cases the key... Joe

f2003 source file suffix? 4 46 (3/2/2006 3:19:44 AM) comp.lang.fortran Although F90/F95 syntax is a lot different than, the most common use of the .f90 suffix is to distinguish free-format files. It is also not all that useful, because it does not help with included files. It is... Joe

Converting fixed-to-free format 151 87 (2/25/2006 6:07:42 PM) comp.lang.fortran As part of my argument against continuing to support fixed format and other historical left-overs in the context of adding new features for F2003 and beyond, I am wondering why we don't just have a really goo... Joe

label-do can't end on a continue statement? 2 34 (2/25/2006 5:59:25 PM) comp.lang.fortran Having read through the F2003 stuff, here's one more syntax question. Although a non-label DO is the right way now days, I was surprised to see the rule that the labeled do-termination statement for a label-d... Joe

A few syntax questions 22 36 (2/24/2006 5:29:51 AM) comp.lang.fortran What is the purpose of an optional comma after the type specifier CHARACTER*(n) ? In the numbered syntax rules, why are END (FUNCTION|SUBROUTINE|PROGRAM) listed under action-stmt? They seem no more an action... Joe

Resolution of entities with the same name 3 40 (2/18/2006 7:34:29 PM) comp.lang.fortran In the following example an intrinsic function and variable having the same name, len(ch) is an error because the len() array obscures the len() intrinsic. However, it would be possible to resolve among them ... Joe

jkrahn's replies:

Items(42) /5 Next >> Last >|

generalized WHILE() extension/feature? 19 34 (3/16/2006 5:34:13 PM) comp.lang.fortran At least a few people have mentioned it would be nice to have an UNTIL feature for DO loops. I was thinking that a nice syntax would be to just use the existing WHILE() syntax, but don't require it to be plac... krahn (74)

Data alignment and performance 10 37 (3/17/2006 5:20:52 AM) comp.lang.fortran Recently, I found perfomance issue related to "derived-data type" with SEQUENCE, but I can't understand clearly this issue. So, I post this issue here to get some helps from someone with more expertise. I decl... sis (5)

entity naming conventions 9 38 (3/17/2006 7:29:23 PM) comp.lang.fortran Names within a given scope in Fortran all share one big name space, so you can't have a type name of XYZ and a variable named XYZ. Therefore, it can be useful to include an entity-type suffix. Some Fortran p... jkrahn (86)

What's the purpose of explicit interfaces? 11 38 (3/18/2006 5:51:26 PM) comp.lang.fortran An explicit interface seems useful, but it makes sense to put it in an include file and allow the described routines to include the definitions to verify them, as in C. It seems that the usual idea is to use ... jkrahn (86)

Memory allocated 9 46 (3/21/2006 11:16:25 AM) comp.lang.fortran Dear users (of fortran90 :) ), Is it possible to check how much of memory is allocated, or how much of memory is still free? ... kapermajster (1)

look up tables 6 29 (11/29/2007 5:34:07 PM) comp.lang.c Hi I would like to realise a simple lookup table in C. I have got a const array with 16 values. I have 4 input values of type integer with 32 bits. I loop then over the single bits and in each iteration I woul... Mike2909 (5)

Get the Compile-time Environment Variables ? 4 49 (11/29/2007 7:47:17 PM) comp.lang.c I need to know the Environment Variables for gcc at the compile time. eg: _AIX, __hpux, __GNUC__, etc.. Is there a way to list that ? ... benoit.lefebvre (48)

how to use standard fortran on a "binary"input file? 17 41 (8/22/2008 5:10:06 AM) comp.lang.fortran I was re-reading my huge Fortran 77/90/95 language specification manual and noted that the open file option ACCESS='BINARY' was accepted as an extension only for Windows up to NT, but not other platforms. I c... tbwright (1098)

F2003 complier, how far from us? 9 40 (8/25/2008 2:08:45 PM) comp.lang.fortran I had started to write my code in the summer of 2006. I choosed fortran as my program language for the reason that the F2003 standard which released in 2004. I wants oo and something like STL which in c++ (clas... li.simula (109)

Most efficient way to write a large matrix to disk 8 56 (8/25/2008 2:15:54 PM) comp.lang.fortran I have to write to disk some rather large matrices (N=10000 or more) of double precision numbers. The output file is opened with FORM='UNFORMATTED'. At the moment the writing is done passing the matrix to a su... lorents (12)