rhdt's articles:

Items(56) /6 Next >> Last >|

Efficient way of finding most-significant non-zero bit of integer 8 158 (9/23/2008 1:48:46 PM) comp.lang.fortran Hi all -- In writing some logic code for an octree, I've come across a situation where I have to find the most-significant non-zero bit of an integer. I can see how this might be done via a brute-force scan ... Rich

Passing module procedures to external procedures -- type issues 18 49 (9/20/2008 1:52:32 AM) comp.lang.fortran Hi all -- Consider the following module: ---CUT--- module foo implicit none contains subroutine main_sub () call internal_sub() contains subroutine internal_sub() call QAG(oth... Rich

Allocatable scalar components not allowed in derived types... why? 5 36 (7/23/2008 9:00:20 PM) comp.lang.fortran Just out of curiosity, could anyone enlighten me why allocatable scalars aren't allowed in derived types (in F2003 or F95 + TR15581)? It strikes me as this could be a useful way of having a component that eit... Rich

Looking for Lawrie Schonfelder... 7 47 (3/17/2008 1:18:41 PM) comp.lang.fortran Hi all -- Does anyone know how I might be able to get hold of either Lawrie Schonfelder, or his iso_varying_string test suite? cheers, Rich ... Rich

Ambiguous interfaces in gfortran -- who's right? 41 55 (11/2/2007 1:11:06 PM) comp.lang.fortran Hi all -- I've just been trying out gfortran with my code library. When compiling my root-finding module, I get the following error: <<< gfortran -I/usr/lib -I/usr/local/include/fortran/gfortran -O2 -std=f20... Rich

Redefinition of index variable in input implied do loop -- legal? 2 77 (6/14/2007 3:51:49 PM) comp.lang.fortran Hi all -- I've just come across the following line of code: read(33,*) (i, rads(i), vr(i,jfirst), rho(i,jfirst), > xmdum, pdum, vt(i,jfirst), vp(i,jfirst), i=1,numrs) Note how i is the imp... Rich

Multi-dimensional rejection method 1 39 (2/26/2007 8:18:36 PM) comp.lang.fortran Dear all, I'd be grateful if someone could give me some pointers on a problem to do with random parameter generation. The problem is this: I need to generate sets of parameters {x_1,x_2,x_3,...} in some ran... Rich

Interface matching question -- explicit shape vs assumed shape 9 42 (2/12/2007 3:14:05 PM) comp.lang.fortran Hi all -- I've run into what may be an issue with my compiler -- but could just as equally be my non-standard code. Suppose I have a subroutine that accepts another subroutine as an argument, looking someth... Rich

Initialization for derived-type arrays 6 47 (1/25/2007 3:24:35 PM) comp.lang.fortran Hi all --- Suppose I have a derived type whose components all have default initializations. If I declare an allocatable array of this type, and then allocate it, is each element of the array now fully-define... Rich

Dimension attribute based on host-associated variable - bug in Intel Fortran 6 45 (12/28/2006 1:50:29 AM) comp.lang.fortran Hi all -- A question about what appears to be a bug in the Intel compiler: in a module subroutine, I have declarations of the form real, dimension(2*COUNT(spheres%inter)) :: lambda real, dimension(... Rich

rhdt's replies:

Items(532) /54 Next >> Last >|

keyword capitalization -- current practice 36 66 (12/28/2007 7:50:54 PM) comp.lang.fortran I am writing a book that will include Fortran 2003 and C++ code samples. I'd like to know what is the most common, current practice with regards to capitalizing keywords in Fortran. All responses are welcome, ... damian538 (161)

Looking for Lawrie Schonfelder... 7 47 (3/17/2008 1:18:41 PM) comp.lang.fortran Hi all -- Does anyone know how I might be able to get hold of either Lawrie Schonfelder, or his iso_varying_string test suite? cheers, Rich ... rhdt (1081)

Real Symmetric Matrix Inversion 6 64 (3/20/2008 7:04:19 PM) comp.lang.fortran Hi, I was wondering if any one can recommend a robust and fast matrix inversion routine. I have a matrix with vastly different (sometimes over 10 orders of magnitude) elements that needs to be inverted. I h... rjmagyar (14)

Segmentation Fault in calling FFTW 2 49 (7/23/2008 5:51:02 AM) comp.lang.fortran Dear all; I have written a simple program and called FFTW in it. but I envisaged Segmentation Fault after "CALL dfftw_execute(plan)" Is there anyone who can guide me where have I made a mistake? ---------... fateme.mirjani (56)

Read a header and then a binary file? 12 146 (7/23/2008 10:40:49 AM) comp.lang.fortran Hi, Im new to fortran and Im trying and (failing) to solve my little problem. Any help would be much appreciated?! Im trying to read a text header that I have appended to the top of a binary file and then rea... mdekauwe (117)

Allocatable scalar components not allowed in derived types... why? 5 36 (7/23/2008 9:00:20 PM) comp.lang.fortran Just out of curiosity, could anyone enlighten me why allocatable scalars aren't allowed in derived types (in F2003 or F95 + TR15581)? It strikes me as this could be a useful way of having a component that eit... rhdt (1081)

Question about arrays of derived types and POINTERs 13 49 (7/31/2008 11:42:19 PM) comp.lang.fortran First of all, sorry about the length of this post. I tried to come up with a short piece of example code, but between the code and problem description, it's still about 350+ lines. I have been trying to impr... mstucky5 (52)

Off topic - Optimization of a finite volume differencing scheme for multispecies transport problem 11 32 (8/1/2008 12:49:23 AM) comp.lang.fortran I am working on a 3d finite volume scheme for an advection-diffusion- reaction problem involving a large number of chemical species (more than 60) and a large domain (an big lake for example). Since this scheme... bouloumag1 (4)

Passing module procedures to external procedures -- type issues 18 49 (9/20/2008 1:52:32 AM) comp.lang.fortran Hi all -- Consider the following module: ---CUT--- module foo implicit none contains subroutine main_sub () call internal_sub() contains subroutine internal_sub() call QAG(oth... rhdt (1081)

Efficient way of finding most-significant non-zero bit of integer 8 158 (9/23/2008 1:48:46 PM) comp.lang.fortran Hi all -- In writing some logic code for an octree, I've come across a situation where I have to find the most-significant non-zero bit of an integer. I can see how this might be done via a brute-force scan ... rhdt (1081)