fortran77 Questions
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What is the correct way to compare two strings say abc and bcd depending on the alphabetic order? Is there a built in command to do so? Or would > or .lt. do the work without any problems?
Watkins asked 28/1, 2019 at 5:34
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I recently moved from the SGI, Sun workstation environment to a Mac. SGI and Sun came with Fortran compilers so I have maybe 100 small f77 codes I wrote over the years for post-processing and analy...
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What is the motivation for defining PI as
PI=4.D0*DATAN(1.D0)
within Fortran 77 code? I understand how it works, but, what is the reasoning?
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I am new to Fortran and coding in general so I apologize if my terminology is not correct.
I am using a Linux machine with the gfortran compiler.
I am doing research this summer which involves me...
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Unless I'm mistaken, there is no way in Fortran to write a function or subroutine with an arbitrary number of arguments (known more succinctly as a variadic function).
For example:
RESULT = FUNC(...
Iota asked 16/6, 2016 at 20:52
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I'm trying to install octave 3.8.1 on a cluster running Redhat+IBM LSF. I don't have write access to any directory except my home dir. I have loaded three modules 1) pcre 8.33 2) blas 08/2013 3) la...
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I am a fresh in programming, I wanna to call a fortran function in my c++ code. the thing is I dont know how to pass a fortran character*81 array to my c++.
fortran code is like:
subroutine func0...
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I am modifying a code from a model written in Fortran 77, but I have come across an odd thing to me. In some files, there is a label "d" in the first column of a line, like the example below:
d re...
Guddle asked 21/4, 2015 at 12:11
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I want to read a line in a file, which includes three real numbers, without advancing the pointer. So I wrote: (TXT is the variable representing my file which has a value of 80)
read(TXT, *, ADVAN...
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I'm trying to compile some old fortran77 programs with gfortran and getting error with allocatable arrays.
If I define arrays in f90-style, like:
REAL*8,allocatable::somearray(:)
everything is f...
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I adapted a simple program to compute and plot the movement vortices of to Julia to test the language, I also wrote it in Python for no particular reason.
(Disclaimer: 1. Every performance compari...
Ablaut asked 16/12, 2013 at 14:54
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I'm working on a model written in Fortran 95, which I am completely new to. The concept of statement labels seems strange, and I've so far only found the explanation that the labels can be arbitrar...
Hellgrammite asked 26/9, 2013 at 12:44
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I've a question about Fortran 77 and I've not been able to find a solution.
I'm trying to store an array of strings defined as the following:
character matname(255)*255
Which is an array of 255 st...
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In bash I could write a simple script like below; to read the content of a file in the folder as I define the path for the file using environment variable "fileplace"
#!/bin/bash
fileplace="/home...
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I understand gfortran can compile f90 or f95? How does it know which one it is compiling? Also can it compile f77 code? Does ubuntu already have a fortran compiler or do I need to download gfortran...
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This question is about the efficiency of a linear search vs. the efficiency of a binary search for a pre-sorted array in contiguous storage...
I have an application written in fortran (77!). One f...
Phillane asked 9/5, 2012 at 21:3
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I have been working with Fortran for years, but the file I/O is still hazy to me. My understanding of status, form, access, recl is limited, because I only needed certain use-cases in grad school.
...
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I have a Fortran77 snippet that looks like this:
DO 1301 N=NMLK-2,2,-1
Some code...
IF(NB1(N).EQ.50) GOTO 1300
Some code...
IF(BS(N).EQ.0.0) GOTO 1301
some code...
GOTO 1301
1300 NW(M...
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Today I was reading code from some very popular numerical libraries written in FORTRAN 77 such as QUADPACK (last updated in 1987), and I was wondering if there is any reason not to rewrite those li...
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I'm rewriting some legacy code and came across this:
DO 4 I=1,N
...
DO 4 J=1,N
...
4 CONTINUE
There appears to be only one CONTINUE for these two loops. Is it equivalent to this Java code?
...
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Can anyone tell me how to install f77 on Mac OS X 10.6? I am quite new to f77.
Thank you very much
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How can I get Mathematica to export/save/write a text file with proper Fortan77 formatting, that is, 72 columns and a continuation marker on the sixth column?
I am using Mathematica to generate la...
Steelworks asked 6/11, 2009 at 13:48
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Before I begin, I must preface by stating that I am a novice when it comes to FORTRAN. I am maintaining a legacy piece of code from 1978. It's purpose is to read in some data values from a file, pr...
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