Recent questions tagged fortran90

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fortran90 - How to use Fortran 77 subroutines in Fortran 90/95?

I'm writing a code with Fortran 90 and now I need to use the special functions in the*amos Fotran 77 library( ... long and it was a disaster. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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fortran90 - Zero indexed array in Fortran?

Can someone explain what is zero indexed array in Fortran along with example. I'm not getting any content on that on internet. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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fortran90 - Include both .f and .F90 file in Fortran main file header

I am using some F77 fixed format code with my F90 program. I am trying to include both kinds of code ... Composer XE 2013 with command prompt. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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fortran90 - Usage of Fortran statement functions

I read about statement functions, such as the example: C(F) = 5.0*(F - 32.0)/9.0 Isn't this the same ... do I need to use a statement function? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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fortran90 - how to stop a fortran program abnormally

When an exception occurs I would like to terminate abnormally my program. Right now, when an exception ... allocatable arrays in fortran. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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fortran90 - Identify version of Fortran of this code for the LF compiler

I'm new to Fortran. I was given a file that is supposed to be in Fortran 90, but written to be compiled with the ... .8,254.6,208.8,202.8/) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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fortran90 - How could a simple optional argument lead to data corruption?

I have a FORTRAN code with a routine: SUBROUTINE READ_NC_VALS(NCID, RECID, VARNAME, VARDATA) integer ncid, recid ... ; I just work here. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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fortran90 - How to make some generic programming in fortran 90/95 working with intrinsic types

I would like to program some procedure that will work with different types. I am planning to use the "include" ... of the data copy) Tanks! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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fortran90 - What does "%" mean / do in Fortran?

I am trying to read some Fortran code, but can not determine what the % (percentage sign) does. It is in a line ... a%rho+g)) What does it do? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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fortran90 - How to write at specific lines in fortran

I want to copy a file from a folder and write at specific lines of the file using fortran. I am using Windows, ... file? but couldn't help me. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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fortran90 - Assumed string length input into a Fortran function

I am writing the following simple routine: program scratch character*4 :: word word = 'hell' print *, concat ... Why will they not concatenate? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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fortran90 - fortran format specifier for complex number

Can I specify a format specifier for a complex number in fortran? I have a simple program. program complx1 implicit ... that can do the work. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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fortran90 - Wrong result when using a global variable in Fortran

I'm learning the basics of Fortran. I created a simple subroutine initializing a matrix: program test integer, ... with gfortran 6.3.1 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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fortran90 - Direct indexing of function return value in Fortran

Is there possibility to use indexing directly on a function's return value? Something like this: readStr()(2:5) ... other syntax to be used? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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fortran90 - f2py: Specifying real precision in fortran when interfacing with python?

I am playing around with f2py. I'm a bit confused about numpy intrinsic types vs. fortran 90 types. It ... gfortran fro all the above examples. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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fortran90 - Read a file with an unknown number rows in Fortran

Heroes the new code I used. I have tried this, and it works if I have n declared first, which is not what ... i, x(i) ENDDO end program reading See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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fortran90 - Fortran intent(inout) versus omitting intent

Good practice dictates that subroutine arguments in Fortran should each have a specified intent (i.e. intent(in), ... older, intent free, code? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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fortran90 - Is Fortran unable to do the addition between 865398.78 and -865398.78? Why the answer is -0.03?

In the code below I am adding together 865398.78 and -865398.78. I expect to get 0, but instead I get -0 ... of "read" codes or something else? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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fortran90 - Fortran array cannot be returned in function: not a DUMMY variable

Being new to Fortran 90 free-form, I would really like to know why the following piece of code snippet would not ... did I do wrong? Thanks, See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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473 views

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fortran90 - What is the purpose of result variables in Fortran?

In Fortran, there are two standard ways to return a result from a function. The first one is by ... was for introducing result variables? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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218 views

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fortran90 - Function in fortran, passing array in, receiving array out

I have this function, depicted below. It passes in two vectors with three values each, and should pass out one ... for me to fix this error? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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254 views

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fortran90 - Fortran SAVE statement

I've read about the save statement in the (Intel's) language reference document, but I cannot quite grasp what it ... is included in a module ? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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