Questions tagged [fortran]
Questions about interfacing Mathematica and Fortran. This also includes conversion of Fortran style numbers to Mathematica style.
13 questions
19
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6
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How to export data files using specific number format
Very often, I have to export data files from Mathematica. These output files contain several columns and hundreds of lines with data. For the sake of the question let's create a sample list:
...
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45
votes
1
answer
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Linking FORTRAN with Librarylink
FORTRAN code can be called using MathLink or .NET/Link (see the link for a worked examples).
But as mentioned in a talk by T.Gayley and J.Klein in Wolfram Technology Conference 2011, LibraryLink, ...
- 1,507
27
votes
2
answers
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How can I get Mathematica to produce better Fortran code?
I am new to Mathematica and I am trying to get to it to produce some expressions in Fortran code. However, it seems that Mathematica will output duplicated expressions, that is, expressions the need ...
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22
votes
2
answers
3k
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Import Fortran unformatted binary
I have an unformatted binary file generated using the Compaq Visual Fortran compiler (big endian).
Here's what the little bit of documentation states about it:
The binary file is written in a ...
- 11k
13
votes
1
answer
983
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How to load FORTRAN libraries through Librarylink
First, the main reference is the thread Linking FORTRAN with Librarylink, which teaches how to make the link between a FORTRAN subroutine and a Mathematica code, by using Librarylink. This must done ...
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3
votes
1
answer
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Using FortranForm for d0 notation? [duplicate]
When I use FortranForm, it changes 2*a^2 into 2*a**2 which is fine, but if I want the expression in a form such as,
2.d0*a**2
which represents an integer to be ...
- 195
2
votes
1
answer
780
views
0
votes
2
answers
144
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Replacing all integers in a string
Let's say I have some expression like,
expr = 1*a + 2*b +3*c + 4*d
I want to write this to a string that I can then use in some other Fortran script. I want all ...
- 197
20
votes
1
answer
944
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Is it possible to use the DGEEV and DSYEV LAPACK subroutines in Mathematica?
Here is my problem: I'm diagonalizing some matrices using Eigensystem[] to obtain eigenvalues and eigenvectors and I'm diagonalizing the same matrices using a ...
- 311
9
votes
3
answers
3k
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How to change an expression to Fortran90 form?
I have a large expression produced by Mathematica. To use this expression in my Fortran program I need to change it to a Fortran90 form. I am not satisfied with the ...
- 1,247
2
votes
1
answer
518
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Insert a linebreak and character repeatedly into a matrix output which is in fortranForm
Suppose I have a very long string which is a11 element of matrix
a11=2*gopsv-2*Bgopsvw+2*acgmops*v+2*cgmopsv*B-2*acgmopsvB+3*gmopsvB-3*BgmopsvwB+m*w2*B +5*acgm2 +opsvB -ac*m2*w2*B +cgm2*opsvB* - 3*...
- 195
2
votes
2
answers
476
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Mathematica code in fortran [closed]
I have an integral in which the integrand is a combination of ratio of modified bessel function of second kind. I am able to find the solution of this integral with mathematica Nintegrate module with ...
0
votes
2
answers
669
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Output of matrix in FortranForm
matr2 = Table[FortranForm[matr[[i, j]]], {i, 4}, {j, 6}]
but i want output to be more like this
matrix(1,1)=a11 output in ...
- 195