equivalent in fortran of the IDL "where" function
Hi, i am a beginner in F90 and I do not know how to select some array elements according to its values. That is to say what is the equivalent of the "where" function (in IDL) in fortran. a = [ 2,5,9,-7,4,-8] b = [ 100,200,300,400,500,600] I want to know the index of the positive values of the array a ( h... 26 Mar 2010 15:34
size of a derived type containing pointers...
Hello, In my code I need to determine the size of various variables which are defined as derived types. Until now I used to use the INQUIRE() function, but it doesn't work if the derived type contains some pointers. Is there a (not too complicated) solution ? I don't need to know the size of the objects point... 7 Apr 2010 01:20
calling a recursive function in fortran 77 ?
how can we implement this in fortran 77. i know there is intrinsic recursive function in fortran 90/95. function func(x,y) .... .... if ( y.lt.1.0d0 ) then func = ........ elseif ( y.gt.1.0d0 ) then func = something/func(x,-y) end if end function waiting for the reply..... thanking you..... ... 30 Mar 2010 16:06
Selecting the first element of a array returned by pack()
I am trying to code whether all non-zero values of a DIM=1 array are equal. My intention is to avoid writing a O(n**2) loop. I thought of using intrinsics pack() and any(). However, I cant seem to get past the first step. I am not able to select the first element of the array returned by pack(). I tried the follo... 25 Mar 2010 05:44
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Vista available libraries
Hello all! I am a new user to Fortran 90. So I really know little about its background. I am trying to compile a file on WIndows Vista and it ends up with an error that cannot access libiomp5mt.lib. However when I compile it on XP it runs perfectly. So what I would like to know is if I should do anything ... 24 Mar 2010 13:28
calling readline(3c) from fortran
I have seen the topic of how to use the GNU readline(3c) procedure from Fortran come up several times. I tried it using the ISO_C_BINDINGS module from the (recent) g95(1) and gfortran(1) compilers. I had several surprises; I also succeeded in making a module for the entire VOGLE graphics library using the ISO_C_B... 28 Mar 2010 02:31
Select a subset of equations at runtime
Hello all! This is my first message to the group although since now I read several interesting discussions here. I'm not a professional programmer but I have some experience of computational programming. I'm working on the code to solve sets of non-linear equations. I'm writing the module that provides to the ... 1 Apr 2010 13:29
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