1-Permissions_&_Instructions.txt

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----####----COPYRIGHT AND QUESTIONS-----####---
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1) Copyright 2024 by Mário Rui Arruda all rights reserved. 

2) Questions can be emailed to mario.rui.arruda@tecnico.ulisboa.pt

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----####--------R&D FORTRAN CODE--------####---
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1) The Subroutine has been updated since the initial publication, and since it is academic code, 
it may not be optimized, and some bugs may occur.

2) This Subroutine prints correctly ??x10 matrixes on the screen. 
For bigger matrix, WRITE(6,'(10E15.6)') needs to be updated.

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----####-----COMPILING INSTRUCTIONS-----####---
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There are two paths for compiling. The subroutine must be in the same folder of the UMAT file.
The UMAT in FORTRAN 77 standards or in Fortran 90 standards.

a) The first path using FORTRAN 77 standards:

  Add add the directive !DIR$ FREEFORM in the 1st line before the subroutine name (DEBBUGER_REAL).
  This does not work in GNU GFORTRAN COMPILER !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
  In the general UMAT file, after the end of the UMAT "END SUBROUTINE UMAT" in the next line:
  include 'DEBBUGER_REAL.F90'

b) If you are compiling already your UMAT with Fortran 90 standards, 
  with the flags reported below, then it is simple:

  After the end of the UMAT "END SUBROUTINE" in the next line include the code:
  include 'DEBBUGER_REAL.F90'
    
  For Linux in the lnx86_64.ENV file add the flag to "compile_fortran": 
  -free for INTEL COMPILER 
  -ffree-form for GNU GFORTRAN COMPILER
  For Windows in the win86_64.ENV add the flag to "compile_fortran":
  /free for INTEL COMPILER