1 files changed, 55 insertions, 0 deletions
diff --git a/Dragon/src/AUTPRD.f b/Dragon/src/AUTPRD.f
new file mode 100644
index 0000000..5061a7a
--- /dev/null
+++ b/Dragon/src/AUTPRD.f
@@ -0,0 +1,55 @@
+*DECK AUTPRD
+      SUBROUTINE AUTPRD(NGRP,LBIN,NFS,SIGT)
+*
+*-----------------------------------------------------------------------
+*
+*Purpose:
+* Cross section or source spreading.
+*
+*Copyright:
+* Copyright (C) 2002 Ecole Polytechnique de Montreal
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU Lesser General Public
+* License as published by the Free Software Foundation; either
+* version 2.1 of the License, or (at your option) any later version
+*
+*Author(s): A. Hebert
+*
+*Parameters: input
+* NGRP    number of macro energy groups.
+* LBIN    number of fine energy groups.
+* NFS     number of fine energy groups in each coarse energy group.
+* SIGT    cross section or source before spreading.
+*
+*Parameters: output
+* SIGT    cross section or source after spreading.
+*
+*-----------------------------------------------------------------------
+*
+*----
+*  SUBROUTINE ARGUMENTS
+*----
+      INTEGER NGRP,LBIN,NFS(NGRP)
+      REAL SIGT(LBIN)
+*----
+*  ALLOCATABLE ARRAYS
+*----
+      REAL, ALLOCATABLE, DIMENSION(:) :: GAR
+*
+      ALLOCATE(GAR(NGRP))
+      GAR(:NGRP)=SIGT(:NGRP)
+      SIGT(:LBIN)=0.0
+      IPO=LBIN
+      DO J=NGRP,1,-1
+        ND=ABS(NFS(J))
+        SS=GAR(J)
+        DO L=1,ND
+          K=IPO-L+1
+          SIGT(K)=SS
+        ENDDO
+      IPO=IPO-ND
+      ENDDO
+      DEALLOCATE(GAR)
+      IF(IPO.NE.0) CALL XABORT('AUTPRD: SPREAD FAILURE.')
+      RETURN
+      END