mindex.F

Go to the documentation of this file.

Copyright>        OpenRadioss
Copyright>        Copyright (C) 1986-2025 Altair Engineering Inc.
Copyright>
Copyright>        This program is free software: you can redistribute it and/or modify
Copyright>        it under the terms of the GNU Affero General Public License as published by
Copyright>        the Free Software Foundation, either version 3 of the License, or
Copyright>        (at your option) any later version.
Copyright>
Copyright>        This program is distributed in the hope that it will be useful,
Copyright>        but WITHOUT ANY WARRANTY; without even the implied warranty of
Copyright>        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Copyright>        GNU Affero General Public License for more details.
Copyright>
Copyright>        You should have received a copy of the GNU Affero General Public License
Copyright>        along with this program.  If not, see <https://www.gnu.org/licenses/>.
Copyright>
Copyright>
Copyright>        Commercial Alternative: Altair Radioss Software
Copyright>
Copyright>        As an alternative to this open-source version, Altair also offers Altair Radioss
Copyright>        software under a commercial license.  Contact Altair to discuss further if the
Copyright>        commercial version may interest you: https://www.altair.com/radioss/.
C
!||====================================================================
!||    mindex   ../starter/source/materials/mat/mat026/mindex.F
!||====================================================================
      INTEGER FUNCTION mindex(AA,NI,NJ,A)
C     RECHERCHE D'INDEX
C-----------------------------------------------
C   I m p l i c i t   T y p e s
C-----------------------------------------------
#include      "implicit_f.inc"
C-----------------------------------------------
C   D u m m y   A r g u m e n t s
C-----------------------------------------------
      INTEGER ni, nj
C     REAL
      my_real
     .   aa(ni,nj), a
C-----------------------------------------------
C   L o c a l   V a r i a b l e s
C-----------------------------------------------
      INTEGER i1, i2, i3
C     REAL
      my_real
     .   a1, a2, a3
      i1 = 1
      i2 = nj
      a1 = aa(1,i1)
      a2 = aa(1,i2)
      IF(a2>=a1)THEN
 1      CONTINUE
         i3 = (i1 + i2)/2
         a3 = aa(1,i3)
         IF(a3>=a)THEN
           i2 = i3
           a2 = a3
         ELSE
           i1 = i3
           a1 = a3
         ENDIF
       IF(i2-i1>1) GOTO 1
      ELSE
 2      CONTINUE
         i3 = (i1 + i2)/2
         a3 = aa(1,i3)
         IF(a3<a)THEN
           i2 = i3
           a2 = a3
         ELSE
           i1 = i3
           a1 = a3
         ENDIF
       IF(i2-i1>1) GOTO 2
      ENDIF
C
      mindex=i1
      RETURN
      END