C ++********************************************************************
C                                                                      *
C                                                                      *
C                                                                      *
C **********************************************************************
C=* FROM: SPIDER - MODULAR IMAGE PROCESSING SYSTEM.   AUTHOR: J.FRANK  *
C=* Copyright (C) 1985-2005  Health Research Inc.                      *
C=*                                                                    *
C=* HEALTH RESEARCH INCORPORATED (HRI),                                *   
C=* ONE UNIVERSITY PLACE, RENSSELAER, NY 12144-3455.                   *
C=*                                                                    *
C=* Email:  spider@wadsworth.org                                       *
C=*                                                                    *
C=* This program is free software; you can redistribute it and/or      *
C=* modify it under the terms of the GNU General Public License as     *
C=* published by the Free Software Foundation; either version 2 of the *
C=* License, or (at your option) any later version.                    *
C=*                                                                    *
C=* This program is distributed in the hope that it will be useful,    *
C=* but WITHOUT ANY WARRANTY; without even the implied warranty of     *
C=* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU  *
C=* General Public License for more details.                           *
C=*                                                                    *
C=* You should have received a copy of the GNU General Public License  *
C=* along with this program; if not, write to the                      *
C=* Free Software Foundation, Inc.,                                    *
C=* 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.      *
C=*                                                                    *
C **********************************************************************
C                                                                      *
C                                                                      *
C                                                                      *
C  PURPOSE:                                                            *
C                                                                      *
C  PARAMETERS:                                                         *
C                                                                      *
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C***********************************************************************

	SUBROUTINE  FMAX_S(X,N,XMAX)

	PARAMETER  (NMPR=4)
	DIMENSION   X(N),A(NMPR),LN(NMPR),LT(NMPR)

	NT=N/NMPR
	IF (NT.EQ.0.OR.NMPR.EQ.1)  THEN
	   CALL  FMAX_C(X,N,XMAX)
	ELSE
	   DO    I=1,NMPR
	      LT(I)=(I-1)*NT+1
	      LN(I)=AMIN0(I*NT,N)-LT(I)
	   ENDDO
c$omp parallel do  private(i),schedule(static)
	   DO    I=1,NMPR
	      CALL  FMAX_C(X(LT(I)),LN(I),A(I))
	   ENDDO
	   XMAX=A(1)
	   DO   I=2,NMPR
	      XMAX=AMAX1(XMAX,A(I))
	   ENDDO
	ENDIF
	END