C
C             Parallel Sparse BLAS  v2.0
C   (C) Copyright 2006 Salvatore Filippone    University of Rome Tor Vergata
C                      Alfredo Buttari        University of Rome Tor Vergata
C
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C      software without specific written permission.
C
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C
C 
      INTEGER FUNCTION MAX_NNZERO(M, IA2)
      IMPLICIT NONE

      INTEGER M
      INTEGER IA2(*)

      INTEGER I,MAX_NZ

      MAX_NZ = 0

      DO I = 1, M
         MAX_NZ = MAX(MAX_NZ,IA2(I+1)- IA2(I))
      ENDDO

      MAX_NNZERO = MAX_NZ
      END