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72 lines
2.5 KiB
Fortran
72 lines
2.5 KiB
Fortran
C
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C Parallel Sparse BLAS v2.0
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C (C) Copyright 2006 Salvatore Filippone University of Rome Tor Vergata
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C Alfredo Buttari University of Rome Tor Vergata
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C
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C Redistribution and use in source and binary forms, with or without
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C modification, are permitted provided that the following conditions
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C are met:
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C 1. Redistributions of source code must retain the above copyright
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C notice, this list of conditions and the following disclaimer.
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C 2. Redistributions in binary form must reproduce the above copyright
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C notice, this list of conditions, and the following disclaimer in the
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C documentation and/or other materials provided with the distribution.
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C 3. The name of the PSBLAS group or the names of its contributors may
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C not be used to endorse or promote products derived from this
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C software without specific written permission.
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C
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C THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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C ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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C TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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C PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PSBLAS GROUP OR ITS CONTRIBUTORS
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C BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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C CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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C SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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C INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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C CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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C ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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C POSSIBILITY OF SUCH DAMAGE.
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C
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C
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SUBROUTINE GEN_BLOCK(M,NG,IA,AUX)
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use psb_const_mod
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use psb_spmat_type
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IMPLICIT NONE
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INTEGER M, NG
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INTEGER IA(3,*), AUX(*)
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INTEGER BLOCK, I, N_ROWS
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N_ROWS = IA(1,2) - IA(1,1)
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I = 2
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BLOCK = 2
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AUX(1) = 1
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DO WHILE(.TRUE.)
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IF (N_ROWS.GT.PSB_MAXJDROWS_) THEN
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AUX(BLOCK) = AUX(BLOCK-1)+PSB_MAXJDROWS_
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N_ROWS = N_ROWS-PSB_MAXJDROWS_
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BLOCK = BLOCK+1
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ELSE IF (N_ROWS.GT.0) THEN
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AUX(BLOCK) = AUX(BLOCK-1)+N_ROWS
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N_ROWS = 0
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BLOCK = BLOCK+1
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ELSE IF (I.LE.NG) THEN
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N_ROWS = IA(1,I+1) - IA(1,I)
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I = I+1
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ELSE
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GOTO 998
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ENDIF
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ENDDO
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998 CONTINUE
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C ... Copy AUX in IA(1,*)
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NG = BLOCK - 2
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DO I = 1, NG+1
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IA(1,I) = AUX(I)
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ENDDO
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END
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