*DECK SMAKE2 SUBROUTINE SMAKE2 (TYPE, UPLO, DIAG, M, N, A, NMAX, AA, LDA, KL, $ KU, RESET, TRANSL) C***BEGIN PROLOGUE SMAKE2 C***SUBSIDIARY C***PURPOSE Generate values for an M by N matrix A. C***LIBRARY SLATEC (BLAS) C***AUTHOR Du Croz, J. J., (NAG) C Hanson, R. J., (SNLA) C***DESCRIPTION C C Generates values for an M by N matrix A within the bandwidth C defined by KL and KU. C Stores the values in the array AA in the data structure required C by the routine, with unwanted elements set to rogue value. C C TYPE is 'GE', 'GB', 'SY', 'SB', 'SP', 'TR', 'TB' OR 'TP'. C C Auxiliary routine for test program for Level 2 Blas. C***REFERENCES (NONE) C***ROUTINES CALLED SBEG C***REVISION HISTORY (YYMMDD) C 870810 DATE WRITTEN C 910620 Modified to meet SLATEC code and prologue standards. (BKS) C***END PROLOGUE SMAKE2 C .. Parameters .. REAL ZERO, ONE PARAMETER ( ZERO = 0.0, ONE = 1.0 ) REAL ROGUE PARAMETER ( ROGUE = -1.0E10 ) C .. Scalar Arguments .. REAL TRANSL INTEGER KL, KU, LDA, M, N, NMAX LOGICAL RESET CHARACTER*1 DIAG, UPLO CHARACTER*2 TYPE C .. Array Arguments .. REAL A( NMAX, * ), AA( * ) C .. Local Scalars .. INTEGER I, I1, I2, I3, IBEG, IEND, IOFF, J, KK LOGICAL GEN, LOWER, SYM, TRI, UNIT, UPPER C .. External Functions .. REAL SBEG EXTERNAL SBEG C .. Intrinsic Functions .. INTRINSIC MAX, MIN C***FIRST EXECUTABLE STATEMENT SMAKE2 GEN = TYPE( 1: 1 ).EQ.'G' SYM = TYPE( 1: 1 ).EQ.'S' TRI = TYPE( 1: 1 ).EQ.'T' UPPER = ( SYM.OR.TRI ).AND.UPLO.EQ.'U' LOWER = ( SYM.OR.TRI ).AND.UPLO.EQ.'L' UNIT = TRI.AND.DIAG.EQ.'U' C C Generate data in array A. C DO 20 J = 1, N DO 10 I = 1, M IF( GEN.OR.( UPPER.AND.I.LE.J ).OR.( LOWER.AND.I.GE.J ) ) $ THEN IF( ( I.LE.J.AND.J - I.LE.KU ).OR. $ ( I.GE.J.AND.I - J.LE.KL ) )THEN A( I, J ) = SBEG( RESET ) + TRANSL ELSE A( I, J ) = ZERO END IF IF( I.NE.J )THEN IF( SYM )THEN A( J, I ) = A( I, J ) ELSE IF( TRI )THEN A( J, I ) = ZERO END IF END IF END IF 10 CONTINUE IF( TRI ) $ A( J, J ) = A( J, J ) + ONE IF( UNIT ) $ A( J, J ) = ONE 20 CONTINUE C C Store elements in array AS in data structure required by routine. C IF( TYPE.EQ.'GE' )THEN DO 50 J = 1, N DO 30 I = 1, M AA( I + ( J - 1 )*LDA ) = A( I, J ) 30 CONTINUE DO 40 I = M + 1, LDA AA( I + ( J - 1 )*LDA ) = ROGUE 40 CONTINUE 50 CONTINUE ELSE IF( TYPE.EQ.'GB' )THEN DO 90 J = 1, N DO 60 I1 = 1, KU + 1 - J AA( I1 + ( J - 1 )*LDA ) = ROGUE 60 CONTINUE DO 70 I2 = I1, MIN( KL + KU + 1, KU + 1 + M - J ) AA( I2 + ( J - 1 )*LDA ) = A( I2 + J - KU - 1, J ) 70 CONTINUE DO 80 I3 = I2, LDA AA( I3 + ( J - 1 )*LDA ) = ROGUE 80 CONTINUE 90 CONTINUE ELSE IF( TYPE.EQ.'SY'.OR.TYPE.EQ.'TR' )THEN DO 130 J = 1, N IF( UPPER )THEN IBEG = 1 IF( UNIT )THEN IEND = J - 1 ELSE IEND = J END IF ELSE IF( UNIT )THEN IBEG = J + 1 ELSE IBEG = J END IF IEND = N END IF DO 100 I = 1, IBEG - 1 AA( I + ( J - 1 )*LDA ) = ROGUE 100 CONTINUE DO 110 I = IBEG, IEND AA( I + ( J - 1 )*LDA ) = A( I, J ) 110 CONTINUE DO 120 I = IEND + 1, LDA AA( I + ( J - 1 )*LDA ) = ROGUE 120 CONTINUE 130 CONTINUE ELSE IF( TYPE.EQ.'SB'.OR.TYPE.EQ.'TB' )THEN DO 170 J = 1, N IF( UPPER )THEN KK = KL + 1 IBEG = MAX( 1, KL + 2 - J ) IF( UNIT )THEN IEND = KL ELSE IEND = KL + 1 END IF ELSE KK = 1 IF( UNIT )THEN IBEG = 2 ELSE IBEG = 1 END IF IEND = MIN( KL + 1, 1 + M - J ) END IF DO 140 I = 1, IBEG - 1 AA( I + ( J - 1 )*LDA ) = ROGUE 140 CONTINUE DO 150 I = IBEG, IEND AA( I + ( J - 1 )*LDA ) = A( I + J - KK, J ) 150 CONTINUE DO 160 I = IEND + 1, LDA AA( I + ( J - 1 )*LDA ) = ROGUE 160 CONTINUE 170 CONTINUE ELSE IF( TYPE.EQ.'SP'.OR.TYPE.EQ.'TP' )THEN IOFF = 0 DO 190 J = 1, N IF( UPPER )THEN IBEG = 1 IEND = J ELSE IBEG = J IEND = N END IF DO 180 I = IBEG, IEND IOFF = IOFF + 1 AA( IOFF ) = A( I, J ) IF( I.EQ.J )THEN IF( UNIT ) $ AA( IOFF ) = ROGUE END IF 180 CONTINUE 190 CONTINUE END IF RETURN C C End of SMAKE2. C END