SUBROUTINE IVSET(ALG, IV, LIV, LV, V)
C
C  ***  SUPPLY ***SOL (VERSION 2.3) DEFAULT VALUES TO IV AND V  ***
C
C  ***  ALG = 1 MEANS REGRESSION CONSTANTS.
C  ***  ALG = 2 MEANS GENERAL UNCONSTRAINED OPTIMIZATION CONSTANTS.
C
      INTEGER LIV, LV
      INTEGER ALG, IV(LIV)
      REAL V(LV)
C
      INTEGER I7MDCN
      EXTERNAL I7MDCN, V7DFL
C I7MDCN... RETURNS MACHINE-DEPENDENT INTEGER CONSTANTS.
C V7DFL.... PROVIDES DEFAULT VALUES TO V.
C
      INTEGER ALG1, MIV, MV
      INTEGER MINIV(4), MINV(4)
C
C  ***  SUBSCRIPTS FOR IV  ***
C
      INTEGER ALGSAV, COVPRT, COVREQ, DRADPR, DTYPE, HC, IERR, INITH,
     1        INITS, IPIVOT, IVNEED, LASTIV, LASTV, LMAT, MXFCAL,
     2        MXITER, NFCOV, NGCOV, NVDFLT, NVSAVE, OUTLEV, PARPRT,
     3        PARSAV, PERM, PRUNIT, QRTYP, RDREQ, RMAT, SOLPRT, STATPR,
     4        VNEED, VSAVE, X0PRT
C
C  ***  IV SUBSCRIPT VALUES  ***
C
C/6
C     DATA ALGSAV/51/, COVPRT/14/, COVREQ/15/, DRADPR/101/, DTYPE/16/,
C    1     HC/71/, IERR/75/, INITH/25/, INITS/25/, IPIVOT/76/,
C    2     IVNEED/3/, LASTIV/44/, LASTV/45/, LMAT/42/, MXFCAL/17/,
C    3     MXITER/18/, NFCOV/52/, NGCOV/53/, NVDFLT/50/, NVSAVE/9/,
C    4     OUTLEV/19/, PARPRT/20/, PARSAV/49/, PERM/58/, PRUNIT/21/,
C    5     QRTYP/80/, RDREQ/57/, RMAT/78/, SOLPRT/22/, STATPR/23/,
C    6     VNEED/4/, VSAVE/60/, X0PRT/24/
C/7
      PARAMETER (ALGSAV=51, COVPRT=14, COVREQ=15, DRADPR=101, DTYPE=16,
     1           HC=71, IERR=75, INITH=25, INITS=25, IPIVOT=76,
     2           IVNEED=3, LASTIV=44, LASTV=45, LMAT=42, MXFCAL=17,
     3           MXITER=18, NFCOV=52, NGCOV=53, NVDFLT=50, NVSAVE=9,
     4           OUTLEV=19, PARPRT=20, PARSAV=49, PERM=58, PRUNIT=21,
     5           QRTYP=80, RDREQ=57, RMAT=78, SOLPRT=22, STATPR=23,
     6           VNEED=4, VSAVE=60, X0PRT=24)
C/
      DATA MINIV(1)/82/, MINIV(2)/59/, MINIV(3)/103/, MINIV(4)/103/,
     1     MINV(1)/98/, MINV(2)/71/, MINV(3)/101/, MINV(4)/85/
C
C-------------------------------  BODY  --------------------------------
C
      IF (PRUNIT .LE. LIV) IV(PRUNIT) = I7MDCN(1)
      IF (ALGSAV .LE. LIV) IV(ALGSAV) = ALG
      IF (ALG .LT. 1 .OR. ALG .GT. 4) GO TO 40
      MIV = MINIV(ALG)
      IF (LIV .LT. MIV) GO TO 20
      MV = MINV(ALG)
      IF (LV .LT. MV) GO TO 30
      ALG1 = MOD(ALG-1,2) + 1
      CALL V7DFL(ALG1, LV, V)
      IV(1) = 12
      IF (ALG .GT. 2) IV(DRADPR) = 1
      IV(IVNEED) = 0
      IV(LASTIV) = MIV
      IV(LASTV) = MV
      IV(LMAT) = MV + 1
      IV(MXFCAL) = 200
      IV(MXITER) = 150
      IV(OUTLEV) = 1
      IV(PARPRT) = 1
      IV(PERM) = MIV + 1
      IV(SOLPRT) = 1
      IV(STATPR) = 1
      IV(VNEED) = 0
      IV(X0PRT) = 1
C
      IF (ALG1 .GE. 2) GO TO 10
C
C  ***  REGRESSION  VALUES
C
      IV(COVPRT) = 3
      IV(COVREQ) = 1
      IV(DTYPE) = 1
      IV(HC) = 0
      IV(IERR) = 0
      IV(INITS) = 0
      IV(IPIVOT) = 0
      IV(NVDFLT) = 32
      IV(VSAVE) = 58
      IF (ALG .GT. 2) IV(VSAVE) = IV(VSAVE) + 3
      IV(PARSAV) = IV(VSAVE) + NVSAVE
      IV(QRTYP) = 1
      IV(RDREQ) = 3
      IV(RMAT) = 0
      GO TO 999
C
C  ***  GENERAL OPTIMIZATION VALUES
C
 10   IV(DTYPE) = 0
      IV(INITH) = 1
      IV(NFCOV) = 0
      IV(NGCOV) = 0
      IV(NVDFLT) = 25
      IV(PARSAV) = 47
      IF (ALG .GT. 2) IV(PARSAV) = 61
      GO TO 999
C
 20   IV(1) = 15
      GO TO 999
C
 30   IV(1) = 16
      GO TO 999
C
 40   IV(1) = 67
C
 999  RETURN
C  ***  LAST CARD OF IVSET FOLLOWS  ***
      END