!$Author$
!$Date$
!$Revision$
!$HeadURL$

      INTEGER FUNCTION ipmpar(i)
!-----------------------------------------------------------------------
!
!     IPMPAR PROVIDES THE INTEGER MACHINE CONSTANTS FOR THE COMPUTER
!     THAT IS USED. IT IS ASSUMED THAT THE ARGUMENT I IS AN INTEGER
!     HAVING ONE OF THE VALUES 1-10. IPMPAR(I) HAS THE VALUE ...
!
!  INTEGERS.
!
!     ASSUME INTEGERS ARE REPRESENTED IN THE N-DIGIT, BASE-A FORM
!
!               SIGN ( X(N-1)*A**(N-1) + ... + X(1)*A + X(0) )
!
!               WHERE 0 .LE. X(I) .LT. A FOR I=0,...,N-1.
!
!     IPMPAR(1) = A, THE BASE.
!
!     IPMPAR(2) = N, THE NUMBER OF BASE-A DIGITS.
!
!     IPMPAR(3) = A**N - 1, THE LARGEST MAGNITUDE.
!
!  FLOATING-POINT NUMBERS.
!
!     IT IS ASSUMED THAT THE SINGLE AND DOUBLE PRECISION FLOATING
!     POINT ARITHMETICS HAVE THE SAME BASE, SAY B, AND THAT THE
!     NONZERO NUMBERS ARE REPRESENTED IN THE FORM
!
!               SIGN (B**E) * (X(1)/B + ... + X(M)/B**M)
!
!               WHERE X(I) = 0,1,...,B-1 FOR I=1,...,M,
!               X(1) .GE. 1, AND EMIN .LE. E .LE. EMAX.
!
!     IPMPAR(4) = B, THE BASE.
!
!  SINGLE-PRECISION
!
!     IPMPAR(5) = M, THE NUMBER OF BASE-B DIGITS.
!
!     IPMPAR(6) = EMIN, THE SMALLEST EXPONENT E.
!
!     IPMPAR(7) = EMAX, THE LARGEST EXPONENT E.
!
!  DOUBLE-PRECISION
!
!     IPMPAR(8) = M, THE NUMBER OF BASE-B DIGITS.
!
!     IPMPAR(9) = EMIN, THE SMALLEST EXPONENT E.
!
!     IPMPAR(10) = EMAX, THE LARGEST EXPONENT E.
!
!-----------------------------------------------------------------------
!
!     TO DEFINE THIS FUNCTION FOR THE COMPUTER BEING USED, ACTIVATE
!     THE DATA STATMENTS FOR THE COMPUTER BY REMOVING THE C FROM
!     COLUMN 1. (ALL THE OTHER DATA STATEMENTS SHOULD HAVE C IN
!     COLUMN 1.)
!
!-----------------------------------------------------------------------
!
!     IPMPAR IS AN ADAPTATION OF THE FUNCTION I1MACH, WRITTEN BY
!     P.A. FOX, A.D. HALL, AND N.L. SCHRYER (BELL LABORATORIES).
!     IPMPAR WAS FORMED BY A.H. MORRIS (NSWC). THE CONSTANTS ARE
!     FROM BELL LABORATORIES, NSWC, AND OTHER SOURCES.
!
!-----------------------------------------------------------------------
!     .. Scalar Arguments ..
      INTEGER i
!     ..
!     .. Local Arrays ..
      INTEGER IMACH(10)
!     ..
!     .. Data statements ..
!
!     MACHINE CONSTANTS FOR AMDAHL MACHINES.
!
!     DATA IMACH( 1) /   2 /
!     DATA IMACH( 2) /  31 /
!     DATA IMACH( 3) / 2147483647 /
!     DATA IMACH( 4) /  16 /
!     DATA IMACH( 5) /   6 /
!     DATA IMACH( 6) / -64 /
!     DATA IMACH( 7) /  63 /
!     DATA IMACH( 8) /  14 /
!     DATA IMACH( 9) / -64 /
!     DATA IMACH(10) /  63 /
!
!     MACHINE CONSTANTS FOR THE AT&T 3B SERIES, AT&T
!     PC 7300, AND AT&T 6300.
!
!     DATA IMACH( 1) /     2 /
!     DATA IMACH( 2) /    31 /
!     DATA IMACH( 3) / 2147483647 /
!     DATA IMACH( 4) /     2 /
!     DATA IMACH( 5) /    24 /
!     DATA IMACH( 6) /  -125 /
!     DATA IMACH( 7) /   128 /
!     DATA IMACH( 8) /    53 /
!     DATA IMACH( 9) / -1021 /
!     DATA IMACH(10) /  1024 /
!
!     MACHINE CONSTANTS FOR THE BURROUGHS 1700 SYSTEM.
!
!     DATA IMACH( 1) /    2 /
!     DATA IMACH( 2) /   33 /
!     DATA IMACH( 3) / 8589934591 /
!     DATA IMACH( 4) /    2 /
!     DATA IMACH( 5) /   24 /
!     DATA IMACH( 6) / -256 /
!     DATA IMACH( 7) /  255 /
!     DATA IMACH( 8) /   60 /
!     DATA IMACH( 9) / -256 /
!     DATA IMACH(10) /  255 /
!
!     MACHINE CONSTANTS FOR THE BURROUGHS 5700 SYSTEM.
!
!     DATA IMACH( 1) /    2 /
!     DATA IMACH( 2) /   39 /
!     DATA IMACH( 3) / 549755813887 /
!     DATA IMACH( 4) /    8 /
!     DATA IMACH( 5) /   13 /
!     DATA IMACH( 6) /  -50 /
!     DATA IMACH( 7) /   76 /
!     DATA IMACH( 8) /   26 /
!     DATA IMACH( 9) /  -50 /
!     DATA IMACH(10) /   76 /
!
!     MACHINE CONSTANTS FOR THE BURROUGHS 6700/7700 SYSTEMS.
!
!     DATA IMACH( 1) /      2 /
!     DATA IMACH( 2) /     39 /
!     DATA IMACH( 3) / 549755813887 /
!     DATA IMACH( 4) /      8 /
!     DATA IMACH( 5) /     13 /
!     DATA IMACH( 6) /    -50 /
!     DATA IMACH( 7) /     76 /
!     DATA IMACH( 8) /     26 /
!     DATA IMACH( 9) / -32754 /
!     DATA IMACH(10) /  32780 /
!
!     MACHINE CONSTANTS FOR THE CDC 6000/7000 SERIES
!     60 BIT ARITHMETIC, AND THE CDC CYBER 995 64 BIT
!     ARITHMETIC (NOS OPERATING SYSTEM).
!
!     DATA IMACH( 1) /    2 /
!     DATA IMACH( 2) /   48 /
!     DATA IMACH( 3) / 281474976710655 /
!     DATA IMACH( 4) /    2 /
!     DATA IMACH( 5) /   48 /
!     DATA IMACH( 6) / -974 /
!     DATA IMACH( 7) / 1070 /
!     DATA IMACH( 8) /   95 /
!     DATA IMACH( 9) / -926 /
!     DATA IMACH(10) / 1070 /
!
!     MACHINE CONSTANTS FOR THE CDC CYBER 995 64 BIT
!     ARITHMETIC (NOS/VE OPERATING SYSTEM).
!
!     DATA IMACH( 1) /     2 /
!     DATA IMACH( 2) /    63 /
!     DATA IMACH( 3) / 9223372036854775807 /
!     DATA IMACH( 4) /     2 /
!     DATA IMACH( 5) /    48 /
!     DATA IMACH( 6) / -4096 /
!     DATA IMACH( 7) /  4095 /
!     DATA IMACH( 8) /    96 /
!     DATA IMACH( 9) / -4096 /
!     DATA IMACH(10) /  4095 /
!
!     MACHINE CONSTANTS FOR THE CRAY 1, XMP, 2, AND 3.
!
!     DATA IMACH( 1) /     2 /
!     DATA IMACH( 2) /    63 /
!     DATA IMACH( 3) / 9223372036854775807 /
!     DATA IMACH( 4) /     2 /
!     DATA IMACH( 5) /    47 /
!     DATA IMACH( 6) / -8189 /
!     DATA IMACH( 7) /  8190 /
!     DATA IMACH( 8) /    94 /
!     DATA IMACH( 9) / -8099 /
!     DATA IMACH(10) /  8190 /
!
!     MACHINE CONSTANTS FOR THE DATA GENERAL ECLIPSE S/200.
!
!     DATA IMACH( 1) /    2 /
!     DATA IMACH( 2) /   15 /
!     DATA IMACH( 3) / 32767 /
!     DATA IMACH( 4) /   16 /
!     DATA IMACH( 5) /    6 /
!     DATA IMACH( 6) /  -64 /
!     DATA IMACH( 7) /   63 /
!     DATA IMACH( 8) /   14 /
!     DATA IMACH( 9) /  -64 /
!     DATA IMACH(10) /   63 /
!
!     MACHINE CONSTANTS FOR THE HARRIS 220.
!
!     DATA IMACH( 1) /    2 /
!     DATA IMACH( 2) /   23 /
!     DATA IMACH( 3) / 8388607 /
!     DATA IMACH( 4) /    2 /
!     DATA IMACH( 5) /   23 /
!     DATA IMACH( 6) / -127 /
!     DATA IMACH( 7) /  127 /
!     DATA IMACH( 8) /   38 /
!     DATA IMACH( 9) / -127 /
!     DATA IMACH(10) /  127 /
!
!     MACHINE CONSTANTS FOR THE HONEYWELL 600/6000
!     AND DPS 8/70 SERIES.
!
!     DATA IMACH( 1) /    2 /
!     DATA IMACH( 2) /   35 /
!     DATA IMACH( 3) / 34359738367 /
!     DATA IMACH( 4) /    2 /
!     DATA IMACH( 5) /   27 /
!     DATA IMACH( 6) / -127 /
!     DATA IMACH( 7) /  127 /
!     DATA IMACH( 8) /   63 /
!     DATA IMACH( 9) / -127 /
!     DATA IMACH(10) /  127 /
!
!     MACHINE CONSTANTS FOR THE HP 2100
!     3 WORD DOUBLE PRECISION OPTION WITH FTN4
!
!     DATA IMACH( 1) /    2 /
!     DATA IMACH( 2) /   15 /
!     DATA IMACH( 3) / 32767 /
!     DATA IMACH( 4) /    2 /
!     DATA IMACH( 5) /   23 /
!     DATA IMACH( 6) / -128 /
!     DATA IMACH( 7) /  127 /
!     DATA IMACH( 8) /   39 /
!     DATA IMACH( 9) / -128 /
!     DATA IMACH(10) /  127 /
!
!     MACHINE CONSTANTS FOR THE HP 2100
!     4 WORD DOUBLE PRECISION OPTION WITH FTN4
!
!     DATA IMACH( 1) /    2 /
!     DATA IMACH( 2) /   15 /
!     DATA IMACH( 3) / 32767 /
!     DATA IMACH( 4) /    2 /
!     DATA IMACH( 5) /   23 /
!     DATA IMACH( 6) / -128 /
!     DATA IMACH( 7) /  127 /
!     DATA IMACH( 8) /   55 /
!     DATA IMACH( 9) / -128 /
!     DATA IMACH(10) /  127 /
!
!     MACHINE CONSTANTS FOR THE HP 9000.
!
!     DATA IMACH( 1) /     2 /
!     DATA IMACH( 2) /    31 /
!     DATA IMACH( 3) / 2147483647 /
!     DATA IMACH( 4) /     2 /
!     DATA IMACH( 5) /    24 /
!     DATA IMACH( 6) /  -126 /
!     DATA IMACH( 7) /   128 /
!     DATA IMACH( 8) /    53 /
!     DATA IMACH( 9) / -1021 /
!     DATA IMACH(10) /  1024 /
!
!     MACHINE CONSTANTS FOR THE IBM 360/370 SERIES,
!     THE ICL 2900, THE ITEL AS/6, THE XEROX SIGMA
!     5/7/9 AND THE SEL SYSTEMS 85/86.
!
!     DATA IMACH( 1) /    2 /
!     DATA IMACH( 2) /   31 /
!     DATA IMACH( 3) / 2147483647 /
!     DATA IMACH( 4) /   16 /
!     DATA IMACH( 5) /    6 /
!     DATA IMACH( 6) /  -64 /
!     DATA IMACH( 7) /   63 /
!     DATA IMACH( 8) /   14 /
!     DATA IMACH( 9) /  -64 /
!     DATA IMACH(10) /   63 /
!
!     MACHINE CONSTANTS FOR THE IBM PC.
!
!      DATA imach(1)/2/
!      DATA imach(2)/31/
!      DATA imach(3)/2147483647/
!      DATA imach(4)/2/
!      DATA imach(5)/24/
!      DATA imach(6)/-125/
!      DATA imach(7)/128/
!      DATA imach(8)/53/
!      DATA imach(9)/-1021/
!      DATA imach(10)/1024/
!
!     MACHINE CONSTANTS FOR THE MACINTOSH II - ABSOFT
!     MACFORTRAN II.
!
!     DATA IMACH( 1) /     2 /
!     DATA IMACH( 2) /    31 /
!     DATA IMACH( 3) / 2147483647 /
!     DATA IMACH( 4) /     2 /
!     DATA IMACH( 5) /    24 /
!     DATA IMACH( 6) /  -125 /
!     DATA IMACH( 7) /   128 /
!     DATA IMACH( 8) /    53 /
!     DATA IMACH( 9) / -1021 /
!     DATA IMACH(10) /  1024 /
!
!     MACHINE CONSTANTS FOR THE MICROVAX - VMS FORTRAN.
!
!     DATA IMACH( 1) /    2 /
!     DATA IMACH( 2) /   31 /
!     DATA IMACH( 3) / 2147483647 /
!     DATA IMACH( 4) /    2 /
!     DATA IMACH( 5) /   24 /
!     DATA IMACH( 6) / -127 /
!     DATA IMACH( 7) /  127 /
!     DATA IMACH( 8) /   56 /
!     DATA IMACH( 9) / -127 /
!     DATA IMACH(10) /  127 /
!
!     MACHINE CONSTANTS FOR THE PDP-10 (KA PROCESSOR).
!
!     DATA IMACH( 1) /    2 /
!     DATA IMACH( 2) /   35 /
!     DATA IMACH( 3) / 34359738367 /
!     DATA IMACH( 4) /    2 /
!     DATA IMACH( 5) /   27 /
!     DATA IMACH( 6) / -128 /
!     DATA IMACH( 7) /  127 /
!     DATA IMACH( 8) /   54 /
!     DATA IMACH( 9) / -101 /
!     DATA IMACH(10) /  127 /
!
!     MACHINE CONSTANTS FOR THE PDP-10 (KI PROCESSOR).
!
!     DATA IMACH( 1) /    2 /
!     DATA IMACH( 2) /   35 /
!     DATA IMACH( 3) / 34359738367 /
!     DATA IMACH( 4) /    2 /
!     DATA IMACH( 5) /   27 /
!     DATA IMACH( 6) / -128 /
!     DATA IMACH( 7) /  127 /
!     DATA IMACH( 8) /   62 /
!     DATA IMACH( 9) / -128 /
!     DATA IMACH(10) /  127 /
!
!     MACHINE CONSTANTS FOR THE PDP-11 FORTRAN SUPPORTING
!     32-BIT INTEGER ARITHMETIC.
!
!     DATA IMACH( 1) /    2 /
!     DATA IMACH( 2) /   31 /
!     DATA IMACH( 3) / 2147483647 /
!     DATA IMACH( 4) /    2 /
!     DATA IMACH( 5) /   24 /
!     DATA IMACH( 6) / -127 /
!     DATA IMACH( 7) /  127 /
!     DATA IMACH( 8) /   56 /
!     DATA IMACH( 9) / -127 /
!     DATA IMACH(10) /  127 /
!
!     MACHINE CONSTANTS FOR THE SEQUENT BALANCE 8000.
!
!     DATA IMACH( 1) /     2 /
!     DATA IMACH( 2) /    31 /
!     DATA IMACH( 3) / 2147483647 /
!     DATA IMACH( 4) /     2 /
!     DATA IMACH( 5) /    24 /
!     DATA IMACH( 6) /  -125 /
!     DATA IMACH( 7) /   128 /
!     DATA IMACH( 8) /    53 /
!     DATA IMACH( 9) / -1021 /
!     DATA IMACH(10) /  1024 /
!
!     MACHINE CONSTANTS FOR THE SILICON GRAPHICS IRIS-4D
!     SERIES (MIPS R3000 PROCESSOR).
!
!     DATA IMACH( 1) /     2 /
!     DATA IMACH( 2) /    31 /
!     DATA IMACH( 3) / 2147483647 /
!     DATA IMACH( 4) /     2 /
!     DATA IMACH( 5) /    24 /
!     DATA IMACH( 6) /  -125 /
!     DATA IMACH( 7) /   128 /
!     DATA IMACH( 8) /    53 /
!     DATA IMACH( 9) / -1021 /
!     DATA IMACH(10) /  1024 /
!
!     MACHINE CONSTANTS FOR IEEE ARITHMETIC MACHINES, SUCH AS THE AT&T
!     3B SERIES, MOTOROLA 68000 BASED MACHINES (E.G. SUN 3 AND AT&T
!     PC 7300), AND 8087 BASED MICROS (E.G. IBM PC AND AT&T 6300).
!
      DATA IMACH( 1) /     2 /
      DATA IMACH( 2) /    31 /
      DATA IMACH( 3) / 2147483647 /
      DATA IMACH( 4) /     2 /
      DATA IMACH( 5) /    24 /
      DATA IMACH( 6) /  -125 /
      DATA IMACH( 7) /   128 /
      DATA IMACH( 8) /    53 /
      DATA IMACH( 9) / -1021 /
      DATA IMACH(10) /  1024 /
!
!     MACHINE CONSTANTS FOR THE UNIVAC 1100 SERIES.
!
!     DATA IMACH( 1) /    2 /
!     DATA IMACH( 2) /   35 /
!     DATA IMACH( 3) / 34359738367 /
!     DATA IMACH( 4) /    2 /
!     DATA IMACH( 5) /   27 /
!     DATA IMACH( 6) / -128 /
!     DATA IMACH( 7) /  127 /
!     DATA IMACH( 8) /   60 /
!     DATA IMACH( 9) /-1024 /
!     DATA IMACH(10) / 1023 /
!
!     MACHINE CONSTANTS FOR THE VAX 11/780.
!
!     DATA IMACH( 1) /    2 /
!     DATA IMACH( 2) /   31 /
!     DATA IMACH( 3) / 2147483647 /
!     DATA IMACH( 4) /    2 /
!     DATA IMACH( 5) /   24 /
!     DATA IMACH( 6) / -127 /
!     DATA IMACH( 7) /  127 /
!     DATA IMACH( 8) /   56 /
!     DATA IMACH( 9) / -127 /
!     DATA IMACH(10) /  127 /
!
      ipmpar = IMACH(i)
      RETURN

      END