ADAS Subroutine xxmadd

      SUBROUTINE XXMADD( NR , NC , X , A , Y , B , C )
C
C
C-----------------------------------------------------------------------
C
C  ****************** FORTRAN77 SUBROUTINE: XXVADD *********************
C
C  PURPOSE: ADDS TWO MATRICES WITH MULTIPLIER FOR EACH.
C
C  CALLING PROGRAM: GENERAL USE.
C
C  INPUT : (I*4)  NR      = NUMBER OF ROWS IN MATRICES 'A' AND 'B'.
C  INPUT : (I*4)  NC      = NUMBER OF COLUMNS IN MATRICES 'A' AND 'B'.
C  INPUT : (R*8)  X       = FIRST MULTIPLIER.
C  INPUT : (R*8)  A(,)    = FIRST MATRIX.
C                           1ST DIMENSION: NR
C                           2ND DIMENSION: NC
C  INPUT : (R*8)  Y       = SECOND MULTIPLIER.
C  INPUT : (R*8)  B(,)    = SECOND MATRIX.
C                           1ST DIMENSION: NR
C                           2ND DIMENSION: NC
C
C  OUTPUT: (R*8)  C       = OUTPUT MATIRX.
C                           1ST DIMENSION: NR
C                           2ND DIMENSION: NC
C
C          (I*4)  I       = LOOP INDEX.
C          (I*4)  J       = LOOP INDEX.
C
C ROUTINES: NONE
C
C AUTHOR:  JONATHAN NASH (TESSELLA SUPPORT SERVICES PLC)
C          K1/0/81
C          JET EXT. 5183
C
C DATE:    10/11/93
C
C UNIX-IDL PORT:
C
C AUTHOR:  WILLIAM OSBORN (TESSELLA SUPPORT SERVICES PLC)
C
C DATE:    22ND MAY 1996
C
C VERSION: 1.1                          DATE: 22-05-96
C MODIFIED: WILLIAM OSBORN
C               - FIRST VERSION. IBM VERSION NOT CHANGED
C
C-----------------------------------------------------------------------
C
C----------------------------------------------------------------------
      INTEGER             NC,          NR
      REAL*8              A(NR,NC),    B(NR,NC),    C(NR,NC),    X
      REAL*8              Y