Perform inter-column maths (using TRANSFORM, SUN/61) The expressions and functions recognised have Fortran types and syntax. Any construct that is legal in TRANSFORM is legal in this subroutine, with the additional function INDEX for filling the array with an increasing sequence of integers. See SUN/61 for further details.

The names used for the data areas are as follows:

• "X" – the XCOL data area,

• "Y" – the YCOL data area,

• "Z" – the ZCOL data area,

• "EX" – the EXCOL error area,

• "EY" – the EYCOL error area.

X = _CHAR (Read)

Y = _CHAR (Read)

Z = _CHAR (Read)

EX = _CHAR (Read)

EY = _CHAR (Read)

PONGO$>$ CCMATH X=2$\ast$Y

will fill each element of the XCOL data area with twice the corresponding element of the YCOL data area.

• More than one array may be manipulated with a single command.

• The INDEX function cannot be combined with any other function.