CAT_FGT0$<$t$>$ - Get the value of a scalar expression or field for a given row

Description:

Get the value of a scalar expression or field for a given row. The row may be in either a catalogue, selection or index.

Invocation:

CALL CAT_FGT0$<$t$>$ (CI, ROWNO, GI; VALUE, NULFLG; STATUS)

Arguments:

CI = INTEGER (Given)

Catalogue, selection or index identifier. The row number, ROWNO (below), refers to the row number in the catalogue, selection or index, as appropriate.

ROWNO = INTEGER (Given)

Number of the row to be read.

GI = INTEGER (Given)

Identifier for either an expression, field or parameter.

VALUE = $<$type$>$ (Returned)

Value to which the expression evaluates for the current row buffer.

NULFLG = LOGICAL (Returned)

A flag indicating whether or not the expression evaluates to the null value or not: .TRUE. - The expression is null, .FALSE. - The expression is not null; a genuine value is available.

STATUS = INTEGER (Given and Returned)

The global status.

Copyright

Copyright (C) 1999 Central Laboratory of the Research Councils

Bugs:

None known