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 (C) 1999 Central Laboratory of the Research Councils

None known