e04nsf may be used to supply individual optional parameters to
e04nqf. The initialization routine
e04npf must have been called before calling
e04nsf.
e04nsf may be used to supply values for optional parameters to
e04nqf. It is only necessary to call
e04nsf for those arguments whose values are to be different from their default values. One call to
e04nsf sets one argument value.
Each optional parameter is defined by a single character string,
of up to
characters,
consisting of one or more items. The items associated with a given option must be separated by spaces, or equals signs
. Alphabetic characters may be upper or lower case. The string
Print Level = 1
is an example of a string used to set an optional parameter. For each option the string contains one or more of the following items:
| – |
a mandatory keyword; |
| – |
a phrase that qualifies the keyword; |
| – |
a number that specifies an integer or real value. Such numbers may be up to contiguous characters
in Fortran's I, F, E or D formats,
terminated by a space if this is not the last item on the line. |
For
e04nsf, each user-specified option is not normally printed as it is defined, but this printing may be turned on using the keyword
List. Thus the statement
Call e04nsf ('List', cw, iw, rw, ifail)
turns on printing of this and subsequent options. Printing may be turned off again using the keyword
Nolist.
Optional parameter settings are preserved following a call to
e04nqf and so the keyword
Defaults is provided to allow you to reset all the optional parameters to their default values before a subsequent call to
e04nqf.
A complete list of optional parameters, their abbreviations, synonyms and default values is given in
Section 12 in
e04nqf.
None.
If on entry
or
, explanatory error messages are output on the current error message unit (as defined by
x04aaf).
Not applicable.
e04nrf,
e04ntf or
e04nuf may also be used to supply optional parameters to
e04nqf.