| 209 |
|
This provides a convenient method for avoiding inappropriate calculations. |
| 210 |
|
The following library of pre-defined functions and variables is provided: |
| 211 |
|
.TP 10n |
| 212 |
+ |
.BR "in(n)" |
| 213 |
+ |
Return the value for input column |
| 214 |
+ |
.I n, |
| 215 |
+ |
or the number of columns available in this record if |
| 216 |
+ |
.I n |
| 217 |
+ |
is 0. |
| 218 |
+ |
This is an alternate way to get a column value instead of using |
| 219 |
+ |
the $N notation, and is more flexible since it is programmable. |
| 220 |
+ |
This function is disabled if an input format is used. |
| 221 |
+ |
.TP |
| 222 |
|
.BR "if(cond, then, else)" |
| 223 |
|
if cond is greater than zero, |
| 224 |
|
then is evaluated, otherwise else is evaluated. |
