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version 2003
PA_GetRealField (tNum; fNum) → double
| Parameter | Type | Description | |
| tNum | short | → | Table number of the field to access |
| fNum | short | → | Field number of the field to access |
| Function result | double | ← | Value of the field |
Description
The routine
PA_GetRealField
returns the value of the real field number
fNum
of the current record of table number
tNum
.
If the field is not a real field, the routine returns 0.0 and an error code in
PA_GetLastError
.
Example
Check the value of a field.
double value;
value = PA_GetRealField( 1, 3 );
if ( PA_GetLastError() == eER_NoErr )
{
if ( value < 0.0 )
{
/* . . . */
}
}
See Also
Error Handling
Use
PA_GetLastError
to see if an error occurred (
eER_InvalidFileNumber
,
eER_InvalidFieldNumber
)