Symsysvar - Texas Instruments TI-89 Developer's Manual

Appendix A: System Routines — Variable Name Utilities

SymSysVar

Declaration: WORD SymSysVar (BYTE * StrName )
Category(ies): Variable Name Utilities
Description: Check if given variable is a system reserved variable stored in the symbol
table (in the MAIN folder).
StrName — Pointer to an ASCIIZ symbol name.
Inputs:
Outputs: Same return value as CheckSysFunc. But returns R_SYSVAR for
SysData and RegCoef.
Assumptions: None
Side Effects: None
Availability: All versions of the TI-89 / TI-92 Plus.
TI-89 / TI-92 Plus
Differences: None
See Also: CheckSysFunc, TokenizeSymName
Example: System reserved names always reside in the MAIN folder. In the
TokenizeSymName function, if the TSF_FULLY_QUALIFIED flag is set
and the variable does not already have a folder and it is not a system
reserved name (which needs no folder name) then one is added. The
check for the previous conditions is shown in the code fragment below.
if ((Flags & TSF_FULLY_QUALIFIED) && (strchr((char *)StrSymName, SYM_SEP) == NULL)
&& !SymSysVar(StrSymName)) {
/* . . . add folder name . . . */
}
TI-89 / TI-92 Plus Developer Guide Not for Distribution
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Beta Version January 26, 2001