Texas Instruments TI-89 - Checksysfunc

1118
Appendix A: System Routines — Variable Name Utilities
TI
-
89 / TI
-
92 Plus Developer Guide
Not for Distribution
Beta Version January 26, 2001
CheckSysFunc
Declaration:
WORD
CheckSysFunc
(BYTE *
SymName
, short *
RetFuncNum
)
Category(ies):
Variable Name Utilities
Description:
Check for graph functions and other special names and return the type of
the variable passed or zero otherwise.
Inputs:
SymName
— C pointer to the first letter of an untokenized symbol
name (does not point to the zero byte terminator).
Outputs:
RetFuncNum
— If not NULL and
SymName
was a valid graph function
name or C_COL then return the function/column
number (1 . . . 99) at the WORD pointed to by
RetFuncNum
.
Returns — zero — Not a system function
or special name.
GR_FUNC — y1 . . . y99
GR_PAR — xt1 . . . xt99,
yt1 . . . yt99
GR_POL — r1 . . . r99
GR_SEQ — u1 . . . r99
GR_3D — z1 . . . z99
GR_DE — y’1 . . . y’99
SEQ_INITC — ui1 . . . ui99
DE_INITC — yi1 . . . yi99
DE_FLDPIC — FldPic
UNIT_VAR — Name begins with a
leading underscore.
C_COL — c1 . . . c99
R_REGEQ — RegEq
SOLVER_SYS_VARS — Exp, Eqn
Assumptions:
None
Side Effects:
None
Availability:
All versions of the TI
-
89 / TI
-
92 Plus.
(continued)