Texas Instruments TI89 Developer Guide - Page 632
except that increment 0 always corresponds to the, the same
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590 Appendix A: System Routines - Graphing CptFuncX Declaration: BCD16 CptFuncX (BCD16 incs, GR_WIN_VARS * ptr) Category(ies): Graphing Description: Add the given number of ∆x increments (incs) to the original xmin of the specified graph viewing window. The current xmin will be different from the original xmin only if panning has occurred in function mode. CptFuncX is the same as XCvtPtoF, except that increment 0 always corresponds to the original xmin, which may not be column 0 after panning. Inputs: incs - Number of ∆x increments to the left (negative) or right (positive) of original xmin. Increment 0 always corresponds to the original xmin, before any panning that may have occurred. ptr - Pointer to the GR_WIN_VARS struct to use for viewing window values (gr_active for the active graph window, gr_other for the second graph in two graph mode). Outputs: Returns the x coordinate obtained by computing original xmin+∆x*incs in BCD16 floating point format, rounded to 12 digits. Assumptions: Assumes an x, y coordinate system, even in 3D mode. Side Effects: None Availability: All versions of the TI-89 / TI-92 Plus. TI-89 / TI-92 Plus Differences: None See Also: XCvtPtoF Example: for( inc = -10; inc
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