[Main]
Name=StepCk
Type=Function
Subtype=ROM Call
Header Files=graphing.h
Definition=void StepCk (float *indep);
See Also=graphing.h/CkValidDelta, error.h/

[ROM Call]
Index=$1DD

[Description]
Verifies that the input min, max, and step values are valid in parametric or polar mode.

[Explanation]
StepCk verifies that the input min, max, and step values in the array pointed to by
<I>indep</I> are valid values for the independent variable in parametric mode
(tmin, tmax, and tstep) or polar mode (&#952;min, &#952;max, and &#952;step). The
function will return to the calling routine if the values are valid, otherwise an
error is thrown.
<BR><BR>
<I>indep</I> is a pointer to an array of floating-point values where
indep[0] = min, indep[1] = max, and indep[2] = step.
<BR><BR>
An error is thrown if the input values are not valid for the independent
variable in parametric mode or polar mode, such as the step value being
negative when it should have been positive for the given min and max.

[References]
In=bascmd.h/cmd_blddata, bascmd.h/cmd_drawparm, bascmd.h/cmd_drawpol, unknown.h/deStepCk, unknown.h/Regraph
Out=graphing.h/CkValidDelta, timath.h/floor, unknown.h/_bcd_math
