Errors
Summary of Error Messages
Error Messages:
 Following is a listing of the various error messages that can be
 displayed by this program.  To clear an error message simply
 press any key.

Error 0 - Improper Mathematical Operation:
 Error 0 is displayed if you try to perform any of the following:
 divide by 0.
 Y to the X where Y=0 and X<=0, or Y<=0 and X is non-integer.
 Square root X where X<0.
 1/X where X=0.  LOG where X<=0.
 LN where X<=0.
 SIN to the -1 where the absolute X>1.
 COS to the -1 where the absolute X>1.
 STO divide by where X=0.
 Delta % where Y=0.
 HYP to the -1 COS where absolute X<1.
 HYP to the -1 TAN where absolute X>1.
 C Y,X and P Y,X where X or Y are non-integer, or X or Y is less
 than 0, or X>Y, or X>=10 to the 10.

Error 1 - Storage Register Overflow:
 If the value to be stored in any of the storage registers as a
 result of any storage register arithmetic function would be
 greater than 9.999999999E+99 Error 1 is raised and the contents
 of the target storage register is not updated.

Error 2 - Improper Statistical Operation:
 Error 2 occurs if you attempt to perform any of the following
 operations:
 Mean x where n=0.
 Standard Deviation where n<=1.
 Linear Regression or Linear Estimation where N<=1.
 If division by 0 or the square root of a negative number should
 occur during the evaluation of any of the statistical functions
 Error 2 is also raised.

Error 3 - Improper Register Number:
 Error 3 occurs during the STO, RCL indirect or during storage
 register arithmetic indirect functions if the absolute value of
 the integer part of the value stored in I is greater than 19.

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