Display Line Operation - IBM 5100 Basic Reference Manual

92
Arithmetic Expressions
I-Format: The integer, consisting of a sign (blank or minus) and up to 13 significant
decimal digits for integers whose absolute value is less than 1 E+14, is printed or
displayed.
E-Format: The floating-point number, consisting of a sign (blank or minus), up to 13 sig-
nificant decimal digits, a decimal point following the first digit, the letter E, and a
signed exponent consisting of one or two digits is printed or displayed. The E-format
is used to print or display numbers whose absolute value is less than 1 E-1 or greater
than or equal to 1 E+14. Printed or displayed values are rounded off, not truncated.
F-Format: The fixed-point number, consisting of a sign (blank or minus) up to 13 signif-
icant digits, and a decimal point in the appropriate position is printed or displayed.
The F-format is used to print or display values not included in the preceding 1- or
E-format descriptions.
Display Line Operation
As the values of expressions are transferred to the display screen, an internal char-
acter-position pointer is maintained to keep track of the next available position
where a character (or digit) can be placed. The movement of this line-position
pointer before, during, and after displaying an expression depends on the type of
expression and the delimiter following it in the PRINT statement. Figure 10 shows
the pointer actions that are possible.
The position of the display line-position pointer can be moved forward (to a higher-
numbered character position) by using the TAB function.
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