157 lines
3.7 KiB
Plaintext
157 lines
3.7 KiB
Plaintext
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Turbo Pascal 5.5
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Turbo Calc Information
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Build Information
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-----------------
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The following files are provided in TCALC.ARC and are required
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in order to build TCALC.EXE:
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TCALC PAS
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TCCELL PAS
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TCCELLSP PAS
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TCHASH PAS
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TCINPUT PAS
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TCLSTR PAS
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TCMENU PAS
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TCPARSER PAS
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TCRUN PAS
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TCSCREEN PAS
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TCSHEET PAS
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TCUTIL PAS
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TCCOMPAR OBJ
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TCMVSMEM OBJ
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In addition, TCALC uses the OBJECTS module contained in the
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\TP\OOPDEMOS directory. Make sure OBJECTS.TPU is available (in
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the TCALC directory or in the UNIT DIRECOTRY) when building
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TCALC.
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Types of Cells
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--------------
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Value: A number.
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Text: A string - start it with a space to make sure that it
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doesn't get parsed.
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Formula: A string that is an expression (see explanation of
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expressions below). This cell will be constantly updated (if
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AutoCalc is on) to the current value of the expression.
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Repeat: A cell with a character that will repeat indefinitely
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across the spreadsheet. Type in the character that you want
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to repeat with a leading backslash (example: type \_ to get
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an underline across the screen).
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General Information
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-------------------
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Columns range from A to CRXO (65535), and rows range from 1 to
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65535.
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The little dot in the upper left of a spreadsheet tells you
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which of the spreadsheets is the current one. The number of the
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spreadsheet is also printed, along with 'F' if formula display
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is on and 'A' if AutoCalc is on.
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The file that the spreadsheet will be saved to is listed at the
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bottom of each spreadsheet, along with an asterisk if the
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spreadsheet has been updated.
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Expressions
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-----------
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Cell names in formulas are typed in with the column followed by
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the row:
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A1+A2
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B6^5
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To compute the sum of a group of cells, put a colon between the
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first cell and the last cell in the group:
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A1:A10 - Sum all of cells from A1 to A10 and puts the
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result in the current cell.
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A1:C10 - Sum of all of cells from A1 to A10, B1 to B10,
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and C1 to C10 and puts the result in the current
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cell.
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Available Functions
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-------------------
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ABS - absolute value
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ACOS - arc cosine
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ASIN - arc sine
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ATAN - arc tangent
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COS - cosine
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COSH - hyperbolic cosine
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EXP - exponential function
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LOG - logarithm
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LOG10 - base 10 logarithm
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POW10 - raise argument to the 10th power
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ROUND - round to the nearest whole number
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SIN - sine
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SINH - hyperbolic sine
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SQR - square
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SQRT - square root
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TAN - tangent
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TANH - hyperbolic tangent
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TRUNC - return the whole part of a number
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Examples:
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TRUNC(A1)
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SQRT(SQR(34.5))
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ABS(TRUNC(B16))
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Shortcut Commands
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-----------------
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AltX - Quit
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Ins - Turn block on and off
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Del - Delete current cell
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F2 - Save current spreadsheet
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AltF2 - Save as
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F3 - Replace current spreadsheet
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AltF3 - Load new spreadsheet (opens up additional window)
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F4 - Delete current spreadsheet
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F6 - Next spreadsheet
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F7 - Toggle formula display on/off
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F8 - Toggle AutoCalc on/off
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F9 - Recalc
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F10 - Main menu
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ASCII keys - Add cell
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The Parser
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----------
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The state and goto information for the parser was created using
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the UNIX YACC utility. The input to YACC was as follows:
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%token CONST CELL FUNC
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%%
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e : e '+' t
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| e '-' t
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| t
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;
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t : t '*' f
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| t '/' f
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| f
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;
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f : x '^' f
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| x
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;
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x : '-' u
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| u
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;
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u : CELL ':' CELL
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| o
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;
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o : CELL
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| '(' e ')'
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| CONST
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| FUNC '(' e ')'
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;
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%%
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