Maintenance script: Initial automated import

2016-02-24T18:37:37Z

Initial automated import

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{{Template:TI-BASIC:Command
|picture=NEGATIVE.GIF
|summary=Returns the negative value of a number.
|syntax=‾''value''
|location=Press [(-)]
|compatibility=TI-83/84/+/SE
|size=1 byte
}}

The ‾ (negative) operator takes one number, variable, or expression and negates its value, thus returning the negative equivalent of it. The ‾ operator appears higher in the order of operations than both the [[TI-BASIC:Operators#relational|relational]] and [[TI-BASIC:Operators#logical|logical]] operators, so it will be executed first. In addition, it has the same order of operation as the other [[TI-BASIC:Operators#math|math]] operators, so the calculator simply executes them left to right in the order that they appear.

:‾1
-1

:5→X
:‾3(X+2
-21

:‾2→A:‾3→B
:AB
6

= Optimization =

When adding a negative number to a positive number, switch the two numbers around and change the addition to subtraction. This allows you to get rid of the ‾ sign and save a byte.

:‾A+B→C
can be
:B-A→C

This is not always the case, however: if you subtract a command that uses a lot of parentheses and is followed by a newline/colon/STO→ arrow, it'd save space to put the subtraction at the beginning of the line. For instance:

:inString(Ans,sub(Str1,1,1+int(log(A))))-1
can be
:‾1+inString(Ans,sub(Str1,1,1+int(log(A

= Error Conditions =

If an '''[[TI-BASIC:Errors#syntax|ERR:SYNTAX]]''' is being thrown near a subtraction or negation where there should be no errors, check to make sure that ‾ (negation) and - (subtraction) were not swapped by mistake.

= Related Commands =

* + ([[TI-BASIC:Add|Add]])
* - ([[TI-BASIC:Subtract|Subtract]])
* * ([[TI-BASIC:Multiply|Multiply]])
* / ([[TI-BASIC:Divide|Divide]])[[Category:TI-BASIC]]
[[Category:TIBD]]

TI-BASIC:Negative - Revision history

Maintenance script: Initial automated import