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cl:functions:math-subtract [2019/09/14 05:00] |
cl:functions:math-subtract [2020/08/05 19:00] (current) |
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| + | ====== Function - ====== | ||
| + | |||
| + | ====Syntax==== | ||
| + | * **-** //number// → //negation// | ||
| + | * **-** //minuend ''&rest'' subtrahends''+''// → //difference// | ||
| + | |||
| + | ====Arguments and Values==== | ||
| + | * //number//, //minuend//, //subtrahend// - a //[[CL:Glossary:number]]//. | ||
| + | * //negation//, //difference// - a //[[CL:Glossary:number]]//. | ||
| + | |||
| + | ====Description==== | ||
| + | The //[[CL:Glossary:function]]// **[[CL:Functions:-]]** performs arithmetic subtraction and negation. | ||
| + | |||
| + | If only one //number// is supplied, the negation of that //number// is returned. | ||
| + | |||
| + | If more than one //[[CL:Glossary:argument]]// is given, it subtracts all of the //subtrahends// from the //minuend// and returns the result. | ||
| + | |||
| + | The //[[CL:Glossary:function]]// **[[CL:Functions:-]]** performs necessary type conversions. | ||
| + | |||
| + | ====Examples==== | ||
| + | <blockquote> | ||
| + | (- 55.55) <r>-55.55 </r> | ||
| + | (- #c(3 -5)) <r>#C(-3 5) </r> | ||
| + | (- 0) <r>0 </r> | ||
| + | ([[CL:Functions:eql]] (- 0.0) -0.0) <r>//[[CL:Glossary:true]]// </r> | ||
| + | (- #c(100 45) #c(0 45)) <r>100 </r> | ||
| + | (- 10 1 2 3 4) <r>0 </r> | ||
| + | </blockquote> | ||
| + | |||
| + | ====Affected By==== | ||
| + | None. | ||
| + | |||
| + | ====Exceptional Situations==== | ||
| + | Might signal **[[CL:Types:type-error]]** if some //[[CL:Glossary:argument]]// is not a //[[CL:Glossary:number]]//. Might signal **[[CL:Types:arithmetic-error]]**. | ||
| + | |||
| + | ====See Also==== | ||
| + | * {\secref\NumericOperations} | ||
| + | * {\secref\RationalComputations} | ||
| + | * {\secref\FloatingPointComputations} | ||
| + | * {\secref\ComplexComputations} | ||
| + | |||
| + | ====Notes==== | ||
| + | None. | ||
