Commit65cceae

authored

algorithm: signum (#1266)

1 parentf954fb1 commit65cceaeCopy full SHA for 65cceae

File tree

+44

-0

lines changed

+44

-0

lines changed

Lines changed: 25 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,25 @@`
	`1`	`+/*`
	`2`	`+ A program to demonstrate the implementation of the signum function,`
	`3`	`+ also known as the sign function, in JavaScript.`
	`4`	`+`
	`5`	`+ The signum function is an odd mathematical function, which returns the`
	`6`	`+ sign of the provided real number.`
	`7`	`+ It can return 3 values: 1 for values greater than zero, 0 for zero itself,`
	`8`	`+ and -1 for values less than zero`
	`9`	`+`
	`10`	`+ Wikipedia: https://en.wikipedia.org/wiki/Sign_function`
	`11`	`+*/`
	`12`	`+`
	`13`	`+/**`
	`14`	`+ *@param {Number} input`
	`15`	`+ *@returns {-1 \| 0 \| 1 \| NaN} sign of input (and NaN if the input is not a number)`
	`16`	`+ */`
	`17`	`+functionsignum(input){`
	`18`	`+if(input===0)return0`
	`19`	`+if(input>0)return1`
	`20`	`+if(input<0)return-1`
	`21`	`+`
	`22`	`+returnNaN`
	`23`	`+}`
	`24`	`+`
	`25`	`+export{signum}`

Lines changed: 19 additions & 0 deletions

Comments

(0)