Asech(x)
Last updated October 16, 2001
Version: 1 | Requires: ColdFusion 5 | Library: MathLib
Description:
Returns the inverse hyperbolic secant of a value. All angles are expressed in radians.
Return Values:
Returns a numeric value or string.
Example:
<CFSET y=2>
<CFOUTPUT>
Given x=#x#:<BR>
Given y=#y#<BR>
Asech(x)=#Asech(x)#<BR>
Asech(y)=#Asech(y)#<BR>
</CFOUTPUT>
Parameters:
| Name | Description | Required |
|---|---|---|
| x | 0 < x <= 1 | Yes |
Full UDF Source:
<cfscript>
/**
* Returns the inverse hyperbolic secant of a value.
*
* @param x 0 < x <= 1
* @return Returns a numeric value or string.
* @author Rob Brooks-Bilson (rbils@amkor.com)
* @version 1, October 16, 2001
*/
function Asech(x){
if (x lte 0)
return "undefined";
else
if (x gt 1)
return "undefined";
else
return Log((Sqr(-x*x+1)+1)/x);
}
</cfscript>
Search CFLib.org
Latest Additions
Tayo Akinmade added
arrayTrim
4 day(s) ago
Will Belden added
longTime
9 day(s) ago
James Sleeman added
quickSort
19 day(s) ago
Ben Forta added
GetHostAddress
22 day(s) ago
Top Rated
EksporSQLData
Rated 5.0, 16 time(s)
backupDatabase
Rated 5.0, 13 time(s)
indentXml
Rated 5.0, 10 time(s)
generateSsccAsn
Rated 5.0, 4 time(s)