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 03122010, 01:32 PM #1Member
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gov.sns.tools.math.ElementaryFunction
This package contains classes that contain methods to find the inverse hyerbolic functions directly by taking double as input ... i searched a lot to find the .jar containing this package but i'm unable to find..
By the way I found another jar containing another package  org.nfunk.jep.function .. this package too contains methods that claim to find the inverse hyperbolic functions but these methods take "Object" as input ....
and return as incompatible format...i succeeded in finding hyperbolic results by converting the object first into string and then the string into double.. but applying the same procedure for the inverse hyperbolic functions result into formats as "(5.192925985263684, 0.0)" so i am not able to extract value of my interest..
http://mirrors.ibiblio.org/pub/mirro...s/jep2.24.jar
Java Code:import org.nfunk.jep.function.*; import org.nfunk.jep.ParseException; public class xMain { public static void main(String[] args) { try { ArcCosineH obj = new ArcCosineH(); System.out.println(obj.acosh(90)); System.out.println(Double.valueOf(obj.acosh(90).toString()).doubleValue()); } catch (ParseException po) { } } }
the pakage i mentioned the first in the title takes input as double and results into double so thats no problem ... but i am not able to find the jar for the same ...please help me finding the jar file for this package..
 03122010, 01:36 PM #2Member
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 03122010, 02:07 PM #3
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Most likely that function anticipates for values < 1 where the answer is supposed to be a complex number. I peeked into that .jar and indeed I saw a Complex.class so I'm probably right. The answer to acosh(90) is correct and the imaginary component of the answer is zero. The expansion of that function is: acosh(z) == ln(z+sqrt(z1)*sqrt(z+1))
kind regards,
Jos
 03122010, 02:14 PM #4Member
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I peeked into that .jar and indeed I saw a Complex.class so I'm probably right.
The expansion of that function is: acosh(z) == ln(z+sqrt(z1)*sqrt(z+1))
BUt if i have an option for the direct implementationgov.sns.tools.math.ElementaryFunction
"(5.192925985263684, 0.0)"
 03122010, 02:15 PM #5Member
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can you help me finding the .jar file for the package that i mentioned in the title of this thread . thnx
 03122010, 02:34 PM #6
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I don't know; that .jar should have a description of its API, otherwise it's useless. My guess would be that the Complex class has the appropriate methods, e.g. getRealPart() and getImaginaryPart() (or similar). Never use a jar that you have scraped from the net without any documentation, programming is not a guessing game.
kind regards,
Jos
 03122010, 02:36 PM #7Member
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and what about the other package
??
 03122010, 02:44 PM #8
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 03122010, 02:49 PM #9Member
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