Macaulay Duration

Can anyone help me with a math library that calculates Macaulay Duration for US Government bonds?

I have the base formula online and have some legacy C code but it is not accurate.

I would have assumed that there would be a open source Math library out there I could use but I can't locate any.

Any help is much appreciated.

Thanks
-James
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James TalvyAsked:
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Kent OlsenDBACommented:
Hi James,

There are a lot of financial calculations, along with C implementations, documented here:

  http://finance.bi.no/~bernt/gcc_prog/algoritms_v1/algoritms.pdf

Hope it's what you need!

Kent
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James TalvyAuthor Commented:
I will take a look.  Thanks.
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James TalvyAuthor Commented:
This is not ideal since you have to pass in to his functions all of the broken out coupons etc.

Typically I have maturity, settlement date, dated date, first coupon date and yield and the function would work out all of the details.
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Kent OlsenDBACommented:
Ok.

OptionMatrix claims to perform Macaulay calculations:

  OptionMatrix

SourceCodeBrowser has a model in C++:

  SourceCodeBrowser

Its class is described here:

ClassModel
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James TalvyAuthor Commented:
Still working on this... I think QuantLib.org may work but trying to compile on Solaris x86...
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James TalvyAuthor Commented:
I got it compiled on Solaris x86 but have not yet successfully calculated yields that match established benchmarks.
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James TalvyAuthor Commented:
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