Alpha Software Mobile Development Tools:   Alpha Anywhere    |   Alpha TransForm subscribe to our YouTube Channel  Follow Us on LinkedIn  Follow Us on Twitter  Follow Us on Facebook



The Alpha Software Forum Participation Guidelines

The Alpha Software Forum is a free forum created for Alpha Software Developer Community to ask for help, exchange ideas, and share solutions. Alpha Software strives to create an environment where all members of the community can feel safe to participate. In order to ensure the Alpha Software Forum is a place where all feel welcome, forum participants are expected to behave as follows:
  • Be professional in your conduct
  • Be kind to others
  • Be constructive when giving feedback
  • Be open to new ideas and suggestions
  • Stay on topic

Be sure all comments and threads you post are respectful. Posts that contain any of the following content will be considered a violation of your agreement as a member of the Alpha Software Forum Community and will be moderated:
  • Spam.
  • Vulgar language.
  • Quotes from private conversations without permission, including pricing and other sales related discussions.
  • Personal attacks, insults, or subtle put-downs.
  • Harassment, bullying, threatening, mocking, shaming, or deriding anyone.
  • Sexist, racist, homophobic, transphobic, ableist, or otherwise discriminatory jokes and language.
  • Sexually explicit or violent material, links, or language.
  • Pirated, hacked, or copyright-infringing material.
  • Encouraging of others to engage in the above behaviors.

If a thread or post is found to contain any of the content outlined above, a moderator may choose to take one of the following actions:
  • Remove the Post or Thread - the content is removed from the forum.
  • Place the User in Moderation - all posts and new threads must be approved by a moderator before they are posted.
  • Temporarily Ban the User - user is banned from forum for a period of time.
  • Permanently Ban the User - user is permanently banned from the forum.

Moderators may also rename posts and threads if they are too generic or do not property reflect the content.

Moderators may move threads if they have been posted in the incorrect forum.

Threads/Posts questioning specific moderator decisions or actions (such as "why was a user banned?") are not allowed and will be removed.

The owners of Alpha Software Corporation (Forum Owner) reserve the right to remove, edit, move, or close any thread for any reason; or ban any forum member without notice, reason, or explanation.

Community members are encouraged to click the "Report Post" icon in the lower left of a given post if they feel the post is in violation of the rules. This will alert the Moderators to take a look.

Alpha Software Corporation may amend the guidelines from time to time and may also vary the procedures it sets out where appropriate in a particular case. Your agreement to comply with the guidelines will be deemed agreement to any changes to it.

Bonus TIPS for Successful Posting

Try a Search First
It is highly recommended that a Search be done on your topic before posting, as many questions have been answered in prior posts. As with any search engine, the shorter the search term, the more "hits" will be returned, but the more specific the search term is, the greater the relevance of those "hits". Searching for "table" might well return every message on the board while "tablesum" would greatly restrict the number of messages returned.

When you do post
First, make sure you are posting your question in the correct forum. For example, if you post an issue regarding Desktop applications on the Mobile & Browser Applications board , not only will your question not be seen by the appropriate audience, it may also be removed or relocated.

The more detail you provide about your problem or question, the more likely someone is to understand your request and be able to help. A sample database with a minimum of records (and its support files, zipped together) will make it much easier to diagnose issues with your application. Screen shots of error messages are especially helpful.

When explaining how to reproduce your problem, please be as detailed as possible. Describe every step, click-by-click and keypress-by-keypress. Otherwise when others try to duplicate your problem, they may do something slightly different and end up with different results.

A note about attachments
You may only attach one file to each message. Attachment file size is limited to 2MB. If you need to include several files, you may do so by zipping them into a single archive.

If you forgot to attach your files to your post, please do NOT create a new thread. Instead, reply to your original message and attach the file there.

When attaching screen shots, it is best to attach an image file (.BMP, .JPG, .GIF, .PNG, etc.) or a zip file of several images, as opposed to a Word document containing the screen shots. Because Word documents are prone to viruses, many message board users will not open your Word file, therefore limiting their ability to help you.

Similarly, if you are uploading a zipped archive, you should simply create a .ZIP file and not a self-extracting .EXE as many users will not run your EXE file.
See more
See less

excel "rate()" function equivalent?

  • Filter
  • Time
  • Show
Clear All
new posts

  • excel "rate()" function equivalent?

    I am looking to perform the function that is computed with excel's "rate()" function - this provides the yield to maturity in the form of an APR.

    This is used in the insurance industry when an insured borrows funds to pay for their commercial insurance policy. We are required to provide to them the APR rate which is easily calculated in excel, but I need to port this to the web during online computation for new contracts.

    example: Excels function Rate(nper,pmt,pv,fv)
    where nper = number of payments, pmt = monthly payment, pv = present value and fv = future value
    real world example:
    22.859% = Rate(9,-91.47,750,0) * 12
    I need to be able to calculate the % as the answer, all values within the parentheses are known.

    I have searched everywhere to find what the actual formula is that runs behind the scenes when using the rate() function in excel but have come up empty handed. None of the standard formulas in xbasic seem to fit what I am looking for...

    the PV() function seems to contain all information except that the unknown is the rate
    PV() = (regular investment, interst rate, # of periods)

    using the numbers from the example above, we get the following...

    750 = (-91.47, ?%,9) is there some way to figure this out for the unknown %?

    Thanks for any help you may give.

    Any ideas?

  • #2
    Re: excel "rate()" function equivalent?

    Check out this page:


    • #3
      Re: excel "rate()" function equivalent?

      Thanks! It looks like it won't be easy but i think a while loop will help with the iteration process to determine the actual APR% using the formulas.

      Thanks so much!


      • #4
        Re: excel "rate()" function equivalent?

        Hi Eric,
        I have done these calculations a bit in C++
        So some notes for you,
        i Interest is the most problematic of the 5 to calculate,
        there is a way to calculate interest, however it basically sometime fails and gives errors.
        My prefered way of iterating for this is to break out of the loop, on either a number of loops processed or the error being relatively small.

        Also finally make sure you know whether your boss|| client is using Nominal Interest rates, or Actual Interest Rates
        Here is some aditional info
        If you can port the C code to XBasic, your worries may be over.


        • #5
          Re: excel "rate()" function equivalent?

          Hi Eric

          I have run into the same stumbling block you were in. Have you managed to find a solution to calculating the rate in Xbasic?

          Kind regards


          • #6
            Re: excel "rate()" function equivalent?

            I wrote my own functions since alpha's was close, but not there. This was for the auto industry and I had to match exactly What the big boys had already worked out.

            I can take amount, term, and apr to get payment. When faced with getting the apr on that payment , I kept the term, payment, and amount and ran a while loop up and down changing the apr each time until I got it. Alpha does this almost before you can blink. Done in a udf.
            Dave Mason
            [email protected]
            Skype is dave.mason46


            • #7
              Re: excel "rate()" function equivalent?

              Originally posted by DaveM View Post
              I wrote my own functions since alpha's was close, but not there. This was for the auto industry and I had to match exactly What the big boys had already worked out.

              I can take amount, term, and apr to get payment. When faced with getting the apr on that payment , I kept the term, payment, and amount and ran a while loop up and down changing the apr each time until I got it. Alpha does this almost before you can blink. Done in a udf.
              That sounds awesome David, and could maybe do the trick. Do you have some sample code that I could look at?