HP Forum Archive 21

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Bug in WP34S? Message #1 Posted by Namir on 5 Aug 2012, 11:55 a.m. Hi all, I am using WP34S emulator version 3.1, Build date June 2, 2012, Svn revision 3103. I wrote a program that compares the value of the X register in the stack with values in global registers. The tests (especially x<=? -> 22 and the like) did not return the expected logical result. Replacing indirect testing with old fashioned (HP-41C style) comparison made the program work as expected. Has this bug been caught and corrected in subsequent builds? Namir

Re: Bug in WP34S? Message #2 Posted by Walter B on 5 Aug 2012, 5:25 p.m., in response to message #1 by Namir Hi Namir, Please be a little bit more specific: What exactly did you try which doesn't work as expected? TIA

Re: Bug in WP34S? Message #3 Posted by Namir on 5 Aug 2012, 6:01 p.m., in response to message #2 by Walter B Walter, Here is an example. The 41-style code that works is: RCL 22 RCL 11 x<=? Y GTO 15 ... When memory register 11 has a value less than or equal to the value in memory register 22, the program executes the GTO 15 command. When I translated it to: RCL 11 x<=?-> 22 GTO 15 ... It won't work. The program ignores GTO 15 and moves on to the next commands. Am I using the new test in reverse? Should it be? RCL 22 x<=?-> 11 GTO 15 ... This "bug" appeared in several places in the program. When I translated the new stack-to-register tests to equivalent X/Y stack registers tests, the program worked. I would like to use the new WP34S features. My hope is that the WP34S program in question can make it to the web-based HP Solve newsletter. Namir Edited: 5 Aug 2012, 6:10 p.m.

Re: Bug in WP34S? Message #4 Posted by Paul Dale on 5 Aug 2012, 6:14 p.m., in response to message #3 by Namir I don't think you need the indirection. The code should be: RCL 11 x[<=]? 22 GTO 15 The conditional is looking into the register already. Adding indirection takes it to a completely different register based on the contents of register 22. - Pauli

Re: Bug in WP34S? Message #5 Posted by Paul Dale on 5 Aug 2012, 6:12 p.m., in response to message #1 by Namir Any chance of an example of this failure? I've tried a few simple tests and there doesn't seem to be anything wrong. Fro example: Reg Value 22 16 16 44 X 35 x[<=]->22 gives true. Change X to 66 and repeat gives false. All indirection is handled in a single place in the code, a bug here will manifest in other indirections in all likelihood. So I'd rather like to get this fixed. - Pauli

Re: Bug in WP34S? Message #6 Posted by Namir on 5 Aug 2012, 6:32 p.m., in response to message #5 by Paul Dale OK, I found what I was doing wrong. After I select a test, I need to click the ENTER key and then enter the register number. I was clicking the right-pointing arrow key on the top row and then entering a register number. Bad move! Sorry for the false alarm. I am going back to my code and edit it to correctly use this feature. Merci!!! Namir

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