Something to try. Switch the order of the two ::REQUIRES to see if the problem goes away. It really does look like there's something that BSF4ooRexx is doing that causes this behavior, but it is puzzling that it doesn't happen on other platforms.
Rick On Sat, Jul 25, 2020 at 12:29 PM Rony G. Flatscher <rony.flatsc...@wu.ac.at> wrote: > To clarify: to the best of my knowledge BSF4ooRexx does nothing that would > explain this weird > behaviour on Linux. (It works as expected on Windows and MacOS.) > > ---rony > > P.S.: Ruurd came up with the idea that maybe the Java virtual machine that > gets loaded may cause > this effect on Linux (both, librxmath.so and libjvm.so, use sqrt from the > runtime). Even if so, this > awkward behaviour in Rexx should not be a side-effect of using any other > library together with Rexx. > > > On 25.07.2020 12:12, Ruurd Idenburg wrote: > > Running the attached script "rxmath.rex" will yield a weird result on > my Linux (Mint 19.3, which > > is based on Ubuntu 18.04) when the RxCalcSqrt function is called from > the RXBSF.REX for a > > non-perfect square (129). > > > > The code in RXBSF.REX does only ::REQUIRE BSF.CLS without using any of > its possibilities (unless > > some lines are uncommented) but in turn requires the Java library > "libjvm.so" > > > > It looks like the ::REQUIRE causes the sqrt function to produce a > different outcome of the > > resulting floating point number. > > > > When I run the code on a Windows 10 machine, the results from RXBSF.REX > are correct. Rony Flatcher > > ran the scripts on Darwin (MacOS) and there the results were correct too. > > > > I included the pure Rexx ::ROUTINE my_sqrt (more or less copied from > Walter Pachl's rxm.cls on > > Rosetta.org) to verify that that works OK. > > > > Also before calling RXBSF.REX from rxmath.rex and after returning from > RXBSF.REX the results of > > the RxMath rxCalcSqrt function are OK again. > > > > Seems to me that RxMath should not be impacted by another ::REQUIRE (if > that is the case??). > > > > Anybody with more system experience has some thoughts on how to tackle > this? > > > > Cheers, > > > > Ruurd > > > > P.S. > > > > I have now switched to the use of Walter Pachl's very nice package > (thanks Walter) that you can > > find here: > > > > <http://rosettacode.org/wiki/Trigonometric_functions#ooRexx> > > > > _______________________________________________ > Oorexx-devel mailing list > Oorexx-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/oorexx-devel >
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