Qt6 QTranslator::load() uses [[nodiscard]] which currently leads to
compiler warnings. This is fixed using static_cast<void>.
Signed-off-by: ThomasZecha <zecha@ihp-microelectronics.com>
applicationDirPath() was used before a QApplication was instantiated
so it returned an empty path. This caused the application language
files path to be computed incorrectly.
Qucs Transcalc was using a fixed path (~/.qucs) to store and
retrieve the GUI input values, ignoring the QucsHomeDir that
could have been defined by the main GUI
To have qucs in a relocatable directory (in Windows) it cannot rely
the prefix given at build time. This is actually a bug.
This patch let each tool find the language files at runtime, relative
to the location of the executable.
The wave impedance equation was wrong. As given by Pozar's book (Page
113, Equation 3.86):
Z_{TE} = k * eta / beta
where k is the wave number, beta is the propagation constant and eta is
the intrinsic impedance of the waveguide. The problem was that eta was
calculated for e_r = 1 and mu_r = 1
It was missing a wire when generating a microstrip line in Transcalc.
This happened because the line 1249 at 'qucstranscalc.cpp' was
commented.
Steps to reproduce:
1) Open Transcalc (Ctrl+4)
2) Select 'Microstrip line' at the 'Transmission line type' combobox
3) Execute->Copy to clipboard
4) Paste in the Qucs schematic.
5) The vertical wire on the right is missing
The coplanar waveguide characteristics formulae were incorrect, mainly
due to an incorrect usage of the algorithm used to compute the complete
elliptic integral of the first kind K(); the argument passed to the
function was the elliptic modulus k, while the function was expecting
the parameter m=k^2.
The function providing K(k) was rewritten, in a slightly simpler form,
to accept the elliptic modulus k as input parameter.
The same formulae were corrected in both QucsTranscalc and qucsator.
The Technical Papers document was updated with a short description
of the algorithm used to compute K(k).
