5 February 2023
20 July 2017
31 March 2015
functions to return complex results via a pointer argument rather than a
return value, since the latter is not generally binary compatible
between C++ and C.
Build script updates.
4 July 2006
Fixed the phase output column to have the same sign as the documentation (the sign was flipped). Thanks to Andrew Norton for the bug report.
-n option to flip the sign of the frequency
18 October 2005
20 May 2004
Impose a maximum number of basis modes (300) to prevent the matrices from getting too large.
Corrected typo in man page (for definition of
19 May 2004
Command line tool now defaults to a particular spectral "density"
(set by the
-d option), rather than a number of basis
modes, since using too many basis modes leads to a singular eigenproblem
and numerical instability. (Based on defaults from M&T
long double precision, if available, to reduce
accumulation of floating-point errors while computing Fourier/Z
18 May 2004
Corrected bug in frequency-error calculation; thanks to V. A. Mandelshtam for helpful discussions and for letting me look at his code to check against mine.
Amplitude calculation is no longer unstable for strongly decaying modes.
Used a more accurate eigensolver routine.
options to screen outputs with error/amplitude/Q too large/small/small,
-w option to use angular frequency instead of
More flexible input format: allow comma-delimited, a-bi as well as a+bi.
15 May 2004
15 May 2004
14 May 2004