RLAB3/RLABPLUS

RLaB3 is an interactive, interpreted scientific programming environment which provides fast prototyping and program development. Its syntax is a combination of c (curly brackets for blocks of statement, some statements) and M**LAB and fortran (indexing of arrays starts from 1).

The project provides a syntax update with some internal changes from RLaB2 to RLAB3, and adds a plethora of mathematical, string, input/output and visualization functions to RLAB3, all for 32- and 64-bit linux systems, for AMD, Intel and arm/RaspberryPi.

Changes in 3.1.3.1

1. Fixed some issues in date conversion funtions dstr2time() and jd2data() (thank to Andrew G. for pointing those out). Fixed some issues in libraries for rlab2 (as opposed to rlab3).

2. Added some pdf/cdf/invcdf functions to the list.

3. Fixed some issues with flag row_dominant=1 in min, max, minmax, mini, maxi functions.

Changes in 3.1.3.0

1. Removed a number of specialized libraries from the rlab tree, and put them on github as shared libraries so users can install them if they need them:

   - glpk: GNU linear programming kit

   - gphoto2: camera control and image download for usb connectable cameras

   - gpib: GPIB hardware and instrumentation control

   - gts: GNU triangulation library

   - kripto: cryptography functions

   - matio: MATLAB input/output library

   - ngspice: modeling of electronic/thermal circuits

2. Added a number of trigonometric functions that accept angle argument in degreees: sind, cosd, tand, asind, acosd, atand, atan2d.

3. A number of functions was split/rewritten into two forms:

   - parameter idempotent or regular, that is, they do not change their arguments, but rather return a new object with desired properties;

   - parameter mutating or reflexive, that is, they change their argument(s), without creation of new object.

   Consider an example:

   y = uniform(x);

   vs

   _uniform(x);

   The first one creates new matrix of the same size as 'x' and fills it with uniformly distributed random numbers in range [0,1] then attaches it to the variable 'y'.

   The second one fills the existing matrix 'x' with uniformly distributed random numbers.

   The reflexive functions have '_' prepended to their name: _capitalize, _ceil, _diff, _fliplr, _flipud, _floor, _gaussian, _round, _shiftd, _shiftl, _shiftr, _shiftu, _tolower, _toupper, _uniform.

   Notice that if variables share the same data, then reflexive function will make a fresh copy of the data and then change it, without touching the original data.

4. Added quaternion arithmetics to rlab, where a quaternion is a 4-tuple of reals. Supported functions are q_conj, q_create_rot, q_inv, q_mul, q_rot.

[PREVIOUS POSTS]

1. Changed boehm's garbage collector to gc-8.0.4. This may not build right on the older linuces that are known to work with gc-7.4.4. To fix the regression, go to clibs/ and change symbolic link gc to version you want or can use on your linux system.
2. Modified scripts so that builds with other versions of gcc installed on the system are possible. E.g., to build with gcc-10, add this to your configure command: ./configure --with-gcc=10 ....other.flags.... Note: flags are added to default flags that allow rlab to compile on gcc-10, see Makefile.in.
3. Many solvers were rewritten to allow better callback of rlab-scripted functions. In particular, it is possible to call solvers recursevely, e.g., ninitegrate().
4. Continuing work on cleaning/leaning/deglitching the code.

Changes in 3.1.1.10 [2.6.1.10]

1. Fixed configure script: HDF flags can be passed to configure for systems with multiple HDF5 libraries installed (e.g., on ubuntu to choose between hdf5/serial and hdf5/openmpi):

export HDF5_LIBS="-lhdf5 -lopenmpi"; export HDF5_INCLS="-Ihdf5/openmpi -Iopenmpi"; \ ./rconfigure3_rpi

or

export HDF5_LIBS="-lhdf5"; export HDF5_INCLS="-Ihdf5/serial"; \ ./rconfigure3_rpi

1. Continuing work on cleaning/leaning/deglitching the code.

Changes in 3.1.1.9 [2.6.1.9]

1. Added 'mkfilter' and some gsl filter functions under 'filter', but only for gsl version 2 or better.
2. Continuing work on cleaning/leaning/deglitching the code.

Changes in 3.1.1.8 [2.6.1.8]

1. Fixed long standing bug in the parser on Raspberry Pi's that prevented classdef from working.

Changes in 3.1.1.7 [2.6.1.7]

1. Minor fixes of gphoto2 library.
2. Minor fixes of pgplot library.
3. Minor fixes in imagemagick - rlabplus now supports either version 6 or 7. Version 6 is on opensuse up to 42.3 and up to the latest raspbian. Version 7 is on opensuse 15.0. The version is detected through pkg-config utility. Behavior of the build on systems that have both libraries installed is for now untested.
4. Minor changes and fixes to existing functions, e.g., ifelse, bwlabel, cluster, hist, rot90.
5. Continuing work on cleaning/leaning/deglitching the code.

Changes in 3.1.1.6 [2.6.1.6]

1. Configuration/Makefile script now can build also on ubuntu/debian distributions (this was tested on raspberry pi 1 and 3).
2. Fixed more internal routines.
3. Continuing work on cleaning/leaning/deglitching the code.

Changes in 3.1.1.5 [2.6.1.5]

1. Maintenance release. Improved configuration script.
2. Fixes to some internal routines, e.g., reads(), which now can read-in huge text files (few MBs). Continuing work on cleaning/leaning/deglitching the code.

Changes in 3.1.1.4 [2.6.1.4]

1. xfig classdef now available for creation of vector graphics and is fully documented.
2. Some fixes of ImageMagick interfaces with improved documentation.
3. Fixes to some internal routines. Continuing work on cleaning/leaning/deglitching the code.
4. Dummy library ieee removed from build.

Changes in 3.1.1.3 [2.6.1.2]

1. Maintenance release. Continuing work on cleaning/leaning/deglitching the code.
2. Reintroduced built-in superlu-3 and umfpack-4/amd-1 for sparse matrices rather than shared libraries because of the change in input parameters in some functions in superlu-4. This removes dependency on shared libraries superlu and suitesparse that seem to have been available only with opensuse distribution anyway.
3. Resolved some glitches in parser (classdef can now be up to 120kB big, switch-statement accepts values - as in results of algabraic expression - as well as variables).

Changes in 3.1.1.2 [2.6.1.*]

1. Added flag --rlab2 for user to use rlab2 parser instead of the default rlab3 parser. Fixed rconfigure{2,3}-* scripts so they end with 'make scanner' which either copies perser files, or if user has bison/flex installed tries to build the parser. To use provided files DO NOT use flags --with-bison and --with-flex.
2. Fixing glitches in parser/interpreter: the parser should now work fine with script files with UNIX as well as with MSDOS line endings.
3. Fixed pgplot library for oldtimers. Flag --with-pgplot should work without need to download pgplot sources from ftp://ftp.astro.caltech.edu/pub/pgplot/pgplot5.2.tar.gz.
4. Continuing work on cleaning/leaning/deglitching the code.
5. Miscelaneous improvements to existing functions. New functions.

Changes in 3.1.1.1

1. Fixing glitches in parser/interpreter: In rlab-3.1.1.1 the file-static variables from the file containing the classdef environment are accessible inside classdef. Previously, it was the file in which classdef was executed which file-static variables were accessible.
2. Continuing work on cleaning/leaning/deglitching the code.
3. Miscelaneous improvements to existing functions.

Changes in 3.1.0.0 Changes in 2.6.0.0

1. Further changes to parser/interpreter:

(a) rlab-3.1 and rlab-2.6: classdef(...){...} environment accepts static(...) declaration for class-member private properties and methods. (b) rlab-2.6 differs from rlab-3.1 ONLY in if-else statement: rlab-2.6: if (cond) { ... else ... } [full support for legacy scripts] rlab-3.1: if (cond) { ... } else { ... }

1. Continuing work on cleaning/leaning/deglitching the code.
2. Miscelaneous improvements to existing functions.

Changes in 3.1.0.0

1. Further changes to parser/interpreter:

(a) classdef(...){...} environment with private(...), public(...) and instantiation variables that allows programmatic creation of lists (class members). The list entries can be either variables (public properties) or functions (public methods), where all so created lists (class members) share constructor-static common entries which can be either variables (private properties) or functions (private methods). Their syntax and usage partially follows C++ (in that :: is not supported).

(b) Special system variable 'ans' is distinguished from operator '?': - ending statement without ';' causes it to be assigned to 'ans', and then printed. This may be convinient for command-line computations; - ending statement with '?' causes it to be only printed.

(c) Strings can now be defined over multiple lines: parser looks for pair of matching " "

(d) Internal fixes that prevent segfaults in case of scripts full of errors.

Changes in 3.0.6.0

1. Major changes in PARSER which make rlab3 not-compatible with rlab2:

(a) New format of the if-else-command follows c-language: if (cond) { ... } if (cond) { ... } else { ... } if (cond) { ... } else if (cond) { ... } ... rather then the old-style if (cond) { ... else ... } [ rlab2 ] NB: To change your files to new format, replace 'else' with '} else {', e.g., using the following script ONCE: # copy old file with extension .r to files with extension .r3 rename .r .r3 .r # change else command in .r3 files sed -i -e 's/ else/ } else {/g' .r3

(b) added for-then and while-then constructs that follow the python's for-else and while-else.

(c) added do-while/until loop that follows c-language (do-while) do { ... } while/until (cond);

(d) added switch command that follows c-language definition, with that difference that part of the case statement can be an expression or variable.

(e) added element-wise operations +=, -=, *= and /= mostly without storage of intermediate results.

(f) static declaration of variables allowed inside function body, which specifies function-static variables, which values are kept between function calls.

(g) EOF token that stops processing of the current file and returns control either to calling file or to the prompt.

(h) script{} environment that allows programmatic manipulations of scripts.

1. rlab3 is configured so it can coexist with rlab2 on the same system. The rlab2 keeps the extension "*.r" , while rlab3 takes on ".r3"

Changes in 2.5.0.3

1. Improved configure script. Unneeded libraries are removed from configuration.

Changes in 2.5.0.2

1. Continuing work on cleaning/leaning/deglitching the code. Improved build script so it reacts properly to two different versions of plplot library (libplplot.so vs. libplplotd.so).
2. Fixes of glitches in plplot interface. Better documentation in rlabplus manual.
3. Added Powell optimization solvers newuoa (unconstrained), bobyqa (simply constrained), lincoa (linear constraint), and cobyla (functional constraint).

Changes in 2.5.0.1

1. Continuing work on cleaning/leaning/deglitching the code.
2. Improved interface to plplot - now it is more gnuplot-like within rlab environment.
3. Miscelaneous improvements to existing functions, e.g., hist().

Changes in 2.5.0.0

1. EXPERIMENTAL New data type MATRIX_DENSE_ENTITY, or 'cell' (matrix-like collection of rlab objects, accessed by the indices, just like regular matrix) that is an alternative to 'list' (unstructured collection, accessed with a key);
2. Continuing work on cleaning/leaning/deglitching the code: e.g., readm.

Changes in 2.4.2.5

1. Continuing work on cleaning/leaning/deglitching the code.

Changes in 2.4.2.4

1. Continuing work on cleaning/leaning/deglitching the code: ImageMagick interface.
2. Improved command line interface to rlab and scripts. More options for serial port.

Changes in 2.4.2.3

1. Continuing work on cleaning/leaning/deglitching the code. Overhaul of some functions with more options added, c.f., floor, ceil, mean, var, covar, polyval, polyder.
2. Modifications of parser: now accepts comments during a multi-line definition of an array. The scripts relying this feature may be incompatible with older versions.

Changes in 2.4.2.2

1. Continuing work on cleaning/leaning/deglitching the code.
2. Further work on parser: Now it recognizes c-style comments / ... /, that is, ignores them.
3. Minor fixes in many libraries (libooo, libsystem, libstdio, to mention a few) so that they better handle error conditions.
4. String functions now fully integrate Pattern matching, cf., findstr, strindex(r), strsplt, strtod, lstrip/rstrip/strip, gsub, grep, readm, reads.

Changes in 2.4.2.1

1. Experimental implementation of string functions based on Pattern matching library.

Changes in 2.4.2.0

1. Continuing work on cleaning/leaning/deglitching the code.
2. Added feature to parser that recognizes integers: in hexadecimal format using prefices "0x" or "0X," e.g., 0x034; in binary format using postfices "B" or "b," e.g., 10010101B; or as plain integer using postfices "l" or "L," e.g., 47891491741L. This may make scripts for latest versions incompatible with the older versions. E.g., a statement 'x=0xaa' creates an integer variable which content is 170 in decimal notation. Previously this could have been accomplished through sequence of statements 'x=int(strtod("0xaa"))'
3. added some manipulations with integers, e.g., bit-rotation and bit-shift.
4. expanded h5 family of functions.

Changes in 2.4.1.2

1. Continuing work on cleaning/leaning/deglitching the code.
2. Reworked neural network solvers that used to be tied to (now extinct) library sprann. These are now hooked up to "c-library" for pattern recognition.

Changes in 2.4.1.1

1. Fixed segfault occuring on some systems caused when parser would encounter error in the script. Partial fix segfaults as a result of repeated errors that occur when the 'eval' function has improper argument, e.g., evaluate value of expression in which there are undefined variables, >> clear(x); eval("x+6")
2. Further fixing of the scanner: changed type of 'nargs' within function call from 'double' to 'MDR' so that it can be operated on.
3. Modified 'make' script so that internally 'make scanner' preceeds 'make rlab'.
4. Continuing work on cleaning/leaning/deglitching the code.

Changes in 2.4.1.0

1. Fixed segfault occuring when calling solvers with (functions with no arguments) as arguments.
2. Fixed backward compatibility with gsl (e.g., robust linear fit was introduced recently, rlab can be linked to old versions of gsl).

Changes in 2.4.0.0

1. Thorough internal reorganization of solvers that call functions as arguments. A number of mini memory leaks have been resolved in the process. Certain invocation procedures modified so their execution is 10-20% faster. Haxes replaced by procedures uniform across different solvers.

Changes in 2.3.3.8

1. Continuing work on cleaning/leaning/deglitching the code. Case in point: preventing existing functions to cause segmentation fault or return non-sensical results if their arguments were not correct. E.g., y = ifelse(x==[], 1, x[1]) used to fail if x is empty matrix because the function would assume that all three supplied arguments exist (here, x[1] does not exist if x is an empty matrix). E.g., polyval(x,a) treats properly any vector 'a', rather then just row vector. Previously, if 'a' was column vector it would go internally out of bounds, and return non-sensical result. Please note, in helping me eliminate such glitches I encourage you to send me nonsenses, or segfaults rlab creates while running your scripts.
2. More work on incorporating NaN's in rlab workings, e.g., see functions diff() or quot().
3. Fixed functions writem() when operating on hdf5 file in append mode: it deletes previous value of the object before entering new one. Also writem("somefilename.h5", [], "/hdf/abs/object/name") will delete object "/hdf/abs/object/name" if argument is empty matrix.

Changes in 2.3.3.7

1. Continuing work on cleaning/leaning/deglitching the code.

Changes in 2.3.3.6

1. Continuing work on cleaning/leaning/deglitching the code.
2. More work on patterns in function 'compact', set operations now work with string vectors as well.
3. sorting function has now three ways of dealing with nans: put them on top of the list, on bottom, or leave them in place.

Changes in 2.3.3.5

1. Continuing work on cleaning/leaning/deglitching the code.
2. Some work on patterns is implemented in the function 'match'
3. Added operation with sets, some functionality with tables. All can tolerate nans.

Changes in 2.3.3.4

1. Fixed corrupted 'y.tab.h' file in 2.3.3.3.
2. Continuing work on cleaning/leaning/deglitching the code.

Changes in 2.3.3.3 Changes in 2.3.3.2

1. Continuing work on cleaning/leaning/deglitching the code.
2. Modified build script so that flex and bison can be used through 'make scanner'. Updated default rlab parser to output of flex 2.5.37.

Changes in 2.3.3.1

1. Continuing work on cleaning/leaning/deglitching the code.

Changes in 2.3.3.0

1. Consolidated rlab complex codes.
2. Continuing work on adding more options to existing solvers, and cleaning/leaning/deglitching the code: case in point harminv and time-frequency toolbox.

Changes in 2.3.2.3

1. Continuing work on adding more options to existing solvers, and cleaning/leaning/deglitching the code.
2. Fixed build script: It can recognize libngspice on 32-bit systems. It builds the .bin. version without any addons with pgplot for plotting - see ./rconfigure_low32 in source root directory.

Changes in 2.3.2.2

1. Added suggested build script for Raspberry Pi, "rconfigure_rpi." Rlab tested and operational on Raspberry Pi running opensuse 13.1. Binary version available, as well. Fixed different "#define" statements so that the same sources can be built on either of three architectures, armv6l, x86 & x86_64.

2. Continuing work on adding more options to existing solvers, and cleaning/leaning/deglitching the code.

Changes in 2.3.2.1

1. Continuing work on adding more options to existing solvers, and cleaning/leaning/deglitching the code: emphasis on date time funcions.

Changes in 2.3.2.0

1. New internal type: dense matrix, existing dense matrix formats converted to dense matrix type.
2. Continuing work on adding more options to existing solvers, and cleaning/leaning/deglitching the code. Statistical functions improved so to ignore nan's.
3. Improved plplot interface: it now accepts lists for plotting 3-d lines and surfaces (plsplot) "mesh" style or "3d" style, and contours (plcont). Improved interna efficiency of data transfer to plplot.
4. Pattern recognition functions added: classify, cluster, distance matrix, localabsmaxi, localrelmaxi.

Changes in 2.3.1.8

1. Continuing work on adding more options to existing solvers, and cleaning/leaning/deglitching the code.
2. Updated configure script so to handle properly ImageMagick and gphoto2 library configurations. User still has to request the feature during configuring.

Changes in 2.3.1.7

1. Continuing work on adding more options to existing solvers, and cleaning/leaning/deglitching the code, e.g., prompt, or 'ans'.

Changes in 2.3.1.6

1. Continuing work on adding more options to existing solvers, and cleaning/leaning/deglitching the code. Silent upgrades completed.

Changes in 2.3.1.5

1. Continuing work on adding more options to existing solvers, and cleaning/leaning/deglitching the code.

Changes in 2.3.1.4

1. Continuing work on adding more options to existing solvers, and cleaning/leaning/deglitching the code.
2. Deglitched extraction of rlabplus-addons, so that scaled down version of rlab+rlabplus compiles even on old 32-bit machines (currently oldest machine that runs rlab is a toshiba laptop 1GHz, 512MB RAM, with suse 11.1 on it). Its configuration is given in script 'myconfigure_low32'.
3. Please note: All binaries available on the sourceforge are built using 'myconfigure_low32'. For all rlab+rlabplus features one has to build from sources.

Changes in 2.3.1.3

1. Continuing work on adding more options to existing solvers, and cleaning/leaning/deglitching the code: fixed some internal lack of features and overly optimistic dealing with non-existent variables.
2. Fixed omission in 'configure' script so that location of the jvm is properly passed to rlab start-up script. Same with some other libraries.
3. Finished filter. It works now for complex numbers as well.

Changes in 2.3.1.2

1. Changes in configuration of rlab. I was hit by blast from the past: most of special-topic libraries added to rlab as a part of rlabplus are now optional, and need to be specified during 'configure' to be included. This was done so that rlab can be built on very old laptops running even older linuces (do you remember kde3.5?). What is still required are: hdf, gsl, curl shared library. On older systems arpack, glpk and superlu might be available as static libraries. Configure script takes that into account: One still needs to specify only the directory where the library resides, and hope that the headers are available through /usr/include. Overall, these are the latest flags needed to build rlab totally (see also 'myconfigure' script that lists them all):

./configure --with-jvm=[where is my JVM located? 'myconfigure' can find it for you] --with-ngspice=[where did I put shared ngspice when I built it? 'myconfigure' can try to find it] --with-arpack[=/dir/to/static or shared library, but only if different from default locations] --with-superlu[=/dir/to/static or shared library, but only if different from default locations] --with-im[=/dir/to/shared library, but only if different from default locations] --with-gphoto2[=/dir/to/shared library, but only if different from default locations] --with-plplot[=/dir/to/shared library, but only if different from default locations], or --with-pgplot, for the latter rlab contains its source tree - needed for old systems without plplot --enable-python[=/dir/to/shared library, but only if different from default locations] --with-suitesparse[=/dir/to/shared library, but only if different from default locations] --enable-glpk[=/dir/to/static or shared library, but only if different from default locations]

Default behavior is not to install any. Even then, one gets system with bunch of improvements and new features, with many a bug or glitch fix.

Changes in 2.3.1.1

1. Continuing work on adding more options to existing solvers, and cleaning/leaning/deglitching the code: fixed some HDF bugs and glitches: 'isfile' works, reading and writing string matrices works.
2. Additional features to existing solvers, e.g. mean/var. Fixed filter function: it can now take the initial output as input parameter. Fixed 'eval' function: does not segfault if improper input.
3. Statistical lists <<val;wgt>> now support algabraic operations +, -, ./, .\, ., and . Some functions, e.g., mean,var, ..., support them from before.
4. Fixed glpk so it properly compiles on older version of the library (parameters have changed recently).
5. Fixed rgphoto in regards to nonexistent uint8_t type.
6. Rebuilt the plplot interface, as any further work on pgplot has been ceased (it blows on xinerama setup, creates windows that take half screen - 1 monitor). Most pgplot commands and structures should work under plplot: the two have almost identical functions. User now has to choose between --with-plplot and --with-pgplot flags when 'configure'-ing.
7. 'ans' variable stores the most recent result of command line calculations.

Changes in 2.3.1.0

1. Fixed build-up script and rectified some omissions.
2. Added libgphoto2 through new command list 'gp'. If not wanted configure rlab with '--disable-gphoto2'
3. Added parts of ImageMagick through new command list 'image'. If not wanted configure rlab with '--disable-im'
4. Updated GLPK wrapper to work with versions of GLPK 4.52 and higher: Do I need to put this with --disable-glpk flag?
5. Cleaning/leaning/deglitching of the code. Minor fixes to some mathematic functions, e.g., mod.
6. If building from sources, there is a script 'myconfigure' which tries to figure out flags for compilation in regards to python, java, spice.

Changes in 2.3.0.4

1. Fixed documentation omission. Flag for using java virtual machine should read --with-jvm=/dir/where/yourlibjvm.so.is and it should not contain the file name libjvm.so itself. Silly me. Also fixed some other glitches in configure script.
2. Cleaning/leaning/deglitching of the code. Modified output of diffevol solver and added convergence controls.

Changes in 2.3.0.3

1. Notable new solver: a version of differential evolution algorithm is now available as solver 'diffevol'.
2. Continuing work on adding more options to existing solvers, and cleaning/leaning/deglitching the code.

Changes in 2.3.0.2

1. Build flags are better defined in configure script --disable-python (by default it is enabled, provides command list 'py') --with-jvm=/usr/lib64/libjvm.so (by default it is disabled, if enabled provides command list 'jvm') --with-ngspice (by default it is disabled, if enabled provides command list 'spice')
2. Added support for ngspice built as a shared library.
3. Updated to the latest version of the Boehm's Garbage Collector (gc-7.2).
4. Continuing work on adding more options to existing solvers, and cleaning/leaning/deglitching the code.

Changes in 2.3.0.1

1. Removed static libraries arpack, amdpack, umfpack and superlu, and replaced them with the shared object ones available from your linux distribution - check install.txt.
2. Continuing work on: adding more options to existing solvers and functions, and cleaning/leaning/deglitching the code: fixed ngspice, added calendar library.
3. Add a calendar/date/time toolbox.

Changes in 2.2.12.16

1. Added jvm set of functions that allow rlab to call java methods and passes parameters to them and get results from them.
2. Continuing work on: adding more options to existing solvers and functions, and cleaning/leaning/deglitching the code.

Changes in 2.2.12.15

1. Added flag -e "cmds" so that commands can be executed when invoking rlab2 from the command line. The flag parameter "cmds" does not allow white spaces (feature of GNU getopt).
2. Fixed 'configure' script so that gcc version is correctly recognized.
3. Continuing work on: adding more options to existing solvers and functions, and cleaning/leaning/deglitching the code.

Changes in 2.2.12.14

1. fixed build script - glpk was improperly removed.

Changes in 2.2.12.13

1. libglpk removed from source. User needs to download the library and development files, and install them on his/her own.
2. Fixed wrong location of rlab headers in python.c.in
3. Fixed glitch in main.c that appears in newer versions of gcc, related to 'yydebug'

Changes in 2.2.12.12

1. Fixed build script for python, so it builds properly on opensuse and fedora systems (thanks a.g.).
2. Continuing work on: adding more options to existing solvers and functions, and cleaning/leaning/debugging the code.
3. More functions, e.g., showkey, prompt, inputs.

Changes in 2.2.12.11

1. Embedded python interpreter is now available.
2. Added some more options to existing solvers.
3. Continued work on removing bugs, and buglets, and code cleaning.

Changes in 2.2.12.10

1. 'make flibs' now builds pgplot
2. fixed linking issues between 64 and 32-bit versions (each links to its respective /usr/lib{64} libraries). Fixed variable in 'configure' so that the system architecture is properly registered - should work on opensuse and redhat fedora systems.
3. continuous work on code cleaning and glitches removal.

Changes in 2.2.12.8

1. Fixed the configure/Makefile so it properly links to libraries on fedora systems (and not just on opensuse32/64) [Thanks a.g.]. Fixed some of the testfiles. Clean-up/tidying the source code for some solvers that rely on fortran solvers (resolved segfaults that occur when fortran code is expected to write run-time messages). Fixed glitches in gsl solvers for minimization.

Changes in 2.2.12.7

1. Functions fwrite/fseek/fread now work without glitches. 'fseek' requires file to be open prior to seeking it. Code now passes the script 'test.r'.

Changes in 2.2.12.6

1. Fixed some memory leaks in read/write functions to the serial port. Added more options to the open-function.
2. Added some more solvers: harminterp. Modified some existing solvers: linterp and findroot.
3. Reviewed sections of the code. Fixed some small memory leaks.

Changes in 2.2.12.5

1. Succesfully tested sockets on ethernet connected instruments - they have reached near-production quality. Same minor changes in some system functions: tic()/toc() now have a microsecond precision. Modifified/expanded some solvers, e.g., linterp.

Changes in 2.2.12.4

1. configuration of rlab is changed. The script ./configure no longer checks for the presence of flex. Instead it uses the file provided with the distribution that was built with flex-2.5.35, and then fixed by hand. Added is option 'make scanner' that checks the file 'scanner.l' against local installation of flex and tries to compile the result. Such installation, however, has to be put in 'Makefile.in' by hand in line where '@FLEX@' is defined.
2. Added are few solvers, and some bugs and lack of features are corrected.
3. Sprannlib has been removed.

Changes in 2.2.12.3

1. The directory 'examples' transferred to the rlab-test collection of files that user has to install in his/hers home directory, under ~/rlab/test.
2. More of the gsl: cumulative probability functions

Changes in 2.2.12.2

1. Changes in internal handling of open HDF5 files that removed few remaining glitches in basic HDF5 handling functionality. The reliability is now at the production level for files containing rlab recognized data.
2. Added more options to some existing solvers, e.g., findmins.
3. More functions and operators are now matrix optimized (addition, subtraction, multiplication and division by element)
4. Added some gcc "#define"'s so that rlab builds properly on 32- and 64-bit architectures. Fixed install script (was for version 2.2.11).

Changes in 2.2.12.1

Slight Modification of HDF5: 1. rlab scalar variables, i.e., matrices of size 1x1 are written as scalars (HDF5 data set of rank 0) rather then as matrices (HDF5 data set of rank 2, with dimensions 1 and 1). 2. When writing non-scalar vectors and matrices to HDF5 objects, an attribute "Transpose" with the value of unity is appended to them. This is to indicate to other software that is used to access the data that it needs to be transposed. If rlab reads a matrix that does not have that attribute with that value then it internally transposes it. 3. The format of writing (and reading) of the sparse real and complex matrices to a HDF5 file has changed to minimize recopying of the structure. An HDF5 storage of a sparse matrix is a compound of 7 variable length arrays (6 integer, 1 double, or double-double - complex, that is).

Changes in 2.2.12.0

1. Read/write operations: (a) Limited access to HDF5 - can read and write all data types native to rlab, and can access atomic data sets within any HDF5 file. No support planned for special HDF5 data types, e.g., compounds & c, except in the context of native data types. (b) Integrated with cURL, so rlab can now read, download and upload web pages and files to and from local filesystem and into the memory. (c) Limited support for sockets, and their read and write operations.
2. More code cleaning and more glitches removed.