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Copyright (C) 1999, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2011, 2012
Aleksandar Samardzic
Copying and distribution of this file, with or without modification, are
permitted in any medium without royalty provided the copyright notice
and this notice are preserved.
Version 1.1.9
* Fixed bug in math_step function implementation.
* Updated manual.
Version 1.1.8
* Fixed bugs in the Fortran interface.
* Updated pkg-config file.
Version 1.1.7
* Fixed wrong derivative calculation for erf function.
Version 1.1.6
* Added support for erorr function (erf).
Version 1.1.5
* Re-licensed under GNU Public License version 3.
Version 1.1.4
* Fixed test scripts to accommodate Guile 1.8 branch.
* Added support for pkg-config.
* Added some missing texinfo entries.
Version 1.1.3
* Fixed bug with using global instead of evaluator specific symbol table
variable in evaluator_get_variables() function.
Version 1.1.2
* Added support for constants e, log2(e), log10(e), ln(2), ln(10), pi,
pi/2, pi/4, 1/pi, 2/pi, 2/sqrt(pi), sqrt(2) and sqrt(1/2).
Version 1.1.1
* Fixed bug with not forgetting input string after encountering parsing
error.
Version 1.1.0
* Added support for number of mathematical functions (secantes,
cosecantes, Heaviside step and Dirac delta functions).
* Added method to get list of variables appearing in given expression.
* Fixed issue with passing 32-bit, instead of 64-bit, pointers to
Fortran code.
Version 1.0.2
* Lots of small fixes in order to improve portability.
Version 1.0.1
* Acceptable mathematical functions names changed to math.h like names.
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