GiNaC

This release fixes the parser to read GiNaC::lst again. It fixes a compile warning (relevant to openSUSE build). It fixes a bug concerning the substitutions in indexed expressions (subs_options::no_index_renaming was ignored).

Several internal assertions in the debug version were fixed. A more verbose report of (auto-)configuration problems is provided. A compilation problem with ginsh when using GCC 4.6 was fixed.

The library's was filename has changed from libginac-1.5 to libginac. Compilation issues with clang and VC++ were fixed. Bugs were fixed in the substitution algorithm, in add:eval(), the GCD code, in symbol::get_name(), in is_polynomial(), in fsolve(), in power::eval(), and in unarchiving. The autogen dependencies were removed. The simplify_indexed() algorithm was improved. power::series() can handle now more expressions with singularities in the exponent. conjugate() methods were added to functions cosh, sinh, tanh.

The default behavior of conjugate() for user-defined functions was changed to avoid wrong evaluations. A user-defined conjugate_func must now be explicitly registered. The parser now handles abbreviations as advertised in the manual. Two bugs were fixed in the GCD code (one infinite loop, one miscalculation). Dangerous iterator use was fixed. A memory leak in excompiler was fixed. Several syntax issues with respect to gcc 4.5 and with respect to compile option -std=cxx0x were fixed. A wrong URL and a texinfo problem in the manual were fixed. The degree_vector() utility function was added.

This release fixes a bug in the GCD code (an infinite loop in pgcd())
and a bug in atan2() (a division by zero error for atan2(x,0) if
x is a negative and composite term). Products now correctly set
info_flags::negative and info_flags::negint.