[GiNaC-devel] [SCM] GiNaC -- a C++ library for symbolic computations branch, master, updated. release_1-4-0-250-gc0fcba1

[Richard B. Kreckel]

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- Log -----------------------------------------------------------------
commit c0fcba137d26486085ed5d4104b34d2c44978693
Author: Alexei Sheplyakov <alexei.sheplyakov at gmail.com>
Date:   Wed Jan 6 19:55:43 2010 +0200

    Use C style cast when converting void* into function pointer.
    
    Building GiNaC 1.5.5 with GCC 3.4 fails with the following error:
    
    libtool: compile:  ccache g++-3.4 -DHAVE_CONFIG_H -I. -I../../ginac -I../config -I/home/pc7135/varg/target/x86_64-linux-gnu/include -O2 -g -Wall -pipe -MT builtin_fcns.lo -MD -MP -MF .deps/builtin_fcns.Tpo -c ../../ginac/parser/builtin_fcns.cpp  -fPIC -DPIC -o .libs/builtin_fcns.o
    ../../ginac/parser/builtin_fcns.cpp: In function `GiNaC::ex (* GiNaC::encode_serial_as_reader_func(unsigned int))(const GiNaC::exvector&)':
    /home/pc7135/varg/tmp/build/GiNaC/build-linux-gcc-3.4/ginac/../../ginac/parser/builtin_fcns.cpp|67| error: ISO C++ forbids casting between pointer-to-function and pointer-to-object
    make[2]: *** [builtin_fcns.lo] Error 1
    
    The C++98 standard [expr.reinterpret.cast] does not allow
    
    reinterpret_cast<function_pointer>(void*)
    reinterpret_cast<void*>(function_pointer)
    
    But the ability to do so is important for a lot of practical uses. So soon
    after the C++98 standard was approved, a language defect report was filed
    on this topic, see
    http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#195
    The result is that compilers will be allowed to support reinterpret_cast
    conversions of function pointers to other (pointers) types, and vice a versa.
    Such conversions work with *current* compilers (GCC 4.x), but don't work
    with older ones, hence this patch.

commit 866b3eb23253a272788d8791b1ed023e63674d50
Author: Jens Vollinga <jensv at nikhef.nl>
Date:   Sun Aug 9 23:38:48 2009 +0200

    Added get_builtin_reader() that parses only the builtin GiNaC functions
    and pow, sqrt, and power.

commit 9177e7536ea82b739c72d3e41a319af7dbc15661
Author: Jens Vollinga <jensv at nikhef.nl>
Date:   Sun Aug 9 23:27:10 2009 +0200

    Fixed include of stdint.h (parser.cpp needs the header as well).

commit a6e5a7a5974dc95afe71c077f6a5e66b322c9d2c
Author: Alexei Sheplyakov <varg at metalica.kh.ua>
Date:   Sat Aug 8 11:43:12 2009 +0300

    Fix the compliation error *for real* ... and restore performance
    
    Commit 8bf0597dde55e4c94a2ff39f1d8130902e3d7a9b (titled as 'Fixed the parser
    such that it can read in user defined classes again.') made the parser a bit
    slower, especially if the input contains many terms of user-defined type.
    The reason for that is quite simple: we throw and catch an exception every
    time we construct an object of user-defined type:
    
           // dirty hack to distinguish between serial numbers of functions and real
           // pointers.
           GiNaC::function* f = NULL;
           try {
                   unsigned serial = (unsigned)(unsigned long)(void *)(reader->second);
                   f = new GiNaC::function(serial, args);
           }
           catch ( std::runtime_error ) {
                   if ( f ) delete f;
                   ex ret = reader->second(args);
                   return ret;
           }
    
    Fortunately functions are aligned and we can use much more efficient
    technique to distinguish between serial and pointers to functions.

commit ab6a9475aef3d8f97a1b520731ad528603946410
Author: Alexei Sheplyakov <varg at metalica.kh.ua>
Date:   Fri Aug 7 23:22:18 2009 +0300

    Fix the compliation error *for real*

commit 4b8098a96848d75490e04ba4746f67acb74daa9f
Author: Jens Vollinga <jensv at balin.nikhef.nl>
Date:   Fri Jul 31 17:54:16 2009 +0200

    Fixed memory leak.

commit 94ead6345f31939c9c9eff70ce88d74cf36a8004
Author: Jens Vollinga <jensv at balin.nikhef.nl>
Date:   Fri Jul 31 15:29:17 2009 +0200

    Fixed the fix in commit f059ebe117d15292e0d262e6e8e232e835c7e33c.

commit c4da34c70ce1b9e3803317ebfe48b162cf9d3408
Author: Jens Vollinga <jensv at balin.nikhef.nl>
Date:   Fri Jul 31 14:41:08 2009 +0200

    Fixed dirty hack in parser to distinguish between serial numbers and pointers.

commit e56d94889fcfb729ad15d5088d5db3e9409bb6a4
Author: Jens Vollinga <jensv at balin.nikhef.nl>
Date:   Fri Jul 31 12:48:58 2009 +0200

    Fixed the parser such that it can read in user defined classes again.
    Fixed default reader to parse also pow, sqrt and power.

commit adb222a4d30fade5b53e94e2750b8c0ba83e90b6
Author: Jens Vollinga <jensv at balin.nikhef.nl>
Date:   Fri Jul 31 11:14:01 2009 +0200

    Fixed cast that caused compile error on 64bit machines.

commit d6ab150eb3016ddb416f0533606ae3a393003e9e
Author: Jens Vollinga <jensv at nikhef.nl>
Date:   Wed Jul 15 08:26:33 2009 +0200

    Allow user defined functions to be parsed.
    
    This patch is an ugly hack that does the same as the commit
    f38cbcd651246fb5c1294705d29399f3cbfddaf5
    but without changing the ABI (so it can be used in ginac_1-5).

commit 3aec0ba298693329c1194e547043fef1a78b1b0d
Author: Alexei Sheplyakov <Alexei.Sheplyakov at gmail.com>
Date:   Thu Dec 9 20:42:50 2010 +0200

    Revert "Changed the parser such that it understands all defined functions"
    
    This reverts commit f38cbcd651246fb5c1294705d29399f3cbfddaf5, which
    broke parsing user-defined classes.

-----------------------------------------------------------------------

Summary of changes:
 INSTALL                         |    3 +-
 configure.ac                    |    4 +
 ginac/Makefile.am               |   18 +++++-
 ginac/function.pl               |    8 ++-
 ginac/parser/builtin_fcns.def   |   14 ++++
 ginac/parser/default_reader.tpl |  145 +++++++++++++++++++++++++++++++++++++++
 ginac/parser/parse_context.cpp  |   20 ------
 ginac/parser/parse_context.h    |   32 +++++++--
 ginac/parser/parser.cpp         |   42 +++++++++++-
 9 files changed, 253 insertions(+), 33 deletions(-)
 create mode 100644 ginac/parser/builtin_fcns.def
 create mode 100644 ginac/parser/default_reader.tpl


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