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Marius Gerbershagen 3afa3e1a42 ieee_fp: move fetestexcept checks directly after floating point calculations 
The C standard allows compilers to ignore side effects of floating
point operations unless the STDC FENV_ACCESS pragma is in effect. This
could lead to spurious floating point exceptions being signaled
because the C compiler optimized a calculation that would ordinarily
not set fpe bits to one that did (observed with clang for a cast
double to cl_fixnum).

To solve this, we resurrect the ECL_MATHERR macro which was removed in
commit cb03494a6d. We handle fpe bits
only around calculations which are known to be "unsafe" in the sense
that they can produce floating point exceptions. Before the
calculation, all bits are unset and afterwards, we test for
exceptions.

The disadvantage of this method is that optimizations by the C
compiler resulting in unboxed float arithmetic might lead to
missing exceptions, because our native C compiler does not insert
ECL_MATHERR statements around these calculations.
2020-02-16 22:32:37 +01:00
contrib sockets: fix GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS 2020-01-25 17:43:30 +01:00
examples examples: add cmake example 2018-08-17 10:45:02 +02:00
msvc bignums: don't use ecl_alloc_atomic for gmp 2020-01-04 17:49:08 +01:00
src ieee_fp: move fetestexcept checks directly after floating point calculations 2020-02-16 22:32:37 +01:00
.gitignore add msvc/package-locks.asd to .gitignore 2019-03-19 12:52:48 +08:00
.gitlab-ci.yml Add .gitlab-ci.yml 2017-01-11 18:30:33 +00:00
appveyor.yml Add simple appveyor msvc build 2017-05-13 00:12:13 +02:00
CHANGELOG ffi: Update libffi to version 3.3 2019-12-09 19:49:30 +01:00
configure Preserve quoting when passing the arguments to the build directory 2008-08-27 09:50:44 +02:00
COPYING cosmetic: rename LGPL->COPYING 2016-10-08 14:24:31 +02:00
INSTALL update CHANGELOG, INSTALL and cross config for iOS 2019-12-08 10:26:52 +01:00
LICENSE copyright: add Marius to the maintainer list. 2019-02-22 18:43:37 +00:00
Makefile.in doc: set new doc as standard documentation 2019-01-03 19:14:28 +01:00
README.md update readme (typos) 2015-08-31 08:22:52 +00:00

README.md

ECL stands for Embeddable Common-Lisp. The ECL project aims to produce an implementation of the Common-Lisp language which complies to the ANSI X3J13 definition of the language.

The term embeddable refers to the fact that ECL includes a Lisp to C compiler, which produces libraries (static or dynamic) that can be called from C programs. Furthermore, ECL can produce standalone executables from Lisp code and can itself be linked to your programs as a shared library. It also features an interpreter for situations when a C compiler isn't available.

ECL supports the operating systems Linux, FreeBSD, NetBSD, DragonFly BSD, OpenBSD, Solaris (at least v. 9), Microsoft Windows (MSVC, MinGW and Cygwin) and OSX, running on top of the Intel, Sparc, Alpha, ARM and PowerPC processors. Porting to other architectures should be rather easy.