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Python bindings for CRlibm, an efficient and proven correctly-rounded mathematical library
Readme
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Python bindings for CRlibm <http://lipforge.ens-lyon.fr/www/crlibm>
_, an efficient and proven
correctly-rounded mathematical library.
CRlibm is a free mathematical library (libm) which provides:
implementations of the double-precision C99 standard elementary functions,
correctly rounded in the four IEEE-754 rounding modes,
with a comprehensive proof of both the algorithms used and their implementation,
sufficiently efficient in average time, worst-case time, and memory consumption to replace existing libms transparently.
At the command line::
$ pip install crlibm
On Microsoft Windows pip
will try first to download a binary
archive in wheel format, and if no such a wheel can be found for
your Python version, pip
will try to compile the library. In
order to do so, it is strongly recommended to have MinGW-w64 <http://mingw-w64.org>
_ installed under MSYS2 <https://msys2.github.io>
, for instance by following the
instructions in <http://stackoverflow.com/a/30071634>
.
In Python::
>>> import crlibm
>>> crlibm.exp_ru(1)
2.7182818284590455
>>> crlibm.exp_rd(1)
2.718281828459045
+----------------+------------------+------------------+--------------------+------------+ | f(x) | Round to nearest | Round up (to +∞) | Round down (to -∞) | Round to 0 | +----------------+------------------+------------------+--------------------+------------+ | Exponentials and logarithms | +----------------+------------------+------------------+--------------------+------------+ | exp(x) | exp_rn | exp_ru | exp_rd | exp_rz | +----------------+------------------+------------------+--------------------+------------+ | exp(x)-1 | expm1_rn | expm1_ru | expm1_rd | expm1_rz | +----------------+------------------+------------------+--------------------+------------+ | log(x) | log_rn | log_ru | log_rd | log_rz | +----------------+------------------+------------------+--------------------+------------+ | log(1+x) | log1p_rn | log1p_ru | log1p_rd | log1p_rz | +----------------+------------------+------------------+--------------------+------------+ | log(x)/log(2) | log2_rn | log2_ru | log2_rd | log2_rz | +----------------+------------------+------------------+--------------------+------------+ | log(x)/log(10) | log10_rn | log10_ru | log10_rd | log10_rz | +----------------+------------------+------------------+--------------------+------------+ | sinh(x) | sinh_rn | sinh_ru | sinh_rd | sinh_rz | +----------------+------------------+------------------+--------------------+------------+ | cosh(x) | cosh_rn | cosh_ru | cosh_rd | cosh_rz | +----------------+------------------+------------------+--------------------+------------+ | Trigonometry | +----------------+------------------+------------------+--------------------+------------+ | sin(x) | sin_rn | sin_ru | sin_rd | sin_rz | +----------------+------------------+------------------+--------------------+------------+ | cos(x) | cos_rn | cos_ru | cos_rd | cos_rz | +----------------+------------------+------------------+--------------------+------------+ | tan(x) | tan_rn | tan_ru | tan_rd | tan_rz | +----------------+------------------+------------------+--------------------+------------+ | asin(x) | asin_rn | asin_ru | asin_rd | asin_rz | +----------------+------------------+------------------+--------------------+------------+ | acos(x) | acos_rn | acos_ru | acos_rd | acos_rz | +----------------+------------------+------------------+--------------------+------------+ | atan(x) | atan_rn | atan_ru | atan_rd | atan_rz | +----------------+------------------+------------------+--------------------+------------+ | Trigonometry in multiples of π | +----------------+------------------+------------------+--------------------+------------+ | sin(π * x) | sinpi_rn | sinpi_ru | sinpi_rd | sinpi_rz | +----------------+------------------+------------------+--------------------+------------+ | cos(π * x) | cospi_rn | cospi_ru | cospi_rd | cospi_rz | +----------------+------------------+------------------+--------------------+------------+ | tan(π * x) | tanpi_rn | tanpi_ru | tanpi_rd | tanpi_rz | +----------------+------------------+------------------+--------------------+------------+ | asin(x)/π | asinpi_rn | asinpi_ru | asinpi_rd | asinpi_rz | +----------------+------------------+------------------+--------------------+------------+ | acos(x)/π | acospi_rn | acospi_ru | acospi_rd | acospi_rz | +----------------+------------------+------------------+--------------------+------------+ | atan(x)/π | atanpi_rn | atanpi_ru | atanpi_rd | atanpi_rz | +----------------+------------------+------------------+--------------------+------------+
pow
in CRlibm is not exported.Both the CRlibm library and the Python bindings are distributed under
the GNU Lesser General Public License as published by the Free
Software Foundation; either version 2.1 <http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html>
_ of the
License, or (at your option) any later version.
David Defour, Catherine Daramy, Florent de Dinechin, Matthieu Gallet, Nicolas Gast, Christoph Lauter, Jean-Michel Muller.
Python bindings by Stefano Taschini.
1.0.3 (2016-06-09) ^^^^^^^^^^^^^^^^^^
1.0.2 (2016-06-06) ^^^^^^^^^^^^^^^^^^
1.0.1 (2015-11-15) ^^^^^^^^^^^^^^^^^^
1.0.0 (2015-10-27) ^^^^^^^^^^^^^^^^^^
PyInterval <https://github.com/taschini/pyinterval>
_, a project for interval
arithmetic in Python.FAQs
Python bindings for CRlibm, an efficient and proven correctly-rounded mathematical library
We found that crlibm demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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