c_lib.pyx

r"""
Interface between Python and c_lib.

This allows Python code to access a few parts of c_lib.  This is not
needed for Cython code, since such code can access c_lib directly.


AUTHORS:

- Jeroen Demeyer (2010-10-13): initial version

"""
#*****************************************************************************
#       Copyright (C) 2011 Jeroen Demeyer <[email protected]>
#
#  Distributed under the terms of the GNU General Public License (GPL)
#  as published by the Free Software Foundation; either version 2 of
#  the License, or (at your option) any later version.
#                  http://www.gnu.org/licenses/
#*****************************************************************************

include '../ext/stdsage.pxi'
include '../ext/interrupt.pxi'

def _init_csage():
    """
    Call init_csage().

    This is normally done exactly once during Sage startup from
    sage/all.py
    """
    init_csage()


def sig_on_count():
    """
    Return _signals.sig_on_count.

    This is normally zero, but increased by every sig_on() or sig_str()
    and decreased by every sig_off(). In pure Python code, this should
    always be zero.

    EXAMPLES::

        sage: sig_on_count()
        0
    """
    return _signals.sig_on_count