/usr/lib/python2.7/dist-packages/dolfin/common/math.py is in python-dolfin 1.3.0+dfsg-2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | """Convenience functions that are useful in subdomains and expressions. Matches
some of the functions in dolfin/math/basic.h."""
__all__ = ["sqr"]
from constants import DOLFIN_EPS
# The cpp version of these functions are about 3 times faster
#def between(x0, x, x1):
# """Returns true if x0-epsilon < x < x1+epsilon"""
# return x0-DOLFIN_EPS < x < x1+DOLFIN_EPS
#
#def near(x, x0):
# """Returns true if x0-epsilon < x < x0+epsilon"""
# return x0-DOLFIN_EPS < x < x0+DOLFIN_EPS
def sqr(x):
return x*x
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