def zeros(r, c=None, cls=None):
"""Returns a matrix of zeros with ``r`` rows and ``c`` columns;
if ``c`` is omitted a square matrix will be returned.
See Also
========
ones
eye
diag
"""
if cls is None:
from dense import Matrix as cls
if is_sequence(r):
SymPyDeprecationWarning(
feature="The syntax zeros([%i, %i])" % tuple(r),
useinstead="zeros(%i, %i)." % tuple(r),
issue=3381, deprecated_since_version="0.7.2",
).warn()
r, c = r
else:
c = r if c is None else c
r, c = [int(i) for i in [r, c]]
return cls.zeros(r, c)
