def _print_sign(self, expr):
from sympy import Abs
arg, = expr.args
if arg.is_integer:
new_expr = merge(0, isign(1, arg), Eq(arg, 0))
elif arg.is_complex:
new_expr = merge(cmplx(literal_dp(0), literal_dp(0)), arg/Abs(arg), Eq(Abs(arg), literal_dp(0)))
else:
new_expr = merge(literal_dp(0), dsign(literal_dp(1), arg), Eq(arg, literal_dp(0)))
return self._print(new_expr)
def _print_sign(self, expr):
from sympy.functions.elementary.complexes import Abs
arg, = expr.args
if arg.is_integer:
new_expr = merge(0, isign(1, arg), Eq(arg, 0))
elif (arg.is_complex or arg.is_infinite):
new_expr = merge(cmplx(literal_dp(0), literal_dp(0)),
arg / Abs(arg), Eq(Abs(arg), literal_dp(0)))
else:
new_expr = merge(literal_dp(0), dsign(literal_dp(1), arg),
Eq(arg, literal_dp(0)))
return self._print(new_expr)
def test_dsign():
x = Symbol('x')
assert unchanged(dsign, 1, x)
assert fcode(dsign(literal_dp(1), x), standard=95,
source_format='free') == 'dsign(1d0, x)'
def test_dsign():
x = Symbol("x")
assert unchanged(dsign, 1, x)
assert (fcode(dsign(literal_dp(1), x), standard=95,
source_format="free") == "dsign(1d0, x)")
def test_dsign():
x = Symbol('x')
assert dsign(1, x) == dsign(1, x)
assert fcode(dsign(literal_dp(1), x), standard=95, source_format='free') == 'dsign(1d0, x)'
