56 lines
1.8 KiB
Python
56 lines
1.8 KiB
Python
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from sympy.concrete.summations import Sum
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from sympy.functions.elementary.exponential import log
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from sympy.functions.elementary.miscellaneous import sqrt
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from sympy.utilities.lambdify import lambdify
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from sympy.abc import x, i, a, b
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from sympy.codegen.numpy_nodes import logaddexp
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from sympy.printing.numpy import CuPyPrinter, _cupy_known_constants, _cupy_known_functions
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from sympy.testing.pytest import skip
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from sympy.external import import_module
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cp = import_module('cupy')
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def test_cupy_print():
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prntr = CuPyPrinter()
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assert prntr.doprint(logaddexp(a, b)) == 'cupy.logaddexp(a, b)'
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assert prntr.doprint(sqrt(x)) == 'cupy.sqrt(x)'
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assert prntr.doprint(log(x)) == 'cupy.log(x)'
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assert prntr.doprint("acos(x)") == 'cupy.arccos(x)'
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assert prntr.doprint("exp(x)") == 'cupy.exp(x)'
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assert prntr.doprint("Abs(x)") == 'abs(x)'
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def test_not_cupy_print():
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prntr = CuPyPrinter()
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assert "Not supported" in prntr.doprint("abcd(x)")
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def test_cupy_sum():
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if not cp:
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skip("CuPy not installed")
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s = Sum(x ** i, (i, a, b))
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f = lambdify((a, b, x), s, 'cupy')
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a_, b_ = 0, 10
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x_ = cp.linspace(-1, +1, 10)
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assert cp.allclose(f(a_, b_, x_), sum(x_ ** i_ for i_ in range(a_, b_ + 1)))
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s = Sum(i * x, (i, a, b))
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f = lambdify((a, b, x), s, 'numpy')
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a_, b_ = 0, 10
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x_ = cp.linspace(-1, +1, 10)
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assert cp.allclose(f(a_, b_, x_), sum(i_ * x_ for i_ in range(a_, b_ + 1)))
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def test_cupy_known_funcs_consts():
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assert _cupy_known_constants['NaN'] == 'cupy.nan'
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assert _cupy_known_constants['EulerGamma'] == 'cupy.euler_gamma'
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assert _cupy_known_functions['acos'] == 'cupy.arccos'
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assert _cupy_known_functions['log'] == 'cupy.log'
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def test_cupy_print_methods():
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prntr = CuPyPrinter()
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assert hasattr(prntr, '_print_acos')
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assert hasattr(prntr, '_print_log')
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