Initialisation du repository de Beta

venv/lib/python3.12/site-packages/sympy/printing/tests/test_cupy.py

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