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Issue #9165: Add math.isfinite and cmath.isfinite.

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This commit is contained in:
Mark Dickinson 2010-07-11 17:38:24 +00:00
parent 3e7428995f
commit 8e0c996873
7 changed files with 61 additions and 0 deletions
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14
Modules/cmathmodule.c
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@ -1023,6 +1023,19 @@ PyDoc_STRVAR(cmath_rect_doc,
"rect(r, phi) -> z: complex\n\n\
Convert from polar coordinates to rectangular coordinates.");
static PyObject *
cmath_isfinite(PyObject *self, PyObject *args)
{
Py_complex z;
if (!PyArg_ParseTuple(args, "D:isfinite", &z))
return NULL;
return PyBool_FromLong(Py_IS_FINITE(z.real) && Py_IS_FINITE(z.imag));
}
PyDoc_STRVAR(cmath_isfinite_doc,
"isfinite(z) -> bool\n\
Return True if both the real and imaginary parts of z are finite, else False.");
static PyObject *
cmath_isnan(PyObject *self, PyObject *args)
{
@ -1065,6 +1078,7 @@ static PyMethodDef cmath_methods[] = {
{"cos", cmath_cos, METH_VARARGS, c_cos_doc},
{"cosh", cmath_cosh, METH_VARARGS, c_cosh_doc},
{"exp", cmath_exp, METH_VARARGS, c_exp_doc},
{"isfinite", cmath_isfinite, METH_VARARGS, cmath_isfinite_doc},
{"isinf", cmath_isinf, METH_VARARGS, cmath_isinf_doc},
{"isnan", cmath_isnan, METH_VARARGS, cmath_isnan_doc},
{"log", cmath_log, METH_VARARGS, cmath_log_doc},