diff options
Diffstat (limited to 'Modules/mathmodule.c')
| -rw-r--r-- | Modules/mathmodule.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/Modules/mathmodule.c b/Modules/mathmodule.c index 7f9372a..152788f 100644 --- a/Modules/mathmodule.c +++ b/Modules/mathmodule.c @@ -1818,6 +1818,19 @@ PyDoc_STRVAR(math_radians_doc, Convert angle x from degrees to radians."); static PyObject * +math_isfinite(PyObject *self, PyObject *arg) +{ + double x = PyFloat_AsDouble(arg); + if (x == -1.0 && PyErr_Occurred()) + return NULL; + return PyBool_FromLong((long)Py_IS_FINITE(x)); +} + +PyDoc_STRVAR(math_isfinite_doc, +"isfinite(x) -> bool\n\n\ +Check if float x is finite (not an infinity or NaN)."); + +static PyObject * math_isnan(PyObject *self, PyObject *arg) { double x = PyFloat_AsDouble(arg); @@ -1868,6 +1881,7 @@ static PyMethodDef math_methods[] = { {"fsum", math_fsum, METH_O, math_fsum_doc}, {"gamma", math_gamma, METH_O, math_gamma_doc}, {"hypot", math_hypot, METH_VARARGS, math_hypot_doc}, + {"isfinite", math_isfinite, METH_O, math_isfinite_doc}, {"isinf", math_isinf, METH_O, math_isinf_doc}, {"isnan", math_isnan, METH_O, math_isnan_doc}, {"ldexp", math_ldexp, METH_VARARGS, math_ldexp_doc}, |