Issue #23185: add math.inf and math.nan constants.
diff --git a/Modules/mathmodule.c b/Modules/mathmodule.c
index bce3799..0c991cd 100644
--- a/Modules/mathmodule.c
+++ b/Modules/mathmodule.c
@@ -223,6 +223,35 @@
return num/den;
}
+/* Constant for +infinity, generated in the same way as float('inf'). */
+
+static double
+m_inf(void)
+{
+#ifndef PY_NO_SHORT_FLOAT_REPR
+ return _Py_dg_infinity(0);
+#else
+ return Py_HUGE_VAL;
+#endif
+}
+
+/* Constant nan value, generated in the same way as float('nan'). */
+/* We don't currently assume that Py_NAN is defined everywhere. */
+
+#if !defined(PY_NO_SHORT_FLOAT_REPR) || defined(Py_NAN)
+
+static double
+m_nan(void)
+{
+#ifndef PY_NO_SHORT_FLOAT_REPR
+ return _Py_dg_stdnan(0);
+#else
+ return Py_NAN;
+#endif
+}
+
+#endif
+
static double
m_tgamma(double x)
{
@@ -2009,7 +2038,11 @@
PyModule_AddObject(m, "pi", PyFloat_FromDouble(Py_MATH_PI));
PyModule_AddObject(m, "e", PyFloat_FromDouble(Py_MATH_E));
+ PyModule_AddObject(m, "inf", PyFloat_FromDouble(m_inf()));
+#if !defined(PY_NO_SHORT_FLOAT_REPR) || defined(Py_NAN)
+ PyModule_AddObject(m, "nan", PyFloat_FromDouble(m_nan()));
+#endif
- finally:
+ finally:
return m;
}