Mercurial > cpython-lru_cache-weakref
diff Include/floatobject.h @ 46473:5bc7b20dc04a legacy-trunk
I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math.
The patch also adds acosh, asinh, atanh, log1p and copysign to all platforms. Finally it fixes differences between platforms like different results or exceptions for edge cases. Have fun :)
| author | Christian Heimes <christian@cheimes.de> |
|---|---|
| date | Fri, 18 Apr 2008 23:13:07 +0000 |
| parents | 8fdd6d62ea55 |
| children | a1997399f872 |
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--- a/Include/floatobject.h Fri Apr 18 20:45:33 2008 +0000 +++ b/Include/floatobject.h Fri Apr 18 23:13:07 2008 +0000 @@ -21,6 +21,17 @@ #define PyFloat_Check(op) PyObject_TypeCheck(op, &PyFloat_Type) #define PyFloat_CheckExact(op) (Py_TYPE(op) == &PyFloat_Type) +#ifdef Py_NAN +#define Py_RETURN_NAN PyFloat_FromDouble(Py_NAN) +#endif + +#define Py_RETURN_INF(sign) do \ + if (copysign(1., sign) == 1.) { \ + return PyFloat_FromDouble(Py_HUGE_VAL); \ + } else { \ + return PyFloat_FromDouble(-Py_HUGE_VAL); \ + } while(0) + PyAPI_FUNC(double) PyFloat_GetMax(void); PyAPI_FUNC(double) PyFloat_GetMin(void); PyAPI_FUNC(PyObject *) PyFloat_GetInfo(void);