PyFloat_FromDouble should take a float64

[zjb0807]

// PyObject* PyFloat_FromDouble(double v) // Return value: New reference. // Create a PyFloatObject object from v, or NULL on failure. func PyFloat_FromDouble(v float32) *PyObject { return togo(C.PyFloat_FromDouble(C.double(v))) }

[zjb0807]

another problem, when i use PyFloat_AsDouble function: err: cannot use python.PyFloat_AsDouble(rate) (type float64) as type float32 in assignment

[sbinet]

python.PyFloat_AsDouble now returns a float64. either change the type of the value being assigned to (from float32 to float64) or convert what python.PyFloat_AsDouble returns to a float32.