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use std::os::raw::c_double;
use ffi;
use object::PyObject;
use python::{ToPyPointer, Python};
use err::PyErr;
use instance::{Py, PyObjectWithToken};
use conversion::{ToPyObject, IntoPyObject};
pub struct PyFloat(PyObject);
pyobject_convert!(PyFloat);
pyobject_nativetype!(PyFloat, PyFloat_Type, PyFloat_Check);
impl PyFloat {
pub fn new(_py: Python, val: c_double) -> Py<PyFloat> {
unsafe {
Py::from_owned_ptr_or_panic(ffi::PyFloat_FromDouble(val))
}
}
pub fn value(&self) -> c_double {
unsafe { ffi::PyFloat_AsDouble(self.0.as_ptr()) }
}
}
impl ToPyObject for f64 {
fn to_object(&self, py: Python) -> PyObject {
PyFloat::new(py, *self).into()
}
}
impl IntoPyObject for f64 {
fn into_object(self, py: Python) -> PyObject {
PyFloat::new(py, self).into()
}
}
pyobject_extract!(obj to f64 => {
let v = unsafe { ffi::PyFloat_AsDouble(obj.as_ptr()) };
#[cfg_attr(feature = "cargo-clippy", allow(float_cmp))]
{
if v == -1.0 && PyErr::occurred(obj.py()) {
Err(PyErr::fetch(obj.py()))
} else {
Ok(v)
}
}
});
impl ToPyObject for f32 {
#[cfg_attr(feature = "cargo-clippy", allow(cast_lossless))]
fn to_object(&self, py: Python) -> PyObject {
PyFloat::new(py, *self as f64).into()
}
}
impl IntoPyObject for f32 {
#[cfg_attr(feature = "cargo-clippy", allow(cast_lossless))]
fn into_object(self, py: Python) -> PyObject {
PyFloat::new(py, self as f64).into()
}
}
pyobject_extract!(obj to f32 => {
Ok(obj.extract::<f64>()? as f32)
});
#[cfg(test)]
mod test {
use python::Python;
use conversion::ToPyObject;
macro_rules! num_to_py_object_and_back (
($func_name:ident, $t1:ty, $t2:ty) => (
#[test]
fn $func_name() {
let gil = Python::acquire_gil();
let py = gil.python();
let val = 123 as $t1;
let obj = val.to_object(py);
assert_eq!(obj.extract::<$t2>(py).unwrap(), val as $t2);
}
)
);
num_to_py_object_and_back!(to_from_f64, f64, f64);
num_to_py_object_and_back!(to_from_f32, f32, f32);
num_to_py_object_and_back!(int_to_float, i32, f64);
}