cpython/Modules/_testcapi/float.c

117 lines
2.5 KiB
C

// clinic/float.c.h uses internal pycore_modsupport.h API
#define PYTESTCAPI_NEED_INTERNAL_API
#include "parts.h"
#include "util.h"
#include "clinic/float.c.h"
/*[clinic input]
module _testcapi
[clinic start generated code]*/
/*[clinic end generated code: output=da39a3ee5e6b4b0d input=6361033e795369fc]*/
/*[clinic input]
_testcapi.float_pack
size: int
d: double
le: int
/
Test PyFloat_Pack2(), PyFloat_Pack4() and PyFloat_Pack8()
[clinic start generated code]*/
static PyObject *
_testcapi_float_pack_impl(PyObject *module, int size, double d, int le)
/*[clinic end generated code: output=7899bd98f8b6cb04 input=52c9115121999c98]*/
{
switch (size)
{
case 2:
{
char data[2];
if (PyFloat_Pack2(d, data, le) < 0) {
return NULL;
}
return PyBytes_FromStringAndSize(data, Py_ARRAY_LENGTH(data));
}
case 4:
{
char data[4];
if (PyFloat_Pack4(d, data, le) < 0) {
return NULL;
}
return PyBytes_FromStringAndSize(data, Py_ARRAY_LENGTH(data));
}
case 8:
{
char data[8];
if (PyFloat_Pack8(d, data, le) < 0) {
return NULL;
}
return PyBytes_FromStringAndSize(data, Py_ARRAY_LENGTH(data));
}
default: break;
}
PyErr_SetString(PyExc_ValueError, "size must 2, 4 or 8");
return NULL;
}
/*[clinic input]
_testcapi.float_unpack
data: str(accept={robuffer}, zeroes=True)
le: int
/
Test PyFloat_Unpack2(), PyFloat_Unpack4() and PyFloat_Unpack8()
[clinic start generated code]*/
static PyObject *
_testcapi_float_unpack_impl(PyObject *module, const char *data,
Py_ssize_t data_length, int le)
/*[clinic end generated code: output=617059f889ddbfe4 input=c095e4bb75a696cd]*/
{
assert(!PyErr_Occurred());
double d;
switch (data_length)
{
case 2:
d = PyFloat_Unpack2(data, le);
break;
case 4:
d = PyFloat_Unpack4(data, le);
break;
case 8:
d = PyFloat_Unpack8(data, le);
break;
default:
PyErr_SetString(PyExc_ValueError, "data length must 2, 4 or 8 bytes");
return NULL;
}
if (d == -1.0 && PyErr_Occurred()) {
return NULL;
}
return PyFloat_FromDouble(d);
}
static PyMethodDef test_methods[] = {
_TESTCAPI_FLOAT_PACK_METHODDEF
_TESTCAPI_FLOAT_UNPACK_METHODDEF
{NULL},
};
int
_PyTestCapi_Init_Float(PyObject *mod)
{
if (PyModule_AddFunctions(mod, test_methods) < 0) {
return -1;
}
return 0;
}