mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-10-06 23:21:06 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 10

bpo-46852: Remove the float.__set_format__() method (GH-31585)

Browse source 
Remove the undocumented private float.__set_format__() method,
previously known as float.__set_format__() in Python 3.7. Its
docstring said: "You probably don't want to use this function. It
exists mainly to be used in Python's test suite."
This commit is contained in:
Victor Stinner 2022-02-26 00:53:27 +01:00 • committed by GitHub
parent 4060111f9d
commit 5ab745fc51
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
7 changed files with 15 additions and 214 deletions
Download patch file Download diff file Expand all files Collapse all files

76
Objects/floatobject.c
View file

@ -1708,7 +1708,6 @@ typedef enum {
} float_format_type;
static float_format_type double_format, float_format;
static float_format_type detected_double_format, detected_float_format;
/*[clinic input]
@classmethod
@ -1760,78 +1759,6 @@ float___getformat___impl(PyTypeObject *type, const char *typestr)
}
}
/*[clinic input]
@classmethod
float.__setformat__
typestr: str
Must be 'double' or 'float'.
fmt: str
Must be one of 'unknown', 'IEEE, big-endian' or 'IEEE, little-endian',
and in addition can only be one of the latter two if it appears to
match the underlying C reality.
/
You probably don't want to use this function.
It exists mainly to be used in Python's test suite.
Override the automatic determination of C-level floating point type.
This affects how floats are converted to and from binary strings.
[clinic start generated code]*/
static PyObject *
float___setformat___impl(PyTypeObject *type, const char *typestr,
const char *fmt)
/*[clinic end generated code: output=06864de1fb5f1f04 input=c0e9e04dd87f9988]*/
{
float_format_type f;
float_format_type detected;
float_format_type *p;
if (strcmp(typestr, "double") == 0) {
p = &double_format;
detected = detected_double_format;
}
else if (strcmp(typestr, "float") == 0) {
p = &float_format;
detected = detected_float_format;
}
else {
PyErr_SetString(PyExc_ValueError,
"__setformat__() argument 1 must "
"be 'double' or 'float'");
return NULL;
}
if (strcmp(fmt, "unknown") == 0) {
f = unknown_format;
}
else if (strcmp(fmt, "IEEE, little-endian") == 0) {
f = ieee_little_endian_format;
}
else if (strcmp(fmt, "IEEE, big-endian") == 0) {
f = ieee_big_endian_format;
}
else {
PyErr_SetString(PyExc_ValueError,
"__setformat__() argument 2 must be "
"'unknown', 'IEEE, little-endian' or "
"'IEEE, big-endian'");
return NULL;
}
if (f != unknown_format && f != detected) {
PyErr_Format(PyExc_ValueError,
"can only set %s format to 'unknown' or the "
"detected platform value", typestr);
return NULL;
}
*p = f;
Py_RETURN_NONE;
}
static PyObject *
float_getreal(PyObject *v, void *closure)
@ -1885,7 +1812,6 @@ static PyMethodDef float_methods[] = {
FLOAT_IS_INTEGER_METHODDEF
FLOAT___GETNEWARGS___METHODDEF
FLOAT___GETFORMAT___METHODDEF
FLOAT___SETFORMAT___METHODDEF
FLOAT___FORMAT___METHODDEF
{NULL, NULL} /* sentinel */
};
@ -1989,6 +1915,8 @@ _PyFloat_InitState(PyInterpreterState *interp)
return;
}
float_format_type detected_double_format, detected_float_format;
/* We attempt to determine if this machine is using IEEE
floating point formats by peering at the bits of some
carefully chosen values. If it looks like we are on an