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authorJohn Belmonte <john@neggie.net>2022-04-11 14:34:18 (GMT)
committerGitHub <noreply@github.com>2022-04-11 14:34:18 (GMT)
commitb0b836b20cb56c225874a4a39ef895f89ab2970f (patch)
treeb333cd2e9ee95021e1fc3b45eee2da0b7ac0ee35 /Objects/unicodeobject.c
parentdd207a6ac52d4bd9a71cf178fc1d5c17a6f07aff (diff)
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bpo-45995: add "z" format specifer to coerce negative 0 to zero (GH-30049)
Add "z" format specifier to coerce negative 0 to zero. See https://github.com/python/cpython/issues/90153 (originally https://bugs.python.org/issue45995) for discussion. This covers `str.format()` and f-strings. Old-style string interpolation is not supported. Co-authored-by: Mark Dickinson <dickinsm@gmail.com>
Diffstat (limited to 'Objects/unicodeobject.c')
-rw-r--r--Objects/unicodeobject.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index 1b2f332..c665f57 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -14372,7 +14372,7 @@ formatfloat(PyObject *v, struct unicode_format_arg_t *arg,
double x;
Py_ssize_t len;
int prec;
- int dtoa_flags;
+ int dtoa_flags = 0;
x = PyFloat_AsDouble(v);
if (x == -1.0 && PyErr_Occurred())
@@ -14383,9 +14383,9 @@ formatfloat(PyObject *v, struct unicode_format_arg_t *arg,
prec = 6;
if (arg->flags & F_ALT)
- dtoa_flags = Py_DTSF_ALT;
- else
- dtoa_flags = 0;
+ dtoa_flags |= Py_DTSF_ALT;
+ if (arg->flags & F_NO_NEG_0)
+ dtoa_flags |= Py_DTSF_NO_NEG_0;
p = PyOS_double_to_string(x, arg->ch, prec, dtoa_flags, NULL);
if (p == NULL)
return -1;