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Issue #13889: Add missing _Py_SET_53BIT_PRECISION_* calls around uses of dtoa.c functions in float round.

This commit is contained in:
Mark Dickinson 2012-01-27 21:16:01 +00:00
parent 7a556846d4
commit 1abe6cd842
1 changed files with 5 additions and 0 deletions
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5
Objects/floatobject.c
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@ -1086,6 +1086,7 @@ _Py_double_round(double x, int ndigits) {
char *buf, *buf_end, shortbuf[100], *mybuf=shortbuf;
int decpt, sign, val, halfway_case;
PyObject *result = NULL;
_Py_SET_53BIT_PRECISION_HEADER;
/* The basic idea is very simple: convert and round the double to a
decimal string using _Py_dg_dtoa, then convert that decimal string
@ -1142,7 +1143,9 @@ _Py_double_round(double x, int ndigits) {
halfway_case = 0;
/* round to a decimal string; use an extra place for halfway case */
_Py_SET_53BIT_PRECISION_START;
buf = _Py_dg_dtoa(x, 3, ndigits+halfway_case, &decpt, &sign, &buf_end);
_Py_SET_53BIT_PRECISION_END;
if (buf == NULL) {
PyErr_NoMemory();
return NULL;
@ -1186,7 +1189,9 @@ _Py_double_round(double x, int ndigits) {
/* and convert the resulting string back to a double */
errno = 0;
_Py_SET_53BIT_PRECISION_START;
rounded = _Py_dg_strtod(mybuf, NULL);
_Py_SET_53BIT_PRECISION_END;
if (errno == ERANGE && fabs(rounded) >= 1.)
PyErr_SetString(PyExc_OverflowError,
"rounded value too large to represent");