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Issue #9742: Sneaky fix for build failure on Solaris 9.

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This commit is contained in:
Mark Dickinson 2012-11-17 20:18:52 +00:00
parent e3ae321222
commit 115bc79df8
1 changed files with 9 additions and 0 deletions
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9
Objects/floatobject.c
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@ -1088,6 +1088,15 @@ _Py_double_round(double x, int ndigits) {
PyObject *result = NULL; PyObject *result = NULL;
_Py_SET_53BIT_PRECISION_HEADER; _Py_SET_53BIT_PRECISION_HEADER;
/* Easy path for the common case ndigits == 0. */
if (ndigits == 0) {
rounded = round(x);
if (fabs(rounded - x) == 0.5)
/* halfway between two integers; use round-away-from-zero */
rounded = x + (x > 0.0 ? 0.5 : -0.5);
return PyFloat_FromDouble(rounded);
}
/* The basic idea is very simple: convert and round the double to a /* The basic idea is very simple: convert and round the double to a
decimal string using _Py_dg_dtoa, then convert that decimal string decimal string using _Py_dg_dtoa, then convert that decimal string
back to a double with _Py_dg_strtod. There's one minor difficulty: back to a double with _Py_dg_strtod. There's one minor difficulty: