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FreeBSD doesn't follow C99 for modf(inf); so add explicit 

special-value handling to math.modf code.
This commit is contained in:
Mark Dickinson 2008-04-20 01:39:24 +00:00
parent 9f99d70513
commit b2f7090239
1 changed files with 9 additions and 0 deletions
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9
Modules/mathmodule.c
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@ -341,6 +341,15 @@ math_modf(PyObject *self, PyObject *arg)
double y, x = PyFloat_AsDouble(arg); double y, x = PyFloat_AsDouble(arg);
if (x == -1.0 && PyErr_Occurred()) if (x == -1.0 && PyErr_Occurred())
return NULL; return NULL;
/* some platforms don't do the right thing for NaNs and
infinities, so we take care of special cases directly. */
if (!Py_IS_FINITE(x)) {
if (Py_IS_INFINITY(x))
return Py_BuildValue("(dd)", copysign(0., x), x);
else if (Py_IS_NAN(x))
return Py_BuildValue("(dd)", x, x);
}
errno = 0; errno = 0;
PyFPE_START_PROTECT("in math_modf", return 0); PyFPE_START_PROTECT("in math_modf", return 0);
x = modf(x, &y); x = modf(x, &y);