diff options
Diffstat (limited to 'Objects/floatobject.c')
| -rw-r--r-- | Objects/floatobject.c | 17 |
1 files changed, 5 insertions, 12 deletions
diff --git a/Objects/floatobject.c b/Objects/floatobject.c index 7cbb240..09c0e961 100644 --- a/Objects/floatobject.c +++ b/Objects/floatobject.c @@ -609,11 +609,8 @@ float_rem(PyObject *v, PyObject *w) else { /* the remainder is zero, and in the presence of signed zeroes fmod returns different results across platforms; ensure - it has the same sign as the denominator; we'd like to do - "mod = wx * 0.0", but that may get optimized away */ - mod *= mod; /* hide "mod = +0" from optimizer */ - if (wx < 0.0) - mod = -mod; + it has the same sign as the denominator. */ + mod = copysign(0.0, wx); } PyFPE_END_PROTECT(mod) return PyFloat_FromDouble(mod); @@ -649,11 +646,8 @@ float_divmod(PyObject *v, PyObject *w) else { /* the remainder is zero, and in the presence of signed zeroes fmod returns different results across platforms; ensure - it has the same sign as the denominator; we'd like to do - "mod = wx * 0.0", but that may get optimized away */ - mod *= mod; /* hide "mod = +0" from optimizer */ - if (wx < 0.0) - mod = -mod; + it has the same sign as the denominator. */ + mod = copysign(0.0, wx); } /* snap quotient to nearest integral value */ if (div) { @@ -663,8 +657,7 @@ float_divmod(PyObject *v, PyObject *w) } else { /* div is zero - get the same sign as the true quotient */ - div *= div; /* hide "div = +0" from optimizers */ - floordiv = div * vx / wx; /* zero w/ sign of vx/wx */ + floordiv = copysign(0.0, vx / wx); /* zero w/ sign of vx/wx */ } PyFPE_END_PROTECT(floordiv) return Py_BuildValue("(dd)", floordiv, mod); |