Return +-Py_HUGE_VAL for tgamma(+-0) instead of risking FP exceptions by computing 1.0 / 0.0.

2011-09-25 15:26:43 +01:00 · 2011-09-25 15:26:43 +01:00 · 50203a69b3
parent 36f27c995a
commit 50203a69b3
1 changed files with 2 additions and 1 deletions
--- a/Modules/mathmodule.c
+++ b/Modules/mathmodule.c
@ -239,7 +239,8 @@ m_tgamma(double x)
    }
    if (x == 0.0) {
        errno = EDOM;
-        return 1.0/x; /* tgamma(+-0.0) = +-inf, divide-by-zero */
+        /* tgamma(+-0.0) = +-inf, divide-by-zero */
+        return copysign(Py_HUGE_VAL, x);
    }

    /* integer arguments */