commit 7a26464c6496c29244072fdd80f9b92c68174742
author Louie Lu <me@louie.lu> Fri Mar 31 01:05:10 2017 +0800
committer Serhiy Storchaka <storchaka@gmail.com> Thu Mar 30 20:05:10 2017 +0300
tree aaf901790c73cfc5f9e55361eb6ce9d88a12f54c
parent 5466d4af5fe76ec0a5fbc8a05675287d9e8e9d14

bpo-29946: Fix "sqrtpi defined but not used" (#908)

Modules/mathmodule.c

diff --git a/Modules/mathmodule.c b/Modules/mathmodule.c
index d5a8ca1..243560a 100644
--- a/Modules/mathmodule.c
+++ b/Modules/mathmodule.c
@@ -71,8 +71,10 @@
 */
 
 static const double pi = 3.141592653589793238462643383279502884197;
-static const double sqrtpi = 1.772453850905516027298167483341145182798;
 static const double logpi = 1.144729885849400174143427351353058711647;
+#if !defined(HAVE_ERF) || !defined(HAVE_ERFC)
+static const double sqrtpi = 1.772453850905516027298167483341145182798;
+#endif /* !defined(HAVE_ERF) || !defined(HAVE_ERFC) */
 
 static double
 sinpi(double x)