Add check for C99 round function to configure, and define
a fallback function if round doesn't exist.
diff --git a/Python/pymath.c b/Python/pymath.c
index 2e049be..eb06eb2 100644
--- a/Python/pymath.c
+++ b/Python/pymath.c
@@ -69,6 +69,19 @@
}
#endif /* HAVE_COPYSIGN */
+#ifndef HAVE_ROUND
+double
+round(double x)
+{
+ double absx, y;
+ absx = fabs(x);
+ y = floor(absx);
+ if (absx - y >= 0.5)
+ y += 1.0;
+ return copysign(y, x);
+}
+#endif /* HAVE_ROUND */
+
#ifndef HAVE_LOG1P
#include <float.h>