From 4bae3f55894e78ec6326d6dba8ac7e3eb39440aa Mon Sep 17 00:00:00 2001
From: tiwo <tiwocode@gmail.com>
Date: Sun, 18 Jun 2017 14:55:14 +0200
Subject: [PATCH] fix default arguments of mathutitls.clamp

---
 boltons/mathutils.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/boltons/mathutils.py b/boltons/mathutils.py
index 4dcfc5c..74123eb 100644
--- a/boltons/mathutils.py
+++ b/boltons/mathutils.py
@@ -5,7 +5,7 @@ from math import ceil as _ceil, floor as _floor
 import bisect
 
 
-def clamp(x, lower=None, upper=None):
+def clamp(x, lower=float('-inf'), upper=float('inf')):
     """Limit a value to a given range.
 
     Args: