From 93619cc41c1fc49ab0696993ee93e6ada5951a6d Mon Sep 17 00:00:00 2001
From: Tavian Barnes <tavianator@gmail.com>
Date: Thu, 30 Sep 2010 12:17:03 -0400
Subject: Don't assume M_PI will be defined.

---
 libdimension/dimension/geometry.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'libdimension')

diff --git a/libdimension/dimension/geometry.h b/libdimension/dimension/geometry.h
index 42a9985..c90c3c8 100644
--- a/libdimension/dimension/geometry.h
+++ b/libdimension/dimension/geometry.h
@@ -87,13 +87,13 @@ dmnsn_max(double a, double b)
 DMNSN_INLINE double
 dmnsn_radians(double degrees)
 {
-  return degrees*M_PI/180.0;
+  return degrees*atan(1.0)/45.0;
 }
 
 DMNSN_INLINE double
 dmnsn_degrees(double radians)
 {
-  return radians*180.0/M_PI;
+  return radians*45.0/atan(1.0);
 }
 
 /* Shorthand for vector/matrix construction */
-- 
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