delegate型変数をreadonlyに変更

diff --git a/Karinto/Fft.cs b/Karinto/Fft.cs
index bf047c1..8e0cbcb 100755 (executable)
--- a/Karinto/Fft.cs
+++ b/Karinto/Fft.cs
@@ -132,12 +132,12 @@ namespace Karinto
         #endregion\r
 \r
         #region fields\r
-        private static _Malloc Malloc;\r
-        private static _Free Free;\r
-        private static _PlanDft1d PlanDft1d;\r
-        private static _PlanDft2d PlanDft2d;\r
-        private static _Execute Execute;\r
-        private static _Destroy Destroy;\r
+        private static readonly _Malloc Malloc;\r
+        private static readonly _Free Free;\r
+        private static readonly _PlanDft1d PlanDft1d;\r
+        private static readonly _PlanDft2d PlanDft2d;\r
+        private static readonly _Execute Execute;\r
+        private static readonly _Destroy Destroy;\r
 \r
         private const int sizeOfComplex = 16;\r
         private double* alignedSrc;\r