From 141c746fc71b3f615378c5dc01cef2582682e3bd Mon Sep 17 00:00:00 2001
From: Mark Borgerding <mark@borgerding.net>
Date: Fri, 22 Jan 2010 01:17:36 -0500
Subject: if the src.stride() != 1, then the layout is not continuous -- need
 to copy to temporary

---
 unsupported/Eigen/FFT | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

(limited to 'unsupported/Eigen/FFT')

diff --git a/unsupported/Eigen/FFT b/unsupported/Eigen/FFT
index caaf79714..6c8cf7fdd 100644
--- a/unsupported/Eigen/FFT
+++ b/unsupported/Eigen/FFT
@@ -185,7 +185,13 @@ class FFT
         dst->derived().resize( (src.size()>>1)+1);
       else
         dst->derived().resize(src.size());
-      fwd( &(*dst)[0],&src[0],src.size() );
+
+      if (src.stride() != 1) {
+        Matrix<typename InputDerived::Scalar,1,Dynamic> tmp = src;
+        fwd( &(*dst)[0],&tmp[0],src.size() );
+      }else{
+        fwd( &(*dst)[0],&src[0],src.size() );
+      }
     }
 
     inline
@@ -219,7 +225,12 @@ class FFT
         int nfft = src.size();
         int nout = HasFlag(HalfSpectrum) ? ((nfft>>1)+1) : nfft;
         dst->derived().resize( nout );
-        inv( &(*dst)[0],&src[0], nfft);
+        if (src.stride() != 1) {
+          Matrix<typename ComplexDerived::Scalar,1,Dynamic> tmp = src;
+          inv( &(*dst)[0],&tmp[0], nfft);
+        }else{
+          inv( &(*dst)[0],&src[0], nfft);
+        }
     }
 
     template <typename _Output>
-- 
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