- added example05 for clfft real in-place transform

- added readme to example04 for installing clfft

example04/README.md

@@ -0,0 +1,32 @@
+# example 04
+
+## Installing CLFFT
+After cloning the repository, run the following (in the top-level of the directory):
+
+```
+git clone https://github.com/clMathLibraries/clFFT.git
+cd clFFT
+mkdir build
+cd build
+cmake ../src
+make
+make install
+```
+
+and then
+
+```
+export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:`pwd`/clFFT/build/package/lib64
+```
+
+(`pwd` should give the path to the top-level of the repository!).
+
+## Running it
+In the top-level directory, run
+
+```
+make ex04
+./example04/bin/Example
+```
+
+and it should print out a vector! :hamburger:

example04/main.c

@@ -107,9 +107,7 @@ int main( int argc, char* argv[] ) {
     clfftEnqueueTransform(planHandleForward, CLFFT_FORWARD, 1, &queue, 0, NULL, NULL, &inputBuffers, NULL, NULL);
     clFinish(queue);
  
-     err = clEnqueueNDRangeKernel(queue, k_mult, 1, NULL, &globalSize, &localSize, 0, NULL, NULL);
-     if (err != CL_SUCCESS)
-         printf("oh wtf\n");
+    err = clEnqueueNDRangeKernel(queue, k_mult, 1, NULL, &globalSize, &localSize, 0, NULL, NULL);
 
     clfftEnqueueTransform(planHandleBackward, CLFFT_BACKWARD, 1, &queue, 0, NULL, NULL, &inputBuffers, NULL, NULL);