Diff: main.cpp

Revision:

3:4ef52c7f5281

Parent:

2:03e1399ed9eb

Child:

4:8248d5b5cdc9

--- a/main.cpp	Thu Oct 29 06:33:32 2015 +0000
+++ b/main.cpp	Mon Jan 13 08:57:54 2020 +0000
@@ -1,13 +1,12 @@
 //--------------------------------------------------------------
 // Demo program of FftReal class
-// Copyright (c) 2015 MIKAMI, Naoki,  2015/10/29
+//
+// Copyright (c) 2020 MIKAMI, Naoki,  2020/01/13
 //--------------------------------------------------------------
 
 #include "dftComplex.hpp"
 #include "fftReal.hpp"
 
-#include "mbed.h"
-
 using namespace Mikami;
 
 int main()
@@ -26,15 +25,19 @@
     for (int n=0; n<N; n++)
         printf("f[%2d]: %8.4f\r\n", n, x1[n]);
 
+    Timer tm;   // for measurement of execution time
+
     // DFT, for comarison
+    tm.reset();
+    tm.start();
     DftComplex(x1, y1, N);
+    tm.stop();
+    printf("\r\nExecution time (DFT): %d [us]\r\n", tm.read_us());
     printf("\r\n#### Result of direct DFT ####\r\n");
     printf("          real    imaginary\r\n");
     for (int n=0; n<N; n++)
         printf("F[%2d]: %8.4f, %8.4f\r\n", n, y1[n].real(), y1[n].imag());
 
-    Timer tm;   // for measurement of execution time
-
     // FFT
     FftReal fft(N);
     tm.reset();
@@ -56,4 +59,4 @@
     printf("        original  IFFT of FFT\r\n");
     for (int n=0; n<N; n++)
         printf("f[%2d]: %8.4f, %8.4f\r\n", n, x1[n], x2[n]);
-}
+}
\ No newline at end of file