Commit : Denoise First Commit

denoise/denoise.c

@@ -0,0 +1,40 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include "../header/wavelib.h"
+
+int compare_double(const void* a, const void* b)
+{
+    double arg1 = *(const double*)a;
+    double arg2 = *(const double*)b;
+ 
+    if (arg1 < arg2) return -1;
+    if (arg1 > arg2) return 1;
+    return 0;
+ 
+}
+
+double median(double *x, int N) {
+	double sigma;
+ 
+    qsort(x, N, sizeof(double), compare_double);
+    
+    if ((N % 2) == 0) {
+		sigma = (x[N/2 - 1] + x[N/2] ) / 2.0;
+	} else {
+		sigma = x[N/2];
+	}
+	
+	return sigma;
+}
+ 
+int main(void)
+{
+	int i;
+    double x[10] = { -2.4, 100.9,33 ,34,0,-6, -74.3, 2.9789, 271, 42 };
+    
+ 
+    printf("Median %g \n",median(x,10));
+    for(i = 0; i < 10;++i) {
+		printf("%g ",x[i]);
+	}
+}