comparison src/scalar.c @ 192:bb60691d9570

Make xtract_lowest_value() return XTRACT_NO_RESULT if all values in the input data are below or equal to threshold value. Fixes #46

If XTRACT_NO_RESULT is returned, *result will be set to DBL_MAX

 
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
 #include <math.h>
+#include <limits.h>
 
 #include "dywapitchtrack/dywapitchtrack.h"
 
 #include "../xtract/libxtract.h"
 #include "../xtract/xtract_helper.h"

 
 int xtract_lowest_value(const double *data, const int N, const void *argv, double *result)
 {
 
     int n = N;
-    double temp;
-
-    *result = data[--n];
-
-    while(n--)
-    {
-        if((temp = data[n]) > *(double *)argv)
+
+    *result = DBL_MAX;
+
+    while(n--)
+    {
+        if(data[n] > *(double *)argv)
             *result = XTRACT_MIN(*result, data[n]);
     }
 
+    if (*result == DBL_MAX)
+        return XTRACT_NO_RESULT;
+        
     return XTRACT_SUCCESS;
 }
 
 int xtract_highest_value(const double *data, const int N, const void *argv, double *result)
 {