fixed the use of integer types in pow()

DESCRIPTION

@@ -1,8 +1,8 @@
 Package: hilbertSimilarity
 Type: Package
 Title: Hilbert Similarity Index for High Dimensional Data
-Version: 0.4.2.9000
-Date: 2019-10-29
+Version: 0.4.3
+Date: 2019-11-11
 Authors@R: c(person('Yann','Abraham',email='[email protected]',role=c('aut','cre')),
              person('Marilisa','Neri',email='[email protected]',role='aut'),
              person('John','Skilling',role='ctb'))

cran-comments.md

@@ -16,8 +16,7 @@
 
 ## reviewers comments
 
-* I fixed the problem with changing user parameters, using on.exit() as suggested
-* I added missing \value to the documentation of add.cut, do.cut, hilbert.order and show.cut
+* I fixed the comment on using math.pow with integer arguments
 
 ## Reverse dependencies
 

src/mapping.cpp

@@ -87,10 +87,14 @@ NumericVector hilbertMapping(NumericMatrix x, int bits) {
       X[i] = x(k,i);
     }
     AxestoTranspose (X, bits, ndim);                            // Hilbert transpose for bits and Ndim dimensions
-    for (int j=bits-1, power=(bits*ndim)-1; j>=0; j--) {
-      for (int i=0; i<ndim; i++, power--) {
-        out(k) += (X[i]>>j & 1) * pow (2, power);
-      }
+    {
+        int j;
+        float power;
+        for ( j=bits-1, power=(bits*ndim)-1; j>=0; j--) {
+            for (int i=0; i<ndim; i++, power--) {
+                out(k) += (X[i]>>j & 1) * pow (2.0, power);
+            }
+        }
     }
   }
   return out;