fixed sign type mismatch warnings in cnpy

modules/dnn/test/cnpy.cpp

@@ -65,7 +65,7 @@ void cnpy::parse_npy_header(FILE* fp, unsigned int& word_size, unsigned int*& sh
     std::string header = fgets(buffer,256,fp);
     assert(header[header.size()-1] == '\n');
 
-    int loc1, loc2;
+    size_t loc1, loc2;
 
     //fortran order
     loc1 = header.find("fortran_order")+16;
@@ -76,7 +76,7 @@ void cnpy::parse_npy_header(FILE* fp, unsigned int& word_size, unsigned int*& sh
     loc2 = header.find(")");
     std::string str_shape = header.substr(loc1+1,loc2-loc1-1);
     if(str_shape[str_shape.size()-1] == ',') ndims = 1;
-    else ndims = std::count(str_shape.begin(),str_shape.end(),',')+1;
+    else ndims = (unsigned)std::count(str_shape.begin(),str_shape.end(),',')+1;
     shape = new unsigned int[ndims];
     for(unsigned int i = 0;i < ndims;i++) {
         loc1 = str_shape.find(",");

modules/dnn/test/cnpy.h

@@ -87,7 +87,7 @@ namespace cnpy {
                 assert(tmp_dims == ndims);
             }
 
-            for(int i = 1; i < ndims; i++) {
+            for(unsigned i = 1; i < ndims; i++) {
                 if(shape[i] != tmp_shape[i]) {
                     std::cout<<"libnpy error: npy_save attempting to append misshaped data to "<<fname<<"\n";
                     assert(shape[i] == tmp_shape[i]);
@@ -109,7 +109,7 @@ namespace cnpy {
         }
 
         unsigned int nels = 1;
-        for(int i = 0;i < ndims;i++) nels *= shape[i];
+        for(unsigned i = 0;i < ndims;i++) nels *= shape[i];
 
         fwrite(data,sizeof(T),nels,fp);
         fclose(fp);
@@ -219,7 +219,7 @@ namespace cnpy {
         dict += tostring(sizeof(T));
         dict += "', 'fortran_order': False, 'shape': (";
         dict += tostring(shape[0]);
-        for(int i = 1;i < ndims;i++) {
+        for(unsigned i = 1;i < ndims;i++) {
             dict += ", ";
             dict += tostring(shape[i]);
         }