* Fixing warnings-as-errors on gcc/clang

Author: benmccart

fuzzy/include/fuzzy/algorithm.hpp

@@ -821,7 +821,7 @@ namespace fuzzy
 			auto calc_steps = [&](element_type lhs, element_type rhs) -> std::size_t
 			{
 				assert(rhs.value() > lhs.value());
-				std::size_t const steps = std::min(static_cast<std::size_t>(rhs.value() - lhs.value()) - 1ull, step_count);
+				std::size_t const steps = std::min(static_cast<std::size_t>(rhs.value() - lhs.value()) - static_cast<std::size_t>(1), step_count);
 				return std::min(steps, buffer.size());
 			};
 

fuzzy/include/fuzzy/expressions.hpp

@@ -122,7 +122,7 @@ namespace fuzzy
 			return itr;
 		};
 
-		std::size_t const segment_count = static_cast<std::size_t>(variable.size() - 1u);
+		key_type const segment_count = static_cast<key_type>(variable.size() - static_cast<std::size_t>(1));
 		key_type const segment_ratio = static_cast<key_type>(1) / segment_count;
 		for (basic_element<V, M> const& e : set)
 		{
@@ -134,7 +134,7 @@ namespace fuzzy
 			assert(itr_lower->value() <= e.value());
 			assert(itr_upper != variable.end() && e.value() <= itr_upper->value());
 
-			key_type const offset = static_cast<key_type>(e.value()) - itr_lower->value();
+			key_type const offset = static_cast<key_type>(e.value() - itr_lower->value());
 			key_type const segment_range = static_cast<key_type>(itr_upper->value() - itr_lower->value());
 			key_type const offset_ratio = offset / segment_range;
 			assert(static_cast<key_type>(0) <= offset_ratio && offset_ratio <= static_cast<key_type>(1));

fuzzy/include/fuzzy/scaled_mapping.hpp

@@ -72,7 +72,7 @@ namespace fuzzy
 		{
 			// Calcualte the index and get the matching itr in consequent/destination.
 			key_type const offset = ele.value() / median_segment_ratio;
-			std::size_t const index = static_cast<std::size_t>(offset);
+			std::ptrdiff_t const index = static_cast<std::ptrdiff_t>(offset);
 			auto itr = dst.cbegin() + index;
 			key_type const remainder = offset - static_cast<key_type>(index);
 			assert(static_cast<key_type>(0) <= remainder && remainder <= static_cast<key_type>(1));