Added bx::unique.

src/sort.cpp

@@ -68,6 +68,32 @@ namespace bx
 		return true;
 	}
 
+	uint32_t unique(void* _data, uint32_t _num, uint32_t _stride, const ComparisonFn _fn)
+	{
+		if (0 == _num)
+		{
+			return 0;
+		}
+
+		uint8_t* data = (uint8_t*)_data;
+
+		uint32_t last = 0;
+
+		for (uint32_t ii = 1; ii < _num; ++ii)
+		{
+			int32_t result = _fn(&data[last*_stride], &data[ii*_stride]);
+			BX_ASSERT(0 >= result, "Performing unique on non-sorted array (ii %d, last %d)!", ii, last);
+
+			if (0 > result)
+			{
+				last++;
+				swap(&data[last*_stride], &data[ii*_stride], _stride);
+			}
+		}
+
+		return last+1;
+	}
+
 	uint32_t lowerBound(const void* _key, const void* _data, uint32_t _num, uint32_t _stride, const ComparisonFn _fn)
 	{
 		uint32_t offset = 0;
@@ -141,7 +167,7 @@ namespace bx
 			}
 		}
 
-		return -1;
+		return ~offset;
 	}
 
 } // namespace bx