comments for guids

include/fggl/util/guid.hpp

@@ -31,6 +31,12 @@ namespace fggl::util {
 	constexpr uint64_t FNV_PRIME_64 = 0x00000100000001B3;
 	constexpr uint64_t FNV_OFFSET_BASIS_64 = 0xcbf29ce484222325;
 
+	/**
+	 * Folwer-Noll-Vo 32-bit hash function.
+	 *
+	 * @param str the string to hash.
+	 * @return the hashed value
+	 */
 	constexpr uint32_t hash_fnv1a_32(const char* str) {
 		uint32_t hash = FNV_OFFSET_BASIS_32;
 		for (int i = 0; str[i] != '\0'; i++) {
@@ -40,6 +46,12 @@ namespace fggl::util {
 		return hash;
 	}
 
+	/**
+	 * Folwer-Noll-Vo 64-bit hash function.
+	 *
+	 * @param str the string to be hashed
+	 * @return the hashed value
+	 */
 	constexpr uint64_t hash_fnv1a_64(const char* str) {
 		uint64_t hash = FNV_OFFSET_BASIS_64;
 		for (int i = 0; str[i] != '\0'; i++) {