Small code clean-up.

README.md

@@ -74,7 +74,7 @@ API Reference
 
 This section describes the LibHashSet programming interface, as declared in the `<hash_set.h>` header file.
 
-LibHashSet supports sets containing values of type `uint32_t` or `uint64_t`. For each value type, separate functions are provided. The functions for `uint32_t`- and `uint64_t`-based hash sets can be distinguished by the suffix `…32` and `…64` suffix, respectively. In the following, the functions are described in their "generic" form.
+LibHashSet supports sets containing values of type `uint32_t` or `uint64_t`. For each value type, separate functions are provided. The functions for `uint32_t`- and `uint64_t`-based hash sets can be distinguished by the suffix `…32` and `…64`, respectively. In the following, the functions are described in their "generic" (`value_t`) form.
 
 ***Note:*** On Microsoft Windows, when using LibHashSet as a "shared" library (DLL), the macro `HASHSET_DLL` must be defined *before* including `<hash_set.h>`! This is **not** required or allowed when using the "static" library.
 
@@ -401,7 +401,7 @@ Dump the current status and content of all "slots" of the hash set.
 ```C
 errno_t hash_set_dump(
 	const hash_set_t *const instance,
-	int (*callback)(const size_t index, const int status, const uint32_t value)
+	int (*callback)(const size_t index, const char status, const value_t value)
 );
 ```
 
@@ -416,8 +416,8 @@ errno_t hash_set_dump(
   ```C
     int callback(
 		const size_t index,
-		const int status,
+		const char status,
-		const uint32_t value
+		const value_t value
 	);
   ```
   ##### Parameters
@@ -427,16 +427,16 @@ errno_t hash_set_dump(
 
   * `status`  
     Indicates the status of the current "slot":
-    - `0` &ndash; slot is *unused*
+    - `'u'` &ndash; the slot is *unused*
-    - `1` &ndash; slot is *valid*
+    - `'v'` &ndash; the slot is *valid*
-    - `2` &ndash; slot is *deleted*
+    - `'d'` &ndash; the slot is *deleted*
 
   * `value`  
     The value that is stored at the current "slot" index.
 
   ##### Return value
 
-  If the function returns *zero*, the iteration is cancelled; otherwise the iteration continues.
+  If the function returns a *non-zero* value, the iteration continues; otherwise it is cancelled.
 
 #### Return value
 

libhashset/include/hash_set.h

@@ -67,8 +67,8 @@ HASHSET_API size_t hash_set_size64(const hash_set64_t *const instance);
 HASHSET_API errno_t hash_set_info32(const hash_set32_t *const instance, size_t *const capacity, size_t *const valid, size_t *const deleted, size_t *const limit);
 HASHSET_API errno_t hash_set_info64(const hash_set64_t *const instance, size_t *const capacity, size_t *const valid, size_t *const deleted, size_t *const limit);
 
-HASHSET_API errno_t hash_set_dump32(const hash_set32_t *const instance, int (*const callback)(const size_t index, const int status, const uint32_t value));
+HASHSET_API errno_t hash_set_dump32(const hash_set32_t *const instance, int (*const callback)(const size_t index, const char status, const uint32_t value));
-HASHSET_API errno_t hash_set_dump64(const hash_set64_t *const instance, int (*const callback)(const size_t index, const int status, const uint64_t value));
+HASHSET_API errno_t hash_set_dump64(const hash_set64_t *const instance, int (*const callback)(const size_t index, const char status, const uint64_t value));
 
 #ifdef __cplusplus
 }

libhashset/src/generic.h

@@ -420,7 +420,7 @@ errno_t MAKE_NAME(hash_set_info)(const hash_set_t *const instance, size_t *const
 	return 0;
 }
 
-HASHSET_API errno_t MAKE_NAME(hash_set_dump)(const hash_set_t *const instance, int (*const callback)(const size_t index, const int status, const value_t value))
+HASHSET_API errno_t MAKE_NAME(hash_set_dump)(const hash_set_t *const instance, int (*const callback)(const size_t index, const char status, const value_t value))
 {
 	size_t index;
 
@@ -431,7 +431,7 @@ HASHSET_API errno_t MAKE_NAME(hash_set_dump)(const hash_set_t *const instance, i
 
 	for (index = 0U; index < instance->data.capacity; ++index)
 	{
-		if (!callback(index, get_flag(instance->data.used, index) ? (get_flag(instance->data.deleted, index) ? 2 : 1) : 0, instance->data.values[index]))
+		if (!callback(index, get_flag(instance->data.used, index) ? (get_flag(instance->data.deleted, index) ? 'd' : 'v') : 'u', instance->data.values[index]))
 		{
 			return ECANCELED;
 		}