Add wpArrayZero

CHANGELOG.md

@@ -24,6 +24,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - `WpSplitmix64State`
 - `wpPrngSplitmix64Init`, `wpPrngSplitmix64InitWithSeed`, `wpPrngSplitmix64`, `wpPrngSplitmix64InRange`, `wpPrngSplitmix64Choice`
 - `wpStr8Clear`
+- `wpArrayZero` to zero all elements in an array without setting the count to 0
 
 ### Changed
 

src/base/array/array.c

@@ -208,6 +208,14 @@ void *arrayPop(WpArray array, u64 item_size) {
 	return out;
 }
 
+void arrayZero(WpArray array, u64 item_size) {
+	wpRuntimeAssert(array != NULL, "`array` should not be NULL");
+	arrayValidate(array, item_size);
+
+	WpArrayHeader *header = arrayHeader(array);
+	memset(array, 0, header->capacity * header->item_size);
+}
+
 void arrayClear(WpArray array, u64 item_size) {
 	wpRuntimeAssert(array != NULL, "`array` should not be NULL");
 	arrayValidate(array, item_size);

src/base/array/array.h

@@ -168,9 +168,8 @@ typedef enum WpArrayInitFlags {
 	                        (WpArray)SRC_ARRAY,                                                      \
 	                        FLAGS,                                                                   \
 	                        sizeof(TYPE)))
-#define wpArrayClear(TYPE, ARRAY)                                                                  \
-	(arrayClear((WpArray)ARRAY,                                                                      \
-	             sizeof(TYPE)))
+#define wpArrayZero(TYPE, ARRAY) (arrayZero((WpArray)ARRAY, sizeof(TYPE)))
+#define wpArrayClear(TYPE, ARRAY) (arrayClear((WpArray)ARRAY, sizeof(TYPE)))
 #define wpArrayCalcAllocSize(TYPE, CAPACITY) arrayCalcAllocSize(CAPACITY, sizeof(TYPE))
 #define wpArrayAllocCapacity(TYPE, ALLOCATOR_PTR, CAPACITY, FLAGS)                                 \
 	((TYPE *)arrayAllocCapacity(ALLOCATOR_PTR, CAPACITY, FLAGS, sizeof(TYPE)))
@@ -206,6 +205,7 @@ WpArray arrayExtendAlloc(const WpAllocator *allocator, WpArray dst, const WpArra
 WpArray arrayCopyAlloc(const WpAllocator *allocator, WpArray dst, const WpArray src,
                        WpArrayInitFlags flags, u64 item_size);
 void   *arrayPop(WpArray array, u64 item_size);
+void    arrayZero(WpArray array, u64 item_size);
 void    arrayClear(WpArray array, u64 item_size);
 u64     arrayCalcAllocSize(u64 capacity, u64 item_size);
 WpArray arrayAllocCapacity(const WpAllocator *allocator, u64 capacity, WpArrayInitFlags flags,