> ## Documentation Index
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> Use this file to discover all available pages before exploring further.

# AR Osal Memory Op

> Defines public APIs for memory operations.

**Header:** `ar_osal/api/ar_osal_mem_op.h`

## Functions

### `ar_mem_cpy`

ar\_mem\_cpy copies bytes between buffers.

```cpp theme={null}
int32_t ar_mem_cpy(void *dest, size_t dest_size, const void *src, size_t size)
```

**Parameters**

<ParamField path="[in_out]" type="">
  dest: destinatiopn buffer to copy data.
</ParamField>

<ParamField path="dest_size" type="size_t">
  destination buffer size.
</ParamField>

<ParamField path="src" type="const void *">
  source buffer pointer to copy data from.
</ParamField>

<ParamField path="size" type="size_t">
  bytes to copy from source buffer.
</ParamField>

**Returns**

0  Success Nonzero  Failure

### `ar_mem_move`

ar\_mem\_move copies bytes from source area to destination area.

```cpp theme={null}
int32_t ar_mem_move(void *dest, size_t dest_size, const void *src, size_t size)
```

**Parameters**

<ParamField path="[in_out]" type="">
  dest: destinatiopn buffer to copy data.
</ParamField>

<ParamField path="dest_size" type="size_t">
  destination buffer size.
</ParamField>

<ParamField path="src" type="const void *">
  source buffer pointer to copy data from.
</ParamField>

<ParamField path="size" type="size_t">
  bytes to copy from source buffer.
</ParamField>

**Returns**

0  Success Nonzero  Failure note: If some regions of the source area and the destination overlap, ar\_mem\_move ensures that the original source bytes in the overlapping region are copied before being overwritten.

### `ar_mem_set`

ar\_mem\_set set buffer to specified value.

```cpp theme={null}
int32_t ar_mem_set(void *dest, int32_t c, size_t size)
```

**Parameters**

<ParamField path="[in_out]" type="">
  dest: destinatiopn buffer to set the specified value.
</ParamField>

<ParamField path="c" type="int32_t">
  specified value to set, of integer type.
</ParamField>

<ParamField path="size" type="size_t">
  buffer bytes to set the value, must be multiple of specified value "c" data size.
</ParamField>

**Returns**

0  Success Nonzero  Failure

### `ar_mem_cmp`

ar\_mem\_cmp compare two buffers.

```cpp theme={null}
int32_t ar_mem_cmp(const void *buff1, const void *buff2, size_t size)
```

**Parameters**

<ParamField path="buff1" type="const void *">
  first buffer.
</ParamField>

<ParamField path="buff2" type="const void *">
  second buffer.
</ParamField>

<ParamField path="size" type="size_t">
  bytes to compare.
</ParamField>

**Returns**

0 buff1 \< buff2 0 buff1 == buff2 0 buff1 > buff2