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1//
2// rand_s.cpp
3//
4// Copyright (c) Microsoft Corporation. All rights reserved.
5//
6// The implementation of the rand_s() function, which generates random numbers.
7//
8#include <corecrt_internal.h>
9#include <stdlib.h>
10
11
12
13extern "C" errno_t __cdecl rand_s(unsigned int* const result)
14{
15 _VALIDATE_RETURN_ERRCODE(result != nullptr, EINVAL);
16 *result = 0;
17
18 if (!__acrt_RtlGenRandom(result, static_cast<ULONG>(sizeof(*result))))
19 {
20 errno = ENOMEM;
21 return errno;
22 }
23
24 return 0;
25}