[libc-commits] [libc] [libc] Add separate `rand` implementation for baremetal (PR #96798)

[Nick Desaulniers via libc-commits]

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@@ -0,0 +1,26 @@
+//===-- Implementation of rand --------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/stdlib/rand.h"
+#include "src/__support/common.h"
+#include "src/__support/threads/sleep.h"
+#include "src/stdlib/baremetal/rand_util.h"
+
+namespace LIBC_NAMESPACE {
+
+// An implementation of the xorshift64star pseudo random number generator. This
+// is a good general purpose generator for most non-cryptographics applications.
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nickdesaulniers wrote:

Consider adding a note that this is not MT safe; baremetal callers will need to provide their own synchronization if they require such safety for this function.

https://github.com/llvm/llvm-project/pull/96798