1 //===-- Shared utility for rand -------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "src/stdlib/rand_util.h" 10 #include "src/__support/macros/attributes.h" 11 12 namespace LIBC_NAMESPACE { 13 14 #ifdef LIBC_TARGET_ARCH_IS_GPU 15 // FIXME: Local GPU memory cannot be initialized so we cannot currently provide 16 // a standard compliant default value. 17 ThreadLocal<unsigned long> rand_next; 18 #else 19 // C standard 7.10p2: If 'rand' is called before 'srand' it is to proceed as if 20 // the 'srand' function was called with a value of '1'. 21 LIBC_THREAD_LOCAL unsigned long rand_next = 1; 22 #endif 23 24 } // namespace LIBC_NAMESPACE 25