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