[libc-commits] [libc] [libc] make rand() wait-free (PR #99406)
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Wed Jul 17 16:51:54 PDT 2024
github-actions[bot] wrote:
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git-clang-format --diff 83251a22f623df8d27b6184d19b24c18d314f2bd 8a1379beffa8cb552da01c28e27c928d0718d2da --extensions cpp -- libc/src/stdlib/rand.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/libc/src/stdlib/rand.cpp b/libc/src/stdlib/rand.cpp
index 48b63ca7a5..c889d477c1 100644
--- a/libc/src/stdlib/rand.cpp
+++ b/libc/src/stdlib/rand.cpp
@@ -26,9 +26,9 @@ LLVM_LIBC_FUNCTION(int, rand, (void)) {
x = x * x + y;
x = (x >> 32) | (x << 32);
x = x * x + z;
- x = (x >> 32) | (x << 32);
+ x = (x >> 32) | (x << 32);
x = x * x + y;
- x = (x >> 32) | (x << 32);
+ x = (x >> 32) | (x << 32);
uint64_t result = (x * x + z) >> 32;
// project into range
return static_cast<int>(((result) % RAND_MAX + RAND_MAX) % RAND_MAX);
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https://github.com/llvm/llvm-project/pull/99406
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