[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)
This is a part of #97655.
diff --git a/libc/src/math/fminf128.h b/libc/src/math/fminf128.h
index d2ed593..7bc393a 100644
--- a/libc/src/math/fminf128.h
+++ b/libc/src/math/fminf128.h
@@ -9,12 +9,13 @@
#ifndef LLVM_LIBC_SRC_MATH_FMINF128_H
#define LLVM_LIBC_SRC_MATH_FMINF128_H
+#include "src/__support/macros/config.h"
#include "src/__support/macros/properties/types.h"
-namespace LIBC_NAMESPACE {
+namespace LIBC_NAMESPACE_DECL {
float128 fminf128(float128 x, float128 y);
-} // namespace LIBC_NAMESPACE
+} // namespace LIBC_NAMESPACE_DECL
#endif // LLVM_LIBC_SRC_MATH_FMINF128_H