diff --git a/libc/src/__support/FPUtil/FEnvImpl.h b/libc/src/__support/FPUtil/FEnvImpl.h
index 50a101f833c55..ba145a3da45cc 100644
--- a/libc/src/__support/FPUtil/FEnvImpl.h
+++ b/libc/src/__support/FPUtil/FEnvImpl.h
@@ -15,6 +15,7 @@
#include "src/__support/libc_errno.h"
#include "src/__support/macros/attributes.h" // LIBC_INLINE
#include "src/__support/macros/config.h"
+#include "src/__support/macros/optimization.h"
#include "src/__support/macros/properties/architectures.h"
#if defined(LIBC_TARGET_ARCH_IS_AARCH64) && defined(__ARM_FP)
@@ -71,27 +72,35 @@ LIBC_INLINE int set_env(const fenv_t *) { return 0; }
namespace LIBC_NAMESPACE_DECL {
namespace fputil {
-LIBC_INLINE int clear_except_if_required(int excepts) {
+LIBC_INLINE static int clear_except_if_required([[maybe_unused]] int excepts) {
+#ifndef LIBC_MATH_HAS_NO_EXCEPT
if (math_errhandling & MATH_ERREXCEPT)
return clear_except(excepts);
+#endif // LIBC_MATH_HAS_NO_EXCEPT
return 0;
}
-LIBC_INLINE int set_except_if_required(int excepts) {
+LIBC_INLINE static int set_except_if_required([[maybe_unused]] int excepts) {
+#ifndef LIBC_MATH_HAS_NO_EXCEPT
if (math_errhandling & MATH_ERREXCEPT)
return set_except(excepts);
+#endif // LIBC_MATH_HAS_NO_EXCEPT
return 0;
}
-LIBC_INLINE int raise_except_if_required(int excepts) {
+LIBC_INLINE static int raise_except_if_required([[maybe_unused]] int excepts) {
+#ifndef LIBC_MATH_HAS_NO_EXCEPT
if (math_errhandling & MATH_ERREXCEPT)
return raise_except(excepts);
+#endif // LIBC_MATH_HAS_NO_EXCEPT
return 0;
}
-LIBC_INLINE void set_errno_if_required(int err) {
+LIBC_INLINE static void set_errno_if_required([[maybe_unused]] int err) {
+#ifndef LIBC_MATH_HAS_NO_ERRNO
if (math_errhandling & MATH_ERRNO)
libc_errno = err;
+#endif // LIBC_MATH_HAS_NO_ERRNO
}
} // namespace fputil
diff --git a/libc/src/__support/macros/optimization.h b/libc/src/__support/macros/optimization.h
index 253843e5e37aa..db008d323b3a3 100644
--- a/libc/src/__support/macros/optimization.h
+++ b/libc/src/__support/macros/optimization.h
@@ -63,4 +63,12 @@ LIBC_INLINE constexpr bool expects_bool_condition(T value, T expected) {
#define LIBC_MATH_HAS_INTERMEDIATE_COMP_IN_FLOAT
#endif
+#if (LIBC_MATH & LIBC_MATH_NO_ERRNO)
+#define LIBC_MATH_HAS_NO_ERRNO
+#endif
+
+#if (LIBC_MATH & LIBC_MATH_NO_EXCEPT)
+#define LIBC_MATH_HAS_NO_EXCEPT
+#endif
+
#endif // LLVM_LIBC_SRC___SUPPORT_MACROS_OPTIMIZATION_H
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