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-rw-r--r--lib/count-trailing-zeros.h8
1 files changed, 7 insertions, 1 deletions
diff --git a/lib/count-trailing-zeros.h b/lib/count-trailing-zeros.h
index 15e85708d18..1eb5fb919f4 100644
--- a/lib/count-trailing-zeros.h
+++ b/lib/count-trailing-zeros.h
@@ -30,6 +30,10 @@ _GL_INLINE_HEADER_BEGIN
# define COUNT_TRAILING_ZEROS_INLINE _GL_INLINE
#endif
+#ifdef __cplusplus
+extern "C" {
+#endif
+
/* Assuming the GCC builtin is BUILTIN and the MSC builtin is MSC_BUILTIN,
expand to code that computes the number of trailing zeros of the local
variable 'x' of type TYPE (an unsigned integer type) and return it
@@ -92,7 +96,6 @@ count_trailing_zeros_l (unsigned long int x)
COUNT_TRAILING_ZEROS (__builtin_ctzl, _BitScanForward, unsigned long int);
}
-#if HAVE_UNSIGNED_LONG_LONG_INT
/* Compute and return the number of trailing zeros in X. */
COUNT_TRAILING_ZEROS_INLINE int
count_trailing_zeros_ll (unsigned long long int x)
@@ -100,6 +103,9 @@ count_trailing_zeros_ll (unsigned long long int x)
COUNT_TRAILING_ZEROS (__builtin_ctzll, _BitScanForward64,
unsigned long long int);
}
+
+#ifdef __cplusplus
+}
#endif
_GL_INLINE_HEADER_END