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-rw-r--r--math/w_exp2_compat.c20
1 files changed, 17 insertions, 3 deletions
diff --git a/math/w_exp2_compat.c b/math/w_exp2_compat.c
index 7ab618292f..567383d001 100644
--- a/math/w_exp2_compat.c
+++ b/math/w_exp2_compat.c
@@ -7,9 +7,11 @@
#include <math-svid-compat.h>
#include <libm-alias-double.h>
-#if LIBM_SVID_COMPAT
+#if LIBM_SVID_COMPAT && (SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_29) \
+ || defined NO_LONG_DOUBLE \
+ || defined LONG_DOUBLE_COMPAT)
double
-__exp2 (double x)
+__exp2_compat (double x)
{
double z = __ieee754_exp2 (x);
if (__builtin_expect (!isfinite (z) || z == 0, 0)
@@ -19,5 +21,17 @@ __exp2 (double x)
return z;
}
-libm_alias_double (__exp2, exp2)
+# if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_29)
+compat_symbol (libm, __exp2_compat, exp2, GLIBC_2_1);
+# endif
+# ifdef NO_LONG_DOUBLE
+weak_alias (__exp2_compat, exp2l)
+# endif
+# ifdef LONG_DOUBLE_COMPAT
+/* Work around gas bug "multiple versions for symbol". */
+weak_alias (__exp2_compat, __exp2_compat_alias)
+
+LONG_DOUBLE_COMPAT_CHOOSE_libm_exp2l (
+ compat_symbol (libm, __exp2_compat_alias, exp2l, FIRST_VERSION_libm_exp2l), );
+# endif
#endif