math: redirect roundeven function

This patch redirect roundeven function for futhermore changes.

Signed-off-by: Shen-Ta Hsieh <ibmibmibm.tw@gmail.com>
Reviewed-by: H.J. Lu <hjl.tools@gmail.com>

include/math.h

@@ -38,7 +38,6 @@ libm_hidden_proto (__issignaling)
 libm_hidden_proto (__issignalingf)
 libm_hidden_proto (__exp)
 libm_hidden_proto (__expf)
-libm_hidden_proto (__roundeven)
 
 #  if !defined __NO_LONG_DOUBLE_MATH \
       && __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 0
@@ -159,6 +158,7 @@ fabsf128 (_Float128 x)
 MATH_REDIRECT (sqrt, "__ieee754_", MATH_REDIRECT_UNARY_ARGS)
 MATH_REDIRECT (ceil, "__", MATH_REDIRECT_UNARY_ARGS)
 MATH_REDIRECT (floor, "__", MATH_REDIRECT_UNARY_ARGS)
+MATH_REDIRECT (roundeven, "__", MATH_REDIRECT_UNARY_ARGS)
 MATH_REDIRECT (rint, "__", MATH_REDIRECT_UNARY_ARGS)
 MATH_REDIRECT (trunc, "__", MATH_REDIRECT_UNARY_ARGS)
 MATH_REDIRECT (round, "__", MATH_REDIRECT_UNARY_ARGS)

sysdeps/ieee754/dbl-64/s_roundeven.c

@@ -16,6 +16,7 @@
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
 
+#define NO_MATH_REDIRECT
 #include <math.h>
 #include <math_private.h>
 #include <libm-alias-double.h>
@@ -66,5 +67,6 @@ __roundeven (double x)
   INSERT_WORDS64 (x, ix);
   return x;
 }
-hidden_def (__roundeven)
+#ifndef __roundeven
 libm_alias_double (__roundeven, roundeven)
+#endif

sysdeps/ieee754/float128/s_roundevenf128.c

@@ -1,2 +1,3 @@
+#define NO_MATH_REDIRECT
 #include <float128_private.h>
 #include "../ldbl-128/s_roundevenl.c"

sysdeps/ieee754/flt-32/s_roundevenf.c

@@ -17,6 +17,7 @@
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
 
+#define NO_MATH_REDIRECT
 #include <math.h>
 #include <math_private.h>
 #include <libm-alias-float.h>
@@ -67,4 +68,6 @@ __roundevenf (float x)
   SET_FLOAT_WORD (x, ix);
   return x;
 }
+#ifndef __roundevenf
 libm_alias_float (__roundeven, roundeven)
+#endif

sysdeps/ieee754/ldbl-128/s_roundevenl.c

@@ -17,6 +17,7 @@
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
 
+#define NO_MATH_REDIRECT
 #include <math.h>
 #include <math_private.h>
 #include <libm-alias-ldouble.h>

sysdeps/ieee754/ldbl-96/s_roundevenl.c

@@ -17,6 +17,7 @@
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
 
+#define NO_MATH_REDIRECT
 #include <math.h>
 #include <math_private.h>
 #include <libm-alias-ldouble.h>