[BZ #6803] Set errno for scalbln, scalbn

Errno is not set and the testcases will fail.

Now the scalbln-aliases are removed in i386/m68
and the wrappers are used when calling the scalbln-functions.

On ia64 only scalblnf has its own implementation.
For scalbln and scalblnl the ieee754/dbl-64 and ieee754/ldbl-96 are used, thus
the wrappers are needed, too.

9 files changed, 50 insertions, 13 deletions

diff --git a/sysdeps/ieee754/dbl-64/s_scalbln.c b/sysdeps/ieee754/dbl-64/s_scalbln.c
index 874b98e4cf..32cd12e3b0 100644
--- a/sysdeps/ieee754/dbl-64/s_scalbln.c
+++ b/sysdeps/ieee754/dbl-64/s_scalbln.c
@@ -58,8 +58,6 @@ __scalbln (double x, long int n)
   SET_HIGH_WORD (x, (hx & 0x800fffff) | (k << 20));
   return x * twom54;
 }
-weak_alias (__scalbln, scalbln)
 #ifdef NO_LONG_DOUBLE
 strong_alias (__scalbln, __scalblnl)
-weak_alias (__scalbln, scalblnl)
 #endif
diff --git a/sysdeps/ieee754/dbl-64/wordsize-64/s_scalbln.c b/sysdeps/ieee754/dbl-64/wordsize-64/s_scalbln.c
index c00db68ddf..8dce51e928 100644
--- a/sysdeps/ieee754/dbl-64/wordsize-64/s_scalbln.c
+++ b/sysdeps/ieee754/dbl-64/wordsize-64/s_scalbln.c
@@ -55,8 +55,6 @@ __scalbln (double x, long int n)
 	INSERT_WORDS64(x,(ix&INT64_C(0x800fffffffffffff))|(k<<52));
 	return x*twom54;
 }
-weak_alias (__scalbln, scalbln)
 #ifdef NO_LONG_DOUBLE
 strong_alias (__scalbln, __scalblnl)
-weak_alias (__scalbln, scalblnl)
 #endif
diff --git a/sysdeps/ieee754/flt-32/s_scalblnf.c b/sysdeps/ieee754/flt-32/s_scalblnf.c
index aa45164d2f..ad3c586b33 100644
--- a/sysdeps/ieee754/flt-32/s_scalblnf.c
+++ b/sysdeps/ieee754/flt-32/s_scalblnf.c
@@ -50,4 +50,3 @@ __scalblnf (float x, long int n)
 	SET_FLOAT_WORD(x,(ix&0x807fffff)|(k<<23));
 	return x*twom25;
 }
-weak_alias (__scalblnf, scalblnf)
diff --git a/sysdeps/ieee754/ldbl-128/s_scalblnl.c b/sysdeps/ieee754/ldbl-128/s_scalblnl.c
index f55239376d..1e24197c63 100644
--- a/sysdeps/ieee754/ldbl-128/s_scalblnl.c
+++ b/sysdeps/ieee754/ldbl-128/s_scalblnl.c
@@ -60,4 +60,3 @@ long double __scalblnl (long double x, long int n)
 	SET_LDOUBLE_MSW64(x,(hx&0x8000ffffffffffffULL)|(k<<48));
         return x*twom114;
 }
-weak_alias (__scalblnl, scalblnl)
diff --git a/sysdeps/ieee754/ldbl-128ibm/s_scalblnl.c b/sysdeps/ieee754/ldbl-128ibm/s_scalblnl.c
index 03d4597271..031635267f 100644
--- a/sysdeps/ieee754/ldbl-128ibm/s_scalblnl.c
+++ b/sysdeps/ieee754/ldbl-128ibm/s_scalblnl.c
@@ -102,4 +102,3 @@ long double __scalblnl (long double x, long int n)
 	x = ldbl_pack (xhi, xlo);
 	return x*twolm54;
 }
-long_double_symbol (libm, __scalblnl, scalblnl);
diff --git a/sysdeps/ieee754/ldbl-128ibm/w_scalblnl.c b/sysdeps/ieee754/ldbl-128ibm/w_scalblnl.c
new file mode 100644
index 0000000000..24a5461033
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm/w_scalblnl.c
@@ -0,0 +1,23 @@
+/* Wrapper for __scalblnl handles setting errno.
+   Copyright (C) 2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math_ldbl_opt.h>
+#undef weak_alias
+#define weak_alias(name, alias)
+#include <math/w_scalblnl.c>
+long_double_symbol (libm, __w_scalblnl, scalblnl);
diff --git a/sysdeps/ieee754/ldbl-64-128/s_scalblnl.c b/sysdeps/ieee754/ldbl-64-128/s_scalblnl.c
index 3143f18f6c..97181d29b9 100644
--- a/sysdeps/ieee754/ldbl-64-128/s_scalblnl.c
+++ b/sysdeps/ieee754/ldbl-64-128/s_scalblnl.c
@@ -2,8 +2,3 @@
 #undef weak_alias
 #define weak_alias(n,a)
 #include <sysdeps/ieee754/ldbl-128/s_scalblnl.c>
-#ifdef IS_IN_libm
-long_double_symbol (libm, __scalblnl, scalblnl);
-#else
-long_double_symbol (libc, __scalblnl, scalblnl);
-#endif
diff --git a/sysdeps/ieee754/ldbl-64-128/w_scalblnl.c b/sysdeps/ieee754/ldbl-64-128/w_scalblnl.c
new file mode 100644
index 0000000000..fc6c4cfd8e
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-64-128/w_scalblnl.c
@@ -0,0 +1,27 @@
+/* Wrapper for __scalblnl handles setting errno.
+   Copyright (C) 2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math_ldbl_opt.h>
+#undef weak_alias
+#define weak_alias(name, alias)
+#include <math/w_scalblnl.c>
+#ifdef IS_IN_libm
+long_double_symbol (libm, __w_scalblnl, scalblnl);
+#else
+long_double_symbol (libc, __w_scalblnl, scalblnl);
+#endif
diff --git a/sysdeps/ieee754/ldbl-96/s_scalblnl.c b/sysdeps/ieee754/ldbl-96/s_scalblnl.c
index 76a4c59e6b..fca8470cdc 100644
--- a/sysdeps/ieee754/ldbl-96/s_scalblnl.c
+++ b/sysdeps/ieee754/ldbl-96/s_scalblnl.c
@@ -58,4 +58,3 @@ __scalblnl (long double x, long int n)
 	SET_LDOUBLE_EXP(x,(es&0x8000)|k);
 	return x*twom63;
 }
-weak_alias (__scalblnl, scalblnl)