[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.

15 files changed, 70 insertions, 19 deletions

diff --git a/sysdeps/i386/fpu/s_scalbn.S b/sysdeps/i386/fpu/s_scalbn.S
index ea9e25f..548f19f 100644
--- a/sysdeps/i386/fpu/s_scalbn.S
+++ b/sysdeps/i386/fpu/s_scalbn.S
@@ -16,4 +16,3 @@ ENTRY(__scalbn)
 END (__scalbn)
 weak_alias (__scalbn, scalbn)
 strong_alias (__scalbn, __scalbln)
-weak_alias (__scalbn, scalbln)
diff --git a/sysdeps/i386/fpu/s_scalbnf.S b/sysdeps/i386/fpu/s_scalbnf.S
index dc8cfb4..fe6516e 100644
--- a/sysdeps/i386/fpu/s_scalbnf.S
+++ b/sysdeps/i386/fpu/s_scalbnf.S
@@ -16,4 +16,3 @@ ENTRY(__scalbnf)
 END (__scalbnf)
 weak_alias (__scalbnf, scalbnf)
 strong_alias (__scalbnf, __scalblnf)
-weak_alias (__scalbnf, scalblnf)
diff --git a/sysdeps/i386/fpu/s_scalbnl.S b/sysdeps/i386/fpu/s_scalbnl.S
index 295494b..8f65de4 100644
--- a/sysdeps/i386/fpu/s_scalbnl.S
+++ b/sysdeps/i386/fpu/s_scalbnl.S
@@ -17,4 +17,3 @@ ENTRY(__scalbnl)
 END (__scalbnl)
 weak_alias (__scalbnl, scalbnl)
 strong_alias (__scalbnl, __scalblnl)
-weak_alias (__scalbnl, scalblnl)
diff --git a/sysdeps/ia64/fpu/w_scalblnf.c b/sysdeps/ia64/fpu/w_scalblnf.c
new file mode 100644
index 0000000..6026b50
--- /dev/null
+++ b/sysdeps/ia64/fpu/w_scalblnf.c
@@ -0,0 +1,20 @@
+/* Wrapper for __scalblnf 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/>.  */
+
+/* Nothing to do.
+   The function scalblnf is used without the wrapper function.  */
diff --git a/sysdeps/ieee754/dbl-64/s_scalbln.c b/sysdeps/ieee754/dbl-64/s_scalbln.c
index 874b98e..32cd12e 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 c00db68..8dce51e 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 aa45164..ad3c586 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 f552393..1e24197 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 03d4597..0316352 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 0000000..24a5461
--- /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 3143f18..97181d2 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 0000000..fc6c4cf
--- /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 76a4c59..fca8470 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)
diff --git a/sysdeps/m68k/m680x0/fpu/s_scalbn.c b/sysdeps/m68k/m680x0/fpu/s_scalbn.c
index c56a9ff..f520f7d 100644
--- a/sysdeps/m68k/m680x0/fpu/s_scalbn.c
+++ b/sysdeps/m68k/m680x0/fpu/s_scalbn.c
@@ -47,4 +47,3 @@ __CONCATX(__scalbn,suffix) (x, exp)
 }
 weak_alias (__CONCATX(__scalbn,suffix), __CONCATX(scalbn,suffix))
 strong_alias (__CONCATX(__scalbn,suffix), __CONCATX(__scalbln,suffix))
-weak_alias (__CONCATX(__scalbn,suffix), __CONCATX(scalbln,suffix))
diff --git a/sysdeps/sparc/sparc64/soft-fp/s_scalblnl.c b/sysdeps/sparc/sparc64/soft-fp/s_scalblnl.c
index e07ff62..6d11a3d 100644
--- a/sysdeps/sparc/sparc64/soft-fp/s_scalblnl.c
+++ b/sysdeps/sparc/sparc64/soft-fp/s_scalblnl.c
@@ -50,5 +50,3 @@ long double __scalblnl(long double arg, int exp)
 
   return r;
 }
-
-weak_alias (__scalblnl, scalblnl)