Relocate alpha from ports to libc

Also fixed the following whitespace nits to satisfy the push:

sysdeps/alpha/alphaev6/memset.S:142: space before tab in indent.
sysdeps/alpha/configure:1: new blank line at EOF.
sysdeps/alpha/fpu/e_sqrt.c:126: space before tab in indent.
sysdeps/alpha/preconfigure:1: new blank line at EOF.
sysdeps/unix/sysv/linux/alpha/syscalls.list:1: new blank line at EOF.

1 files changed, 41 insertions, 0 deletions

diff --git a/sysdeps/alpha/fpu/cargf.c b/sysdeps/alpha/fpu/cargf.c
new file mode 100644
index 0000000000..46a67ce228
--- /dev/null
+++ b/sysdeps/alpha/fpu/cargf.c
@@ -0,0 +1,41 @@
+/* Compute argument of complex float value.
+   Copyright (C) 2004-2014 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/>.  */
+
+#define __cargf __cargf_not_defined
+#define cargf cargf_not_defined
+
+#include <complex.h>
+#include <math.h>
+#include "cfloat-compat.h"
+
+#undef __cargf
+#undef cargf
+
+float
+__c1_cargf (c1_cfloat_decl (x))
+{
+  return __atan2f (c1_cfloat_imag (x), c1_cfloat_real (x));
+}
+
+float
+__c2_cargf (c2_cfloat_decl (x))
+{
+  return __atan2f (c2_cfloat_imag (x), c2_cfloat_real (x));
+}
+
+cfloat_versions (cargf);