ldbl-128ibm-compat: Add strfmon_l with IEEE long double format

Similarly to what has been done for printf-like functions, more
specifically to the internal implementation in __vfprintf_internal, this
patch extends __vstrfmon_l_internal to deal with long double values with
binary128 format (as a third format option and reusing the float128
implementation).

Tested for powerpc64le, powerpc64, x86_64, and with build-many-glibcs.

Reviewed-by: Paul E. Murphy <murphyp@linux.ibm.com>

1 files changed, 35 insertions, 0 deletions

diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-strfmon_l.c b/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-strfmon_l.c
new file mode 100644
index 0000000000..b609c80ddc
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-strfmon_l.c
@@ -0,0 +1,35 @@
+/* Wrapper for strfmon_l.  IEEE128 version.
+   Copyright (C) 2019 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
+   <https://www.gnu.org/licenses/>.  */
+
+#include <monetary.h>
+#include <stdarg.h>
+#include <locale/localeinfo.h>
+
+ssize_t
+___ieee128_strfmon_l (char *s, size_t maxsize, locale_t loc, const char *format, ...)
+{
+  va_list ap;
+  ssize_t res;
+
+  va_start (ap, format);
+  res = __vstrfmon_l_internal (s, maxsize, loc,
+                               format, ap, STRFMON_LDBL_USES_FLOAT128);
+  va_end (ap);
+  return res;
+}
+weak_alias (___ieee128_strfmon_l, __strfmon_lieee128)