1 files changed, 35 insertions, 0 deletions
diff --git a/math/s_fmaximum_mag_template.c b/math/s_fmaximum_mag_template.c
new file mode 100644
index 0000000000..7e9a020344
--- /dev/null
+++ b/math/s_fmaximum_mag_template.c
@@ -0,0 +1,35 @@
+/* Return value with maximum magnitude.
+   Copyright (C) 2016-2021 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 <math.h>
+
+FLOAT
+M_DECL_FUNC (__fmaximum_mag) (FLOAT x, FLOAT y)
+{
+  FLOAT ax = M_FABS (x);
+  FLOAT ay = M_FABS (y);
+  if (isgreater (ax, ay))
+    return x;
+  else if (isless (ax, ay))
+    return y;
+  else if (ax == ay)
+    return (M_COPYSIGN (1, x) >= M_COPYSIGN (1, y) ? x : y);
+  else
+    return x + y;
+}
+declare_mgen_alias (__fmaximum_mag, fmaximum_mag);