diff --git a/sysdeps/s390/fpu/math_private.h b/sysdeps/s390/fpu/math_private.h
new file mode 100644
index 0000000000..a1ae91a87c
--- /dev/null
+++ b/sysdeps/s390/fpu/math_private.h
@@ -0,0 +1,53 @@
+/* Configure optimized libm functions. S390 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
+ . */
+
+#ifndef S390_MATH_PRIVATE_H
+#define S390_MATH_PRIVATE_H 1
+
+#include
+#include
+
+#ifdef HAVE_S390_MIN_Z196_ZARCH_ASM_SUPPORT
+# define TOINT_INTRINSICS 1
+
+static inline double_t
+roundtoint (double_t x)
+{
+ double_t y;
+ /* The z196 zarch "load fp integer" (fidbra) instruction is rounding
+ x to the nearest integer with ties away from zero (M3-field: 1)
+ where inexact exceptions are suppressed (M4-field: 4). */
+ __asm__ ("fidbra %0,1,%1,4" : "=f" (y) : "f" (x));
+ return y;
+}
+
+static inline int32_t
+converttoint (double_t x)
+{
+ int32_t y;
+ /* The z196 zarch "convert to fixed" (cfdbra) instruction is rounding
+ x to the nearest integer with ties away from zero (M3-field: 1)
+ where inexact exceptions are suppressed (M4-field: 4). */
+ __asm__ ("cfdbra %0,1,%1,4" : "=d" (y) : "f" (x) : "cc");
+ return y;
+}
+#endif
+
+#include_next
+
+#endif