1 files changed, 56 insertions, 0 deletions
diff --git a/sysdeps/ieee754/soft-fp/s_fadd.c b/sysdeps/ieee754/soft-fp/s_fadd.c
new file mode 100644
index 0000000000..606e527300
--- /dev/null
+++ b/sysdeps/ieee754/soft-fp/s_fadd.c
@@ -0,0 +1,56 @@
+/* Add double values, narrowing the result to float, using soft-fp.
+   Copyright (C) 2018 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 f32addf64 __hide_f32addf64
+#define f32addf32x __hide_f32addf32x
+#define faddl __hide_faddl
+#include <math.h>
+#undef f32addf64
+#undef f32addf32x
+#undef faddl
+
+#include <math-narrow.h>
+#include <soft-fp.h>
+#include <single.h>
+#include <double.h>
+
+float
+__fadd (double x, double y)
+{
+  FP_DECL_EX;
+  FP_DECL_D (X);
+  FP_DECL_D (Y);
+  FP_DECL_D (R);
+  FP_DECL_S (RN);
+  float ret;
+
+  FP_INIT_ROUNDMODE;
+  FP_UNPACK_SEMIRAW_D (X, x);
+  FP_UNPACK_SEMIRAW_D (Y, y);
+  FP_ADD_D (R, X, Y);
+#if _FP_W_TYPE_SIZE < _FP_FRACBITS_D
+  FP_TRUNC (S, D, 1, 2, RN, R);
+#else
+  FP_TRUNC (S, D, 1, 1, RN, R);
+#endif
+  FP_PACK_SEMIRAW_S (ret, RN);
+  FP_HANDLE_EXCEPTIONS;
+  CHECK_NARROW_ADD (ret, x, y);
+  return ret;
+}
+libm_alias_float_double (add)