1 files changed, 82 insertions, 0 deletions
diff --git a/newlib/libm/machine/amdgcn/v64df_remainder.c b/newlib/libm/machine/amdgcn/v64df_remainder.c
new file mode 100644
index 000000000..01fda8e1b
--- /dev/null
+++ b/newlib/libm/machine/amdgcn/v64df_remainder.c
@@ -0,0 +1,82 @@
+/*
+ * Copyright 2023 Siemens
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions.  No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+
+/*
+ * ====================================================
+ * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
+ *
+ * Developed at SunPro, a Sun Microsystems, Inc. business.
+ * Permission to use, copy, modify, and distribute this
+ * software is freely granted, provided that this notice 
+ * is preserved.
+ * ====================================================
+ */
+
+/* Based on newlib/libm/mathfp/e_remainder.c in Newlib.  */
+
+#include "amdgcnmach.h"
+
+v64df v64df_fmod_aux (v64df, v64df, v64di);
+
+#if defined (__has_builtin) && __has_builtin (__builtin_gcn_fabsv)
+
+DEF_VD_MATH_FUNC (v64df, remainder, v64df x, v64df p)
+{
+  FUNCTION_INIT (v64df);
+
+  v64si hx, lx;
+  EXTRACT_WORDS (hx, lx, x);
+  v64si hp, lp;
+  EXTRACT_WORDS (hp, lp, p);
+  v64si sx = hx & 0x80000000;
+  hp &= 0x7fffffff;
+  hx &= 0x7fffffff;
+
+  /* purge off exception values */
+  VECTOR_RETURN ((x * p) / (x * p), ((hp | lp) == 0) | ((hx >= 0x7ff00000)
+                                        | /* x not finite */
+                                        ((hp >= 0x7ff00000) & /* p is NaN */
+                                         (((hp - 0x7ff00000) | lp) != 0))));
+
+  VECTOR_COND_MOVE (x, v64df_fmod_aux (x, p+p, __mask), hp <= 0x7fdfffff); // now x < 2p
+
+  VECTOR_RETURN (0.0 * x, ((hx-hp)|(lx-lp))==0);
+
+  x = __builtin_gcn_fabsv (x);
+  p = __builtin_gcn_fabsv (p);
+
+  VECTOR_IF (hp < 0x00200000, cond)
+    VECTOR_IF2 (x + x > p, cond2, __builtin_convertvector(cond, v64di))
+      VECTOR_COND_MOVE (x, x - p, cond2);
+      VECTOR_COND_MOVE (x, x - p, cond2 & (x + x >= p));
+    VECTOR_ENDIF
+  VECTOR_ELSE (cond)
+    v64df p_half = 0.5 * p;
+    VECTOR_IF2 (x > p_half, cond2, __builtin_convertvector(cond, v64di))
+      VECTOR_COND_MOVE (x, x - p, cond2);
+      VECTOR_COND_MOVE (x, x - p, cond2 & (x >= p_half));
+    VECTOR_ENDIF
+  VECTOR_ENDIF
+
+  GET_HIGH_WORD (hx, x, NO_COND);
+  SET_HIGH_WORD (x, hx ^ sx, NO_COND);
+
+  VECTOR_RETURN (x, NO_COND);
+
+  FUNCTION_RETURN;
+}
+
+DEF_VARIANTS2 (remainder, df, df)
+
+#endif