1 files changed, 48 insertions, 0 deletions
diff --git a/sysdeps/aarch64/fpu/hypotf_sve.c b/sysdeps/aarch64/fpu/hypotf_sve.c
new file mode 100644
index 0000000..3a403de
--- /dev/null
+++ b/sysdeps/aarch64/fpu/hypotf_sve.c
@@ -0,0 +1,48 @@
+/* Single-precision vector (SVE) hypot function
+
+   Copyright (C) 2024 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 "sv_math.h"
+
+#define TinyBound 0x0c800000 /* asuint (0x1p-102).  */
+#define Thres 0x73000000     /* 0x70000000 - TinyBound.  */
+
+static svfloat32_t NOINLINE
+special_case (svfloat32_t sqsum, svfloat32_t x, svfloat32_t y, svbool_t pg,
+	      svbool_t special)
+{
+  return sv_call2_f32 (hypotf, x, y, svsqrt_x (pg, sqsum), special);
+}
+
+/* SVE implementation of single-precision hypot.
+   Maximum error observed is 1.21 ULP:
+   _ZGVsMxvv_hypotf (0x1.6a213cp-19, -0x1.32b982p-26) got 0x1.6a2346p-19
+						     want 0x1.6a2344p-19.  */
+svfloat32_t SV_NAME_F2 (hypot) (svfloat32_t x, svfloat32_t y,
+				const svbool_t pg)
+{
+  svfloat32_t sqsum = svmla_x (pg, svmul_x (pg, x, x), y, y);
+
+  svbool_t special = svcmpge (
+      pg, svsub_x (pg, svreinterpret_u32 (sqsum), TinyBound), Thres);
+
+  if (__glibc_unlikely (svptest_any (pg, special)))
+    return special_case (sqsum, x, y, pg, special);
+
+  return svsqrt_x (pg, sqsum);
+}