aarch64: Add vector implementations of tan routines

This includes some utility headers for evaluating polynomials using
various schemes.

19 files changed, 1248 insertions, 1 deletions

diff --git a/sysdeps/aarch64/fpu/Makefile b/sysdeps/aarch64/fpu/Makefile
index 04aa2e37ca..a1bbc9bcaa 100644
--- a/sysdeps/aarch64/fpu/Makefile
+++ b/sysdeps/aarch64/fpu/Makefile
@@ -1,7 +1,8 @@
 libmvec-supported-funcs = cos \
                           exp \
                           log \
-                          sin
+                          sin \
+                          tan
 
 float-advsimd-funcs = $(libmvec-supported-funcs)
 double-advsimd-funcs = $(libmvec-supported-funcs)
diff --git a/sysdeps/aarch64/fpu/Versions b/sysdeps/aarch64/fpu/Versions
index c85c0f3efb..f0ca0940a9 100644
--- a/sysdeps/aarch64/fpu/Versions
+++ b/sysdeps/aarch64/fpu/Versions
@@ -17,4 +17,10 @@ libmvec {
     _ZGVsMxv_sin;
     _ZGVsMxv_sinf;
   }
+  GLIBC_2.39 {
+    _ZGVnN4v_tanf;
+    _ZGVnN2v_tan;
+    _ZGVsMxv_tanf;
+    _ZGVsMxv_tan;
+  }
 }
diff --git a/sysdeps/aarch64/fpu/bits/math-vector.h b/sysdeps/aarch64/fpu/bits/math-vector.h
index 7c200599c1..6193213147 100644
--- a/sysdeps/aarch64/fpu/bits/math-vector.h
+++ b/sysdeps/aarch64/fpu/bits/math-vector.h
@@ -53,11 +53,13 @@ __vpcs __f32x4_t _ZGVnN4v_cosf (__f32x4_t);
 __vpcs __f32x4_t _ZGVnN4v_expf (__f32x4_t);
 __vpcs __f32x4_t _ZGVnN4v_logf (__f32x4_t);
 __vpcs __f32x4_t _ZGVnN4v_sinf (__f32x4_t);
+__vpcs __f32x4_t _ZGVnN4v_tanf (__f32x4_t);
 
 __vpcs __f64x2_t _ZGVnN2v_cos (__f64x2_t);
 __vpcs __f64x2_t _ZGVnN2v_exp (__f64x2_t);
 __vpcs __f64x2_t _ZGVnN2v_log (__f64x2_t);
 __vpcs __f64x2_t _ZGVnN2v_sin (__f64x2_t);
+__vpcs __f64x2_t _ZGVnN2v_tan (__f64x2_t);
 
 #  undef __ADVSIMD_VEC_MATH_SUPPORTED
 #endif /* __ADVSIMD_VEC_MATH_SUPPORTED */
@@ -68,11 +70,13 @@ __sv_f32_t _ZGVsMxv_cosf (__sv_f32_t, __sv_bool_t);
 __sv_f32_t _ZGVsMxv_expf (__sv_f32_t, __sv_bool_t);
 __sv_f32_t _ZGVsMxv_logf (__sv_f32_t, __sv_bool_t);
 __sv_f32_t _ZGVsMxv_sinf (__sv_f32_t, __sv_bool_t);
+__sv_f32_t _ZGVsMxv_tanf (__sv_f32_t, __sv_bool_t);
 
 __sv_f64_t _ZGVsMxv_cos (__sv_f64_t, __sv_bool_t);
 __sv_f64_t _ZGVsMxv_exp (__sv_f64_t, __sv_bool_t);
 __sv_f64_t _ZGVsMxv_log (__sv_f64_t, __sv_bool_t);
 __sv_f64_t _ZGVsMxv_sin (__sv_f64_t, __sv_bool_t);
+__sv_f64_t _ZGVsMxv_tan (__sv_f64_t, __sv_bool_t);
 
 #  undef __SVE_VEC_MATH_SUPPORTED
 #endif /* __SVE_VEC_MATH_SUPPORTED */
diff --git a/sysdeps/aarch64/fpu/poly_advsimd_f32.h b/sysdeps/aarch64/fpu/poly_advsimd_f32.h
new file mode 100644
index 0000000000..9e2ad9ad94
--- /dev/null
+++ b/sysdeps/aarch64/fpu/poly_advsimd_f32.h
@@ -0,0 +1,36 @@
+/* Helpers for evaluating polynomials on single-precision AdvSIMD input, using
+   various schemes.
+
+   Copyright (C) 2023 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/>.  */
+
+#ifndef AARCH64_FPU_POLY_ADVSIMD_F32_H
+#define AARCH64_FPU_POLY_ADVSIMD_F32_H
+
+#include <arm_neon.h>
+
+/* Wrap AdvSIMD f32 helpers: evaluation of some scheme/order has form:
+   v_[scheme]_[order]_f32.  */
+#define VTYPE float32x4_t
+#define FMA(x, y, z) vfmaq_f32 (z, x, y)
+#define VWRAP(f) v_##f##_f32
+#include "poly_generic.h"
+#undef VWRAP
+#undef FMA
+#undef VTYPE
+
+#endif
diff --git a/sysdeps/aarch64/fpu/poly_advsimd_f64.h b/sysdeps/aarch64/fpu/poly_advsimd_f64.h
new file mode 100644
index 0000000000..955cfc08ce
--- /dev/null
+++ b/sysdeps/aarch64/fpu/poly_advsimd_f64.h
@@ -0,0 +1,36 @@
+/* Helpers for evaluating polynomials on double-precision AdvSIMD input, using
+   various schemes.
+
+   Copyright (C) 2023 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/>.  */
+
+#ifndef AARCH64_FPU_POLY_ADVSIMD_F64_H
+#define AARCH64_FPU_POLY_ADVSIMD_F64_H
+
+#include <arm_neon.h>
+
+/* Wrap AdvSIMD f64 helpers: evaluation of some scheme/order has form:
+   v_[scheme]_[order]_f64.  */
+#define VTYPE float64x2_t
+#define FMA(x, y, z) vfmaq_f64 (z, x, y)
+#define VWRAP(f) v_##f##_f64
+#include "poly_generic.h"
+#undef VWRAP
+#undef FMA
+#undef VTYPE
+
+#endif
diff --git a/sysdeps/aarch64/fpu/poly_generic.h b/sysdeps/aarch64/fpu/poly_generic.h
new file mode 100644
index 0000000000..84f042182b
--- /dev/null
+++ b/sysdeps/aarch64/fpu/poly_generic.h
@@ -0,0 +1,285 @@
+/* Generic helpers for evaluating polynomials with various schemes.
+
+   Copyright (C) 2023 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/>.  */
+
+
+#ifndef VTYPE
+# error Cannot use poly_generic without defining VTYPE
+#endif
+#ifndef VWRAP
+# error Cannot use poly_generic without defining VWRAP
+#endif
+#ifndef FMA
+# error Cannot use poly_generic without defining FMA
+#endif
+
+static inline VTYPE VWRAP (pairwise_poly_3) (VTYPE x, VTYPE x2,
+					     const VTYPE *poly)
+{
+  /* At order 3, Estrin and Pairwise Horner are identical.  */
+  VTYPE p01 = FMA (poly[1], x, poly[0]);
+  VTYPE p23 = FMA (poly[3], x, poly[2]);
+  return FMA (p23, x2, p01);
+}
+
+static inline VTYPE VWRAP (estrin_4) (VTYPE x, VTYPE x2, VTYPE x4,
+				      const VTYPE *poly)
+{
+  VTYPE p03 = VWRAP (pairwise_poly_3) (x, x2, poly);
+  return FMA (poly[4], x4, p03);
+}
+static inline VTYPE VWRAP (estrin_5) (VTYPE x, VTYPE x2, VTYPE x4,
+				      const VTYPE *poly)
+{
+  VTYPE p03 = VWRAP (pairwise_poly_3) (x, x2, poly);
+  VTYPE p45 = FMA (poly[5], x, poly[4]);
+  return FMA (p45, x4, p03);
+}
+static inline VTYPE VWRAP (estrin_6) (VTYPE x, VTYPE x2, VTYPE x4,
+				      const VTYPE *poly)
+{
+  VTYPE p03 = VWRAP (pairwise_poly_3) (x, x2, poly);
+  VTYPE p45 = FMA (poly[5], x, poly[4]);
+  VTYPE p46 = FMA (poly[6], x2, p45);
+  return FMA (p46, x4, p03);
+}
+static inline VTYPE VWRAP (estrin_7) (VTYPE x, VTYPE x2, VTYPE x4,
+				      const VTYPE *poly)
+{
+  VTYPE p03 = VWRAP (pairwise_poly_3) (x, x2, poly);
+  VTYPE p47 = VWRAP (pairwise_poly_3) (x, x2, poly + 4);
+  return FMA (p47, x4, p03);
+}
+static inline VTYPE VWRAP (estrin_8) (VTYPE x, VTYPE x2, VTYPE x4, VTYPE x8,
+				      const VTYPE *poly)
+{
+  return FMA (poly[8], x8, VWRAP (estrin_7) (x, x2, x4, poly));
+}
+static inline VTYPE VWRAP (estrin_9) (VTYPE x, VTYPE x2, VTYPE x4, VTYPE x8,
+				      const VTYPE *poly)
+{
+  VTYPE p89 = FMA (poly[9], x, poly[8]);
+  return FMA (p89, x8, VWRAP (estrin_7) (x, x2, x4, poly));
+}
+static inline VTYPE VWRAP (estrin_10) (VTYPE x, VTYPE x2, VTYPE x4, VTYPE x8,
+				       const VTYPE *poly)
+{
+  VTYPE p89 = FMA (poly[9], x, poly[8]);
+  VTYPE p8_10 = FMA (poly[10], x2, p89);
+  return FMA (p8_10, x8, VWRAP (estrin_7) (x, x2, x4, poly));
+}
+static inline VTYPE VWRAP (estrin_11) (VTYPE x, VTYPE x2, VTYPE x4, VTYPE x8,
+				       const VTYPE *poly)
+{
+  VTYPE p8_11 = VWRAP (pairwise_poly_3) (x, x2, poly + 8);
+  return FMA (p8_11, x8, VWRAP (estrin_7) (x, x2, x4, poly));
+}
+static inline VTYPE VWRAP (estrin_12) (VTYPE x, VTYPE x2, VTYPE x4, VTYPE x8,
+				       const VTYPE *poly)
+{
+  return FMA (VWRAP (estrin_4) (x, x2, x4, poly + 8), x8,
+	      VWRAP (estrin_7) (x, x2, x4, poly));
+}
+static inline VTYPE VWRAP (estrin_13) (VTYPE x, VTYPE x2, VTYPE x4, VTYPE x8,
+				       const VTYPE *poly)
+{
+  return FMA (VWRAP (estrin_5) (x, x2, x4, poly + 8), x8,
+	      VWRAP (estrin_7) (x, x2, x4, poly));
+}
+static inline VTYPE VWRAP (estrin_14) (VTYPE x, VTYPE x2, VTYPE x4, VTYPE x8,
+				       const VTYPE *poly)
+{
+  return FMA (VWRAP (estrin_6) (x, x2, x4, poly + 8), x8,
+	      VWRAP (estrin_7) (x, x2, x4, poly));
+}
+static inline VTYPE VWRAP (estrin_15) (VTYPE x, VTYPE x2, VTYPE x4, VTYPE x8,
+				       const VTYPE *poly)
+{
+  return FMA (VWRAP (estrin_7) (x, x2, x4, poly + 8), x8,
+	      VWRAP (estrin_7) (x, x2, x4, poly));
+}
+static inline VTYPE VWRAP (estrin_16) (VTYPE x, VTYPE x2, VTYPE x4, VTYPE x8,
+				       VTYPE x16, const VTYPE *poly)
+{
+  return FMA (poly[16], x16, VWRAP (estrin_15) (x, x2, x4, x8, poly));
+}
+static inline VTYPE VWRAP (estrin_17) (VTYPE x, VTYPE x2, VTYPE x4, VTYPE x8,
+				       VTYPE x16, const VTYPE *poly)
+{
+  VTYPE p16_17 = FMA (poly[17], x, poly[16]);
+  return FMA (p16_17, x16, VWRAP (estrin_15) (x, x2, x4, x8, poly));
+}
+static inline VTYPE VWRAP (estrin_18) (VTYPE x, VTYPE x2, VTYPE x4, VTYPE x8,
+				       VTYPE x16, const VTYPE *poly)
+{
+  VTYPE p16_17 = FMA (poly[17], x, poly[16]);
+  VTYPE p16_18 = FMA (poly[18], x2, p16_17);
+  return FMA (p16_18, x16, VWRAP (estrin_15) (x, x2, x4, x8, poly));
+}
+static inline VTYPE VWRAP (estrin_19) (VTYPE x, VTYPE x2, VTYPE x4, VTYPE x8,
+				       VTYPE x16, const VTYPE *poly)
+{
+  VTYPE p16_19 = VWRAP (pairwise_poly_3) (x, x2, poly + 16);
+  return FMA (p16_19, x16, VWRAP (estrin_15) (x, x2, x4, x8, poly));
+}
+
+static inline VTYPE VWRAP (horner_3) (VTYPE x, const VTYPE *poly)
+{
+  VTYPE p = FMA (poly[3], x, poly[2]);
+  p = FMA (x, p, poly[1]);
+  p = FMA (x, p, poly[0]);
+  return p;
+}
+static inline VTYPE VWRAP (horner_4) (VTYPE x, const VTYPE *poly)
+{
+  VTYPE p = FMA (poly[4], x, poly[3]);
+  p = FMA (x, p, poly[2]);
+  p = FMA (x, p, poly[1]);
+  p = FMA (x, p, poly[0]);
+  return p;
+}
+static inline VTYPE VWRAP (horner_5) (VTYPE x, const VTYPE *poly)
+{
+  return FMA (x, VWRAP (horner_4) (x, poly + 1), poly[0]);
+}
+static inline VTYPE VWRAP (horner_6) (VTYPE x, const VTYPE *poly)
+{
+  return FMA (x, VWRAP (horner_5) (x, poly + 1), poly[0]);
+}
+static inline VTYPE VWRAP (horner_7) (VTYPE x, const VTYPE *poly)
+{
+  return FMA (x, VWRAP (horner_6) (x, poly + 1), poly[0]);
+}
+static inline VTYPE VWRAP (horner_8) (VTYPE x, const VTYPE *poly)
+{
+  return FMA (x, VWRAP (horner_7) (x, poly + 1), poly[0]);
+}
+static inline VTYPE VWRAP (horner_9) (VTYPE x, const VTYPE *poly)
+{
+  return FMA (x, VWRAP (horner_8) (x, poly + 1), poly[0]);
+}
+static inline VTYPE VWRAP (horner_10) (VTYPE x, const VTYPE *poly)
+{
+  return FMA (x, VWRAP (horner_9) (x, poly + 1), poly[0]);
+}
+static inline VTYPE VWRAP (horner_11) (VTYPE x, const VTYPE *poly)
+{
+  return FMA (x, VWRAP (horner_10) (x, poly + 1), poly[0]);
+}
+static inline VTYPE VWRAP (horner_12) (VTYPE x, const VTYPE *poly)
+{
+  return FMA (x, VWRAP (horner_11) (x, poly + 1), poly[0]);
+}
+
+static inline VTYPE VWRAP (pw_horner_4) (VTYPE x, VTYPE x2, const VTYPE *poly)
+{
+  VTYPE p01 = FMA (poly[1], x, poly[0]);
+  VTYPE p23 = FMA (poly[3], x, poly[2]);
+  VTYPE p;
+  p = FMA (x2, poly[4], p23);
+  p = FMA (x2, p, p01);
+  return p;
+}
+static inline VTYPE VWRAP (pw_horner_5) (VTYPE x, VTYPE x2, const VTYPE *poly)
+{
+  VTYPE p01 = FMA (poly[1], x, poly[0]);
+  VTYPE p23 = FMA (poly[3], x, poly[2]);
+  VTYPE p45 = FMA (poly[5], x, poly[4]);
+  VTYPE p;
+  p = FMA (x2, p45, p23);
+  p = FMA (x2, p, p01);
+  return p;
+}
+static inline VTYPE VWRAP (pw_horner_6) (VTYPE x, VTYPE x2, const VTYPE *poly)
+{
+  VTYPE p26 = VWRAP (pw_horner_4) (x, x2, poly + 2);
+  VTYPE p01 = FMA (poly[1], x, poly[0]);
+  return FMA (x2, p26, p01);
+}
+static inline VTYPE VWRAP (pw_horner_7) (VTYPE x, VTYPE x2, const VTYPE *poly)
+{
+  VTYPE p27 = VWRAP (pw_horner_5) (x, x2, poly + 2);
+  VTYPE p01 = FMA (poly[1], x, poly[0]);
+  return FMA (x2, p27, p01);
+}
+static inline VTYPE VWRAP (pw_horner_8) (VTYPE x, VTYPE x2, const VTYPE *poly)
+{
+  VTYPE p28 = VWRAP (pw_horner_6) (x, x2, poly + 2);
+  VTYPE p01 = FMA (poly[1], x, poly[0]);
+  return FMA (x2, p28, p01);
+}
+static inline VTYPE VWRAP (pw_horner_9) (VTYPE x, VTYPE x2, const VTYPE *poly)
+{
+  VTYPE p29 = VWRAP (pw_horner_7) (x, x2, poly + 2);
+  VTYPE p01 = FMA (poly[1], x, poly[0]);
+  return FMA (x2, p29, p01);
+}
+static inline VTYPE VWRAP (pw_horner_10) (VTYPE x, VTYPE x2, const VTYPE *poly)
+{
+  VTYPE p2_10 = VWRAP (pw_horner_8) (x, x2, poly + 2);
+  VTYPE p01 = FMA (poly[1], x, poly[0]);
+  return FMA (x2, p2_10, p01);
+}
+static inline VTYPE VWRAP (pw_horner_11) (VTYPE x, VTYPE x2, const VTYPE *poly)
+{
+  VTYPE p2_11 = VWRAP (pw_horner_9) (x, x2, poly + 2);
+  VTYPE p01 = FMA (poly[1], x, poly[0]);
+  return FMA (x2, p2_11, p01);
+}
+static inline VTYPE VWRAP (pw_horner_12) (VTYPE x, VTYPE x2, const VTYPE *poly)
+{
+  VTYPE p2_12 = VWRAP (pw_horner_10) (x, x2, poly + 2);
+  VTYPE p01 = FMA (poly[1], x, poly[0]);
+  return FMA (x2, p2_12, p01);
+}
+static inline VTYPE VWRAP (pw_horner_13) (VTYPE x, VTYPE x2, const VTYPE *poly)
+{
+  VTYPE p2_13 = VWRAP (pw_horner_11) (x, x2, poly + 2);
+  VTYPE p01 = FMA (poly[1], x, poly[0]);
+  return FMA (x2, p2_13, p01);
+}
+static inline VTYPE VWRAP (pw_horner_14) (VTYPE x, VTYPE x2, const VTYPE *poly)
+{
+  VTYPE p2_14 = VWRAP (pw_horner_12) (x, x2, poly + 2);
+  VTYPE p01 = FMA (poly[1], x, poly[0]);
+  return FMA (x2, p2_14, p01);
+}
+static inline VTYPE VWRAP (pw_horner_15) (VTYPE x, VTYPE x2, const VTYPE *poly)
+{
+  VTYPE p2_15 = VWRAP (pw_horner_13) (x, x2, poly + 2);
+  VTYPE p01 = FMA (poly[1], x, poly[0]);
+  return FMA (x2, p2_15, p01);
+}
+static inline VTYPE VWRAP (pw_horner_16) (VTYPE x, VTYPE x2, const VTYPE *poly)
+{
+  VTYPE p2_16 = VWRAP (pw_horner_14) (x, x2, poly + 2);
+  VTYPE p01 = FMA (poly[1], x, poly[0]);
+  return FMA (x2, p2_16, p01);
+}
+static inline VTYPE VWRAP (pw_horner_17) (VTYPE x, VTYPE x2, const VTYPE *poly)
+{
+  VTYPE p2_17 = VWRAP (pw_horner_15) (x, x2, poly + 2);
+  VTYPE p01 = FMA (poly[1], x, poly[0]);
+  return FMA (x2, p2_17, p01);
+}
+static inline VTYPE VWRAP (pw_horner_18) (VTYPE x, VTYPE x2, const VTYPE *poly)
+{
+  VTYPE p2_18 = VWRAP (pw_horner_16) (x, x2, poly + 2);
+  VTYPE p01 = FMA (poly[1], x, poly[0]);
+  return FMA (x2, p2_18, p01);
+}
diff --git a/sysdeps/aarch64/fpu/poly_sve_f32.h b/sysdeps/aarch64/fpu/poly_sve_f32.h
new file mode 100644
index 0000000000..dcf2fab8dd
--- /dev/null
+++ b/sysdeps/aarch64/fpu/poly_sve_f32.h
@@ -0,0 +1,38 @@
+/* Helpers for evaluating polynomials on single-precision SVE input, using
+   various schemes.
+
+   Copyright (C) 2023 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/>.  */
+
+#ifndef AARCH64_FPU_POLY_SVE_F32_H
+#define AARCH64_FPU_POLY_SVE_F32_H
+
+#include <arm_sve.h>
+
+/* Wrap SVE f32 helpers: evaluation of some scheme/order has form:
+   sv_[scheme]_[order]_f32_x.  */
+#define VTYPE svfloat32_t
+#define STYPE float
+#define VWRAP(f) sv_##f##_f32_x
+#define DUP svdup_n_f32
+#include "poly_sve_generic.h"
+#undef DUP
+#undef VWRAP
+#undef STYPE
+#undef VTYPE
+
+#endif
diff --git a/sysdeps/aarch64/fpu/poly_sve_f64.h b/sysdeps/aarch64/fpu/poly_sve_f64.h
new file mode 100644
index 0000000000..97a0b76637
--- /dev/null
+++ b/sysdeps/aarch64/fpu/poly_sve_f64.h
@@ -0,0 +1,38 @@
+/* Helpers for evaluating polynomials on double-precision SVE input, using
+   various schemes.
+
+   Copyright (C) 2023 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/>.  */
+
+#ifndef AARCH64_FPU_POLY_SVE_F64_H
+#define AARCH64_FPU_POLY_SVE_F64_H
+
+#include <arm_sve.h>
+
+/* Wrap SVE f64 helpers: evaluation of some scheme/order has form:
+   sv_[scheme]_[order]_f64_x.  */
+#define VTYPE svfloat64_t
+#define STYPE double
+#define VWRAP(f) sv_##f##_f64_x
+#define DUP svdup_n_f64
+#include "poly_sve_generic.h"
+#undef DUP
+#undef VWRAP
+#undef STYPE
+#undef VTYPE
+
+#endif
diff --git a/sysdeps/aarch64/fpu/poly_sve_generic.h b/sysdeps/aarch64/fpu/poly_sve_generic.h
new file mode 100644
index 0000000000..0ecf5ce45b
--- /dev/null
+++ b/sysdeps/aarch64/fpu/poly_sve_generic.h
@@ -0,0 +1,313 @@
+/* Helpers for evaluating polynomials with various schemes - specific to SVE
+   but precision-agnostic.</