Snap for 10447354 from 172d24a7ae67ee7bae413d5a8618f1b5edc002be to mainline-tethering-releaseaml_tet_341712060aml_tet_341610020aml_tet_341511010aml_tet_341411060aml_tet_341310230aml_tet_341112070aml_tet_341010040aml_tet_340913030android14-mainline-tethering-release

Change-Id: I3d1ba62dd3ec4f1f932ef5e2ce24308402f6b85d

1 files changed, 38 insertions, 0 deletions

diff --git a/pl/math/erfcf.h b/pl/math/erfcf.h
new file mode 100644
index 0000000..8f1e5f4
--- /dev/null
+++ b/pl/math/erfcf.h
@@ -0,0 +1,38 @@
+/*
+ * Shared functions for scalar and vector single-precision erfc(x) functions.
+ *
+ * Copyright (c) 2021-2023, Arm Limited.
+ * SPDX-License-Identifier: MIT OR Apache-2.0 WITH LLVM-exception
+ */
+
+#ifndef PL_MATH_ERFCF_H
+#define PL_MATH_ERFCF_H
+
+#include "math_config.h"
+
+#define FMA fma
+#include "estrin_wrap.h"
+
+/* Accurate exponential from optimized-routines.  */
+double
+__exp_dd (double x, double xtail);
+
+static inline double
+eval_poly (double z, const double *coeff)
+{
+  double z2 = z * z;
+  double z4 = z2 * z2;
+  double z8 = z4 * z4;
+#define C(i) coeff[i]
+  return ESTRIN_15 (z, z2, z4, z8, C);
+#undef C
+}
+
+static inline double
+eval_exp_mx2 (double x)
+{
+  return __exp_dd (-(x * x), 0.0);
+}
+
+#undef FMA
+#endif // PL_MATH_ERFCF_H