1 files changed, 0 insertions, 86 deletions
diff --git a/pl/math/atanhf_3u1.c b/pl/math/atanhf_3u1.c
deleted file mode 100644
index e99d5a9900a9..000000000000
--- a/pl/math/atanhf_3u1.c
+++ /dev/null
@@ -1,86 +0,0 @@
-/*
- * Single-precision atanh(x) function.
- *
- * Copyright (c) 2022-2023, Arm Limited.
- * SPDX-License-Identifier: MIT OR Apache-2.0 WITH LLVM-exception
- */
-
-#include "math_config.h"
-#include "mathlib.h"
-#include "pl_sig.h"
-#include "pl_test.h"
-
-#define AbsMask 0x7fffffff
-#define Half 0x3f000000
-#define One 0x3f800000
-#define Four 0x40800000
-#define Ln2 0x1.62e43p-1f
-/* asuint(0x1p-12), below which atanhf(x) rounds to x.  */
-#define TinyBound 0x39800000
-
-#define C(i) __log1pf_data.coeffs[i]
-
-static inline float
-eval_poly (float m)
-{
-  /* Approximate log(1+m) on [-0.25, 0.5] using Estrin scheme.  */
-  float p_12 = fmaf (m, C (1), C (0));
-  float p_34 = fmaf (m, C (3), C (2));
-  float p_56 = fmaf (m, C (5), C (4));
-  float p_78 = fmaf (m, C (7), C (6));
-
-  float m2 = m * m;
-  float p_02 = fmaf (m2, p_12, m);
-  float p_36 = fmaf (m2, p_56, p_34);
-  float p_79 = fmaf (m2, C (8), p_78);
-
-  float m4 = m2 * m2;
-  float p_06 = fmaf (m4, p_36, p_02);
-
-  return fmaf (m4 * p_79, m4, p_06);
-}
-
-static inline float
-log1pf_inline (float x)
-{
-  /* Helper for calculating log(x + 1). Copied from log1pf_2u1.c, with no
-     special-case handling. See that file for details of the algorithm.  */
-  float m = x + 1.0f;
-  int k = (asuint (m) - 0x3f400000) & 0xff800000;
-  float s = asfloat (Four - k);
-  float m_scale = asfloat (asuint (x) - k) + fmaf (0.25f, s, -1.0f);
-  float p = eval_poly (m_scale);
-  float scale_back = (float) k * 0x1.0p-23f;
-  return fmaf (scale_back, Ln2, p);
-}
-
-/* Approximation for single-precision inverse tanh(x), using a simplified
-   version of log1p. Maximum error is 3.08 ULP:
-   atanhf(0x1.ff0d5p-5) got 0x1.ffb768p-5
-		       want 0x1.ffb76ep-5.  */
-float
-atanhf (float x)
-{
-  uint32_t ix = asuint (x);
-  uint32_t iax = ix & AbsMask;
-  uint32_t sign = ix & ~AbsMask;
-
-  if (unlikely (iax < TinyBound))
-    return x;
-
-  if (iax == One)
-    return __math_divzero (sign);
-
-  if (unlikely (iax > One))
-    return __math_invalidf (x);
-
-  float halfsign = asfloat (Half | sign);
-  float ax = asfloat (iax);
-  return halfsign * log1pf_inline ((2 * ax) / (1 - ax));
-}
-
-PL_SIG (S, F, 1, atanh, -1.0, 1.0)
-PL_TEST_ULP (atanhf, 2.59)
-PL_TEST_SYM_INTERVAL (atanhf, 0, 0x1p-12, 500)
-PL_TEST_SYM_INTERVAL (atanhf, 0x1p-12, 1, 200000)
-PL_TEST_SYM_INTERVAL (atanhf, 1, inf, 1000)