1 files changed, 0 insertions, 67 deletions
diff --git a/pl/math/v_log1pf_inline.h b/pl/math/v_log1pf_inline.h
deleted file mode 100644
index c654c6bad08f..000000000000
--- a/pl/math/v_log1pf_inline.h
+++ /dev/null
@@ -1,67 +0,0 @@
-/*
- * Helper for single-precision routines which calculate log(1 + x) and do not
- * need special-case handling
- *
- * Copyright (c) 2022-2023, Arm Limited.
- * SPDX-License-Identifier: MIT OR Apache-2.0 WITH LLVM-exception
- */
-
-#ifndef PL_MATH_V_LOG1PF_INLINE_H
-#define PL_MATH_V_LOG1PF_INLINE_H
-
-#include "v_math.h"
-#include "poly_advsimd_f32.h"
-
-struct v_log1pf_data
-{
-  float32x4_t poly[8], ln2;
-  uint32x4_t four;
-  int32x4_t three_quarters;
-};
-
-/* Polynomial generated using FPMinimax in [-0.25, 0.5]. First two coefficients
-   (1, -0.5) are not stored as they can be generated more efficiently.  */
-#define V_LOG1PF_CONSTANTS_TABLE                                              \
-  {                                                                           \
-    .poly                                                                     \
-	= { V4 (0x1.5555aap-2f),  V4 (-0x1.000038p-2f), V4 (0x1.99675cp-3f),  \
-	    V4 (-0x1.54ef78p-3f), V4 (0x1.28a1f4p-3f),	V4 (-0x1.0da91p-3f),  \
-	    V4 (0x1.abcb6p-4f),	  V4 (-0x1.6f0d5ep-5f) },                     \
-	.ln2 = V4 (0x1.62e43p-1f), .four = V4 (0x40800000),                   \
-	.three_quarters = V4 (0x3f400000)                                     \
-  }
-
-static inline float32x4_t
-eval_poly (float32x4_t m, const float32x4_t *c)
-{
-  /* Approximate log(1+m) on [-0.25, 0.5] using pairwise Horner (main routine
-     uses split Estrin, but this way reduces register pressure in the calling
-     routine).  */
-  float32x4_t q = vfmaq_f32 (v_f32 (-0.5), m, c[0]);
-  float32x4_t m2 = vmulq_f32 (m, m);
-  q = vfmaq_f32 (m, m2, q);
-  float32x4_t p = v_pw_horner_6_f32 (m, m2, c + 1);
-  p = vmulq_f32 (m2, p);
-  return vfmaq_f32 (q, m2, p);
-}
-
-static inline float32x4_t
-log1pf_inline (float32x4_t x, const struct v_log1pf_data d)
-{
-  /* Helper for calculating log(x + 1). Copied from log1pf_2u1.c, with no
-     special-case handling. See that file for details of the algorithm.  */
-  float32x4_t m = vaddq_f32 (x, v_f32 (1.0f));
-  int32x4_t k
-      = vandq_s32 (vsubq_s32 (vreinterpretq_s32_f32 (m), d.three_quarters),
-		   v_s32 (0xff800000));
-  uint32x4_t ku = vreinterpretq_u32_s32 (k);
-  float32x4_t s = vreinterpretq_f32_u32 (vsubq_u32 (d.four, ku));
-  float32x4_t m_scale
-      = vreinterpretq_f32_u32 (vsubq_u32 (vreinterpretq_u32_f32 (x), ku));
-  m_scale = vaddq_f32 (m_scale, vfmaq_f32 (v_f32 (-1.0f), v_f32 (0.25f), s));
-  float32x4_t p = eval_poly (m_scale, d.poly);
-  float32x4_t scale_back = vmulq_f32 (vcvtq_f32_s32 (k), v_f32 (0x1.0p-23f));
-  return vfmaq_f32 (p, scale_back, d.ln2);
-}
-
-#endif //  PL_MATH_V_LOG1PF_INLINE_H