1 files changed, 0 insertions, 128 deletions
diff --git a/math/v_exp.c b/math/v_exp.c
deleted file mode 100644
index da23fd1c5f46..000000000000
--- a/math/v_exp.c
+++ /dev/null
@@ -1,128 +0,0 @@
-/*
- * Double-precision vector e^x function.
- *
- * Copyright (c) 2019-2022, Arm Limited.
- * SPDX-License-Identifier: MIT OR Apache-2.0 WITH LLVM-exception
- */
-
-#include "mathlib.h"
-#include "v_math.h"
-#if V_SUPPORTED
-#include "v_exp.h"
-
-#if V_EXP_TABLE_BITS == 7
-/* maxerr: 1.88 +0.5 ulp
-   rel error: 1.4337*2^-53
-   abs error: 1.4299*2^-53 in [ -ln2/256, ln2/256 ].  */
-#define C1 v_f64 (0x1.ffffffffffd43p-2)
-#define C2 v_f64 (0x1.55555c75adbb2p-3)
-#define C3 v_f64 (0x1.55555da646206p-5)
-#define InvLn2 v_f64 (0x1.71547652b82fep7) /* N/ln2.  */
-#define Ln2hi v_f64 (0x1.62e42fefa39efp-8) /* ln2/N.  */
-#define Ln2lo v_f64 (0x1.abc9e3b39803f3p-63)
-#elif V_EXP_TABLE_BITS == 8
-/* maxerr: 0.54 +0.5 ulp
-   rel error: 1.4318*2^-58
-   abs error: 1.4299*2^-58 in [ -ln2/512, ln2/512 ].  */
-#define C1 v_f64 (0x1.fffffffffffd4p-2)
-#define C2 v_f64 (0x1.5555571d6b68cp-3)
-#define C3 v_f64 (0x1.5555576a59599p-5)
-#define InvLn2 v_f64 (0x1.71547652b82fep8)
-#define Ln2hi v_f64 (0x1.62e42fefa39efp-9)
-#define Ln2lo v_f64 (0x1.abc9e3b39803f3p-64)
-#endif
-
-#define N (1 << V_EXP_TABLE_BITS)
-#define Tab __v_exp_data
-#define IndexMask v_u64 (N - 1)
-#define Shift v_f64 (0x1.8p+52)
-
-#if WANT_SIMD_EXCEPT
-
-#define TinyBound 0x200 /* top12 (asuint64 (0x1p-511)).  */
-#define BigBound 0x408	/* top12 (asuint64 (0x1p9)).  */
-
-VPCS_ATTR static NOINLINE v_f64_t
-specialcase (v_f64_t x, v_f64_t y, v_u64_t cmp)
-{
-  /* If fenv exceptions are to be triggered correctly, fall back to the scalar
-     routine to special lanes.  */
-  return v_call_f64 (exp, x, y, cmp);
-}
-
-#else
-
-#define Thres v_f64 (704.0)
-
-VPCS_ATTR
-static v_f64_t
-specialcase (v_f64_t s, v_f64_t y, v_f64_t n)
-{
-  v_f64_t absn = v_abs_f64 (n);
-
-  /* 2^(n/N) may overflow, break it up into s1*s2.  */
-  v_u64_t b = v_cond_u64 (n <= v_f64 (0.0)) & v_u64 (0x6000000000000000);
-  v_f64_t s1 = v_as_f64_u64 (v_u64 (0x7000000000000000) - b);
-  v_f64_t s2 = v_as_f64_u64 (v_as_u64_f64 (s) - v_u64 (0x3010000000000000) + b);
-  v_u64_t cmp = v_cond_u64 (absn > v_f64 (1280.0 * N));
-  v_f64_t r1 = s1 * s1;
-  v_f64_t r0 = v_fma_f64 (y, s2, s2) * s1;
-  return v_as_f64_u64 ((cmp & v_as_u64_f64 (r1)) | (~cmp & v_as_u64_f64 (r0)));
-}
-
-#endif
-
-VPCS_ATTR
-v_f64_t
-V_NAME(exp) (v_f64_t x)
-{
-  v_f64_t n, r, r2, s, y, z;
-  v_u64_t cmp, u, e, i;
-
-#if WANT_SIMD_EXCEPT
-  /* If any lanes are special, mask them with 1 and retain a copy of x to allow
-     specialcase to fix special lanes later. This is only necessary if fenv
-     exceptions are to be triggered correctly.  */
-  v_f64_t xm = x;
-  cmp = v_cond_u64 ((v_as_u64_f64 (v_abs_f64 (x)) >> 52) - TinyBound
-		    >= BigBound - TinyBound);
-  if (unlikely (v_any_u64 (cmp)))
-    x = v_sel_f64 (cmp, v_f64 (1), x);
-#else
-  cmp = v_cond_u64 (v_abs_f64 (x) > Thres);
-#endif
-
-  /* n = round(x/(ln2/N)).  */
-  z = v_fma_f64 (x, InvLn2, Shift);
-  u = v_as_u64_f64 (z);
-  n = z - Shift;
-
-  /* r = x - n*ln2/N.  */
-  r = x;
-  r = v_fma_f64 (-Ln2hi, n, r);
-  r = v_fma_f64 (-Ln2lo, n, r);
-
-  e = u << (52 - V_EXP_TABLE_BITS);
-  i = u & IndexMask;
-
-  /* y = exp(r) - 1 ~= r + C1 r^2 + C2 r^3 + C3 r^4.  */
-  r2 = r * r;
-  y = v_fma_f64 (C2, r, C1);
-  y = v_fma_f64 (C3, r2, y);
-  y = v_fma_f64 (y, r2, r);
-
-  /* s = 2^(n/N).  */
-  u = v_lookup_u64 (Tab, i);
-  s = v_as_f64_u64 (u + e);
-
-  if (unlikely (v_any_u64 (cmp)))
-#if WANT_SIMD_EXCEPT
-    return specialcase (xm, v_fma_f64 (y, s, s), cmp);
-#else
-    return specialcase (s, y, n);
-#endif
-
-  return v_fma_f64 (y, s, s);
-}
-VPCS_ALIAS
-#endif