1 files changed, 0 insertions, 63 deletions
diff --git a/pl/math/sinh_3u.c b/pl/math/sinh_3u.c
deleted file mode 100644
index 1d86629ee2a3..000000000000
--- a/pl/math/sinh_3u.c
+++ /dev/null
@@ -1,63 +0,0 @@
-/*
- * Double-precision sinh(x) function.
- *
- * Copyright (c) 2022-2023, Arm Limited.
- * SPDX-License-Identifier: MIT OR Apache-2.0 WITH LLVM-exception
- */
-
-#include "math_config.h"
-#include "pl_sig.h"
-#include "pl_test.h"
-
-#define AbsMask 0x7fffffffffffffff
-#define Half 0x3fe0000000000000
-#define OFlowBound                                                             \
-  0x40862e42fefa39f0 /* 0x1.62e42fefa39fp+9, above which using expm1 results   \
-			in NaN.  */
-
-double
-__exp_dd (double, double);
-
-/* Approximation for double-precision sinh(x) using expm1.
-   sinh(x) = (exp(x) - exp(-x)) / 2.
-   The greatest observed error is 2.57 ULP:
-   __v_sinh(0x1.9fb1d49d1d58bp-2) got 0x1.ab34e59d678dcp-2
-				 want 0x1.ab34e59d678d9p-2.  */
-double
-sinh (double x)
-{
-  uint64_t ix = asuint64 (x);
-  uint64_t iax = ix & AbsMask;
-  double ax = asdouble (iax);
-  uint64_t sign = ix & ~AbsMask;
-  double halfsign = asdouble (Half | sign);
-
-  if (unlikely (iax >= OFlowBound))
-    {
-      /* Special values and overflow.  */
-      if (unlikely (iax > 0x7ff0000000000000))
-	return __math_invalidf (x);
-      /* expm1 overflows a little before sinh. We have to fill this
-	 gap by using a different algorithm, in this case we use a
-	 double-precision exp helper. For large x sinh(x) is dominated
-	 by exp(x), however we cannot compute exp without overflow
-	 either. We use the identity: exp(a) = (exp(a / 2)) ^ 2
-	 to compute sinh(x) ~= (exp(|x| / 2)) ^ 2 / 2    for x > 0
-			    ~= (exp(|x| / 2)) ^ 2 / -2   for x < 0.  */
-      double e = __exp_dd (ax / 2, 0);
-      return (e * halfsign) * e;
-    }
-
-  /* Use expm1f to retain acceptable precision for small numbers.
-     Let t = e^(|x|) - 1.  */
-  double t = expm1 (ax);
-  /* Then sinh(x) = (t + t / (t + 1)) / 2   for x > 0
-		    (t + t / (t + 1)) / -2  for x < 0.  */
-  return (t + t / (t + 1)) * halfsign;
-}
-
-PL_SIG (S, D, 1, sinh, -10.0, 10.0)
-PL_TEST_ULP (sinh, 2.08)
-PL_TEST_SYM_INTERVAL (sinh, 0, 0x1p-51, 100)
-PL_TEST_SYM_INTERVAL (sinh, 0x1p-51, 0x1.62e42fefa39fp+9, 100000)
-PL_TEST_SYM_INTERVAL (sinh, 0x1.62e42fefa39fp+9, inf, 1000)