[gcc] GCC 4.5.0=>4.5.1

gcc/mpfr/asin.c

Index: gcc/mpfr/asin.c
diff --git a/gcc/mpfr/asin.c b/gcc/mpfr/asin.c
deleted file mode 100644
index 4ad8d8d0953c0222f47b52a76fd63d2e8a431435..0000000000000000000000000000000000000000
--- a/gcc/mpfr/asin.c
+++ /dev/null
@@ -1,121 +0,0 @@
-/* mpfr_asin -- arc-sinus of a floating-point number
-
-Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
-Contributed by the Arenaire and Cacao projects, INRIA.
-
-This file is part of the GNU MPFR Library, and was contributed by Mathieu Dutour.
-
-The GNU MPFR Library is free software; you can redistribute it and/or modify
-it under the terms of the GNU Lesser General Public License as published by
-the Free Software Foundation; either version 2.1 of the License, or (at your
-option) any later version.
-
-The GNU MPFR Library is distributed in the hope that it will be useful, but
-WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
-or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
-License for more details.
-
-You should have received a copy of the GNU Lesser General Public License
-along with the GNU MPFR Library; see the file COPYING.LIB.  If not, write to
-the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
-MA 02110-1301, USA. */
-
-#include "mpfr-impl.h"
-
-int
-mpfr_asin (mpfr_ptr asin, mpfr_srcptr x, mp_rnd_t rnd_mode)
-{
-  mpfr_t xp;
-  int compared, inexact;
-  mp_prec_t prec;
-  mp_exp_t xp_exp;
-  MPFR_SAVE_EXPO_DECL (expo);
-  MPFR_ZIV_DECL (loop);
-
-  MPFR_LOG_FUNC (("x[%#R]=%R rnd=%d", x, x, rnd_mode),
-                 ("asin[%#R]=%R inexact=%d", asin, asin, inexact));
-
-  /* Special cases */
-  if (MPFR_UNLIKELY (MPFR_IS_SINGULAR (x)))
-    {
-      if (MPFR_IS_NAN (x) || MPFR_IS_INF (x))
-        {
-          MPFR_SET_NAN (asin);
-          MPFR_RET_NAN;
-        }
-      else /* x = 0 */
-        {
-          MPFR_ASSERTD (MPFR_IS_ZERO (x));
-          MPFR_SET_ZERO (asin);
-          MPFR_SET_SAME_SIGN (asin, x);
-          MPFR_RET (0); /* exact result */
-        }
-    }
-
-  /* asin(x) = x + x^3/6 + ... so the error is < 2^(3*EXP(x)-2) */
-  MPFR_FAST_COMPUTE_IF_SMALL_INPUT (asin, x, -2 * MPFR_GET_EXP (x), 2, 1,
-                                    rnd_mode, {});
-
-  /* Set x_p=|x| (x is a normal number) */
-  mpfr_init2 (xp, MPFR_PREC (x));
-  inexact = mpfr_abs (xp, x, GMP_RNDN);
-  MPFR_ASSERTD (inexact == 0);
-
-  compared = mpfr_cmp_ui (xp, 1);
-
-  if (MPFR_UNLIKELY (compared >= 0))
-    {
-      mpfr_clear (xp);
-      if (compared > 0)                  /* asin(x) = NaN for |x| > 1 */
-        {
-          MPFR_SET_NAN (asin);
-          MPFR_RET_NAN;
-        }
-      else                              /* x = 1 or x = -1 */
-        {
-          if (MPFR_IS_POS (x)) /* asin(+1) = Pi/2 */
-            inexact = mpfr_const_pi (asin, rnd_mode);
-          else /* asin(-1) = -Pi/2 */
-            {
-              inexact = -mpfr_const_pi (asin, MPFR_INVERT_RND(rnd_mode));
-              MPFR_CHANGE_SIGN (asin);
-            }
-          mpfr_div_2ui (asin, asin, 1, rnd_mode); /* May underflow */
-          return inexact;
-        }
-    }
-
-  MPFR_SAVE_EXPO_MARK (expo);
-
-  /* Compute exponent of 1 - ABS(x) */
-  mpfr_ui_sub (xp, 1, xp, GMP_RNDD);
-  MPFR_ASSERTD (MPFR_GET_EXP (xp) <= 0);
-  MPFR_ASSERTD (MPFR_GET_EXP (x) <= 0);
-  xp_exp = 2 - MPFR_GET_EXP (xp);
-
-  /* Set up initial prec */
-  prec = MPFR_PREC (asin) + 10 + xp_exp;
-
-  /* use asin(x) = atan(x/sqrt(1-x^2)) */
-  MPFR_ZIV_INIT (loop, prec);
-  for (;;)
-    {
-      mpfr_set_prec (xp, prec);
-      mpfr_sqr (xp, x, GMP_RNDN);
-      mpfr_ui_sub (xp, 1, xp, GMP_RNDN);
-      mpfr_sqrt (xp, xp, GMP_RNDN);
-      mpfr_div (xp, x, xp, GMP_RNDN);
-      mpfr_atan (xp, xp, GMP_RNDN);
-      if (MPFR_LIKELY (MPFR_CAN_ROUND (xp, prec - xp_exp,
-                                       MPFR_PREC (asin), rnd_mode)))
-        break;
-      MPFR_ZIV_NEXT (loop, prec);
-    }
-  MPFR_ZIV_FREE (loop);
-  inexact = mpfr_set (asin, xp, rnd_mode);
-
-  mpfr_clear (xp);
-
-  MPFR_SAVE_EXPO_FREE (expo);
-  return mpfr_check_range (asin, inexact, rnd_mode);
-}