[gcc] GCC 4.5.0=>4.5.1

gcc/mpfr/set_ld.c

Index: gcc/mpfr/set_ld.c
diff --git a/gcc/mpfr/set_ld.c b/gcc/mpfr/set_ld.c
deleted file mode 100644
index 39e0eb25b0acbf80a09d7a1807de9e8a4ed3d947..0000000000000000000000000000000000000000
--- a/gcc/mpfr/set_ld.c
+++ /dev/null
@@ -1,321 +0,0 @@
-/* mpfr_set_ld -- convert a machine long double to
-                  a multiple precision floating-point number
-
-Copyright 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.
-
-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 <float.h>
-
-#define MPFR_NEED_LONGLONG_H
-#include "mpfr-impl.h"
-
-/* Various i386 systems have been seen with float.h LDBL constants equal to
-   the DBL ones, whereas they ought to be bigger, reflecting the 10-byte
-   IEEE extended format on that processor.  gcc 3.2.1 on FreeBSD and Solaris
-   has been seen with the problem, and gcc 2.95.4 on FreeBSD 4.7.  */
-
-#if HAVE_LDOUBLE_IEEE_EXT_LITTLE
-static const struct {
-  char         bytes[10];
-  long double  dummy;  /* for memory alignment */
-} ldbl_max_struct = {
-  { '\377','\377','\377','\377',
-    '\377','\377','\377','\377',
-    '\376','\177' }, 0.0
-};
-#define MPFR_LDBL_MAX   (* (const long double *) ldbl_max_struct.bytes)
-#else
-#define MPFR_LDBL_MAX   LDBL_MAX
-#endif
-
-#ifndef HAVE_LDOUBLE_IEEE_EXT_LITTLE
-
-/* Generic code */
-int
-mpfr_set_ld (mpfr_ptr r, long double d, mp_rnd_t rnd_mode)
-{
-  mpfr_t t, u;
-  int inexact, shift_exp;
-  long double x;
-  MPFR_SAVE_EXPO_DECL (expo);
-
-  /* Check for NAN */
-  LONGDOUBLE_NAN_ACTION (d, goto nan);
-
-  /* Check for INF */
-  if (d > MPFR_LDBL_MAX)
-    {
-      mpfr_set_inf (r, 1);
-      return 0;
-    }
-  else if (d < -MPFR_LDBL_MAX)
-    {
-      mpfr_set_inf (r, -1);
-      return 0;
-    }
-  /* Check for ZERO */
-  else if (d == 0.0)
-    return mpfr_set_d (r, (double) d, rnd_mode);
-
-  mpfr_init2 (t, MPFR_LDBL_MANT_DIG);
-  mpfr_init2 (u, IEEE_DBL_MANT_DIG);
-
-  MPFR_SAVE_EXPO_MARK (expo);
-
- convert:
-  x = d;
-  MPFR_SET_ZERO (t);  /* The sign doesn't matter. */
-  shift_exp = 0; /* invariant: remainder to deal with is d*2^shift_exp */
-  while (x != (long double) 0.0)
-    {
-      /* Check overflow of double */
-      if (x > (long double) DBL_MAX || (-x) > (long double) DBL_MAX)
-        {
-          long double div9, div10, div11, div12, div13;
-
-#define TWO_64 18446744073709551616.0 /* 2^64 */
-#define TWO_128 (TWO_64 * TWO_64)
-#define TWO_256 (TWO_128 * TWO_128)
-          div9 = (long double) (double) (TWO_256 * TWO_256); /* 2^(2^9) */
-          div10 = div9 * div9;
-          div11 = div10 * div10; /* 2^(2^11) */
-          div12 = div11 * div11; /* 2^(2^12) */
-          div13 = div12 * div12; /* 2^(2^13) */
-          if (ABS (x) >= div13)
-            {
-              x /= div13; /* exact */
-              shift_exp += 8192;
-            }
-          if (ABS (x) >= div12)
-            {
-              x /= div12; /* exact */
-              shift_exp += 4096;
-            }
-          if (ABS (x) >= div11)
-            {
-              x /= div11; /* exact */
-              shift_exp += 2048;
-            }
-          if (ABS (x) >= div10)
-            {
-              x /= div10; /* exact */
-              shift_exp += 1024;
-            }
-          /* warning: we may have DBL_MAX=2^1024*(1-2^(-53)) < x < 2^1024,
-             therefore we have one extra exponent reduction step */
-          if (ABS (x) >= div9)
-            {
-              x /= div9; /* exact */
-              shift_exp += 512;
-            }
-        } /* Check overflow of double */
-      else
-        {
-          long double div9, div10, div11;
-
-          div9 = (long double) (double) 7.4583407312002067432909653e-155;
-          /* div9 = 2^(-2^9) */
-          div10 = div9  * div9;  /* 2^(-2^10) */
-          div11 = div10 * div10; /* 2^(-2^11) if extended precision */
-          /* since -DBL_MAX <= x <= DBL_MAX, the cast to double should not
-             overflow here */
-          if (ABS(x) < div10 &&
-              div11 != (long double) 0.0 &&
-              div11 / div10 == div10) /* possible underflow */
-            {
-              long double div12, div13;
-              /* After the divisions, any bit of x must be >= div10,
-                 hence the possible division by div9. */
-              div12 = div11 * div11; /* 2^(-2^12) */
-              div13 = div12 * div12; /* 2^(-2^13) */
-              if (ABS (x) <= div13)
-                {
-                  x /= div13; /* exact */
-                  shift_exp -= 8192;
-                }
-              if (ABS (x) <= div12)
-                {
-                  x /= div12; /* exact */
-                  shift_exp -= 4096;
-                }
-              if (ABS (x) <= div11)
-                {
-                  x /= div11; /* exact */
-                  shift_exp -= 2048;
-                }
-              if (ABS (x) <= div10)
-                {
-                  x /= div10; /* exact */
-                  shift_exp -= 1024;
-                }
-              if (ABS(x) <= div9)
-                {
-                  x /= div9;  /* exact */
-                  shift_exp -= 512;
-                }
-            }
-          else
-            {
-              inexact = mpfr_set_d (u, (double) x, GMP_RNDZ);
-              MPFR_ASSERTD (inexact == 0);
-              if (mpfr_add (t, t, u, GMP_RNDZ) != 0)
-                {
-                  if (!mpfr_number_p (t))
-                    break;
-                  /* Inexact. This cannot happen unless the C implementation
-                     "lies" on the precision or when long doubles are
-                     implemented with FP expansions like under Mac OS X. */
-                  if (MPFR_PREC (t) != MPFR_PREC (r) + 1)
-                    {
-                      /* We assume that MPFR_PREC (r) < MPFR_PREC_MAX.
-                         The precision MPFR_PREC (r) + 1 allows us to
-                         deduce the rounding bit and the sticky bit. */
-                      mpfr_set_prec (t, MPFR_PREC (r) + 1);
-                      goto convert;
-                    }
-                  else
-                    {
-                      mp_limb_t *tp;
-                      int rb_mask;
-
-                      /* Since mpfr_add was inexact, the sticky bit is 1. */
-                      tp = MPFR_MANT (t);
-                      rb_mask = MPFR_LIMB_ONE <<
-                        (BITS_PER_MP_LIMB - 1 -
-                         (MPFR_PREC (r) & (BITS_PER_MP_LIMB - 1)));
-                      if (rnd_mode == GMP_RNDN)
-                        rnd_mode = (*tp & rb_mask) ^ MPFR_IS_NEG (t) ?
-                          GMP_RNDU : GMP_RNDD;
-                      *tp |= rb_mask;
-                      break;
-                    }
-                }
-              x -= (long double) mpfr_get_d1 (u); /* exact */
-            }
-        }
-    }
-  inexact = mpfr_mul_2si (r, t, shift_exp, rnd_mode);
-  mpfr_clear (t);
-  mpfr_clear (u);
-
-  MPFR_SAVE_EXPO_FREE (expo);
-  return mpfr_check_range (r, inexact, rnd_mode);
-
- nan:
-  MPFR_SET_NAN(r);
-  MPFR_RET_NAN;
-}
-
-#else /* IEEE Extended Little Endian Code */
-
-int
-mpfr_set_ld (mpfr_ptr r, long double d, mp_rnd_t rnd_mode)
-{
-  int inexact, i, k, cnt;
-  mpfr_t tmp;
-  mp_limb_t tmpmant[MPFR_LIMBS_PER_LONG_DOUBLE];
-  mpfr_long_double_t x;
-  mp_exp_t exp;
-  int signd;
-  MPFR_SAVE_EXPO_DECL (expo);
-
-  /* Check for NAN */
-  if (MPFR_UNLIKELY (d != d))
-    {
-      MPFR_SET_NAN (r);
-      MPFR_RET_NAN;
-    }
-  /* Check for INF */
-  else if (MPFR_UNLIKELY (d > MPFR_LDBL_MAX))
-    {
-      MPFR_SET_INF (r);
-      MPFR_SET_POS (r);
-      return 0;
-    }
-  else if (MPFR_UNLIKELY (d < -MPFR_LDBL_MAX))
-    {
-      MPFR_SET_INF (r);
-      MPFR_SET_NEG (r);
-      return 0;
-    }
-  /* Check for ZERO */
-  else if (MPFR_UNLIKELY (d == 0.0))
-    {
-      x.ld = d;
-      MPFR_SET_ZERO (r);
-      if (x.s.sign == 1)
-        MPFR_SET_NEG(r);
-      else
-        MPFR_SET_POS(r);
-      return 0;
-    }
-
-  /* now d is neither 0, nor NaN nor Inf */
-  MPFR_SAVE_EXPO_MARK (expo);
-
-  MPFR_MANT (tmp) = tmpmant;
-  MPFR_PREC (tmp) = 64;
-
-  /* Extract sign */
-  x.ld = d;
-  signd = MPFR_SIGN_POS;
-  if (x.ld < 0.0)
-    {
-      signd = MPFR_SIGN_NEG;
-      x.ld = -x.ld;
-    }
-
-  /* Extract mantissa */
-#if BITS_PER_MP_LIMB >= 64
-  tmpmant[0] = ((mp_limb_t) x.s.manh << 32) | ((mp_limb_t) x.s.manl);
-#else
-  tmpmant[0] = (mp_limb_t) x.s.manl;
-  tmpmant[1] = (mp_limb_t) x.s.manh;
-#endif
-
-  /* Normalize mantissa */
-  i = MPFR_LIMBS_PER_LONG_DOUBLE;
-  MPN_NORMALIZE_NOT_ZERO (tmpmant, i);
-  k = MPFR_LIMBS_PER_LONG_DOUBLE - i;
-  count_leading_zeros (cnt, tmpmant[i - 1]);
-  if (MPFR_LIKELY (cnt != 0))
-    mpn_lshift (tmpmant + k, tmpmant, i, cnt);
-  else if (k != 0)
-    MPN_COPY (tmpmant + k, tmpmant, i);
-  if (MPFR_UNLIKELY (k != 0))
-    MPN_ZERO (tmpmant, k);
-
-  /* Set exponent */
-  exp = (mp_exp_t) ((x.s.exph << 8) + x.s.expl);  /* 15-bit unsigned int */
-  if (MPFR_UNLIKELY (exp == 0))
-    exp -= 0x3FFD;
-  else
-    exp -= 0x3FFE;
-
-  MPFR_SET_EXP (tmp, exp - cnt - k * BITS_PER_MP_LIMB);
-
-  /* tmp is exact */
-  inexact = mpfr_set4 (r, tmp, rnd_mode, signd);
-
-  MPFR_SAVE_EXPO_FREE (expo);
-  return mpfr_check_range (r, inexact, rnd_mode);
-}
-
-#endif