[gcc] GCC 4.5.0=>4.5.1

gcc/mpfr/set_d.c

Index: gcc/mpfr/set_d.c
diff --git a/gcc/mpfr/set_d.c b/gcc/mpfr/set_d.c
deleted file mode 100644
index 6bb2a38aedc05952894129de4c17db93e910e213..0000000000000000000000000000000000000000
--- a/gcc/mpfr/set_d.c
+++ /dev/null
@@ -1,258 +0,0 @@
-/* mpfr_set_d -- convert a machine double precision float to
-                 a multiple precision floating-point number
-
-Copyright 1999, 2000, 2001, 2002, 2003, 2004, 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 <string.h> /* For memcmp if _GMP_IEEE_FLOAT == 0 */
-#include <float.h>  /* For DOUBLE_ISINF and DOUBLE_ISNAN */
-
-#define MPFR_NEED_LONGLONG_H
-#include "mpfr-impl.h"
-
-/* extracts the bits of d in rp[0..n-1] where n=ceil(53/BITS_PER_MP_LIMB).
-   Assumes d is neither 0 nor NaN nor Inf. */
-static long
-__gmpfr_extract_double (mp_ptr rp, double d)
-     /* e=0 iff BITS_PER_MP_LIMB=32 and rp has only one limb */
-{
-  long exp;
-  mp_limb_t manl;
-#if BITS_PER_MP_LIMB == 32
-  mp_limb_t manh;
-#endif
-
-  /* BUGS
-     1. Should handle Inf and NaN in IEEE specific code.
-     2. Handle Inf and NaN also in default code, to avoid hangs.
-     3. Generalize to handle all BITS_PER_MP_LIMB.
-     4. This lits is incomplete and misspelled.
-   */
-
-  MPFR_ASSERTD(!DOUBLE_ISNAN(d));
-  MPFR_ASSERTD(!DOUBLE_ISINF(d));
-  MPFR_ASSERTD(d != 0.0);
-
-#if _GMP_IEEE_FLOATS
-
-  {
-    union ieee_double_extract x;
-    x.d = d;
-
-    exp = x.s.exp;
-    if (exp)
-      {
-#if BITS_PER_MP_LIMB >= 64
-        manl = ((MPFR_LIMB_ONE << 63)
-                | ((mp_limb_t) x.s.manh << 43) | ((mp_limb_t) x.s.manl << 11));
-#else
-        manh = (MPFR_LIMB_ONE << 31) | (x.s.manh << 11) | (x.s.manl >> 21);
-        manl = x.s.manl << 11;
-#endif
-      }
-    else /* denormalized number */
-      {
-#if BITS_PER_MP_LIMB >= 64
-        manl = ((mp_limb_t) x.s.manh << 43) | ((mp_limb_t) x.s.manl << 11);
-#else
-        manh = (x.s.manh << 11) /* high 21 bits */
-          | (x.s.manl >> 21); /* middle 11 bits */
-        manl = x.s.manl << 11; /* low 21 bits */
-#endif
-      }
-
-    if (exp)
-      exp -= 1022;
-    else
-      exp = -1021;
-  }
-
-#else /* _GMP_IEEE_FLOATS */
-
-  {
-    /* Unknown (or known to be non-IEEE) double format.  */
-    exp = 0;
-    if (d >= 1.0)
-      {
-        MPFR_ASSERTN (d * 0.5 != d);
-        while (d >= 32768.0)
-          {
-            d *= (1.0 / 65536.0);
-            exp += 16;
-          }
-        while (d >= 1.0)
-          {
-            d *= 0.5;
-            exp += 1;
-          }
-      }
-    else if (d < 0.5)
-      {
-        while (d < (1.0 / 65536.0))
-          {
-            d *=  65536.0;
-            exp -= 16;
-          }
-        while (d < 0.5)
-          {
-            d *= 2.0;
-            exp -= 1;
-          }
-      }
-
-    d *= MP_BASE_AS_DOUBLE;
-#if BITS_PER_MP_LIMB >= 64
-    manl = d;
-#else
-    manh = (mp_limb_t) d;
-    manl = (mp_limb_t) ((d - manh) * MP_BASE_AS_DOUBLE);
-#endif
-  }
-
-#endif /* _GMP_IEEE_FLOATS */
-
-#if BITS_PER_MP_LIMB >= 64
-  rp[0] = manl;
-#else
-  rp[1] = manh;
-  rp[0] = manl;
-#endif
-
-  return exp;
-}
-
-/* End of part included from gmp-2.0.2 */
-
-int
-mpfr_set_d (mpfr_ptr r, double d, mp_rnd_t rnd_mode)
-{
-  int signd, inexact;
-  unsigned int cnt;
-  mp_size_t i, k;
-  mpfr_t tmp;
-  mp_limb_t tmpmant[MPFR_LIMBS_PER_DOUBLE];
-  MPFR_SAVE_EXPO_DECL (expo);
-
-  MPFR_CLEAR_FLAGS(r);
-
-  if (MPFR_UNLIKELY(DOUBLE_ISNAN(d)))
-    {
-      MPFR_SET_NAN(r);
-      MPFR_RET_NAN;
-    }
-  else if (MPFR_UNLIKELY(d == 0))
-    {
-#if _GMP_IEEE_FLOATS
-      union ieee_double_extract x;
-
-      MPFR_SET_ZERO(r);
-      /* set correct sign */
-      x.d = d;
-      if (x.s.sig == 1)
-        MPFR_SET_NEG(r);
-      else
-        MPFR_SET_POS(r);
-#else /* _GMP_IEEE_FLOATS */
-      MPFR_SET_ZERO(r);
-      {
-        /* This is to get the sign of zero on non-IEEE hardware
-           Some systems support +0.0, -0.0 and unsigned zero.
-           We can't use d==+0.0 since it should be always true,
-           so we check that the memory representation of d is the
-           same than +0.0. etc */
-        /* FIXME: consider the case where +0.0 or -0.0 may have several
-           representations. */
-        double poszero = +0.0, negzero = DBL_NEG_ZERO;
-        if (memcmp(&d, &poszero, sizeof(double)) == 0)
-          MPFR_SET_POS(r);
-        else if (memcmp(&d, &negzero, sizeof(double)) == 0)
-          MPFR_SET_NEG(r);
-        else
-          MPFR_SET_POS(r);
-      }
-#endif
-      return 0; /* 0 is exact */
-    }
-  else if (MPFR_UNLIKELY(DOUBLE_ISINF(d)))
-    {
-      MPFR_SET_INF(r);
-      if (d > 0)
-        MPFR_SET_POS(r);
-      else
-        MPFR_SET_NEG(r);
-      return 0; /* infinity is exact */
-    }
-
-  /* now d is neither 0, nor NaN nor Inf */
-
-  MPFR_SAVE_EXPO_MARK (expo);
-
-  /* warning: don't use tmp=r here, even if SIZE(r) >= MPFR_LIMBS_PER_DOUBLE,
-     since PREC(r) may be different from PREC(tmp), and then both variables
-     would have same precision in the mpfr_set4 call below. */
-  MPFR_MANT(tmp) = tmpmant;
-  MPFR_PREC(tmp) = IEEE_DBL_MANT_DIG;
-
-  signd = (d < 0) ? MPFR_SIGN_NEG : MPFR_SIGN_POS;
-  d = ABS (d);
-
-  /* don't use MPFR_SET_EXP here since the exponent may be out of range */
-  MPFR_EXP(tmp) = __gmpfr_extract_double (tmpmant, d);
-
-#ifdef WANT_ASSERT
-  /* Failed assertion if the stored value is 0 (e.g., if the exponent range
-     has been reduced at the wrong moment and an underflow to 0 occurred).
-     Probably a bug in the C implementation if this happens. */
-  i = 0;
-  while (tmpmant[i] == 0)
-    {
-      i++;
-      MPFR_ASSERTN(i < MPFR_LIMBS_PER_DOUBLE);
-    }
-#endif
-
-  /* determine the index i-1 of the most significant non-zero limb
-     and the number k of zero high limbs */
-  i = MPFR_LIMBS_PER_DOUBLE;
-  MPN_NORMALIZE_NOT_ZERO(tmpmant, i);
-  k = MPFR_LIMBS_PER_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);
-
-  /* don't use MPFR_SET_EXP here since the exponent may be out of range */
-  MPFR_EXP(tmp) -= (mp_exp_t) (cnt + k * BITS_PER_MP_LIMB);
-
-  /* tmp is exact since PREC(tmp)=53 */
-  inexact = mpfr_set4 (r, tmp, rnd_mode, signd);
-
-  MPFR_SAVE_EXPO_FREE (expo);
-  return mpfr_check_range (r, inexact, rnd_mode);
-}
-
-
-