Delete old versions of GCC.

Change-Id: I710f125d905290e1024cbd67f48299861790c66c

1 files changed, 0 insertions, 759 deletions

diff --git a/gcc-4.4.3/libiberty/floatformat.c b/gcc-4.4.3/libiberty/floatformat.c
deleted file mode 100644
index cbf13ea34..000000000
--- a/gcc-4.4.3/libiberty/floatformat.c
+++ /dev/null
@@ -1,759 +0,0 @@
-/* IEEE floating point support routines, for GDB, the GNU Debugger.
-   Copyright 1991, 1994, 1999, 2000, 2003, 2005, 2006
-   Free Software Foundation, Inc.
-
-This file is part of GDB.
-
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
-
-This program 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 General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
-
-/* This is needed to pick up the NAN macro on some systems.  */
-#define _GNU_SOURCE
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <math.h>
-
-#ifdef HAVE_STRING_H
-#include <string.h>
-#endif
-
-/* On some platforms, <float.h> provides DBL_QNAN.  */
-#ifdef STDC_HEADERS
-#include <float.h>
-#endif
-
-#include "ansidecl.h"
-#include "libiberty.h"
-#include "floatformat.h"
-
-#ifndef INFINITY
-#ifdef HUGE_VAL
-#define INFINITY HUGE_VAL
-#else
-#define INFINITY (1.0 / 0.0)
-#endif
-#endif
-
-#ifndef NAN
-#ifdef DBL_QNAN
-#define NAN DBL_QNAN
-#else
-#define NAN (0.0 / 0.0)
-#endif
-#endif
-
-static int mant_bits_set (const struct floatformat *, const unsigned char *);
-static unsigned long get_field (const unsigned char *,
-                                enum floatformat_byteorders,
-                                unsigned int,
-                                unsigned int,
-                                unsigned int);
-static int floatformat_always_valid (const struct floatformat *fmt,
-                                     const void *from);
-
-static int
-floatformat_always_valid (const struct floatformat *fmt ATTRIBUTE_UNUSED,
-                          const void *from ATTRIBUTE_UNUSED)
-{
-  return 1;
-}
-
-/* The odds that CHAR_BIT will be anything but 8 are low enough that I'm not
-   going to bother with trying to muck around with whether it is defined in
-   a system header, what we do if not, etc.  */
-#define FLOATFORMAT_CHAR_BIT 8
-
-/* floatformats for IEEE single and double, big and little endian.  */
-const struct floatformat floatformat_ieee_single_big =
-{
-  floatformat_big, 32, 0, 1, 8, 127, 255, 9, 23,
-  floatformat_intbit_no,
-  "floatformat_ieee_single_big",
-  floatformat_always_valid,
-  NULL
-};
-const struct floatformat floatformat_ieee_single_little =
-{
-  floatformat_little, 32, 0, 1, 8, 127, 255, 9, 23,
-  floatformat_intbit_no,
-  "floatformat_ieee_single_little",
-  floatformat_always_valid,
-  NULL
-};
-const struct floatformat floatformat_ieee_double_big =
-{
-  floatformat_big, 64, 0, 1, 11, 1023, 2047, 12, 52,
-  floatformat_intbit_no,
-  "floatformat_ieee_double_big",
-  floatformat_always_valid,
-  NULL
-};
-const struct floatformat floatformat_ieee_double_little =
-{
-  floatformat_little, 64, 0, 1, 11, 1023, 2047, 12, 52,
-  floatformat_intbit_no,
-  "floatformat_ieee_double_little",
-  floatformat_always_valid,
-  NULL
-};
-
-/* floatformat for IEEE double, little endian byte order, with big endian word
-   ordering, as on the ARM.  */
-
-const struct floatformat floatformat_ieee_double_littlebyte_bigword =
-{
-  floatformat_littlebyte_bigword, 64, 0, 1, 11, 1023, 2047, 12, 52,
-  floatformat_intbit_no,
-  "floatformat_ieee_double_littlebyte_bigword",
-  floatformat_always_valid,
-  NULL
-};
-
-/* floatformat for VAX.  Not quite IEEE, but close enough.  */
-
-const struct floatformat floatformat_vax_f =
-{
-  floatformat_vax, 32, 0, 1, 8, 129, 0, 9, 23,
-  floatformat_intbit_no,
-  "floatformat_vax_f",
-  floatformat_always_valid,
-  NULL
-};
-const struct floatformat floatformat_vax_d =
-{
-  floatformat_vax, 64, 0, 1, 8, 129, 0, 9, 55,
-  floatformat_intbit_no,
-  "floatformat_vax_d",
-  floatformat_always_valid,
-  NULL
-};
-const struct floatformat floatformat_vax_g =
-{
-  floatformat_vax, 64, 0, 1, 11, 1025, 0, 12, 52,
-  floatformat_intbit_no,
-  "floatformat_vax_g",
-  floatformat_always_valid,
-  NULL
-};
-
-static int floatformat_i387_ext_is_valid (const struct floatformat *fmt,
-					  const void *from);
-
-static int
-floatformat_i387_ext_is_valid (const struct floatformat *fmt, const void *from)
-{
-  /* In the i387 double-extended format, if the exponent is all ones,
-     then the integer bit must be set.  If the exponent is neither 0
-     nor ~0, the intbit must also be set.  Only if the exponent is
-     zero can it be zero, and then it must be zero.  */
-  unsigned long exponent, int_bit;
-  const unsigned char *ufrom = (const unsigned char *) from;
-
-  exponent = get_field (ufrom, fmt->byteorder, fmt->totalsize,
-			fmt->exp_start, fmt->exp_len);
-  int_bit = get_field (ufrom, fmt->byteorder, fmt->totalsize,
-		       fmt->man_start, 1);
-
-  if ((exponent == 0) != (int_bit == 0))
-    return 0;
-  else
-    return 1;
-}
-
-const struct floatformat floatformat_i387_ext =
-{
-  floatformat_little, 80, 0, 1, 15, 0x3fff, 0x7fff, 16, 64,
-  floatformat_intbit_yes,
-  "floatformat_i387_ext",
-  floatformat_i387_ext_is_valid,
-  NULL
-};
-const struct floatformat floatformat_m68881_ext =
-{
-  /* Note that the bits from 16 to 31 are unused.  */
-  floatformat_big, 96, 0, 1, 15, 0x3fff, 0x7fff, 32, 64,
-  floatformat_intbit_yes,
-  "floatformat_m68881_ext",
-  floatformat_always_valid,
-  NULL
-};
-const struct floatformat floatformat_i960_ext =
-{
-  /* Note that the bits from 0 to 15 are unused.  */
-  floatformat_little, 96, 16, 17, 15, 0x3fff, 0x7fff, 32, 64,
-  floatformat_intbit_yes,
-  "floatformat_i960_ext",
-  floatformat_always_valid,
-  NULL
-};
-const struct floatformat floatformat_m88110_ext =
-{
-  floatformat_big, 80, 0, 1, 15, 0x3fff, 0x7fff, 16, 64,
-  floatformat_intbit_yes,
-  "floatformat_m88110_ext",
-  floatformat_always_valid,
-  NULL
-};
-const struct floatformat floatformat_m88110_harris_ext =
-{
-  /* Harris uses raw format 128 bytes long, but the number is just an ieee
-     double, and the last 64 bits are wasted. */
-  floatformat_big,128, 0, 1, 11,  0x3ff,  0x7ff, 12, 52,
-  floatformat_intbit_no,
-  "floatformat_m88110_ext_harris",
-  floatformat_always_valid,
-  NULL
-};
-const struct floatformat floatformat_arm_ext_big =
-{
-  /* Bits 1 to 16 are unused.  */
-  floatformat_big, 96, 0, 17, 15, 0x3fff, 0x7fff, 32, 64,
-  floatformat_intbit_yes,
-  "floatformat_arm_ext_big",
-  floatformat_always_valid,
-  NULL
-};
-const struct floatformat floatformat_arm_ext_littlebyte_bigword =
-{
-  /* Bits 1 to 16 are unused.  */
-  floatformat_littlebyte_bigword, 96, 0, 17, 15, 0x3fff, 0x7fff, 32, 64,
-  floatformat_intbit_yes,
-  "floatformat_arm_ext_littlebyte_bigword",
-  floatformat_always_valid,
-  NULL
-};
-const struct floatformat floatformat_ia64_spill_big =
-{
-  floatformat_big, 128, 0, 1, 17, 65535, 0x1ffff, 18, 64,
-  floatformat_intbit_yes,
-  "floatformat_ia64_spill_big",
-  floatformat_always_valid,
-  NULL
-};
-const struct floatformat floatformat_ia64_spill_little =
-{
-  floatformat_little, 128, 0, 1, 17, 65535, 0x1ffff, 18, 64,
-  floatformat_intbit_yes,
-  "floatformat_ia64_spill_little",
-  floatformat_always_valid,
-  NULL
-};
-const struct floatformat floatformat_ia64_quad_big =
-{
-  floatformat_big, 128, 0, 1, 15, 16383, 0x7fff, 16, 112,
-  floatformat_intbit_no,
-  "floatformat_ia64_quad_big",
-  floatformat_always_valid,
-  NULL
-};
-const struct floatformat floatformat_ia64_quad_little =
-{
-  floatformat_little, 128, 0, 1, 15, 16383, 0x7fff, 16, 112,
-  floatformat_intbit_no,
-  "floatformat_ia64_quad_little",
-  floatformat_always_valid,
-  NULL
-};
-
-static int
-floatformat_ibm_long_double_is_valid (const struct floatformat *fmt,
-				      const void *from)
-{
-  const unsigned char *ufrom = (const unsigned char *) from;
-  const struct floatformat *hfmt = fmt->split_half;
-  long top_exp, bot_exp;
-  int top_nan = 0;
-
-  top_exp = get_field (ufrom, hfmt->byteorder, hfmt->totalsize,
-		       hfmt->exp_start, hfmt->exp_len);
-  bot_exp = get_field (ufrom + 8, hfmt->byteorder, hfmt->totalsize,
-		       hfmt->exp_start, hfmt->exp_len);
-
-  if ((unsigned long) top_exp == hfmt->exp_nan)
-    top_nan = mant_bits_set (hfmt, ufrom);
-
-  /* A NaN is valid with any low part.  */
-  if (top_nan)
-    return 1;
-
-  /* An infinity, zero or denormal requires low part 0 (positive or
-     negative).  */
-  if ((unsigned long) top_exp == hfmt->exp_nan || top_exp == 0)
-    {
-      if (bot_exp != 0)
-	return 0;
-
-      return !mant_bits_set (hfmt, ufrom + 8);
-    }
-
-  /* The top part is now a finite normal value.  The long double value
-     is the sum of the two parts, and the top part must equal the
-     result of rounding the long double value to nearest double.  Thus
-     the bottom part must be <= 0.5ulp of the top part in absolute
-     value, and if it is < 0.5ulp then the long double is definitely
-     valid.  */
-  if (bot_exp < top_exp - 53)
-    return 1;
-  if (bot_exp > top_exp - 53 && bot_exp != 0)
-    return 0;
-  if (bot_exp == 0)
-    {
-      /* The bottom part is 0 or denormal.  Determine which, and if
-	 denormal the first two set bits.  */
-      int first_bit = -1, second_bit = -1, cur_bit;
-      for (cur_bit = 0; (unsigned int) cur_bit < hfmt->man_len; cur_bit++)
-	if (get_field (ufrom + 8, hfmt->byteorder, hfmt->totalsize,
-		       hfmt->man_start + cur_bit, 1))
-	  {
-	    if (first_bit == -1)
-	      first_bit = cur_bit;
-	    else
-	      {
-		second_bit = cur_bit;
-		break;
-	      }
-	  }
-      /* Bottom part 0 is OK.  */
-      if (first_bit == -1)
-	return 1;
-      /* The real exponent of the bottom part is -first_bit.  */
-      if (-first_bit < top_exp - 53)
-	return 1;
-      if (-first_bit > top_exp - 53)
-	return 0;
-      /* The bottom part is at least 0.5ulp of the top part.  For this
-	 to be OK, the bottom part must be exactly 0.5ulp (i.e. no
-	 more bits set) and the top part must have last bit 0.  */
-      if (second_bit != -1)
-	return 0;
-      return !get_field (ufrom, hfmt->byteorder, hfmt->totalsize,
-			 hfmt->man_start + hfmt->man_len - 1, 1);
-    }
-  else
-    {
-      /* The bottom part is at least 0.5ulp of the top part.  For this
-	 to be OK, it must be exactly 0.5ulp (i.e. no explicit bits
-	 set) and the top part must have last bit 0.  */
-      if (get_field (ufrom, hfmt->byteorder, hfmt->totalsize,
-		     hfmt->man_start + hfmt->man_len - 1, 1))
-	return 0;
-      return !mant_bits_set (hfmt, ufrom + 8);
-    }
-}
-
-const struct floatformat floatformat_ibm_long_double =
-{
-  floatformat_big, 128, 0, 1, 11, 1023, 2047, 12, 52,
-  floatformat_intbit_no,
-  "floatformat_ibm_long_double",
-  floatformat_ibm_long_double_is_valid,
-  &floatformat_ieee_double_big
-};
-
-
-#ifndef min
-#define min(a, b) ((a) < (b) ? (a) : (b))
-#endif
-
-/* Return 1 if any bits are explicitly set in the mantissa of UFROM,
-   format FMT, 0 otherwise.  */
-static int
-mant_bits_set (const struct floatformat *fmt, const unsigned char *ufrom)
-{
-  unsigned int mant_bits, mant_off;
-  int mant_bits_left;
-
-  mant_off = fmt->man_start;
-  mant_bits_left = fmt->man_len;
-  while (mant_bits_left > 0)
-    {
-      mant_bits = min (mant_bits_left, 32);
-
-      if (get_field (ufrom, fmt->byteorder, fmt->totalsize,
-		     mant_off, mant_bits) != 0)
-	return 1;
-
-      mant_off += mant_bits;
-      mant_bits_left -= mant_bits;
-    }
-  return 0;
-}
-
-/* Extract a field which starts at START and is LEN bits long.  DATA and
-   TOTAL_LEN are the thing we are extracting it from, in byteorder ORDER.  */
-static unsigned long
-get_field (const unsigned char *data, enum floatformat_byteorders order,
-           unsigned int total_len, unsigned int start, unsigned int len)
-{
-  unsigned long result = 0;
-  unsigned int cur_byte;
-  int lo_bit, hi_bit, cur_bitshift = 0;
-  int nextbyte = (order == floatformat_little) ? 1 : -1;
-
-  /* Start is in big-endian bit order!  Fix that first.  */
-  start = total_len - (start + len);
-
-  /* Start at the least significant part of the field.  */
-  if (order == floatformat_little)
-    cur_byte = start / FLOATFORMAT_CHAR_BIT;
-  else
-    cur_byte = (total_len - start - 1) / FLOATFORMAT_CHAR_BIT;
-
-  lo_bit = start % FLOATFORMAT_CHAR_BIT;
-  hi_bit = min (lo_bit + len, FLOATFORMAT_CHAR_BIT);
-  
-  do
-    {
-      unsigned int shifted = *(data + cur_byte) >> lo_bit;
-      unsigned int bits = hi_bit - lo_bit;
-      unsigned int mask = (1 << bits) - 1;
-      result |= (shifted & mask) << cur_bitshift;
-      len -= bits;
-      cur_bitshift += bits;
-      cur_byte += nextbyte;
-      lo_bit = 0;
-      hi_bit = min (len, FLOATFORMAT_CHAR_BIT);
-    }
-  while (len != 0);
-
-  return result;
-}
-  
-/* Convert from FMT to a double.
-   FROM is the address of the extended float.
-   Store the double in *TO.  */
-
-void
-floatformat_to_double (const struct floatformat *fmt,
-                       const void *from, double *to)
-{
-  const unsigned char *ufrom = (const unsigned char *) from;
-  double dto;
-  long exponent;
-  unsigned long mant;
-  unsigned int mant_bits, mant_off;
-  int mant_bits_left;
-  int special_exponent;		/* It's a NaN, denorm or zero */
-
-  /* Split values are not handled specially, since the top half has
-     the correctly rounded double value (in the only supported case of
-     split values).  */
-
-  exponent = get_field (ufrom, fmt->byteorder, fmt->totalsize,
-			fmt->exp_start, fmt->exp_len);
-
-  /* If the exponent indicates a NaN, we don't have information to
-     decide what to do.  So we handle it like IEEE, except that we
-     don't try to preserve the type of NaN.  FIXME.  */
-  if ((unsigned long) exponent == fmt->exp_nan)
-    {
-      int nan = mant_bits_set (fmt, ufrom);
-
-      /* On certain systems (such as GNU/Linux), the use of the
-	 INFINITY macro below may generate a warning that can not be
-	 silenced due to a bug in GCC (PR preprocessor/11931).  The
-	 preprocessor fails to recognise the __extension__ keyword in
-	 conjunction with the GNU/C99 extension for hexadecimal
-	 floating point constants and will issue a warning when
-	 compiling with -pedantic.  */
-      if (nan)
-	dto = NAN;
-      else
-	dto = INFINITY;
-
-      if (get_field (ufrom, fmt->byteorder, fmt->totalsize, fmt->sign_start, 1))
-	dto = -dto;
-
-      *to = dto;
-
-      return;
-    }
-
-  mant_bits_left = fmt->man_len;
-  mant_off = fmt->man_start;
-  dto = 0.0;
-
-  special_exponent = exponent == 0 || (unsigned long) exponent == fmt->exp_nan;
-
-  /* Don't bias zero's, denorms or NaNs.  */
-  if (!special_exponent)
-    exponent -= fmt->exp_bias;
-
-  /* Build the result algebraically.  Might go infinite, underflow, etc;
-     who cares. */
-
-  /* If this format uses a hidden bit, explicitly add it in now.  Otherwise,
-     increment the exponent by one to account for the integer bit.  */
-
-  if (!special_exponent)
-    {
-      if (fmt->intbit == floatformat_intbit_no)
-	dto = ldexp (1.0, exponent);
-      else
-	exponent++;
-    }
-
-  while (mant_bits_left > 0)
-    {
-      mant_bits = min (mant_bits_left, 32);
-
-      mant = get_field (ufrom, fmt->byteorder, fmt->totalsize,
-			 mant_off, mant_bits);
-
-      /* Handle denormalized numbers.  FIXME: What should we do for
-	 non-IEEE formats?  */
-      if (special_exponent && exponent == 0 && mant != 0)
-	dto += ldexp ((double)mant,
-		      (- fmt->exp_bias
-		       - mant_bits
-		       - (mant_off - fmt->man_start)
-		       + 1));
-      else
-	dto += ldexp ((double)mant, exponent - mant_bits);
-      if (exponent != 0)
-	exponent -= mant_bits;
-      mant_off += mant_bits;
-      mant_bits_left -= mant_bits;
-    }
-
-  /* Negate it if negative.  */
-  if (get_field (ufrom, fmt->byteorder, fmt->totalsize, fmt->sign_start, 1))
-    dto = -dto;
-  *to = dto;
-}
-
-static void put_field (unsigned char *, enum floatformat_byteorders,
-                       unsigned int,
-                       unsigned int,
-                       unsigned int,
-                       unsigned long);
-
-/* Set a field which starts at START and is LEN bits long.  DATA and
-   TOTAL_LEN are the thing we are extracting it from, in byteorder ORDER.  */
-static void
-put_field (unsigned char *data, enum floatformat_byteorders order,
-           unsigned int total_len, unsigned int start, unsigned int len,
-           unsigned long stuff_to_put)
-{
-  unsigned int cur_byte;
-  int lo_bit, hi_bit;
-  int nextbyte = (order == floatformat_little) ? 1 : -1;
-
-  /* Start is in big-endian bit order!  Fix that first.  */
-  start = total_len - (start + len);
-
-  /* Start at the least significant part of the field.  */
-  if (order == floatformat_little)
-    cur_byte = start / FLOATFORMAT_CHAR_BIT;
-  else
-    cur_byte = (total_len - start - 1) / FLOATFORMAT_CHAR_BIT;
-
-  lo_bit = start % FLOATFORMAT_CHAR_BIT;
-  hi_bit = min (lo_bit + len, FLOATFORMAT_CHAR_BIT);
-  
-  do
-    {
-      unsigned char *byte_ptr = data + cur_byte;
-      unsigned int bits = hi_bit - lo_bit;
-      unsigned int mask = ((1 << bits) - 1) << lo_bit;
-      *byte_ptr = (*byte_ptr & ~mask) | ((stuff_to_put << lo_bit) & mask);
-      stuff_to_put >>= bits;
-      len -= bits;
-      cur_byte += nextbyte;
-      lo_bit = 0;
-      hi_bit = min (len, FLOATFORMAT_CHAR_BIT);
-    }
-  while (len != 0);
-}
-
-/* The converse: convert the double *FROM to an extended float
-   and store where TO points.  Neither FROM nor TO have any alignment
-   restrictions.  */
-
-void
-floatformat_from_double (const struct floatformat *fmt,
-                         const double *from, void *to)
-{
-  double dfrom;
-  int exponent;
-  double mant;
-  unsigned int mant_bits, mant_off;
-  int mant_bits_left;
-  unsigned char *uto = (unsigned char *) to;
-
-  dfrom = *from;
-  memset (uto, 0, fmt->totalsize / FLOATFORMAT_CHAR_BIT);
-
-  /* Split values are not handled specially, since a bottom half of
-     zero is correct for any value representable as double (in the
-     only supported case of split values).  */
-
-  /* If negative, set the sign bit.  */
-  if (dfrom < 0)
-    {
-      put_field (uto, fmt->byteorder, fmt->totalsize, fmt->sign_start, 1, 1);
-      dfrom = -dfrom;
-    }
-
-  if (dfrom == 0)
-    {
-      /* 0.0.  */
-      return;
-    }
-
-  if (dfrom != dfrom)
-    {
-      /* NaN.  */
-      put_field (uto, fmt->byteorder, fmt->totalsize, fmt->exp_start,
-		 fmt->exp_len, fmt->exp_nan);
-      /* Be sure it's not infinity, but NaN value is irrelevant.  */
-      put_field (uto, fmt->byteorder, fmt->totalsize, fmt->man_start,
-		 32, 1);
-      return;
-    }
-
-  if (dfrom + dfrom == dfrom)
-    {
-      /* This can only happen for an infinite value (or zero, which we
-	 already handled above).  */
-      put_field (uto, fmt->byteorder, fmt->totalsize, fmt->exp_start,
-		 fmt->exp_len, fmt->exp_nan);
-      return;
-    }
-
-  mant = frexp (dfrom, &exponent);
-  if (exponent + fmt->exp_bias - 1 > 0)
-    put_field (uto, fmt->byteorder, fmt->totalsize, fmt->exp_start,
-	       fmt->exp_len, exponent + fmt->exp_bias - 1);
-  else
-    {
-      /* Handle a denormalized number.  FIXME: What should we do for
-	 non-IEEE formats?  */
-      put_field (uto, fmt->byteorder, fmt->totalsize, fmt->exp_start,
-		 fmt->exp_len, 0);
-      mant = ldexp (mant, exponent + fmt->exp_bias - 1);
-    }
-
-  mant_bits_left = fmt->man_len;
-  mant_off = fmt->man_start;
-  while (mant_bits_left > 0)
-    {
-      unsigned long mant_long;
-      mant_bits = mant_bits_left < 32 ? mant_bits_left : 32;
-
-      mant *= 4294967296.0;
-      mant_long = (unsigned long)mant;
-      mant -= mant_long;
-
-      /* If the integer bit is implicit, and we are not creating a
-	 denormalized number, then we need to discard it.  */
-      if ((unsigned int) mant_bits_left == fmt->man_len
-	  && fmt->intbit == floatformat_intbit_no
-	  && exponent + fmt->exp_bias - 1 > 0)
-	{
-	  mant_long &= 0x7fffffff;
-	  mant_bits -= 1;
-	}
-      else if (mant_bits < 32)
-	{
-	  /* The bits we want are in the most significant MANT_BITS bits of
-	     mant_long.  Move them to the least significant.  */
-	  mant_long >>= 32 - mant_bits;
-	}
-
-      put_field (uto, fmt->byteorder, fmt->totalsize,
-		 mant_off, mant_bits, mant_long);
-      mant_off += mant_bits;
-      mant_bits_left -= mant_bits;
-    }
-}
-
-/* Return non-zero iff the data at FROM is a valid number in format FMT.  */
-
-int
-floatformat_is_valid (const struct floatformat *fmt, const void *from)
-{
-  return fmt->is_valid (fmt, from);
-}
-
-
-#ifdef IEEE_DEBUG
-
-#include <stdio.h>
-
-/* This is to be run on a host which uses IEEE floating point.  */
-
-void
-ieee_test (double n)
-{
-  double result;
-
-  floatformat_to_double (&floatformat_ieee_double_little, &n, &result);
-  if ((n != result && (! isnan (n) || ! isnan (result)))
-      || (n < 0 && result >= 0)
-      || (n >= 0 && result < 0))
-    printf ("Differ(to): %.20g -> %.20g\n", n, result);
-
-  floatformat_from_double (&floatformat_ieee_double_little, &n, &result);
-  if ((n != result && (! isnan (n) || ! isnan (result)))
-      || (n < 0 && result >= 0)
-      || (n >= 0 && result < 0))
-    printf ("Differ(from): %.20g -> %.20g\n", n, result);
-
-#if 0
-  {
-    char exten[16];
-
-    floatformat_from_double (&floatformat_m68881_ext, &n, exten);
-    floatformat_to_double (&floatformat_m68881_ext, exten, &result);
-    if (n != result)
-      printf ("Differ(to+from): %.20g -> %.20g\n", n, result);
-  }
-#endif
-
-#if IEEE_DEBUG > 1
-  /* This is to be run on a host which uses 68881 format.  */
-  {
-    long double ex = *(long double *)exten;
-    if (ex != n)
-      printf ("Differ(from vs. extended): %.20g\n", n);
-  }
-#endif
-}
-
-int
-main (void)
-{
-  ieee_test (0.0);
-  ieee_test (0.5);
-  ieee_test (256.0);
-  ieee_test (0.12345);
-  ieee_test (234235.78907234);
-  ieee_test (-512.0);
-  ieee_test (-0.004321);
-  ieee_test (1.2E-70);
-  ieee_test (1.2E-316);
-  ieee_test (4.9406564584124654E-324);
-  ieee_test (- 4.9406564584124654E-324);
-  ieee_test (- 0.0);
-  ieee_test (- INFINITY);
-  ieee_test (- NAN);
-  ieee_test (INFINITY);
-  ieee_test (NAN);
-  return 0;
-}
-#endif