gcc:

	* config/fixed-bit.c, config/fixed-bit.h: Move to ../libgcc.

	libgcc:
	* fixed-bit.c, fixed-bit.h: New files.
	* fixed-obj.mk ($o$(objext), $(o)_s$(objext)): Use $(srcdir) to
	refer to fixed-bit.c.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@176036 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 1216 insertions, 0 deletions

diff --git a/libgcc/fixed-bit.c b/libgcc/fixed-bit.c
new file mode 100644
index 00000000000..d434d131eec
--- /dev/null
+++ b/libgcc/fixed-bit.c
@@ -0,0 +1,1216 @@
+/* This is a software fixed-point library.
+   Copyright (C) 2007, 2009 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC 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 3, or (at your option) any later
+version.
+
+GCC 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.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+/* This implements fixed-point arithmetic.
+
+   Contributed by Chao-ying Fu  <fu@mips.com>.  */
+
+/* To use this file, we need to define one of the following:
+   QQ_MODE, UQQ_MODE, HQ_MODE, UHQ_MODE, SQ_MODE, USQ_MODE, DQ_MODE, UDQ_MODE,
+   TQ_MODE, UTQ_MODE, HA_MODE, UHA_MODE, SA_MODE, USA_MODE, DA_MODE, UDA_MODE,
+   TA_MODE, UTA_MODE.
+   Then, all operators for this machine mode will be created.
+
+   Or, we need to define FROM_* TO_* for conversions from one mode to another
+   mode.  The mode could be one of the following:
+   Fract: QQ, UQQ, HQ, UHQ, SQ, USQ, DQ, UDQ, TQ, UTQ
+   Accum: HA, UHA, SA, USA, DA, UDA, TA, UTA
+   Signed integer: QI, HI, SI, DI, TI
+   Unsigned integer: UQI, UHI, USI, UDI, UTI
+   Floating-point: SF, DF
+   Ex: If we define FROM_QQ and TO_SI, the conversion from QQ to SI is
+   generated.  */
+
+#include "tconfig.h"
+#include "tsystem.h"
+#include "coretypes.h"
+#include "tm.h"
+
+#ifndef MIN_UNITS_PER_WORD
+#define MIN_UNITS_PER_WORD UNITS_PER_WORD
+#endif
+
+#include "fixed-bit.h"
+
+#if defined(FIXED_ADD) && defined(L_add)
+FIXED_C_TYPE
+FIXED_ADD (FIXED_C_TYPE a, FIXED_C_TYPE b)
+{
+  FIXED_C_TYPE c;
+  INT_C_TYPE x, y, z;
+  memcpy (&x, &a, FIXED_SIZE);
+  memcpy (&y, &b, FIXED_SIZE);
+  z = x + y;
+#if HAVE_PADDING_BITS
+  z = z << PADDING_BITS;
+  z = z >> PADDING_BITS;
+#endif
+  memcpy (&c, &z, FIXED_SIZE);
+  return c;
+}
+#endif /* FIXED_ADD */
+
+#if defined(FIXED_SSADD) && defined(L_ssadd)
+FIXED_C_TYPE
+FIXED_SSADD (FIXED_C_TYPE a, FIXED_C_TYPE b)
+{
+  FIXED_C_TYPE c;
+  INT_C_TYPE x, y, z;
+  memcpy (&x, &a, FIXED_SIZE);
+  memcpy (&y, &b, FIXED_SIZE);
+  z = x + y;
+  if ((((x ^ y) >> I_F_BITS) & 1) == 0)
+    {
+      if (((z ^ x) >> I_F_BITS) & 1)
+        {
+          z = 1;
+          z = z << I_F_BITS;
+          if (x >= 0)
+            z--;
+        }
+    }
+#if HAVE_PADDING_BITS
+  z = z << PADDING_BITS;
+  z = z >> PADDING_BITS;
+#endif
+  memcpy (&c, &z, FIXED_SIZE);
+  return c;
+}
+#endif /* FIXED_SSADD */
+
+#if defined(FIXED_USADD) && defined(L_usadd)
+FIXED_C_TYPE
+FIXED_USADD (FIXED_C_TYPE a, FIXED_C_TYPE b)
+{
+  FIXED_C_TYPE c;
+  INT_C_TYPE x, y, z;
+  memcpy (&x, &a, FIXED_SIZE);
+  memcpy (&y, &b, FIXED_SIZE);
+  z = x + y;
+#if HAVE_PADDING_BITS
+  z = z << PADDING_BITS;
+  z = z >> PADDING_BITS;
+#endif
+  if (z < x || z < y) /* max */
+    {
+       z = -1;
+#if HAVE_PADDING_BITS
+       z = z << PADDING_BITS;
+       z = z >> PADDING_BITS;
+#endif
+    }
+  memcpy (&c, &z, FIXED_SIZE);
+  return c;
+}
+#endif /* FIXED_USADD */
+
+#if defined(FIXED_SUB) && defined(L_sub)
+FIXED_C_TYPE
+FIXED_SUB (FIXED_C_TYPE a, FIXED_C_TYPE b)
+{
+  FIXED_C_TYPE c;
+  INT_C_TYPE x, y, z;
+  memcpy (&x, &a, FIXED_SIZE);
+  memcpy (&y, &b, FIXED_SIZE);
+  z = x - y;
+#if HAVE_PADDING_BITS
+  z = z << PADDING_BITS;
+  z = z >> PADDING_BITS;
+#endif
+  memcpy (&c, &z, FIXED_SIZE);
+  return c;
+}
+#endif /* FIXED_SUB */
+
+#if defined(FIXED_SSSUB) && defined(L_sssub)
+FIXED_C_TYPE
+FIXED_SSSUB (FIXED_C_TYPE a, FIXED_C_TYPE b)
+{
+  FIXED_C_TYPE c;
+  INT_C_TYPE x, y, z;
+  memcpy (&x, &a, FIXED_SIZE);
+  memcpy (&y, &b, FIXED_SIZE);
+  z = x - y;
+  if (((x ^ y) >> I_F_BITS) & 1)
+    {
+      if (((z ^ x) >> I_F_BITS) & 1)
+        {
+          z = 1;
+          z = z << I_F_BITS;
+          if (x >= 0)
+            z--;
+        }
+    }
+#if HAVE_PADDING_BITS
+  z = z << PADDING_BITS;
+  z = z >> PADDING_BITS;
+#endif
+  memcpy (&c, &z, FIXED_SIZE);
+  return c;
+}
+#endif /* FIXED_SSSUB */
+
+#if defined(FIXED_USSUB) && defined(L_ussub)
+FIXED_C_TYPE
+FIXED_USSUB (FIXED_C_TYPE a, FIXED_C_TYPE b)
+{
+  FIXED_C_TYPE c;
+  INT_C_TYPE x, y, z;
+  memcpy (&x, &a, FIXED_SIZE);
+  memcpy (&y, &b, FIXED_SIZE);
+  z = x - y;
+  if (x < y)
+    z = 0;
+#if HAVE_PADDING_BITS
+  z = z << PADDING_BITS;
+  z = z >> PADDING_BITS;
+#endif
+  memcpy (&c, &z, FIXED_SIZE);
+  return c;
+}
+#endif /* FIXED_USSUB */
+
+#if defined(FIXED_SATURATE1) && defined(L_saturate1)
+void
+FIXED_SATURATE1 (DINT_C_TYPE *a)
+{
+  DINT_C_TYPE max, min;
+  max = (DINT_C_TYPE)1 << I_F_BITS;
+  max = max - 1;
+#if MODE_UNSIGNED == 0
+  min = (DINT_C_TYPE)1 << (2 * FIXED_WIDTH - 1);
+  min = min >> (2 * FIXED_WIDTH - 1 - I_F_BITS);
+#else
+  min = 0;
+#endif
+  if (*a > max)
+    *a = max;
+  else if (*a < min)
+    *a = min;
+}
+#endif /* FIXED_SATURATE1 */
+
+#if defined(FIXED_SATURATE2) && defined(L_saturate2)
+void
+FIXED_SATURATE2 (INT_C_TYPE *high, INT_C_TYPE *low)
+{
+  INT_C_TYPE r_max, s_max, r_min, s_min;
+  r_max = 0;
+#if (MODE_UNSIGNED == 0) || HAVE_PADDING_BITS
+  s_max = (INT_C_TYPE)1 << I_F_BITS;
+  s_max = s_max - 1;
+#else
+  s_max = -1;
+#endif
+#if MODE_UNSIGNED == 0
+  r_min = -1;
+  s_min = (INT_C_TYPE)1 << (FIXED_WIDTH - 1);
+  s_min = s_min >> (FIXED_WIDTH - 1 - I_F_BITS);
+#else
+  r_min = 0;
+  s_min = 0;
+#endif
+
+  if (*high > r_max
+      || (*high == r_max && (UINT_C_TYPE)(*low) > (UINT_C_TYPE)s_max))
+    {
+      *high = r_max;
+      *low = s_max;
+    }
+  else if (*high < r_min ||
+	   (*high == r_min && (UINT_C_TYPE)(*low) < (UINT_C_TYPE)s_min))
+    {
+      *high = r_min;
+      *low = s_min;
+    }
+}
+#endif /* FIXED_SATURATE2 */
+
+#if defined(FIXED_MULHELPER) && defined(L_mulhelper)
+FIXED_C_TYPE
+FIXED_MULHELPER (FIXED_C_TYPE a, FIXED_C_TYPE b, word_type satp)
+{
+  FIXED_C_TYPE c;
+  INT_C_TYPE x, y;
+
+#if defined (DINT_C_TYPE)
+  INT_C_TYPE z;
+  DINT_C_TYPE dx, dy, dz;
+  memcpy (&x, &a, FIXED_SIZE);
+  memcpy (&y, &b, FIXED_SIZE);
+  dx = (DINT_C_TYPE) x;
+  dy = (DINT_C_TYPE) y;
+  dz = dx * dy;
+  /* Round the result by adding (1 << (FBITS -1)).  */
+  dz += ((DINT_C_TYPE) 1 << (FBITS - 1));
+  dz = dz >> FBITS;
+  if (satp)
+    FIXED_SATURATE1 (&dz);
+
+  z = (INT_C_TYPE) dz;
+#if HAVE_PADDING_BITS
+  z = z << PADDING_BITS;
+  z = z >> PADDING_BITS;
+#endif
+  memcpy (&c, &z, FIXED_SIZE);
+  return c;
+
+#else /* No DINT_C_TYPE */
+  /* The result of multiplication expands to two INT_C_TYPE.  */
+  INTunion aa, bb;
+  INTunion a_high, a_low, b_high, b_low;
+  INTunion high_high, high_low, low_high, low_low;
+  INTunion r, s, temp1, temp2;
+  INT_C_TYPE carry = 0;
+  INT_C_TYPE z;
+
+  memcpy (&x, &a, FIXED_SIZE);
+  memcpy (&y, &b, FIXED_SIZE);
+
+  /* Decompose a and b.  */
+  aa.ll = x;
+  bb.ll = y;
+
+  a_high.s.low = aa.s.high;
+  a_high.s.high = 0;
+  a_low.s.low = aa.s.low;
+  a_low.s.high = 0;
+  b_high.s.low = bb.s.high;
+  b_high.s.high = 0;
+  b_low.s.low = bb.s.low;
+  b_low.s.high = 0;
+
+  /* Perform four multiplications.  */
+  low_low.ll = a_low.ll * b_low.ll;
+  low_high.ll = a_low.ll * b_high.ll;
+  high_low.ll = a_high.ll * b_low.ll;
+  high_high.ll = a_high.ll * b_high.ll;
+
+  /* Accumulate four results to {r, s}.  */
+  temp1.s.high = high_low.s.low;
+  temp1.s.low = 0;
+  s.ll = low_low.ll + temp1.ll;
+  if ((UINT_C_TYPE) s.ll < (UINT_C_TYPE) low_low.ll
+      || (UINT_C_TYPE) s.ll < (UINT_C_TYPE) temp1.ll)
+    carry ++; /* Carry.  */
+  temp1.ll = s.ll;
+  temp2.s.high = low_high.s.low;
+  temp2.s.low = 0;
+  s.ll = temp1.ll + temp2.ll;
+  if ((UINT_C_TYPE) s.ll < (UINT_C_TYPE) temp1.ll
+      || (UINT_C_TYPE) s.ll < (UINT_C_TYPE) temp2.ll)
+    carry ++; /* Carry.  */
+
+  temp1.s.low = high_low.s.high;
+  temp1.s.high = 0;
+  r.ll = high_high.ll + temp1.ll;
+  temp1.s.low = low_high.s.high;
+  temp1.s.high = 0;
+  r.ll = r.ll + temp1.ll + carry;
+
+#if MODE_UNSIGNED == 0
+  /* For signed types, we need to add neg(y) to r, if x < 0.  */
+  if (x < 0)
+    r.ll = r.ll - y;
+  /* We need to add neg(x) to r, if y < 0.  */
+  if (y < 0)
+    r.ll = r.ll - x;
+#endif
+
+  /* Round the result by adding (1 << (FBITS -1)).  */
+  temp1.ll = s.ll;
+  s.ll += ((INT_C_TYPE) 1 << (FBITS -1));
+  if ((UINT_C_TYPE) s.ll < (UINT_C_TYPE) temp1.ll
+      || (UINT_C_TYPE) s.ll < (UINT_C_TYPE) ((INT_C_TYPE) 1 << (FBITS -1)))
+    r.ll += 1;
+
+  /* Shift right the result by FBITS.  */
+#if FBITS == FIXED_WIDTH
+  /* This happens only for unsigned types without any padding bits.
+     So, it is safe to set r.ll to 0 as it is logically shifted right.  */
+  s.ll = r.ll;
+  r.ll = 0;
+#else
+  s.ll = ((UINT_C_TYPE)s.ll) >> FBITS;
+  temp1.ll = r.ll << (FIXED_WIDTH - FBITS);
+  s.ll = s.ll | temp1.ll;
+  r.ll = r.ll >> FBITS;
+#endif
+
+  if (satp)
+    FIXED_SATURATE2 (&r.ll, &s.ll);
+
+  z = (INT_C_TYPE) s.ll;
+#if HAVE_PADDING_BITS
+  z = z << PADDING_BITS;
+  z = z >> PADDING_BITS;
+#endif
+  memcpy (&c, &z, FIXED_SIZE);
+  return c;
+#endif
+}
+#endif /* FIXED_MULHELPER */
+
+#if defined(FIXED_MUL) && defined(L_mul)
+FIXED_C_TYPE
+FIXED_MUL (FIXED_C_TYPE a, FIXED_C_TYPE b)
+{
+  return FIXED_MULHELPER (a, b, 0);
+}
+#endif /* FIXED_MUL */
+
+#if defined(FIXED_SSMUL) && defined(L_ssmul)
+FIXED_C_TYPE
+FIXED_SSMUL (FIXED_C_TYPE a, FIXED_C_TYPE b)
+{
+  return FIXED_MULHELPER (a, b, 1);
+}
+#endif /* FIXED_SSMUL */
+
+#if defined(FIXED_USMUL) && defined(L_usmul)
+FIXED_C_TYPE
+FIXED_USMUL (FIXED_C_TYPE a, FIXED_C_TYPE b)
+{
+  return FIXED_MULHELPER (a, b, 1);
+}
+#endif /* FIXED_USMUL */
+
+#if defined(FIXED_DIVHELPER) && defined(L_divhelper)
+FIXED_C_TYPE
+FIXED_DIVHELPER (FIXED_C_TYPE a, FIXED_C_TYPE b, word_type satp)
+{
+  FIXED_C_TYPE c;
+  INT_C_TYPE x, y;
+  INT_C_TYPE z;
+
+#if defined (DINT_C_TYPE)
+  DINT_C_TYPE dx, dy, dz;
+  memcpy (&x, &a, FIXED_SIZE);
+  memcpy (&y, &b, FIXED_SIZE);
+  dx = (DINT_C_TYPE) x;
+  dy = (DINT_C_TYPE) y;
+  dx = dx << FBITS;
+  dz = dx / dy;
+  if (satp)
+    FIXED_SATURATE1 (&dz);
+  z = (INT_C_TYPE) dz;
+#if HAVE_PADDING_BITS
+  z = z << PADDING_BITS;
+  z = z >> PADDING_BITS;
+#endif
+  memcpy (&c, &z, FIXED_SIZE);
+  return c;
+
+#else /* No DINT_C_TYPE */
+  INT_C_TYPE pos_a, pos_b, r, s;
+  INT_C_TYPE quo_r, quo_s, mod, temp;
+  word_type i;
+#if MODE_UNSIGNED == 0
+  word_type num_of_neg = 0;
+#endif
+
+  memcpy (&x, &a, FIXED_SIZE);
+  memcpy (&y, &b, FIXED_SIZE);
+  pos_a = x;
+  pos_b = y;
+
+#if MODE_UNSIGNED == 0
+  /* If a < 0, negate a.  */
+  if (pos_a < 0)
+    {
+      pos_a = -pos_a;
+      num_of_neg ++;
+    }
+  /* If b < 0, negate b.  */
+  if (pos_b < 0)
+    {
+      pos_b = -pos_b;
+      num_of_neg ++;
+    }
+#endif
+
+  /* Left shift pos_a to {r, s} by FBITS.  */
+#if FBITS == FIXED_WIDTH
+  /* This happens only for unsigned types without any padding bits.  */
+  r = pos_a;
+  s = 0;
+#else
+  s = pos_a << FBITS;
+  r = pos_a >> (FIXED_WIDTH - FBITS);
+#endif
+
+  /* Unsigned divide r by pos_b to quo_r.  The remainder is in mod.  */
+  quo_r = (UINT_C_TYPE)r / (UINT_C_TYPE)pos_b;
+  mod = (UINT_C_TYPE)r % (UINT_C_TYPE)pos_b;
+  quo_s = 0;
+
+  for (i = 0; i < FIXED_WIDTH; i++)
+    {
+      /* Record the leftmost bit of mod.  */
+      word_type leftmost_mode = (mod >> (FIXED_WIDTH - 1)) & 1;
+      /* Shift left mod by 1 bit.  */
+      mod = mod << 1;
+      /* Test the leftmost bit of s to add to mod.  */
+      if ((s >> (FIXED_WIDTH - 1)) & 1)
+	mod ++;
+      /* Shift left quo_s by 1 bit.  */
+      quo_s = quo_s << 1;
+      /* Try to calculate (mod - pos_b).  */
+      temp = mod - pos_b;
+      if (leftmost_mode || (UINT_C_TYPE)mod >= (UINT_C_TYPE)pos_b)
+	{
+	  quo_s ++;
+	  mod = temp;
+	}
+      /* Shift left s by 1 bit.  */
+      s = s << 1;
+    }
+
+#if MODE_UNSIGNED == 0
+    if (num_of_neg == 1)
+      {
+	quo_s = -quo_s;
+	if (quo_s == 0)
+	  quo_r = -quo_r;
+	else
+	  quo_r = ~quo_r;
+      }
+#endif
+  if (satp)
+    FIXED_SATURATE2 (&quo_r, &quo_s);
+  z = quo_s;
+#if HAVE_PADDING_BITS
+  z = z << PADDING_BITS;
+  z = z >> PADDING_BITS;
+#endif
+  memcpy (&c, &z, FIXED_SIZE);
+  return c;
+#endif
+}
+#endif /* FIXED_DIVHELPER */
+
+#if defined(FIXED_DIV) && defined(L_div)
+FIXED_C_TYPE
+FIXED_DIV (FIXED_C_TYPE a, FIXED_C_TYPE b)
+{
+  return FIXED_DIVHELPER (a, b, 0);
+}
+#endif /* FIXED_DIV */
+
+
+#if defined(FIXED_UDIV) && defined(L_udiv)
+FIXED_C_TYPE
+FIXED_UDIV (FIXED_C_TYPE a, FIXED_C_TYPE b)
+{
+  return FIXED_DIVHELPER (a, b, 0);
+}
+#endif /* FIXED_UDIV */
+
+#if defined(FIXED_SSDIV) && defined(L_ssdiv)
+FIXED_C_TYPE
+FIXED_SSDIV (FIXED_C_TYPE a, FIXED_C_TYPE b)
+{
+  return FIXED_DIVHELPER (a, b, 1);
+}
+#endif /* FIXED_SSDIV */
+
+#if defined(FIXED_USDIV) && defined(L_usdiv)
+FIXED_C_TYPE
+FIXED_USDIV (FIXED_C_TYPE a, FIXED_C_TYPE b)
+{
+  return FIXED_DIVHELPER (a, b, 1);
+}
+#endif /* FIXED_USDIV */
+
+#if defined(FIXED_NEG) && defined(L_neg)
+FIXED_C_TYPE
+FIXED_NEG (FIXED_C_TYPE a)
+{
+  FIXED_C_TYPE c;
+  INT_C_TYPE x, z;
+  memcpy (&x, &a, FIXED_SIZE);
+  z = -x;
+#if HAVE_PADDING_BITS
+  z = z << PADDING_BITS;
+  z = z >> PADDING_BITS;
+#endif
+  memcpy (&c, &z, FIXED_SIZE);
+  return c;
+}
+#endif /* FIXED_NEG */
+
+#if defined(FIXED_SSNEG) && defined(L_ssneg)
+FIXED_C_TYPE
+FIXED_SSNEG (FIXED_C_TYPE a)
+{
+  FIXED_C_TYPE c;
+  INT_C_TYPE x, y, z;
+  memcpy (&y, &a, FIXED_SIZE);
+  x = 0;
+  z = x - y;
+  if (((x ^ y) >> I_F_BITS) & 1)
+    {
+      if (((z ^ x) >> I_F_BITS) & 1)
+        {
+          z = 1;
+          z = z << I_F_BITS;
+          if (x >= 0)
+            z--;
+        }
+    }
+#if HAVE_PADDING_BITS
+  z = z << PADDING_BITS;
+  z = z >> PADDING_BITS;
+#endif
+  memcpy (&c, &z, FIXED_SIZE);
+  return c;
+}
+#endif /* FIXED_SSNEG */
+
+#if defined(FIXED_USNEG) && defined(L_usneg)
+FIXED_C_TYPE
+FIXED_USNEG (FIXED_C_TYPE a __attribute__ ((__unused__)))
+{
+  FIXED_C_TYPE c;
+  INT_C_TYPE z;
+  z = 0;
+  memcpy (&c, &z, FIXED_SIZE);
+  return c;
+}
+#endif /* FIXED_USNEG */
+
+#if defined(FIXED_ASHLHELPER) && defined(L_ashlhelper)
+FIXED_C_TYPE
+FIXED_ASHLHELPER (FIXED_C_TYPE a, word_type b, word_type satp)
+{
+  FIXED_C_TYPE c;
+  INT_C_TYPE x, z;
+
+#if defined (DINT_C_TYPE)
+  DINT_C_TYPE dx, dz;
+  memcpy (&x, &a, FIXED_SIZE);
+  dx = (DINT_C_TYPE) x;
+  if (b >= FIXED_WIDTH)
+    dz = dx << FIXED_WIDTH;
+  else
+    dz = dx << b;
+  if (satp)
+    FIXED_SATURATE1 (&dz);
+  z = (INT_C_TYPE) dz;
+#if HAVE_PADDING_BITS
+  z = z << PADDING_BITS;
+  z = z >> PADDING_BITS;
+#endif
+  memcpy (&c, &z, FIXED_SIZE);
+  return c;
+
+#else /* No DINT_C_TYPE */
+  INT_C_TYPE r, s;
+  memcpy (&x, &a, FIXED_SIZE);
+  /* We need to shift left x by b bits to {r, s}.  */
+  if (b >= FIXED_WIDTH)
+    {
+      r = b;
+      s = 0;
+    }
+  else
+    {
+      s = x << b;
+      r = x >> (FIXED_WIDTH - b);
+    }
+  if (satp)
+    FIXED_SATURATE2 (&r, &s);
+  z = s;
+#if HAVE_PADDING_BITS
+  z = z << PADDING_BITS;
+  z = z >> PADDING_BITS;
+#endif
+  memcpy (&c, &z, FIXED_SIZE);
+  return c;
+#endif
+}
+#endif /* FIXED_ASHLHELPER */
+
+#if defined(FIXED_ASHL) && defined(L_ashl)
+FIXED_C_TYPE
+FIXED_ASHL (FIXED_C_TYPE a, word_type b)
+{
+  return FIXED_ASHLHELPER (a, b, 0);
+}
+#endif /* FIXED_ASHL */
+
+#if defined(FIXED_ASHR) && defined(L_ashr)
+FIXED_C_TYPE
+FIXED_ASHR (FIXED_C_TYPE a, word_type b)
+{
+  FIXED_C_TYPE c;
+  INT_C_TYPE x, z;
+  memcpy (&x, &a, FIXED_SIZE);
+  z = x >> b;
+#if HAVE_PADDING_BITS
+  z = z << PADDING_BITS;
+  z = z >> PADDING_BITS;
+#endif
+  memcpy (&c, &z, FIXED_SIZE);
+  return c;
+}
+#endif /* FIXED_ASHR */
+
+#if defined(FIXED_LSHR) && defined(L_lshr)
+FIXED_C_TYPE
+FIXED_LSHR (FIXED_C_TYPE a, word_type b)
+{
+  FIXED_C_TYPE c;
+  INT_C_TYPE x, z;
+  memcpy (&x, &a, FIXED_SIZE);
+  z = x >> b;
+#if HAVE_PADDING_BITS
+  z = z << PADDING_BITS;
+  z = z >> PADDING_BITS;
+#endif
+  memcpy (&c, &z, FIXED_SIZE);
+  return c;
+}
+#endif /* FIXED_LSHR */
+
+#if defined(FIXED_SSASHL) && defined(L_ssashl)
+FIXED_C_TYPE
+FIXED_SSASHL (FIXED_C_TYPE a, word_type b)
+{
+  return FIXED_ASHLHELPER (a, b, 1);
+}
+#endif /* FIXED_SSASHL */
+
+#if defined(FIXED_USASHL) && defined(L_usashl)
+FIXED_C_TYPE
+FIXED_USASHL (FIXED_C_TYPE a, word_type b)
+{
+  return FIXED_ASHLHELPER (a, b, 1);
+}
+#endif /* FIXED_USASHL */
+
+#if defined(FIXED_CMP) && defined(L_cmp)
+word_type
+FIXED_CMP (FIXED_C_TYPE a, FIXED_C_TYPE b)
+{
+  INT_C_TYPE x, y;
+  memcpy (&x, &a, FIXED_SIZE);
+  memcpy (&y, &b, FIXED_SIZE);
+
+  if (x < y)
+    return 0;
+  else if (x > y)
+    return 2;
+
+  return 1;
+}
+#endif /* FIXED_CMP */
+
+/* Fixed -> Fixed.  */
+#if defined(FRACT) && defined(L_fract) && FROM_TYPE == 4 && TO_TYPE == 4
+TO_FIXED_C_TYPE
+FRACT (FROM_FIXED_C_TYPE a)
+{
+  TO_FIXED_C_TYPE c;
+  FROM_INT_C_TYPE x;
+  TO_INT_C_TYPE z;
+  int shift_amount;
+  memcpy (&x, &a, FROM_FIXED_SIZE);
+#if TO_FBITS > FROM_FBITS  /* Need left shift.  */
+  shift_amount = TO_FBITS - FROM_FBITS;
+  z = (TO_INT_C_TYPE) x;
+  z = z << shift_amount;
+#else /* TO_FBITS <= FROM_FBITS.  Need right Shift.  */
+  shift_amount = FROM_FBITS - TO_FBITS;
+  x = x >> shift_amount;
+  z = (TO_INT_C_TYPE) x;
+#endif /* TO_FBITS > FROM_FBITS  */
+
+#if TO_HAVE_PADDING_BITS
+  z = z << TO_PADDING_BITS;
+  z = z >> TO_PADDING_BITS;
+#endif
+  memcpy (&c, &z, TO_FIXED_SIZE);
+  return c;
+}
+#endif /* FRACT && FROM_TYPE == 4 && TO_TYPE == 4  */
+
+/* Fixed -> Fixed with saturation.  */
+#if defined(SATFRACT) && defined(L_satfract) && FROM_TYPE == 4 && TO_TYPE == 4
+TO_FIXED_C_TYPE
+SATFRACT (FROM_FIXED_C_TYPE a)
+{
+  TO_FIXED_C_TYPE c;
+  TO_INT_C_TYPE z;
+  FROM_INT_C_TYPE x;
+#if FROM_MODE_UNSIGNED == 0
+  BIG_SINT_C_TYPE high, low;
+  BIG_SINT_C_TYPE max_high, max_low;
+  BIG_SINT_C_TYPE min_high, min_low;
+#else
+  BIG_UINT_C_TYPE high, low;
+  BIG_UINT_C_TYPE max_high, max_low;
+  BIG_UINT_C_TYPE min_high, min_low;
+#endif
+#if TO_FBITS > FROM_FBITS
+  BIG_UINT_C_TYPE utemp;
+#endif
+#if TO_MODE_UNSIGNED == 0
+  BIG_SINT_C_TYPE stemp;
+#endif
+#if TO_FBITS != FROM_FBITS
+  int shift_amount;
+#endif
+  memcpy (&x, &a, FROM_FIXED_SIZE);
+
+  /* Step 1. We need to store x to {high, low}.  */
+#if FROM_MODE_UNSIGNED == 0
+  low = (BIG_SINT_C_TYPE) x;
+  if (x < 0)
+    high = -1;
+  else
+    high = 0;
+#else
+  low = (BIG_UINT_C_TYPE) x;
+  high = 0;
+#endif
+
+  /* Step 2. We need to shift {high, low}.  */
+#if TO_FBITS > FROM_FBITS /* Left shift.  */
+  shift_amount = TO_FBITS - FROM_FBITS;
+  utemp = (BIG_UINT_C_TYPE) low;
+  utemp = utemp >> (BIG_WIDTH - shift_amount);
+  high = ((BIG_UINT_C_TYPE)(high << shift_amount)) | utemp;
+  low = low << shift_amount;
+#elif TO_FBITS < FROM_FBITS /* Right shift.  */
+  shift_amount = FROM_FBITS - TO_FBITS;
+  low = low >> shift_amount;
+#endif
+
+  /* Step 3. Compare {high, low} with max and  min of TO_FIXED_C_TYPE.  */
+  max_high = 0;
+#if BIG_WIDTH > TO_FIXED_WIDTH || TO_MODE_UNSIGNED == 0 || TO_HAVE_PADDING_BITS
+  max_low = (BIG_UINT_C_TYPE)1 << TO_I_F_BITS;
+  max_low = max_low - 1;
+#else
+  max_low = -1;
+#endif
+
+#if TO_MODE_UNSIGNED == 0
+  min_high = -1;
+  stemp = (BIG_SINT_C_TYPE)1 << (BIG_WIDTH - 1);
+  stemp = stemp >> (BIG_WIDTH - 1 - TO_I_F_BITS);
+  min_low = stemp;
+#else
+  min_high = 0;
+  min_low = 0;
+#endif
+
+#if FROM_MODE_UNSIGNED == 0 && TO_MODE_UNSIGNED == 0
+  /* Signed -> Signed.  */
+  if ((BIG_SINT_C_TYPE) high > (BIG_SINT_C_TYPE) max_high
+      || ((BIG_SINT_C_TYPE) high == (BIG_SINT_C_TYPE) max_high
+	  && (BIG_UINT_C_TYPE) low > (BIG_UINT_C_TYPE) max_low))
+    low = max_low; /* Maximum.  */
+  else if ((BIG_SINT_C_TYPE) high < (BIG_SINT_C_TYPE) min_high
+	   || ((BIG_SINT_C_TYPE) high == (BIG_SINT_C_TYPE) min_high
+	       && (BIG_UINT_C_TYPE) low < (BIG_UINT_C_TYPE) min_low))
+    low = min_low; /* Minimum.  */
+#elif FROM_MODE_UNSIGNED == 1 && TO_MODE_UNSIGNED == 1
+  /* Unigned -> Unsigned.  */
+  if ((BIG_UINT_C_TYPE) high > (BIG_UINT_C_TYPE) max_high
+      || ((BIG_UINT_C_TYPE) high == (BIG_UINT_C_TYPE) max_high
+	  && (BIG_UINT_C_TYPE) low > (BIG_UINT_C_TYPE) max_low))
+    low = max_low; /* Maximum.  */
+#elif FROM_MODE_UNSIGNED == 0 && TO_MODE_UNSIGNED == 1
+  /* Signed -> Unsigned.  */
+  if (x < 0)
+    low = 0; /* Minimum.  */
+  else if ((BIG_UINT_C_TYPE) high > (BIG_UINT_C_TYPE) max_high
+	   || ((BIG_UINT_C_TYPE) high == (BIG_UINT_C_TYPE) max_high
+	       && (BIG_UINT_C_TYPE) low > (BIG_UINT_C_TYPE) max_low))
+    low = max_low; /* Maximum.  */
+#elif FROM_MODE_UNSIGNED == 1 && TO_MODE_UNSIGNED == 0
+  /* Unsigned -> Signed.  */
+  if ((BIG_SINT_C_TYPE) high < 0)
+    low = max_low; /* Maximum.  */
+  else if ((BIG_SINT_C_TYPE) high > (BIG_SINT_C_TYPE) max_high
+	   || ((BIG_SINT_C_TYPE) high == (BIG_SINT_C_TYPE) max_high
+	       && (BIG_UINT_C_TYPE) low > (BIG_UINT_C_TYPE) max_low))
+    low = max_low; /* Maximum.  */
+#endif
+
+  /* Step 4. Store the result.  */
+  z = (TO_INT_C_TYPE) low;
+#if TO_HAVE_PADDING_BITS
+  z = z << TO_PADDING_BITS;
+  z = z >> TO_PADDING_BITS;
+#endif
+  memcpy (&c, &z, TO_FIXED_SIZE);
+  return c;
+}
+#endif /* defined(SATFRACT) && FROM_TYPE == 4 && TO_TYPE == 4  */
+
+/* Fixed -> Int.  */
+#if defined(FRACT) && defined(L_fract) && FROM_TYPE == 4 && TO_TYPE == 1
+TO_INT_C_TYPE
+FRACT (FROM_FIXED_C_TYPE a)
+{
+  FROM_INT_C_TYPE x;
+  TO_INT_C_TYPE z;
+  FROM_INT_C_TYPE i = 0;
+  memcpy (&x, &a, FROM_FIXED_SIZE);
+
+#if FROM_MODE_UNSIGNED == 0
+  if (x < 0)
+    {
+#if FROM_FIXED_WIDTH == FROM_FBITS
+      if (x != 0)
+	i = 1;
+#else
+      if (((FROM_INT_C_TYPE)(x << (FROM_FIXED_WIDTH - FROM_FBITS))) != 0)
+	i = 1;
+#endif
+    }
+#endif
+
+#if FROM_FIXED_WIDTH == FROM_FBITS
+  x = 0;
+#else
+  x = x >> FROM_FBITS;
+#endif
+  x = x + i;
+  z = (TO_INT_C_TYPE) x;
+  return z;
+}
+#endif /* defined(FRACT) && FROM_TYPE == 4 && TO_TYPE == 1  */
+
+/* Fixed -> Unsigned int.  */
+#if defined(FRACTUNS) && defined(L_fractuns) && FROM_TYPE == 4 && TO_TYPE == 2
+TO_INT_C_TYPE
+FRACTUNS (FROM_FIXED_C_TYPE a)
+{
+  FROM_INT_C_TYPE x;
+  TO_INT_C_TYPE z;
+  FROM_INT_C_TYPE i = 0;
+  memcpy (&x, &a, FROM_FIXED_SIZE);
+
+#if FROM_MODE_UNSIGNED == 0
+  if (x < 0)
+    {
+#if FROM_FIXED_WIDTH == FROM_FBITS
+      if (x != 0)
+	i = 1;
+#else
+      if (((FROM_INT_C_TYPE)(x << (FROM_FIXED_WIDTH - FROM_FBITS))) != 0)
+	i = 1;
+#endif
+    }
+#endif
+
+#if FROM_FIXED_WIDTH == FROM_FBITS
+  x = 0;
+#else
+  x = x >> FROM_FBITS;
+#endif
+  x = x + i;
+  z = (TO_INT_C_TYPE) x;
+  return z;
+}
+#endif /* defined(FRACTUNS) && FROM_TYPE == 4 && TO_TYPE == 2  */
+
+/* Int -> Fixed.  */
+#if defined(FRACT) && defined(L_fract) && FROM_TYPE == 1 && TO_TYPE == 4
+TO_FIXED_C_TYPE
+FRACT (FROM_INT_C_TYPE a)
+{
+  TO_FIXED_C_TYPE c;
+  TO_INT_C_TYPE z;
+  z = (TO_INT_C_TYPE) a;
+#if TO_FIXED_WIDTH == TO_FBITS
+  z = 0;
+#else
+  z = z << TO_FBITS;
+#endif
+#if TO_HAVE_PADDING_BITS
+  z = z << TO_PADDING_BITS;
+  z = z >> TO_PADDING_BITS;
+#endif
+  memcpy (&c, &z, TO_FIXED_SIZE);
+  return c;
+}
+#endif /* defined(FRACT) && FROM_TYPE == 1 && TO_TYPE == 4  */
+
+/* Signed int -> Fixed with saturation.  */
+#if defined(SATFRACT) && defined(L_satfract) &&FROM_TYPE == 1 && TO_TYPE == 4
+TO_FIXED_C_TYPE
+SATFRACT (FROM_INT_C_TYPE a)
+{
+  TO_FIXED_C_TYPE c;
+  TO_INT_C_TYPE z;
+  FROM_INT_C_TYPE x = a;
+  BIG_SINT_C_TYPE high, low;
+  BIG_SINT_C_TYPE max_high, max_low;
+  BIG_SINT_C_TYPE min_high, min_low;
+#if TO_MODE_UNSIGNED == 0
+  BIG_SINT_C_TYPE stemp;
+#endif
+#if BIG_WIDTH != TO_FBITS
+  BIG_UINT_C_TYPE utemp;
+  int shift_amount;
+#endif
+
+  /* Step 1. We need to store x to {high, low}.  */
+  low = (BIG_SINT_C_TYPE) x;
+  if (x < 0)
+    high = -1;
+  else
+    high = 0;
+
+  /* Step 2. We need to left shift {high, low}.  */
+#if BIG_WIDTH == TO_FBITS
+  high = low;
+  low = 0;
+#else
+  shift_amount = TO_FBITS;
+  utemp = (BIG_UINT_C_TYPE) low;
+  utemp = utemp >> (BIG_WIDTH - shift_amount);
+  high = ((BIG_UINT_C_TYPE)(high << shift_amount)) | utemp;
+  low = low << shift_amount;
+#endif
+
+  /* Step 3. Compare {high, low} with max and  min of TO_FIXED_C_TYPE.  */
+  max_high = 0;
+#if BIG_WIDTH > TO_FIXED_WIDTH || TO_MODE_UNSIGNED == 0 || TO_HAVE_PADDING_BITS
+  max_low = (BIG_UINT_C_TYPE)1 << TO_I_F_BITS;
+  max_low = max_low - 1;
+#else
+  max_low = -1;
+#endif
+
+#if TO_MODE_UNSIGNED == 0
+  min_high = -1;
+  stemp = (BIG_SINT_C_TYPE)1 << (BIG_WIDTH - 1);
+  stemp = stemp >> (BIG_WIDTH - 1 - TO_I_F_BITS);
+  min_low = stemp;
+#else
+  min_high = 0;
+  min_low = 0;
+#endif
+
+#if TO_MODE_UNSIGNED == 0
+  /* Signed -> Signed.  */
+  if ((BIG_SINT_C_TYPE) high > (BIG_SINT_C_TYPE) max_high
+      || ((BIG_SINT_C_TYPE) high == (BIG_SINT_C_TYPE) max_high
+          && (BIG_UINT_C_TYPE) low > (BIG_UINT_C_TYPE) max_low))
+    low = max_low; /* Maximum.  */
+  else if ((BIG_SINT_C_TYPE) high < (BIG_SINT_C_TYPE) min_high
+           || ((BIG_SINT_C_TYPE) high == (BIG_SINT_C_TYPE) min_high
+               && (BIG_UINT_C_TYPE) low < (BIG_UINT_C_TYPE) min_low))
+    low = min_low; /* Minimum.  */
+#else
+  /* Signed -> Unsigned.  */
+  if (x < 0)
+    low = 0; /* Minimum.  */
+  else if ((BIG_UINT_C_TYPE) high > (BIG_UINT_C_TYPE) max_high
+           || ((BIG_UINT_C_TYPE) high == (BIG_UINT_C_TYPE) max_high
+               && (BIG_UINT_C_TYPE) low > (BIG_UINT_C_TYPE) max_low))
+    low = max_low; /* Maximum.  */
+#endif
+
+  /* Step 4. Store the result.  */
+  z = (TO_INT_C_TYPE) low;
+#if TO_HAVE_PADDING_BITS
+  z = z << TO_PADDING_BITS;
+  z = z >> TO_PADDING_BITS;
+#endif
+  memcpy (&c, &z, TO_FIXED_SIZE);
+  return c;
+}
+#endif /* defined(SATFRACT) && FROM_TYPE == 1 && TO_TYPE == 4  */
+
+/* Unsigned int -> Fixed.  */
+#if defined(FRACTUNS) && defined(L_fractuns) &&FROM_TYPE == 2 && TO_TYPE == 4
+TO_FIXED_C_TYPE
+FRACTUNS (FROM_INT_C_TYPE a)
+{
+  TO_FIXED_C_TYPE c;
+  TO_INT_C_TYPE z;
+  z = (TO_INT_C_TYPE) a;
+#if TO_FIXED_WIDTH == TO_FBITS
+  z = 0;
+#else
+  z = z << TO_FBITS;
+#endif
+#if TO_HAVE_PADDING_BITS
+  z = z << TO_PADDING_BITS;
+  z = z >> TO_PADDING_BITS;
+#endif
+  memcpy (&c, &z, TO_FIXED_SIZE);
+  return c;
+}
+#endif /* defined(FRACTUNS) && FROM_TYPE == 2 && TO_TYPE == 4  */
+
+/* Unsigned int -> Fixed with saturation.  */
+#if defined(SATFRACTUNS) && defined(L_satfractuns) && FROM_TYPE == 2 && TO_TYPE == 4
+TO_FIXED_C_TYPE
+SATFRACTUNS (FROM_INT_C_TYPE a)
+{
+  TO_FIXED_C_TYPE c;
+  TO_INT_C_TYPE z;
+  FROM_INT_C_TYPE x = a;
+  BIG_UINT_C_TYPE high, low;
+  BIG_UINT_C_TYPE max_high, max_low;
+#if BIG_WIDTH != TO_FBITS
+  BIG_UINT_C_TYPE utemp;
+  int shift_amount;
+#endif
+
+  /* Step 1. We need to store x to {high, low}.  */
+  low = (BIG_UINT_C_TYPE) x;
+  high = 0;
+
+  /* Step 2. We need to left shift {high, low}.  */
+#if BIG_WIDTH == TO_FBITS
+  high = low;
+  low = 0;
+#else
+  shift_amount = TO_FBITS;
+  utemp = (BIG_UINT_C_TYPE) low;
+  utemp = utemp >> (BIG_WIDTH - shift_amount);
+  high = ((BIG_UINT_C_TYPE)(high << shift_amount)) | utemp;
+  low = low << shift_amount;
+#endif
+
+  /* Step 3. Compare {high, low} with max and  min of TO_FIXED_C_TYPE.  */
+  max_high = 0;
+#if BIG_WIDTH > TO_FIXED_WIDTH || TO_MODE_UNSIGNED == 0 || TO_HAVE_PADDING_BITS
+  max_low = (BIG_UINT_C_TYPE)1 << TO_I_F_BITS;
+  max_low = max_low - 1;
+#else
+  max_low = -1;
+#endif
+
+#if TO_MODE_UNSIGNED == 1
+  /* Unigned -> Unsigned.  */
+  if ((BIG_UINT_C_TYPE) high > (BIG_UINT_C_TYPE) max_high
+      || ((BIG_UINT_C_TYPE) high == (BIG_UINT_C_TYPE) max_high
+          && (BIG_UINT_C_TYPE) low > (BIG_UINT_C_TYPE) max_low))
+    low = max_low; /* Maximum.  */
+#else
+  /* Unsigned -> Signed.  */
+  if ((BIG_SINT_C_TYPE) high < 0)
+    low = max_low; /* Maximum.  */
+  else if ((BIG_SINT_C_TYPE) high > (BIG_SINT_C_TYPE) max_high
+           || ((BIG_SINT_C_TYPE) high == (BIG_SINT_C_TYPE) max_high
+               && (BIG_UINT_C_TYPE) low > (BIG_UINT_C_TYPE) max_low))
+    low = max_low; /* Maximum.  */
+#endif
+
+  /* Step 4. Store the result.  */
+  z = (TO_INT_C_TYPE) low;
+#if TO_HAVE_PADDING_BITS
+  z = z << TO_PADDING_BITS;
+  z = z >> TO_PADDING_BITS;
+#endif
+  memcpy (&c, &z, TO_FIXED_SIZE);
+  return c;
+}
+#endif /* defined(SATFRACTUNS) && FROM_TYPE == 2 && TO_TYPE == 4  */
+
+/* Fixed -> Float.  */
+#if defined(FRACT) && defined(L_fract) && FROM_TYPE == 4 && TO_TYPE == 3
+TO_FLOAT_C_TYPE
+FRACT (FROM_FIXED_C_TYPE a)
+{
+  FROM_INT_C_TYPE x;
+  TO_FLOAT_C_TYPE z;
+  memcpy (&x, &a, FROM_FIXED_SIZE);
+  z = (TO_FLOAT_C_TYPE) x;
+  z = z / BASE;
+  return z;
+}
+#endif /* defined(FRACT) && FROM_TYPE == 4 && TO_TYPE == 3  */
+
+/* Float -> Fixed.  */
+#if defined(FRACT) && defined(L_fract) && FROM_TYPE == 3 && TO_TYPE == 4
+TO_FIXED_C_TYPE
+FRACT (FROM_FLOAT_C_TYPE a)
+{
+  FROM_FLOAT_C_TYPE temp;
+  TO_INT_C_TYPE z;
+  TO_FIXED_C_TYPE c;
+
+  temp = a * BASE;
+  z = (TO_INT_C_TYPE) temp;
+#if TO_HAVE_PADDING_BITS
+  z = z << TO_PADDING_BITS;
+  z = z >> TO_PADDING_BITS;
+#endif
+  memcpy (&c, &z, TO_FIXED_SIZE);
+  return c;
+}
+#endif /* defined(FRACT) && FROM_TYPE == 3 && TO_TYPE == 4  */
+
+/* Float -> Fixed with saturation.  */
+#if defined(SATFRACT) && defined(L_satfract) && FROM_TYPE == 3 && TO_TYPE == 4
+TO_FIXED_C_TYPE
+SATFRACT (FROM_FLOAT_C_TYPE a)
+{
+  FROM_FLOAT_C_TYPE temp;
+  TO_INT_C_TYPE z;
+  TO_FIXED_C_TYPE c;
+
+  if (a >= FIXED_MAX)
+    {
+#if TO_MODE_UNSIGNED == 0 || TO_HAVE_PADDING_BITS
+      z = (TO_INT_C_TYPE)1 << TO_I_F_BITS;
+      z = z - 1;
+#else
+      z = -1;
+#endif
+    }
+  else if (a <= FIXED_MIN)
+    {
+#if TO_MODE_UNSIGNED == 0
+      z = (TO_INT_C_TYPE)1 << TO_I_F_BITS;
+#else
+      z = 0;
+#endif
+    }
+  else
+    {
+      temp = a * BASE;
+      z = (TO_INT_C_TYPE) temp;
+    }
+
+#if TO_HAVE_PADDING_BITS
+  z = z << TO_PADDING_BITS;
+  z = z >> TO_PADDING_BITS;
+#endif
+  memcpy (&c, &z, TO_FIXED_SIZE);
+  return c;
+}
+#endif /* defined(SATFRACT) && FROM_TYPE == 3 && TO_TYPE == 4  */
+