[bpt/guile.git] / libguile / ramap.c

/*	Copyright (C) 1996 Free Software Foundation, Inc.
 * 
 * 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, 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 software; see the file COPYING.  If not, write to
 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * As a special exception, the Free Software Foundation gives permission
 * for additional uses of the text contained in its release of GUILE.
 *
 * The exception is that, if you link the GUILE library with other files
 * to produce an executable, this does not by itself cause the
 * resulting executable to be covered by the GNU General Public License.
 * Your use of that executable is in no way restricted on account of
 * linking the GUILE library code into it.
 *
 * This exception does not however invalidate any other reasons why
 * the executable file might be covered by the GNU General Public License.
 *
 * This exception applies only to the code released by the
 * Free Software Foundation under the name GUILE.  If you copy
 * code from other Free Software Foundation releases into a copy of
 * GUILE, as the General Public License permits, the exception does
 * not apply to the code that you add in this way.  To avoid misleading
 * anyone as to the status of such modified files, you must delete
 * this exception notice from them.
 *
 * If you write modifications of your own for GUILE, it is your choice
 * whether to permit this exception to apply to your modifications.
 * If you do not wish that, delete this exception notice.  
 */
\f


\f

#include <stdio.h>
#include "_scm.h"
#include "unif.h"
#include "smob.h"
#include "chars.h"
#include "eq.h"
#include "eval.h"
#include "feature.h"

#include "ramap.h"
\f

#ifdef ARRAYS

typedef struct
{
  char *name;
  SCM sproc;
  int (*vproc) ();
} ra_iproc;

static ra_iproc ra_rpsubrs[];
static ra_iproc ra_asubrs[];

#define BVE_REF(a, i) ((SCM_VELTS(a)[(i)/SCM_LONG_BIT] & (1L<<((i)%SCM_LONG_BIT))) ? 1 : 0)
#define BVE_SET(a, i) (SCM_VELTS(a)[(i)/SCM_LONG_BIT] |= (1L<<((i)%SCM_LONG_BIT)))
#define BVE_CLR(a, i) (SCM_VELTS(a)[(i)/SCM_LONG_BIT] &= ~(1L<<((i)%SCM_LONG_BIT)))

/* Fast, recycling scm_vector ref */
#define RVREF(ra, i, e) (e = scm_cvref(ra, i, e))

/* #define RVREF(ra, i, e) (scm_cvref(ra, i, SCM_UNDEFINED)) to turn off */

/* IVDEP means "ignore scm_vector dependencies", meaning we guarantee that
   elements of scm_vector operands are not aliased */
#ifdef _UNICOS
#define IVDEP(test, line) if (test) {_Pragma("ivdep"); line} else {line}
#else
#define IVDEP(test, line) line
#endif

\f

/* inds must be a uvect or ivect, no check. */

#ifdef __STDC__
static scm_sizet 
cind (SCM ra, SCM inds)
#else
static scm_sizet 
cind (ra, inds)
     SCM ra;
     SCM inds;
#endif
{
  scm_sizet i;
  int k;
  long *ve = SCM_VELTS (inds);
  if (!SCM_ARRAYP (ra))
    return *ve;
  i = SCM_ARRAY_BASE (ra);
  for (k = 0; k < SCM_ARRAY_NDIM (ra); k++)
    i += (ve[k] - SCM_ARRAY_DIMS (ra)[k].lbnd) * SCM_ARRAY_DIMS (ra)[k].inc;
  return i;
}


/* Checker for scm_array mapping functions:
   return values: 4 --> shapes, increments, and bases are the same;
   3 --> shapes and increments are the same;
   2 --> shapes are the same;
   1 --> ras are at least as big as ra0;
   0 --> no match.
   */
#ifdef __STDC__
int 
scm_ra_matchp (SCM ra0, SCM ras)
#else
int 
scm_ra_matchp (ra0, ras)
     SCM ra0;
     SCM ras;
#endif
{
  SCM ra1;
  scm_array_dim dims;
  scm_array_dim *s0 = &dims;
  scm_array_dim *s1;
  scm_sizet bas0 = 0;
  int i, ndim = 1;
  int exact = 2			/* 4 */ ;	/* Don't care about values >2 (yet?) */
  if SCM_IMP
    (ra0) return 0;
  switch (SCM_TYP7 (ra0))
      {
      default:
	return 0;
      case scm_tc7_vector:
      case scm_tc7_string:
      case scm_tc7_bvect:
      case scm_tc7_uvect:
      case scm_tc7_ivect:
      case scm_tc7_fvect:
      case scm_tc7_dvect:
      case scm_tc7_cvect:
	s0->lbnd = 0;
	s0->inc = 1;
	s0->ubnd = (long) SCM_LENGTH (ra0) - 1;
	break;
      case scm_tc7_smob:
	if (!SCM_ARRAYP (ra0))
	  return 0;
	ndim = SCM_ARRAY_NDIM (ra0);
	s0 = SCM_ARRAY_DIMS (ra0);
	bas0 = SCM_ARRAY_BASE (ra0);
	break;
      }
  while SCM_NIMP
    (ras)
      {
	ra1 = SCM_CAR (ras);
	if SCM_IMP
	  (ra1) return 0;
	switch SCM_TYP7
	  (ra1)
	    {
	    default:
	      return 0;
	    case scm_tc7_vector:
	    case scm_tc7_string:
	    case scm_tc7_bvect:
	    case scm_tc7_uvect:
	    case scm_tc7_ivect:
	    case scm_tc7_fvect:
	    case scm_tc7_dvect:
	    case scm_tc7_cvect:
	      if (1 != ndim)
		return 0;
	      switch (exact)
		{
		case 4:
		  if (0 != bas0)
		    exact = 3;
		case 3:
		  if (1 != s0->inc)
		    exact = 2;
		case 2:
		  if ((0 == s0->lbnd) && (s0->ubnd == SCM_LENGTH (ra1) - 1))
		    break;
		  exact = 1;
		case 1:
		  if (s0->lbnd < 0 || s0->ubnd >= SCM_LENGTH (ra1))
		    return 0;
		}
	      break;
	    case scm_tc7_smob:
	      if (!SCM_ARRAYP (ra1) || ndim != SCM_ARRAY_NDIM (ra1))
		return 0;
	      s1 = SCM_ARRAY_DIMS (ra1);
	      if (bas0 != SCM_ARRAY_BASE (ra1))
		exact = 3;
	      for (i = 0; i < ndim; i++)
		switch (exact)
		  {
		  case 4:
		  case 3:
		    if (s0[i].inc != s1[i].inc)
		      exact = 2;
		  case 2:
		    if (s0[i].lbnd == s1[i].lbnd && s0[i].ubnd == s1[i].ubnd)
		      break;
		    exact = 1;
		  default:
		    if (s0[i].lbnd < s1[i].lbnd || s0[i].ubnd > s1[i].ubnd)
		      return (s0[i].lbnd <= s0[i].ubnd ? 0 : 1);
		  }
	      break;
	    }
	ras = SCM_CDR (ras);
      }
  return exact;
}

static char s_ra_mismatch[] = "array shape mismatch";

#ifdef __STDC__
int 
scm_ramapc (int (*cproc) (), SCM data, SCM ra0, SCM lra, char *what)
#else
int 
scm_ramapc (cproc, data, ra0, lra, what)
     int (*cproc) ();
     SCM data;
     SCM ra0;
     SCM lra;
     char *what;
#endif
{
  SCM inds, z;
  SCM vra0, ra1, vra1;
  SCM lvra, *plvra;
  long *vinds;
  int k, kmax;
  switch (scm_ra_matchp (ra0, lra))
    {
    default:
    case 0:
      scm_wta (ra0, s_ra_mismatch, what);
    case 2:
    case 3:
    case 4:			/* Try unrolling arrays */
      kmax = (SCM_ARRAYP (ra0) ? SCM_ARRAY_NDIM (ra0) - 1 : 0);
      if (kmax < 0)
	goto gencase;
      vra0 = scm_array_contents (ra0, SCM_UNDEFINED);
      if SCM_IMP
	(vra0) goto gencase;
      if (!SCM_ARRAYP (vra0))
	{
	  vra1 = scm_make_ra (1);
	  SCM_ARRAY_BASE (vra1) = 0;
	  SCM_ARRAY_DIMS (vra1)->lbnd = 0;
	  SCM_ARRAY_DIMS (vra1)->ubnd = SCM_LENGTH (vra0) - 1;
	  SCM_ARRAY_DIMS (vra1)->inc = 1;
	  SCM_ARRAY_V (vra1) = vra0;
	  vra0 = vra1;
	}
      lvra = SCM_EOL;
      plvra = &lvra;
      for (z = lra; SCM_NIMP (z); z = SCM_CDR (z))
	{
	  ra1 = SCM_CAR (z);
	  vra1 = scm_make_ra (1);
	  SCM_ARRAY_DIMS (vra1)->lbnd = SCM_ARRAY_DIMS (vra0)->lbnd;
	  SCM_ARRAY_DIMS (vra1)->ubnd = SCM_ARRAY_DIMS (vra0)->ubnd;
	  if (!SCM_ARRAYP (ra1))
	    {
	      SCM_ARRAY_BASE (vra1) = 0;
	      SCM_ARRAY_DIMS (vra1)->inc = 1;
	      SCM_ARRAY_V (vra1) = ra1;
	    }
	  else if (!SCM_ARRAY_CONTP (ra1))
	    goto gencase;
	  else
	    {
	      SCM_ARRAY_BASE (vra1) = SCM_ARRAY_BASE (ra1);
	      SCM_ARRAY_DIMS (vra1)->inc = SCM_ARRAY_DIMS (ra1)[kmax].inc;
	      SCM_ARRAY_V (vra1) = SCM_ARRAY_V (ra1);
	    }
	  *plvra = scm_cons (vra1, SCM_EOL);
	  plvra = &SCM_CDR (*plvra);
	}
      return (SCM_UNBNDP (data) ? cproc(vra0, lvra) : cproc(vra0, data, lvra));
    case 1:
    gencase:			/* Have to loop over all dimensions. */
      vra0 = scm_make_ra (1);
      if SCM_ARRAYP
	(ra0)
	  {
	    kmax = SCM_ARRAY_NDIM (ra0) - 1;
	    if (kmax < 0)
	      {
		SCM_ARRAY_DIMS (vra0)->lbnd = 0;
		SCM_ARRAY_DIMS (vra0)->ubnd = 0;
		SCM_ARRAY_DIMS (vra0)->inc = 1;
	      }
	    else
	      {
		SCM_ARRAY_DIMS (vra0)->lbnd = SCM_ARRAY_DIMS (ra0)[kmax].lbnd;
		SCM_ARRAY_DIMS (vra0)->ubnd = SCM_ARRAY_DIMS (ra0)[kmax].ubnd;
		SCM_ARRAY_DIMS (vra0)->inc = SCM_ARRAY_DIMS (ra0)[kmax].inc;
	      }
	    SCM_ARRAY_BASE (vra0) = SCM_ARRAY_BASE (ra0);
	    SCM_ARRAY_V (vra0) = SCM_ARRAY_V (ra0);
	  }
      else
	{
	  kmax = 0;
	  SCM_ARRAY_DIMS (vra0)->lbnd = 0;
	  SCM_ARRAY_DIMS (vra0)->ubnd = SCM_LENGTH (ra0) - 1;
	  SCM_ARRAY_DIMS (vra0)->inc = 1;
	  SCM_ARRAY_BASE (vra0) = 0;
	  SCM_ARRAY_V (vra0) = ra0;
	  ra0 = vra0;
	}
      lvra = SCM_EOL;
      plvra = &lvra;
      for (z = lra; SCM_NIMP (z); z = SCM_CDR (z))
	{
	  ra1 = SCM_CAR (z);
	  vra1 = scm_make_ra (1);
	  SCM_ARRAY_DIMS (vra1)->lbnd = SCM_ARRAY_DIMS (vra0)->lbnd;
	  SCM_ARRAY_DIMS (vra1)->ubnd = SCM_ARRAY_DIMS (vra0)->ubnd;
	  if SCM_ARRAYP
	    (ra1)
	      {
		if (kmax >= 0)
		  SCM_ARRAY_DIMS (vra1)->inc = SCM_ARRAY_DIMS (ra1)[kmax].inc;
		SCM_ARRAY_V (vra1) = SCM_ARRAY_V (ra1);
	      }
	  else
	    {
	      SCM_ARRAY_DIMS (vra1)->inc = 1;
	      SCM_ARRAY_V (vra1) = ra1;
	    }
	  *plvra = scm_cons (vra1, SCM_EOL);
	  plvra = &SCM_CDR (*plvra);
	}
      inds = scm_make_uve (SCM_ARRAY_NDIM (ra0), SCM_MAKINUM (-1L));
      vinds = (long *) SCM_VELTS (inds);
      for (k = 0; k <= kmax; k++)
	vinds[k] = SCM_ARRAY_DIMS (ra0)[k].lbnd;
      k = kmax;
      do
	{
	  if (k == kmax)
	    {
	      SCM y = lra;
	      SCM_ARRAY_BASE (vra0) = cind (ra0, inds);
	      for (z = lvra; SCM_NIMP (z); z = SCM_CDR (z), y = SCM_CDR (y))
		SCM_ARRAY_BASE (SCM_CAR (z)) = cind (SCM_CAR (y), inds);
	      if (0 == (SCM_UNBNDP (data) ? cproc(vra0, lvra) : cproc(vra0, data, lvra)))
		return 0;
	      k--;
	      continue;
	    }
	  if (vinds[k] < SCM_ARRAY_DIMS (ra0)[k].ubnd)
	    {
	      vinds[k]++;
	      k++;
	      continue;
	    }
	  vinds[k] = SCM_ARRAY_DIMS (ra0)[k].lbnd - 1;
	  k--;
	}
      while (k >= 0);
      return 1;
    }
}


static char s_array_fill_x[];
#ifdef __STDC__
int 
scm_array_fill_int (SCM ra, SCM fill, SCM ignore)
#else
int 
scm_array_fill_int (ra, fill, ignore)
     SCM ra;
     SCM fill;
     SCM ignore;
#endif
{
  scm_sizet i, n = SCM_ARRAY_DIMS (ra)->ubnd - SCM_ARRAY_DIMS (ra)->lbnd + 1;
  long inc = SCM_ARRAY_DIMS (ra)->inc;
  scm_sizet base = SCM_ARRAY_BASE (ra);
  ra = SCM_ARRAY_V (ra);
  switch SCM_TYP7
    (ra)
      {
      default:
	for (i = base; n--; i += inc)
	  scm_array_set_x (ra, fill, SCM_MAKINUM (i));
	break;
      case scm_tc7_vector:
	for (i = base; n--; i += inc)
	  SCM_VELTS (ra)[i] = fill;
	break;
      case scm_tc7_string:
	SCM_ASRTGO (SCM_ICHRP (fill), badarg2);
	for (i = base; n--; i += inc)
	  SCM_CHARS (ra)[i] = SCM_ICHR (fill);
	break;
      case scm_tc7_bvect:
	{
	  long *ve = (long *) SCM_VELTS (ra);
	  if (1 == inc && (n >= SCM_LONG_BIT || n == SCM_LENGTH (ra)))
	    {
	      i = base / SCM_LONG_BIT;
	      if (SCM_BOOL_F == fill)
		{
		  if (base % SCM_LONG_BIT) /* leading partial word */
		    ve[i++] &= ~(~0L << (base % SCM_LONG_BIT));
		  for (; i < (base + n) / SCM_LONG_BIT; i++)
		    ve[i] = 0L;
		  if ((base + n) % SCM_LONG_BIT) /* trailing partial word */
		    ve[i] &= (~0L << ((base + n) % SCM_LONG_BIT));
		}
	      else if (SCM_BOOL_T == fill)
		{
		  if (base % SCM_LONG_BIT)
		    ve[i++] |= ~0L << (base % SCM_LONG_BIT);
		  for (; i < (base + n) / SCM_LONG_BIT; i++)
		    ve[i] = ~0L;
		  if ((base + n) % SCM_LONG_BIT)
		    ve[i] |= ~(~0L << ((base + n) % SCM_LONG_BIT));
		}
	      else
	      badarg2:scm_wta (fill, (char *) SCM_ARG2, s_array_fill_x);
	    }
	  else
	    {
	      if (SCM_BOOL_F == fill)
		for (i = base; n--; i += inc)
		  ve[i / SCM_LONG_BIT] &= ~(1L << (i % SCM_LONG_BIT));
	      else if (SCM_BOOL_T == fill)
		for (i = base; n--; i += inc)
		  ve[i / SCM_LONG_BIT] |= (1L << (i % SCM_LONG_BIT));
	      else
		goto badarg2;
	    }
	  break;
	}
      case scm_tc7_uvect:
	SCM_ASRTGO (0 <= SCM_INUM (fill), badarg2);
      case scm_tc7_ivect:
	SCM_ASRTGO (SCM_INUMP (fill), badarg2);
	{
	  long f = SCM_INUM (fill), *ve = (long *) SCM_VELTS (ra);
	  for (i = base; n--; i += inc)
	    ve[i] = f;
	  break;
	}
#ifdef SCM_FLOATS
#ifdef SCM_SINGLES
      case scm_tc7_fvect:
	{
	  float f, *ve = (float *) SCM_VELTS (ra);
	  SCM_ASRTGO (SCM_NIMP (fill) && SCM_REALP (fill), badarg2);
	  f = SCM_REALPART (fill);
	  for (i = base; n--; i += inc)
	    ve[i] = f;
	  break;
	}
#endif /* SCM_SINGLES */
      case scm_tc7_dvect:
	{
	  double f, *ve = (double *) SCM_VELTS (ra);
	  SCM_ASRTGO (SCM_NIMP (fill) && SCM_REALP (fill), badarg2);
	  f = SCM_REALPART (fill);
	  for (i = base; n--; i += inc)
	    ve[i] = f;
	  break;
	}
      case scm_tc7_cvect:
	{
	  double fr, fi;
	  double (*ve)[2] = (double (*)[2]) SCM_VELTS (ra);
	  SCM_ASRTGO (SCM_NIMP (fill) && SCM_INEXP (fill), badarg2);
	  fr = SCM_REALPART (fill);
	  fi = (SCM_CPLXP (fill) ? SCM_IMAG (fill) : 0.0);
	  for (i = base; n--; i += inc)
	    {
	      ve[i][0] = fr;
	      ve[i][1] = fi;
	    }
	  break;
	}
#endif /* SCM_FLOATS */
      }
  return 1;
}

SCM_PROC(s_array_fill_x, "array-fill!", 2, 0, 0, scm_array_fill_x);
#ifdef __STDC__
SCM 
scm_array_fill_x (SCM ra, SCM fill)
#else
SCM 
scm_array_fill_x (ra, fill)
     SCM ra;
     SCM fill;
#endif
{
  scm_ramapc (scm_array_fill_int, fill, ra, SCM_EOL, s_array_fill_x);
  return SCM_UNSPECIFIED;
}


#ifdef __STDC__
static int 
racp (SCM dst, SCM src)
#else
static int 
racp (src, dst)
     SCM dst;
     SCM src;
#endif
{
  long n = (SCM_ARRAY_DIMS (src)->ubnd - SCM_ARRAY_DIMS (src)->lbnd + 1);
  long inc_d, inc_s = SCM_ARRAY_DIMS (src)->inc;
  scm_sizet i_d, i_s = SCM_ARRAY_BASE (src);
  dst = SCM_CAR (dst);
  inc_d = SCM_ARRAY_DIMS (dst)->inc;
  i_d = SCM_ARRAY_BASE (dst);
  src = SCM_ARRAY_V (src);
  dst = SCM_ARRAY_V (dst);
  switch SCM_TYP7
    (dst)
      {
      default:
      gencase: case scm_tc7_vector:
	for (; n-- > 0; i_s += inc_s, i_d += inc_d)
	  scm_array_set_x (dst, scm_cvref (src, i_s, SCM_UNDEFINED), SCM_MAKINUM (i_d));
	break;
      case scm_tc7_string:
	if (scm_tc7_string != SCM_TYP7 (dst))
	  goto gencase;
	for (; n-- > 0; i_s += inc_s, i_d += inc_d)
	  SCM_CHARS (dst)[i_d] = SCM_CHARS (src)[i_s];
	break;
      case scm_tc7_bvect:
	if (scm_tc7_bvect != SCM_TYP7 (dst))
	  goto gencase;
	if (1 == inc_d && 1 == inc_s && i_s % SCM_LONG_BIT == i_d % SCM_LONG_BIT && n >= SCM_LONG_BIT)
	  {
	    long *sv = (long *) SCM_VELTS (src);
	    long *dv = (long *) SCM_VELTS (dst);
	    sv += i_s / SCM_LONG_BIT;
	    dv += i_d / SCM_LONG_BIT;
	    if (i_s % SCM_LONG_BIT)
	      {			/* leading partial word */
		*dv = (*dv & ~(~0L << (i_s % SCM_LONG_BIT))) | (*sv & (~0L << (i_s % SCM_LONG_BIT)));
		dv++;
		sv++;
		n -= SCM_LONG_BIT - (i_s % SCM_LONG_BIT);
	      }
	    IVDEP (src != dst,
		   for (; n >= SCM_LONG_BIT; n -= SCM_LONG_BIT, sv++, dv++)
		   * dv = *sv;)
	      if (n)		/* trailing partial word */
		*dv = (*dv & (~0L << n)) | (*sv & ~(~0L << n));
	  }
	else
	  {
	    for (; n-- > 0; i_s += inc_s, i_d += inc_d)
	      if (SCM_VELTS (src)[i_s / SCM_LONG_BIT] & (1L << (i_s % SCM_LONG_BIT)))
		SCM_VELTS (dst)[i_d / SCM_LONG_BIT] |= (1L << (i_d % SCM_LONG_BIT));
	      else
		SCM_VELTS (dst)[i_d / SCM_LONG_BIT] &= ~(1L << (i_d % SCM_LONG_BIT));
	  }
	break;
      case scm_tc7_uvect:
	if (scm_tc7_uvect != SCM_TYP7 (src))
	  goto gencase;
	else
	  {
	    long *d = (long *) SCM_VELTS (dst), *s = (long *) SCM_VELTS (src);
	    IVDEP (src != dst,
		   for (; n-- > 0; i_s += inc_s, i_d += inc_d)
		   d[i_d] = s[i_s];)
	      break;
	  }
      case scm_tc7_ivect:
	if (scm_tc7_uvect != SCM_TYP7 (src) && scm_tc7_ivect != SCM_TYP7 (src))
	  goto gencase;
	else
	  {
	    long *d = (long *) SCM_VELTS (dst), *s = (long *) SCM_VELTS (src);
	    IVDEP (src != dst,
		   for (; n-- > 0; i_s += inc_s, i_d += inc_d)
		   d[i_d] = s[i_s];)
	      break;
	  }
#ifdef SCM_FLOATS
#ifdef SCM_SINGLES
      case scm_tc7_fvect:
	{
	  float *d = (float *) SCM_VELTS (dst);
	  float *s = (float *) SCM_VELTS (src);
	  switch SCM_TYP7
	    (src)
	      {
	      default:
		goto gencase;
	      case scm_tc7_ivect:
	      case scm_tc7_uvect:
		IVDEP (src != dst,
		       for (; n-- > 0; i_s += inc_s, i_d += inc_d)
		       d[i_d] = ((long *) s)[i_s];)
		  break;
	      case scm_tc7_fvect:
		IVDEP (src != dst,
		       for (; n-- > 0; i_s += inc_s, i_d += inc_d)
		       d[i_d] = s[i_s];)
		  break;
	      case scm_tc7_dvect:
		IVDEP (src != dst,
		       for (; n-- > 0; i_s += inc_s, i_d += inc_d)
		       d[i_d] = ((double *) s)[i_s];)
		  break;
	      }
	  break;
	}
#endif /* SCM_SINGLES */
      case scm_tc7_dvect:
	{
	  double *d = (double *) SCM_VELTS (dst);
	  double *s = (double *) SCM_VELTS (src);
	  switch SCM_TYP7
	    (src)
	      {
	      default:
		goto gencase;
	      case scm_tc7_ivect:
	      case scm_tc7_uvect:
		IVDEP (src != dst,
		       for (; n-- > 0; i_s += inc_s, i_d += inc_d)
		       d[i_d] = ((long *) s)[i_s];)
		  break;
	      case scm_tc7_fvect:
		IVDEP (src != dst,
		       for (; n-- > 0; i_s += inc_s, i_d += inc_d)
		       d[i_d] = ((float *) s)[i_s];)
		  break;
	      case scm_tc7_dvect:
		IVDEP (src != dst,
		       for (; n-- > 0; i_s += inc_s, i_d += inc_d)
		       d[i_d] = s[i_s];)
		  break;
	      }
	  break;
	}
      case scm_tc7_cvect:
	{
	  double (*d)[2] = (double (*)[2]) SCM_VELTS (dst);
	  double (*s)[2] = (double (*)[2]) SCM_VELTS (src);
	  switch SCM_TYP7
	    (src)
	      {
	      default:
		goto gencase;
	      case scm_tc7_ivect:
	      case scm_tc7_uvect:
		IVDEP (src != dst,
		       for (; n-- > 0; i_s += inc_s, i_d += inc_d)
		       {
			 d[i_d][0] = ((long *) s)[i_s];
			 d[i_d][1] = 0.0;
		       }
		       )
		  break;
	      case scm_tc7_fvect:
		IVDEP (src != dst,
		       for (; n-- > 0; i_s += inc_s, i_d += inc_d)
		       {
			 d[i_d][0] = ((float *) s)[i_s];
			 d[i_d][1] = 0.0;
		       }
		       )
		  break;
	      case scm_tc7_dvect:
		IVDEP (src != dst,
		       for (; n-- > 0; i_s += inc_s, i_d += inc_d)
		       {
			 d[i_d][0] = ((double *) s)[i_s];
			 d[i_d][1] = 0.0;
		       }
		       )
		  break;
	      case scm_tc7_cvect:
		IVDEP (src != dst,
		       for (; n-- > 0; i_s += inc_s, i_d += inc_d)
		       {
			 d[i_d][0] = s[i_s][0];
			 d[i_d][1] = s[i_s][1];
		       }
		       )
	      }
	  break;
	}
      }
#endif /* SCM_FLOATS */
  return 1;
}


SCM_PROC(s_serial_array_copy_x, "serial-array-copy!", 2, 0, 0, scm_array_copy_x);
SCM_PROC(s_array_copy_x, "array-copy!", 2, 0, 0, scm_array_copy_x);
#ifdef __STDC__
SCM
scm_array_copy_x (SCM src, SCM dst)
#else
SCM
scm_array_copy_x (src, dst)
     SCM src;
     SCM dst;
#endif
{
  scm_ramapc (racp, SCM_UNDEFINED, src, scm_cons (dst, SCM_EOL), s_array_copy_x);
  return SCM_UNSPECIFIED;
}

/* Functions callable by ARRAY-MAP! */

#ifdef __STDC__
int
scm_ra_eqp (SCM ra0, SCM ras)
#else
int
scm_ra_eqp (ra0, ras)
     SCM ra0;
     SCM ras;
#endif
{
  SCM ra1 = SCM_CAR (ras), ra2 = SCM_CAR (SCM_CDR (ras));
  long n = SCM_ARRAY_DIMS (ra0)->ubnd - SCM_ARRAY_DIMS (ra0)->lbnd + 1;
  scm_sizet i0 = SCM_ARRAY_BASE (ra0), i1 = SCM_ARRAY_BASE (ra1), i2 = SCM_ARRAY_BASE (ra2);
  long inc0 = SCM_ARRAY_DIMS (ra0)->inc;
  long inc1 = SCM_ARRAY_DIMS (ra1)->inc;
  long inc2 = SCM_ARRAY_DIMS (ra1)->inc;
  ra0 = SCM_ARRAY_V (ra0);
  ra1 = SCM_ARRAY_V (ra1);
  ra2 = SCM_ARRAY_V (ra2);
  switch (SCM_TYP7 (ra1) == SCM_TYP7 (ra2) ? SCM_TYP7 (ra1) : 0)
    {
    default:
      {
	SCM e1 = SCM_UNDEFINED, e2 = SCM_UNDEFINED;
	for (; n-- > 0; i0 += inc0, i1 += inc1, i2 += inc2)
	  if BVE_REF
	    (ra0, i0)
	      if SCM_FALSEP
		(scm_eq_p (RVREF (ra1, i1, e1), RVREF (ra2, i2, e2)))
		  BVE_CLR (ra0, i0);
	break;
      }
    case scm_tc7_uvect:
    case scm_tc7_ivect:
      for (; n-- > 0; i0 += inc0, i1 += inc1, i2 += inc2)
	if BVE_REF
	  (ra0, i0)
	    if (SCM_VELTS (ra1)[i1] != SCM_VELTS (ra2)[i2])
	      BVE_CLR (ra0, i0);
      break;
#ifdef SCM_FLOATS
#ifdef SCM_SINGLES
    case scm_tc7_fvect:
      for (; n-- > 0; i0 += inc0, i1 += inc1, i2 += inc2)
	if BVE_REF
	  (ra0, i0)
	    if (((float *) SCM_VELTS (ra1))[i1] != ((float *) SCM_VELTS (ra2))[i2])
	      BVE_CLR (ra0, i0);
      break;
#endif /*SCM_SINGLES*/
    case scm_tc7_dvect:
      for (; n-- > 0; i0 += inc0, i1 += inc1, i2 += inc2)
	if BVE_REF
	  (ra0, i0)
	    if (((double *) SCM_VELTS (ra1))[i1] != ((double *) SCM_VELTS (ra2))[i2])
	      BVE_CLR (ra0, i0);
      break;
    case scm_tc7_cvect:
      for (; n-- > 0; i0 += inc0, i1 += inc1, i2 += inc2)
	if BVE_REF
	  (ra0, i0)
	    if (((double *) SCM_VELTS (ra1))[2 * i1] != ((double *) SCM_VELTS (ra2))[2 * i2] ||
		((double *) SCM_VELTS (ra1))[2 * i1 + 1] != ((double *) SCM_VELTS (ra2))[2 * i2 + 1])
	      BVE_CLR (ra0, i0);
      break;
#endif /*SCM_FLOATS*/
    }
  return 1;
}

/* opt 0 means <, nonzero means >= */
#ifdef __STDC__
static int
ra_compare (SCM ra0, SCM ra1, SCM ra2, int opt)
#else
static int
ra_compare (ra0, ra1, ra2, opt)
     SCM ra0;
     SCM ra1;
     SCM ra2;
     int opt;
#endif
{
  long n = SCM_ARRAY_DIMS (ra0)->ubnd - SCM_ARRAY_DIMS (ra0)->lbnd + 1;
  scm_sizet i0 = SCM_ARRAY_BASE (ra0), i1 = SCM_ARRAY_BASE (ra1), i2 = SCM_ARRAY_BASE (ra2);
  long inc0 = SCM_ARRAY_DIMS (ra0)->inc;
  long inc1 = SCM_ARRAY_DIMS (ra1)->inc;
  long inc2 = SCM_ARRAY_DIMS (ra1)->inc;
  ra0 = SCM_ARRAY_V (ra0);
  ra1 = SCM_ARRAY_V (ra1);
  ra2 = SCM_ARRAY_V (ra2);
  switch (SCM_TYP7 (ra1) == SCM_TYP7 (ra2) ? SCM_TYP7 (ra1) : 0)
    {
    default:
      {
	SCM e1 = SCM_UNDEFINED, e2 = SCM_UNDEFINED;
	for (; n-- > 0; i0 += inc0, i1 += inc1, i2 += inc2)
	  if BVE_REF
	    (ra0, i0)
	      if (opt ?
		  SCM_NFALSEP (scm_less_p (RVREF (ra1, i1, e1), RVREF (ra2, i2, e2))) :
		  SCM_FALSEP (scm_less_p (RVREF (ra1, i1, e1), RVREF (ra2, i2, e2))))
		BVE_CLR (ra0, i0);
	break;
      }
    case scm_tc7_uvect:
    case scm_tc7_ivect:
      for (; n-- > 0; i0 += inc0, i1 += inc1, i2 += inc2)
	{
	  if BVE_REF
	    (ra0, i0)
	      if (opt ?
		  SCM_VELTS (ra1)[i1] < SCM_VELTS (ra2)[i2] :
		  SCM_VELTS (ra1)[i1] >= SCM_VELTS (ra2)[i2])
		BVE_CLR (ra0, i0);
	}
      break;
#ifdef SCM_FLOATS
#ifdef SCM_SINGLES
    case scm_tc7_fvect:
      for (; n-- > 0; i0 += inc0, i1 += inc1, i2 += inc2)
	if BVE_REF
	  (ra0, i0)
	    if (opt ?
		((float *) SCM_VELTS (ra1))[i1] < ((float *) SCM_VELTS (ra2))[i2] :
		((float *) SCM_VELTS (ra1))[i1] >= ((float *) SCM_VELTS (ra2))[i2])
	      BVE_CLR (ra0, i0);
      break;
#endif /*SCM_SINGLES*/
    case scm_tc7_dvect:
      for (; n-- > 0; i0 += inc0, i1 += inc1, i2 += inc2)
	if BVE_REF
	  (ra0, i0)
	    if (opt ?
		((double *) SCM_VELTS (ra1))[i1] < ((double *) SCM_VELTS (ra2))[i2] :
		((double *) SCM_VELTS (ra1))[i1] >= ((double *) SCM_VELTS (ra2))[i2])
	      BVE_CLR (ra0, i0);
      break;
#endif /*SCM_FLOATS*/
    }
  return 1;
}


#ifdef __STDC__
int
scm_ra_lessp (SCM ra0, SCM ras)
#else
int
scm_ra_lessp (ra0, ras)
     SCM ra0;
     SCM ras;
#endif
{
  return ra_compare (ra0, SCM_CAR (ras), SCM_CAR (SCM_CDR (ras)), 0);
}

#ifdef __STDC__
int
scm_ra_leqp (SCM ra0, SCM ras)
#else
int
scm_ra_leqp (ra0, ras)
     SCM ra0;
     SCM ras;
#endif
{
  return ra_compare (ra0, SCM_CAR (SCM_CDR (ras)), SCM_CAR (ras), 1);
}

#ifdef __STDC__
int
scm_ra_grp (SCM ra0, SCM ras)
#else
int
scm_ra_grp (ra0, ras)
     SCM ra0;
     SCM ras;
#endif
{
  return ra_compare (ra0, SCM_CAR (SCM_CDR (ras)), SCM_CAR (ras), 0);
}

#ifdef __STDC__
int
scm_ra_greqp (SCM ra0, SCM ras)
#else
int
scm_ra_greqp (ra0, ras)
     SCM ra0;
     SCM ras;
#endif
{
  return ra_compare (ra0, SCM_CAR (ras), SCM_CAR (SCM_CDR (ras)), 1);
}


#ifdef __STDC__
int
scm_ra_sum (SCM ra0, SCM ras)
#else
int
scm_ra_sum (ra0, ras)
     SCM ra0;
     SCM ras;
#endif
{
  long n = SCM_ARRAY_DIMS (ra0)->ubnd - SCM_ARRAY_DIMS (ra0)->lbnd + 1;
  scm_sizet i0 = SCM_ARRAY_BASE (ra0);
  long inc0 = SCM_ARRAY_DIMS (ra0)->inc;
  ra0 = SCM_ARRAY_V (ra0);
  if SCM_NNULLP
    (ras)
      {
	SCM ra1 = SCM_CAR (ras);
	scm_sizet i1 = SCM_ARRAY_BASE (ra1);
	long inc1 = SCM_ARRAY_DIMS (ra1)->inc;
	ra1 = SCM_ARRAY_V (ra1);
	switch (SCM_TYP7 (ra0) == SCM_TYP7 (ra1) ? SCM_TYP7 (ra0) : 0)
	  {
	  default:
	    {
	      SCM e0 = SCM_UNDEFINED, e1 = SCM_UNDEFINED;
	      for (; n-- > 0; i0 += inc0, i1 += inc1)
		scm_array_set_x (ra0, scm_sum (RVREF (ra0, i0, e0), RVREF (ra1, i1, e1)),
		      SCM_MAKINUM (i0));
	      break;
	    }
	  case scm_tc7_uvect:
	  case scm_tc7_ivect:
	    {
	      long *v0 = SCM_VELTS (ra0);
	      long *v1 = SCM_VELTS (ra1);
	      IVDEP (ra0 != ra1,
		     for (; n-- > 0; i0 += inc0, i1 += inc1)
		     v0[i0] += v1[i1]);
	      break;
	    }
#ifdef SCM_FLOATS
#ifdef SCM_SINGLES
	  case scm_tc7_fvect:
	    {
	      float *v0 = (float *) SCM_VELTS (ra0);
	      float *v1 = (float *) SCM_VELTS (ra1);
	      IVDEP (ra0 != ra1,
		     for (; n-- > 0; i0 += inc0, i1 += inc1)
		     v0[i0] += v1[i1]);
	      break;
	    }
#endif /* SCM_SINGLES */
	  case scm_tc7_dvect:
	    {
	      double *v0 = (double *) SCM_VELTS (ra0);
	      double *v1 = (double *) SCM_VELTS (ra1);
	      IVDEP (ra0 != ra1,
		     for (; n-- > 0; i0 += inc0, i1 += inc1)
		     v0[i0] += v1[i1]);
	      break;
	    }
	  case scm_tc7_cvect:
	    {
	      double (*v0)[2] = (double (*)[2]) SCM_VELTS (ra0);
	      double (*v1)[2] = (double (*)[2]) SCM_VELTS (ra1);
	      IVDEP (ra0 != ra1,
		     for (; n-- > 0; i0 += inc0, i1 += inc1)
		     {
		       v0[i0][0] += v1[i1][0];
		       v0[i0][1] += v1[i1][1];
		     }
		     );
	      break;
	    }
#endif /* SCM_FLOATS */
	  }
      }
  return 1;
}


#ifdef __STDC__
int
scm_ra_difference (SCM ra0, SCM ras)
#else
int
scm_ra_difference (ra0, ras)
     SCM ra0;
     SCM ras;
#endif
{
  long n = SCM_ARRAY_DIMS (ra0)->ubnd - SCM_ARRAY_DIMS (ra0)->lbnd + 1;
  scm_sizet i0 = SCM_ARRAY_BASE (ra0);
  long inc0 = SCM_ARRAY_DIMS (ra0)->inc;
  ra0 = SCM_ARRAY_V (ra0);
  if SCM_NULLP
    (ras)
      {
	switch SCM_TYP7
	  (ra0)
	    {
	    default:
	      {
		SCM e0 = SCM_UNDEFINED;
		for (; n-- > 0; i0 += inc0)
		  scm_array_set_x (ra0, scm_difference (RVREF (ra0, i0, e0), SCM_UNDEFINED), SCM_MAKINUM (i0));
		break;
	      }
#ifdef SCM_FLOATS
#ifdef SCM_SINGLES
	    case scm_tc7_fvect:
	      {
		float *v0 = (float *) SCM_VELTS (ra0);
		for (; n-- > 0; i0 += inc0)
		  v0[i0] = -v0[i0];
		break;
	      }
#endif /* SCM_SINGLES */
	    case scm_tc7_dvect:
	      {
		double *v0 = (double *) SCM_VELTS (ra0);
		for (; n-- > 0; i0 += inc0)
		  v0[i0] = -v0[i0];
		break;
	      }
	    case scm_tc7_cvect:
	      {
		double (*v0)[2] = (double (*)[2]) SCM_VELTS (ra0);
		for (; n-- > 0; i0 += inc0)
		  {
		    v0[i0][0] = -v0[i0][0];
		    v0[i0][1] = -v0[i0][1];
		  }
		break;
	      }
#endif /* SCM_FLOATS */
	    }
      }
  else
    {
      SCM ra1 = SCM_CAR (ras);
      scm_sizet i1 = SCM_ARRAY_BASE (ra1);
      long inc1 = SCM_ARRAY_DIMS (ra1)->inc;
      ra1 = SCM_ARRAY_V (ra1);
      switch (SCM_TYP7 (ra0) == SCM_TYP7 (ra1) ? SCM_TYP7 (ra0) : 0)
	{
	default:
	  {
	    SCM e0 = SCM_UNDEFINED, e1 = SCM_UNDEFINED;
	    for (; n-- > 0; i0 += inc0, i1 += inc1)
	      scm_array_set_x (ra0, scm_difference (RVREF (ra0, i0, e0), RVREF (ra1, i1, e1)), SCM_MAKINUM (i0));
	    break;
	  }
#ifdef SCM_FLOATS
#ifdef SCM_SINGLES
	case scm_tc7_fvect:
	  {
	    float *v0 = (float *) SCM_VELTS (ra0);
	    float *v1 = (float *) SCM_VELTS (ra1);
	    IVDEP (ra0 != ra1,
		   for (; n-- > 0; i0 += inc0, i1 += inc1)
		   v0[i0] -= v1[i1]);
	    break;
	  }
#endif /* SCM_SINGLES */
	case scm_tc7_dvect:
	  {
	    double *v0 = (double *) SCM_VELTS (ra0);
	    double *v1 = (double *) SCM_VELTS (ra1);
	    IVDEP (ra0 != ra1,
		   for (; n-- > 0; i0 += inc0, i1 += inc1)
		   v0[i0] -= v1[i1]);
	    break;
	  }
	case scm_tc7_cvect:
	  {
	    double (*v0)[2] = (double (*)[2]) SCM_VELTS (ra0);
	    double (*v1)[2] = (double (*)[2]) SCM_VELTS (ra1);
	    IVDEP (ra0 != ra1,
		   for (; n-- > 0; i0 += inc0, i1 += inc1)
		   {
		     v0[i0][0] -= v1[i1][0];
		     v0[i0][1] -= v1[i1][1];
		   }
		   )
	      break;
	  }
#endif /* SCM_FLOATS */
	}
    }
  return 1;
}


#ifdef __STDC__
int
scm_ra_product (SCM ra0, SCM ras)
#else
int
scm_ra_product (ra0, ras)
     SCM ra0;
     SCM ras;
#endif
{
  long n = SCM_ARRAY_DIMS (ra0)->ubnd - SCM_ARRAY_DIMS (ra0)->lbnd + 1;
  scm_sizet i0 = SCM_ARRAY_BASE (ra0);
  long inc0 = SCM_ARRAY_DIMS (ra0)->inc;
  ra0 = SCM_ARRAY_V (ra0);
  if SCM_NNULLP
    (ras)
      {
	SCM ra1 = SCM_CAR (ras);
	scm_sizet i1 = SCM_ARRAY_BASE (ra1);
	long inc1 = SCM_ARRAY_DIMS (ra1)->inc;
	ra1 = SCM_ARRAY_V (ra1);
	switch (SCM_TYP7 (ra0) == SCM_TYP7 (ra1) ? SCM_TYP7 (ra0) : 0)
	  {
	  default:
	    {
	      SCM e0 = SCM_UNDEFINED, e1 = SCM_UNDEFINED;
	      for (; n-- > 0; i0 += inc0, i1 += inc1)
		scm_array_set_x (ra0, scm_product (RVREF (ra0, i0, e0), RVREF (ra1, i1, e1)),
		      SCM_MAKINUM (i0));
	      break;
	    }
	  case scm_tc7_uvect:
	  case scm_tc7_ivect:
	    {
	      long *v0 = SCM_VELTS (ra0);
	      long *v1 = SCM_VELTS (ra1);
	      IVDEP (ra0 != ra1,
		     for (; n-- > 0; i0 += inc0, i1 += inc1)
		     v0[i0] *= v1[i1]);
	      break;
	    }
#ifdef SCM_FLOATS
#ifdef SCM_SINGLES
	  case scm_tc7_fvect:
	    {
	      float *v0 = (float *) SCM_VELTS (ra0);
	      float *v1 = (float *) SCM_VELTS (ra1);
	      IVDEP (ra0 != ra1,
		     for (; n-- > 0; i0 += inc0, i1 += inc1)
		     v0[i0] *= v1[i1]);
	      break;
	    }
#endif /* SCM_SINGLES */
	  case scm_tc7_dvect:
	    {
	      double *v0 = (double *) SCM_VELTS (ra0);
	      double *v1 = (double *) SCM_VELTS (ra1);
	      IVDEP (ra0 != ra1,
		     for (; n-- > 0; i0 += inc0, i1 += inc1)
		     v0[i0] *= v1[i1]);
	      break;
	    }
	  case scm_tc7_cvect:
	    {
	      double (*v0)[2] = (double (*)[2]) SCM_VELTS (ra0);
	      register double r;
	      double (*v1)[2] = (double (*)[2]) SCM_VELTS (ra1);
	      IVDEP (ra0 != ra1,
		     for (; n-- > 0; i0 += inc0, i1 += inc1)
		     {
		       r = v0[i0][0] * v1[i1][0] - v0[i0][1] * v1[i1][1];
		       v0[i0][1] = v0[i0][0] * v1[i1][1] + v0[i0][1] * v1[i1][0];
		       v0[i0][0] = r;
		     }
		     );
	      break;
	    }
#endif /* SCM_FLOATS */
	  }
      }
  return 1;
}

#ifdef __STDC__
int
scm_ra_divide (SCM ra0, SCM ras)
#else
int
scm_ra_divide (ra0, ras)
     SCM ra0;
     SCM ras;
#endif
{
  long n = SCM_ARRAY_DIMS (ra0)->ubnd - SCM_ARRAY_DIMS (ra0)->lbnd + 1;
  scm_sizet i0 = SCM_ARRAY_BASE (ra0);
  long inc0 = SCM_ARRAY_DIMS (ra0)->inc;
  ra0 = SCM_ARRAY_V (ra0);
  if SCM_NULLP
    (ras)
      {
	switch SCM_TYP7
	  (ra0)
	    {
	    default:
	      {
		SCM e0 = SCM_UNDEFINED;
		for (; n-- > 0; i0 += inc0)
		  scm_array_set_x (ra0, scm_divide (RVREF (ra0, i0, e0), SCM_UNDEFINED), SCM_MAKINUM (i0));
		break;
	      }
#ifdef SCM_FLOATS
#ifdef SCM_SINGLES
	    case scm_tc7_fvect:
	      {
		float *v0 = (float *) SCM_VELTS (ra0);
		for (; n-- > 0; i0 += inc0)
		  v0[i0] = 1.0 / v0[i0];
		break;
	      }
#endif /* SCM_SINGLES */
	    case scm_tc7_dvect:
	      {
		double *v0 = (double *) SCM_VELTS (ra0);
		for (; n-- > 0; i0 += inc0)
		  v0[i0] = 1.0 / v0[i0];
		break;
	      }
	    case scm_tc7_cvect:
	      {
		register double d;
		double (*v0)[2] = (double (*)[2]) SCM_VELTS (ra0);
		for (; n-- > 0; i0 += inc0)
		  {
		    d = v0[i0][0] * v0[i0][0] + v0[i0][1] * v0[i0][1];
		    v0[i0][0] /= d;
		    v0[i0][1] /= -d;
		  }
		break;
	      }
#endif /* SCM_FLOATS */
	    }
      }
  else
    {
      SCM ra1 = SCM_CAR (ras);
      scm_sizet i1 = SCM_ARRAY_BASE (ra1);
      long inc1 = SCM_ARRAY_DIMS (ra1)->inc;
      ra1 = SCM_ARRAY_V (ra1);
      switch (SCM_TYP7 (ra0) == SCM_TYP7 (ra1) ? SCM_TYP7 (ra0) : 0)
	{
	default:
	  {
	    SCM e0 = SCM_UNDEFINED, e1 = SCM_UNDEFINED;
	    for (; n-- > 0; i0 += inc0, i1 += inc1)
	      scm_array_set_x (ra0, scm_divide (RVREF (ra0, i0, e0), RVREF (ra1, i1, e1)), SCM_MAKINUM (i0));
	    break;
	  }
#ifdef SCM_FLOATS
#ifdef SCM_SINGLES
	case scm_tc7_fvect:
	  {
	    float *v0 = (float *) SCM_VELTS (ra0);
	    float *v1 = (float *) SCM_VELTS (ra1);
	    IVDEP (ra0 != ra1,
		   for (; n-- > 0; i0 += inc0, i1 += inc1)
		   v0[i0] /= v1[i1]);
	    break;
	  }
#endif /* SCM_SINGLES */
	case scm_tc7_dvect:
	  {
	    double *v0 = (double *) SCM_VELTS (ra0);
	    double *v1 = (double *) SCM_VELTS (ra1);
	    IVDEP (ra0 != ra1,
		   for (; n-- > 0; i0 += inc0, i1 += inc1)
		   v0[i0] /= v1[i1]);
	    break;
	  }
	case scm_tc7_cvect:
	  {
	    register double d, r;
	    double (*v0)[2] = (double (*)[2]) SCM_VELTS (ra0);
	    double (*v1)[2] = (double (*)[2]) SCM_VELTS (ra1);
	    IVDEP (ra0 != ra1,
		   for (; n-- > 0; i0 += inc0, i1 += inc1)
		   {
		     d = v1[i1][0] * v1[i1][0] + v1[i1][1] * v1[i1][1];
		     r = (v0[i0][0] * v1[i1][0] + v0[i0][1] * v1[i1][1]) / d;
		     v0[i0][1] = (v0[i0][1] * v1[i1][0] - v0[i0][0] * v1[i1][1]) / d;
		     v0[i0][0] = r;
		   }
		   )
	      break;
	  }
#endif /* SCM_FLOATS */
	}
    }
  return 1;
}

#ifdef __STDC__
int
scm_array_identity (SCM src, SCM dst)
#else
int
scm_array_identity (dst, src)
     SCM src;
     SCM dst;
#endif
{
  return racp (SCM_CAR (src), scm_cons (dst, SCM_EOL));
}


#ifdef __STDC__
static
int
ramap (SCM ra0, SCM proc, SCM ras)
#else
static int 
ramap (ra0, proc, ras)
     SCM ra0;
     SCM proc;
     SCM ras;
#endif
{
  long i = SCM_ARRAY_DIMS (ra0)->lbnd;
  long inc = SCM_ARRAY_DIMS (ra0)->inc;
  long n = SCM_ARRAY_DIMS (ra0)->ubnd;
  long base = SCM_ARRAY_BASE (ra0) - i * inc;
  ra0 = SCM_ARRAY_V (ra0);
  if SCM_NULLP
    (ras)
      for (; i <= n; i++)
	scm_array_set_x (ra0, scm_apply (proc, SCM_EOL, SCM_EOL), SCM_MAKINUM (i * inc + base));
  else
    {
      SCM ra1 = SCM_CAR (ras);
      SCM args, *ve = &ras;
      scm_sizet k, i1 = SCM_ARRAY_BASE (ra1);
      long inc1 = SCM_ARRAY_DIMS (ra1)->inc;
      ra1 = SCM_ARRAY_V (ra1);
      ras = SCM_CDR (ras);
      if SCM_NULLP
	(ras)
	  ras = scm_nullvect;
      else
	{
	  ras = scm_vector (ras);
	  ve = SCM_VELTS (ras);
	}
      for (; i <= n; i++, i1 += inc1)
	{
	  args = SCM_EOL;
	  for (k = SCM_LENGTH (ras); k--;)
	    args = scm_cons (scm_uniform_vector_ref (ve[k], SCM_MAKINUM (i)), args);
	  args = scm_cons (scm_cvref (ra1, i1, SCM_UNDEFINED), args);
	  scm_array_set_x (ra0, scm_apply (proc, args, SCM_EOL), SCM_MAKINUM (i * inc + base));
	}
    }
  return 1;
}

#ifdef __STDC__
static int
ramap_cxr (SCM ra0, SCM proc, SCM ras)
#else
static int
ramap_cxr (ra0, proc, ras)
     SCM ra0;
     SCM proc;
     SCM ras;
#endif
{
  SCM ra1 = SCM_CAR (ras);
  SCM e1 = SCM_UNDEFINED;
  scm_sizet i0 = SCM_ARRAY_BASE (ra0), i1 = SCM_ARRAY_BASE (ra1);
  long inc0 = SCM_ARRAY_DIMS (ra0)->inc, inc1 = SCM_ARRAY_DIMS (ra1)->inc;
  long n = SCM_ARRAY_DIMS (ra0)->ubnd - SCM_ARRAY_DIMS (ra1)->lbnd + 1;
  ra0 = SCM_ARRAY_V (ra0);
  ra1 = SCM_ARRAY_V (ra1);
  switch SCM_TYP7
    (ra0)
      {
      default:
      gencase:
	for (; n-- > 0; i0 += inc0, i1 += inc1)
	  scm_array_set_x (ra0, scm_apply (proc, RVREF (ra1, i1, e1), scm_listofnull), SCM_MAKINUM (i0));
	break;
#ifdef SCM_FLOATS
#ifdef SCM_SINGLES
      case scm_tc7_fvect:
	{
	  float *dst = (float *) SCM_VELTS (ra0);
	  switch SCM_TYP7
	    (ra1)
	      {
	      default:
		goto gencase;
	      case scm_tc7_fvect:
		for (; n-- > 0; i0 += inc0, i1 += inc1)
		  dst[i0] = SCM_DSUBRF (proc) ((double) ((float *) SCM_VELTS (ra1))[i1]);
		break;
	      case scm_tc7_uvect:
	      case scm_tc7_ivect:
		for (; n-- > 0; i0 += inc0, i1 += inc1)
		  dst[i0] = SCM_DSUBRF (proc) ((double) SCM_VELTS (ra1)[i1]);
		break;
	      }
	  break;
	}
#endif /* SCM_SINGLES */
      case scm_tc7_dvect:
	{
	  double *dst = (double *) SCM_VELTS (ra0);
	  switch SCM_TYP7
	    (ra1)
	      {
	      default:
		goto gencase;
	      case scm_tc7_dvect:
		for (; n-- > 0; i0 += inc0, i1 += inc1)
		  dst[i0] = SCM_DSUBRF (proc) (((double *) SCM_VELTS (ra1))[i1]);
		break;
	      case scm_tc7_uvect:
	      case scm_tc7_ivect:
		for (; n-- > 0; i0 += inc0, i1 += inc1)
		  dst[i0] = SCM_DSUBRF (proc) ((double) SCM_VELTS (ra1)[i1]);
		break;
	      }
	  break;
	}
#endif /* SCM_FLOATS */
      }
  return 1;
}


#ifdef __STDC__
static int
ramap_rp (SCM ra0, SCM proc, SCM ras)
#else
static int
ramap_rp (ra0, proc, ras)
     SCM ra0;
     SCM proc;
     SCM ras;
#endif
{
  SCM ra1 = SCM_CAR (ras), ra2 = SCM_CAR (SCM_CDR (ras));
  SCM e1 = SCM_UNDEFINED, e2 = SCM_UNDEFINED;
  long n = SCM_ARRAY_DIMS (ra0)->ubnd - SCM_ARRAY_DIMS (ra0)->lbnd + 1;
  scm_sizet i0 = SCM_ARRAY_BASE (ra0), i1 = SCM_ARRAY_BASE (ra1), i2 = SCM_ARRAY_BASE (ra2);
  long inc0 = SCM_ARRAY_DIMS (ra0)->inc;
  long inc1 = SCM_ARRAY_DIMS (ra1)->inc;
  long inc2 = SCM_ARRAY_DIMS (ra1)->inc;
  ra0 = SCM_ARRAY_V (ra0);
  ra1 = SCM_ARRAY_V (ra1);
  ra2 = SCM_ARRAY_V (ra2);
  switch (SCM_TYP7 (ra1) == SCM_TYP7 (ra2) ? SCM_TYP7 (ra1) : 0)
    {
    default:
      for (; n-- > 0; i0 += inc0, i1 += inc1, i2 += inc2)
	if BVE_REF
	  (ra0, i0)
	    if SCM_FALSEP
	      (SCM_SUBRF (proc) (RVREF (ra1, i1, e1), RVREF (ra2, i2, e2)))
		BVE_CLR (ra0, i0);
      break;
    case scm_tc7_uvect:
    case scm_tc7_ivect:
      for (; n-- > 0; i0 += inc0, i1 += inc1, i2 += inc2)
	if BVE_REF
	  (ra0, i0)
	    {
	      if SCM_FALSEP
		(SCM_SUBRF (proc) (SCM_MAKINUM (SCM_VELTS (ra1)[i1]),
			       SCM_MAKINUM (SCM_VELTS (ra2)[i2])))
		  BVE_CLR (ra0, i0);
	    }
      break;
#ifdef SCM_FLOATS
#ifdef SCM_SINGLES
    case scm_tc7_fvect:
      {
	SCM a1 = scm_makflo (1.0), a2 = scm_makflo (1.0);
	for (; n-- > 0; i0 += inc0, i1 += inc1, i2 += inc2)
	  if BVE_REF
	    (ra0, i0)
	      {
		SCM_FLO (a1) = ((float *) SCM_VELTS (ra1))[i1];
		SCM_FLO (a2) = ((float *) SCM_VELTS (ra2))[i2];
		if SCM_FALSEP
		  (SCM_SUBRF (proc) (a1, a2))
		    BVE_CLR (ra0, i0);
	      }
	break;
      }
#endif /*SCM_SINGLES*/
    case scm_tc7_dvect:
      {
	SCM a1 = scm_makdbl (1.0 / 3.0, 0.0), a2 = scm_makdbl (1.0 / 3.0, 0.0);
	for (; n-- > 0; i0 += inc0, i1 += inc1, i2 += inc2)
	  if BVE_REF
	    (ra0, i0)
	      {
		SCM_REAL (a1) = ((double *) SCM_VELTS (ra1))[i1];
		SCM_REAL (a2) = ((double *) SCM_VELTS (ra2))[i2];
		if SCM_FALSEP
		  (SCM_SUBRF (proc) (a1, a2))
		    BVE_CLR (ra0, i0);
	      }
	break;
      }
    case scm_tc7_cvect:
      {
	SCM a1 = scm_makdbl (1.0, 1.0), a2 = scm_makdbl (1.0, 1.0);
	for (; n-- > 0; i0 += inc0, i1 += inc1, i2 += inc2)
	  if BVE_REF
	    (ra0, i0)
	      {
		SCM_REAL (a1) = ((double *) SCM_VELTS (ra1))[2 * i1];
		SCM_IMAG (a1) = ((double *) SCM_VELTS (ra1))[2 * i1 + 1];
		SCM_REAL (a2) = ((double *) SCM_VELTS (ra2))[2 * i2];
		SCM_IMAG (a2) = ((double *) SCM_VELTS (ra2))[2 * i2 + 1];
		if SCM_FALSEP
		  (SCM_SUBRF (proc) (a1, a2))
		    BVE_CLR (ra0, i0);
	      }
	break;
      }
#endif /*SCM_FLOATS*/
    }
  return 1;
}


#ifdef __STDC__
static int
ramap_1 (SCM ra0, SCM proc, SCM ras)
#else
static int
ramap_1 (ra0, proc, ras)
     SCM ra0;
     SCM proc;
     SCM ras;
#endif
{
  SCM ra1 = SCM_CAR (ras);
  SCM e1 = SCM_UNDEFINED;
  long n = SCM_ARRAY_DIMS (ra0)->ubnd - SCM_ARRAY_DIMS (ra0)->lbnd + 1;
  scm_sizet i0 = SCM_ARRAY_BASE (ra0), i1 = SCM_ARRAY_BASE (ra1);
  long inc0 = SCM_ARRAY_DIMS (ra0)->inc, inc1 = SCM_ARRAY_DIMS (ra1)->inc;
  ra0 = SCM_ARRAY_V (ra0);
  ra1 = SCM_ARRAY_V (ra1);
  if (scm_tc7_vector == SCM_TYP7 (ra0))
    for (; n-- > 0; i0 += inc0, i1 += inc1)
      scm_array_set_x (ra0, SCM_SUBRF (proc) (scm_cvref (ra1, i1, SCM_UNDEFINED)), SCM_MAKINUM (i0));
  else
    for (; n-- > 0; i0 += inc0, i1 += inc1)
      scm_array_set_x (ra0, SCM_SUBRF (proc) (RVREF (ra1, i1, e1)), SCM_MAKINUM (i0));
  return 1;
}


#ifdef __STDC__
static int
ramap_2o (SCM ra0, SCM proc, SCM ras)
#else
static int
ramap_2o (ra0, proc, ras)
     SCM ra0;
     SCM proc;
     SCM ras;
#endif
{
  SCM ra1 = SCM_CAR (ras);
  SCM e1 = SCM_UNDEFINED;
  long n = SCM_ARRAY_DIMS (ra0)->ubnd - SCM_ARRAY_DIMS (ra0)->lbnd + 1;
  scm_sizet i0 = SCM_ARRAY_BASE (ra0), i1 = SCM_ARRAY_BASE (ra1);
  long inc0 = SCM_ARRAY_DIMS (ra0)->inc, inc1 = SCM_ARRAY_DIMS (ra1)->inc;
  ra0 = SCM_ARRAY_V (ra0);
  ra1 = SCM_ARRAY_V (ra1);
  ras = SCM_CDR (ras);
  if SCM_NULLP
    (ras)
      {
	if (scm_tc7_vector == SCM_TYP7 (ra0))
	  for (; n-- > 0; i0 += inc0, i1 += inc1)
	    scm_array_set_x (ra0, SCM_SUBRF (proc) (scm_cvref (ra1, i1, SCM_UNDEFINED), SCM_UNDEFINED),
		  SCM_MAKINUM (i0));
	else
	  for (; n-- > 0; i0 += inc0, i1 += inc1)
	    scm_array_set_x (ra0, SCM_SUBRF (proc) (RVREF (ra1, i1, e1), SCM_UNDEFINED),
		  SCM_MAKINUM (i0));
      }
  else
    {
      SCM ra2 = SCM_CAR (ras);
      SCM e2 = SCM_UNDEFINED;
      scm_sizet i2 = SCM_ARRAY_BASE (ra2);
      long inc2 = SCM_ARRAY_DIMS (ra2)->inc;
      ra2 = SCM_ARRAY_V (ra2);
      if (scm_tc7_vector == SCM_TYP7 (ra0))
	for (; n-- > 0; i0 += inc0, i1 += inc1, i2 += inc2)
	  scm_array_set_x (ra0,
		SCM_SUBRF (proc) (scm_cvref (ra1, i1, SCM_UNDEFINED), scm_cvref (ra2, i2, SCM_UNDEFINED)),
		SCM_MAKINUM (i0));
      else
	for (; n-- > 0; i0 += inc0, i1 += inc1, i2 += inc2)
	  scm_array_set_x (ra0,
		SCM_SUBRF (proc) (RVREF (ra1, i1, e1), RVREF (ra2, i2, e2)),
		SCM_MAKINUM (i0));
    }
  return 1;
}


#ifdef __STDC__
static int
ramap_a (SCM ra0, SCM proc, SCM ras)
#else
static int
ramap_a (ra0, proc, ras)
     SCM ra0;
     SCM proc;
     SCM ras;
#endif
{
  SCM e0 = SCM_UNDEFINED, e1 = SCM_UNDEFINED;
  long n = SCM_ARRAY_DIMS (ra0)->ubnd - SCM_ARRAY_DIMS (ra0)->lbnd + 1;
  scm_sizet i0 = SCM_ARRAY_BASE (ra0);
  long inc0 = SCM_ARRAY_DIMS (ra0)->inc;
  ra0 = SCM_ARRAY_V (ra0);
  if SCM_NULLP
    (ras)
      for (; n-- > 0; i0 += inc0)
	scm_array_set_x (ra0, SCM_SUBRF (proc) (RVREF (ra0, i0, e0), SCM_UNDEFINED), SCM_MAKINUM (i0));
  else
    {
      SCM ra1 = SCM_CAR (ras);
      scm_sizet i1 = SCM_ARRAY_BASE (ra1);
      long inc1 = SCM_ARRAY_DIMS (ra1)->inc;
      ra1 = SCM_ARRAY_V (ra1);
      for (; n-- > 0; i0 += inc0, i1 += inc1)
	scm_array_set_x (ra0, SCM_SUBRF (proc) (RVREF (ra0, i0, e0), RVREF (ra1, i1, e1)),
	      SCM_MAKINUM (i0));
    }
  return 1;
}

SCM_PROC(s_serial_array_map, "serial-array-map", 2, 0, 1, scm_array_map);
SCM_PROC(s_array_map, "array-map", 2, 0, 1, scm_array_map);
#ifdef __STDC__
SCM
scm_array_map (SCM ra0, SCM proc, SCM lra)
#else
SCM
scm_array_map (ra0, proc, lra)
     SCM ra0;
     SCM proc;
     SCM lra;
#endif
{
  SCM_ASSERT (SCM_BOOL_T == scm_procedure_p (proc), proc, SCM_ARG2, s_array_map);
  switch (SCM_TYP7 (proc))
      {
      default:
      gencase:
	scm_ramapc (ramap, proc, ra0, lra, s_array_map);
	return SCM_UNSPECIFIED;
      case scm_tc7_subr_1:
	scm_ramapc (ramap_1, proc, ra0, lra, s_array_map);
	return SCM_UNSPECIFIED;
      case scm_tc7_subr_2:
      case scm_tc7_subr_2o:
	scm_ramapc (ramap_2o, proc, ra0, lra, s_array_map);
	return SCM_UNSPECIFIED;
      case scm_tc7_cxr:
	if (!SCM_SUBRF (proc))
	  goto gencase;
	scm_ramapc (ramap_cxr, proc, ra0, lra, s_array_map);
	return SCM_UNSPECIFIED;
      case scm_tc7_rpsubr:
	{
	  ra_iproc *p;
	  if (SCM_FALSEP (scm_array_p (ra0, SCM_BOOL_T)))
	    goto gencase;
	  scm_array_fill_x (ra0, SCM_BOOL_T);
	  for (p = ra_rpsubrs; p->name; p++)
	    if (proc == p->sproc)
	      {
		while (SCM_NNULLP (lra) && SCM_NNULLP (SCM_CDR (lra)))
		  {
		    scm_ramapc (p->vproc, SCM_UNDEFINED, ra0, lra, s_array_map);
		    lra = SCM_CDR (lra);
		  }
		return SCM_UNSPECIFIED;
	      }
	  while (SCM_NNULLP (lra) && SCM_NNULLP (SCM_CDR (lra)))
	    {
	      scm_ramapc (ramap_rp, proc, ra0, lra, s_array_map);
	      lra = SCM_CDR (lra);
	    }
	  return SCM_UNSPECIFIED;
	}
      case scm_tc7_asubr:
	if SCM_NULLP
	  (lra)
	    {
	      SCM prot, fill = SCM_SUBRF (proc) (SCM_UNDEFINED, SCM_UNDEFINED);
	      if SCM_INUMP
		(fill)
		  {
		    prot = scm_array_prototype (ra0);
		    if (SCM_NIMP (prot) && SCM_INEXP (prot))
		      fill = scm_makdbl ((double) SCM_INUM (fill), 0.0);
		  }

	      scm_array_fill_x (ra0, fill);
	    }
	else
	  {
	    SCM tail, ra1 = SCM_CAR (lra);
	    SCM v0 = (SCM_NIMP (ra0) && SCM_ARRAYP (ra0) ? SCM_ARRAY_V (ra0) : ra0);
	    ra_iproc *p;
	    /* Check to see if order might matter.
	       This might be an argument for a separate
	       SERIAL-ARRAY-MAP! */
	    if (v0 == ra1 || (SCM_NIMP (ra1) && SCM_ARRAYP (ra1) && v0 == SCM_ARRAY_V (ra1)))
	      if (ra0 != ra1 || (SCM_ARRAYP(ra0) && !SCM_ARRAY_CONTP(ra0)))
		goto gencase;
	    for (tail = SCM_CDR (lra); SCM_NNULLP (tail); tail = SCM_CDR (tail))
	      {
		ra1 = SCM_CAR (tail);
		if (v0 == ra1 || (SCM_NIMP (ra1) && SCM_ARRAYP (ra1) && v0 == SCM_ARRAY_V (ra1)))
		  goto gencase;
	      }
	    for (p = ra_asubrs; p->name; p++)
	      if (proc == p->sproc)
		{
		  if (ra0 != SCM_CAR (lra))
		    scm_ramapc (scm_array_identity, SCM_UNDEFINED, ra0, scm_cons (SCM_CAR (lra), SCM_EOL), s_array_map);
		  lra = SCM_CDR (lra);
		  while (1)
		    {
		      scm_ramapc (p->vproc, SCM_UNDEFINED, ra0, lra, s_array_map);
		      if (SCM_IMP (lra) || SCM_IMP (SCM_CDR (lra)))
			return SCM_UNSPECIFIED;
		      lra = SCM_CDR (lra);
		    }
		}
	    scm_ramapc (ramap_2o, proc, ra0, lra, s_array_map);
	    lra = SCM_CDR (lra);
	    if SCM_NIMP
	      (lra)
		for (lra = SCM_CDR (lra); SCM_NIMP (lra); lra = SCM_CDR (lra))
		  scm_ramapc (ramap_a, proc, ra0, lra, s_array_map);
	  }
	return SCM_UNSPECIFIED;
      }
}

#ifdef __STDC__
static int
rafe (SCM ra0, SCM proc, SCM ras)
#else
static int
rafe (ra0, proc, ras)
     SCM ra0;
     SCM proc;
     SCM ras;
#endif
{
  long i = SCM_ARRAY_DIMS (ra0)->lbnd;
  scm_sizet i0 = SCM_ARRAY_BASE (ra0);
  long inc0 = SCM_ARRAY_DIMS (ra0)->inc;
  long n = SCM_ARRAY_DIMS (ra0)->ubnd;
  ra0 = SCM_ARRAY_V (ra0);
  if SCM_NULLP
    (ras)
      for (; i <= n; i++, i0 += inc0)
	scm_apply (proc, scm_cvref (ra0, i0, SCM_UNDEFINED), scm_listofnull);
  else
    {
      SCM ra1 = SCM_CAR (ras);
      SCM args, *ve = &ras;
      scm_sizet k, i1 = SCM_ARRAY_BASE (ra1);
      long inc1 = SCM_ARRAY_DIMS (ra1)->inc;
      ra1 = SCM_ARRAY_V (ra1);
      ras = SCM_CDR (ras);
      if SCM_NULLP
	(ras)
	  ras = scm_nullvect;
      else
	{
	  ras = scm_vector (ras);
	  ve = SCM_VELTS (ras);
	}
      for (; i <= n; i++, i0 += inc0, i1 += inc1)
	{
	  args = SCM_EOL;
	  for (k = SCM_LENGTH (ras); k--;)
	    args = scm_cons (scm_uniform_vector_ref (ve[k], SCM_MAKINUM (i)), args);
	  args = scm_cons2 (scm_cvref (ra0, i0, SCM_UNDEFINED), scm_cvref (ra1, i1, SCM_UNDEFINED), args);
	  scm_apply (proc, args, SCM_EOL);
	}
    }
  return 1;
}


SCM_PROC(s_array_for_each, "array-for-each", 2, 0, 1, scm_array_for_each);
#ifdef __STDC__
SCM
scm_array_for_each (SCM proc, SCM ra0, SCM lra)
#else
SCM
scm_array_for_each (proc, ra0, lra)
     SCM proc;
     SCM ra0;
     SCM lra;
#endif
{
  SCM_ASSERT (SCM_BOOL_T == scm_procedure_p (proc), proc, SCM_ARG1, s_array_for_each);
  scm_ramapc (rafe, proc, ra0, lra, s_array_for_each);
  return SCM_UNSPECIFIED;
}

SCM_PROC(s_array_index_map_x, "array-index-map!", 2, 0, 0, scm_array_index_map_x);
#ifdef __STDC__
SCM
scm_array_index_map_x (SCM ra, SCM proc)
#else
SCM
scm_array_index_map_x (ra, proc)
     SCM ra;
     SCM proc;
#endif
{
  scm_sizet i;
  SCM_ASSERT (SCM_NIMP (ra), ra, SCM_ARG1, s_array_index_map_x);
  SCM_ASSERT (SCM_BOOL_T == scm_procedure_p (proc), proc, SCM_ARG2, s_array_index_map_x);
  switch SCM_TYP7
    (ra)
      {
      default:
      badarg:scm_wta (ra, (char *) SCM_ARG1, s_array_index_map_x);
      case scm_tc7_vector:
	{
	  SCM *ve = SCM_VELTS (ra);
	  for (i = 0; i < SCM_LENGTH (ra); i++)
	    ve[i] = scm_apply (proc, SCM_MAKINUM (i), scm_listofnull);
	  return SCM_UNSPECIFIED;
	}
      case scm_tc7_string:
      case scm_tc7_bvect:
      case scm_tc7_uvect:
      case scm_tc7_ivect:
      case scm_tc7_fvect:
      case scm_tc7_dvect:
      case scm_tc7_cvect:
	for (i = 0; i < SCM_LENGTH (ra); i++)
	  scm_array_set_x (ra, scm_apply (proc, SCM_MAKINUM (i), scm_listofnull), SCM_MAKINUM (i));
	return SCM_UNSPECIFIED;
      case scm_tc7_smob:
	SCM_ASRTGO (SCM_ARRAYP (ra), badarg);
	{
	  SCM args = SCM_EOL;
	  SCM inds = scm_make_uve (SCM_ARRAY_NDIM (ra), SCM_MAKINUM (-1L));
	  long *vinds = SCM_VELTS (inds);
	  int j, k, kmax = SCM_ARRAY_NDIM (ra) - 1;
	  for (k = 0; k <= kmax; k++)
	    vinds[k] = SCM_ARRAY_DIMS (ra)[k].lbnd;
	  k = kmax;
	  do
	    {
	      if (k == kmax)
		{
		  vinds[k] = SCM_ARRAY_DIMS (ra)[k].lbnd;
		  i = cind (ra, inds);
		  for (; vinds[k] <= SCM_ARRAY_DIMS (ra)[k].ubnd; vinds[k]++)
		    {
		      for (j = kmax + 1, args = SCM_EOL; j--;)
			args = scm_cons (SCM_MAKINUM (vinds[j]), args);
		      scm_array_set_x (SCM_ARRAY_V (ra), scm_apply (proc, args, SCM_EOL), SCM_MAKINUM (i));
		      i += SCM_ARRAY_DIMS (ra)[k].inc;
		    }
		  k--;
		  continue;
		}
	      if (vinds[k] < SCM_ARRAY_DIMS (ra)[k].ubnd)
		{
		  vinds[k]++;
		  k++;
		  continue;
		}
	      vinds[k] = SCM_ARRAY_DIMS (ra)[k].lbnd - 1;
	      k--;
	    }
	  while (k >= 0);
	  return SCM_UNSPECIFIED;
	}
      }
}

#ifdef __STDC__
static int
raeql_1 (SCM ra0, SCM as_equal, SCM ra1)
#else
static int
raeql_1 (ra0, as_equal, ra1)
     SCM ra0;
     SCM as_equal;
     SCM ra1;
#endif
{
  SCM e0 = SCM_UNDEFINED, e1 = SCM_UNDEFINED;
  scm_sizet i0 = 0, i1 = 0;
  long inc0 = 1, inc1 = 1;
  scm_sizet n = SCM_LENGTH (ra0);
  ra1 = SCM_CAR (ra1);
  if SCM_ARRAYP
    (ra0)
      {
	n = SCM_ARRAY_DIMS (ra0)->ubnd - SCM_ARRAY_DIMS (ra0)->lbnd + 1;
	i0 = SCM_ARRAY_BASE (ra0);
	inc0 = SCM_ARRAY_DIMS (ra0)->inc;
	ra0 = SCM_ARRAY_V (ra0);
      }
  if SCM_ARRAYP
    (ra1)
      {
	i1 = SCM_ARRAY_BASE (ra1);
	inc1 = SCM_ARRAY_DIMS (ra1)->inc;
	ra1 = SCM_ARRAY_V (ra1);
      }
  switch SCM_TYP7
    (ra0)
      {
      case scm_tc7_vector:
      default:
	for (; n--; i0 += inc0, i1 += inc1)
	  {
	    if SCM_FALSEP
	      (as_equal)
		{
		  if SCM_FALSEP
		    (scm_array_equal_p (RVREF (ra0, i0, e0), RVREF (ra1, i1, e1)))
		      return 0;
		}
	    else if SCM_FALSEP
	      (scm_equal_p (RVREF (ra0, i0, e0), RVREF (ra1, i1, e1)))
		return 0;
	  }
	return 1;
      case scm_tc7_string:
	{
	  char *v0 = SCM_CHARS (ra0) + i0;
	  char *v1 = SCM_CHARS (ra1) + i1;
	  for (; n--; v0 += inc0, v1 += inc1)
	    if (*v0 != *v1)
	      return 0;
	  return 1;
	}
      case scm_tc7_bvect:
	for (; n--; i0 += inc0, i1 += inc1)
	  if (BVE_REF (ra0, i0) != BVE_REF (ra1, i1))
	    return 0;
	return 1;
      case scm_tc7_uvect:
      case scm_tc7_ivect:
	{
	  long *v0 = (long *) SCM_VELTS (ra0) + i0;
	  long *v1 = (long *) SCM_VELTS (ra1) + i1;
	  for (; n--; v0 += inc0, v1 += inc1)
	    if (*v0 != *v1)
	      return 0;
	  return 1;
	}
#ifdef SCM_FLOATS
#ifdef SCM_SINGLES
      case scm_tc7_fvect:
	{
	  float *v0 = (float *) SCM_VELTS (ra0) + i0;
	  float *v1 = (float *) SCM_VELTS (ra1) + i1;
	  for (; n--; v0 += inc0, v1 += inc1)
	    if (*v0 != *v1)
	      return 0;
	  return 1;
	}
#endif /* SCM_SINGLES */
      case scm_tc7_dvect:
	{
	  double *v0 = (double *) SCM_VELTS (ra0) + i0;
	  double *v1 = (double *) SCM_VELTS (ra1) + i1;
	  for (; n--; v0 += inc0, v1 += inc1)
	    if (*v0 != *v1)
	      return 0;
	  return 1;
	}
      case scm_tc7_cvect:
	{
	  double (*v0)[2] = (double (*)[2]) SCM_VELTS (ra0) + i0;
	  double (*v1)[2] = (double (*)[2]) SCM_VELTS (ra1) + i1;
	  for (; n--; v0 += inc0, v1 += inc1)
	    {
	      if ((*v0)[0] != (*v1)[0])
		return 0;
	      if ((*v0)[1] != (*v1)[1])
		return 0;
	    }
	  return 1;
	}
#endif /* SCM_FLOATS */
      }
}


#ifdef __STDC__
static int
raeql (SCM ra0, SCM as_equal, SCM ra1)
#else
static int
raeql (ra0, as_equal, ra1)
     SCM ra0;
     SCM as_equal;
     SCM ra1;
#endif
{
  SCM v0 = ra0, v1 = ra1;
  scm_array_dim dim0, dim1;
  scm_array_dim *s0 = &dim0, *s1 = &dim1;
  scm_sizet bas0 = 0, bas1 = 0;
  int k, unroll = 1, vlen = 1, ndim = 1;
  if SCM_ARRAYP
    (ra0)
      {
	ndim = SCM_ARRAY_NDIM (ra0);
	s0 = SCM_ARRAY_DIMS (ra0);
	bas0 = SCM_ARRAY_BASE (ra0);
	v0 = SCM_ARRAY_V (ra0);
      }
  else
    {
      s0->inc = 1;
      s0->lbnd = 0;
      s0->ubnd = SCM_LENGTH (v0) - 1;
      unroll = 0;
    }
  if SCM_ARRAYP
    (ra1)
      {
	if (ndim != SCM_ARRAY_NDIM (ra1))
	  return 0;
	s1 = SCM_ARRAY_DIMS (ra1);
	bas1 = SCM_ARRAY_BASE (ra1);
	v1 = SCM_ARRAY_V (ra1);
      }
  else
    {
      if (1 != ndim)
	return SCM_BOOL_F;
      s1->inc = 1;
      s1->lbnd = 0;
      s1->ubnd = SCM_LENGTH (v1) - 1;
      unroll = 0;
    }
  if (SCM_TYP7 (v0) != SCM_TYP7 (v1))
    return 0;
  for (k = ndim; k--;)
    {
      if (s0[k].lbnd != s1[k].lbnd || s0[k].ubnd != s1[k].ubnd)
	return 0;
      if (unroll)
	{
	  unroll = (s0[k].inc == s1[k].inc);
	  vlen *= s0[k].ubnd - s1[k].lbnd + 1;
	}
    }
  if (unroll && bas0 == bas1 && v0 == v1)
    return SCM_BOOL_T;
  return scm_ramapc (raeql_1, as_equal, ra0, scm_cons (ra1, SCM_EOL), "");
}

#ifdef __STDC__
SCM
scm_raequal (SCM ra0, SCM ra1)
#else
SCM
scm_raequal (ra0, ra1)
     SCM ra0;
     SCM ra1;
#endif
{
  return (raeql (ra0, SCM_BOOL_T, ra1) ? SCM_BOOL_T : SCM_BOOL_F);
}

static char s_array_equal_p[] = "array-equal?";

#ifdef __STDC__
SCM
scm_array_equal_p (SCM ra0, SCM ra1)
#else
SCM
scm_array_equal_p (ra0, ra1)
     SCM ra0;
     SCM ra1;
#endif
{
  if (SCM_IMP (ra0) || SCM_IMP (ra1))
  callequal:return scm_equal_p (ra0, ra1);
  switch SCM_TYP7
    (ra0)
      {
      default:
	goto callequal;
      case scm_tc7_bvect:
      case scm_tc7_string:
      case scm_tc7_uvect:
      case scm_tc7_ivect:
      case scm_tc7_fvect:
      case scm_tc7_dvect:
      case scm_tc7_cvect:
      case scm_tc7_vector:
	break;
      case scm_tc7_smob:
	if (!SCM_ARRAYP (ra0))
	  goto callequal;
      }
  switch SCM_TYP7
    (ra1)
      {
      default:
	goto callequal;
      case scm_tc7_bvect:
      case scm_tc7_string:
      case scm_tc7_uvect:
      case scm_tc7_ivect:
      case scm_tc7_fvect:
      case scm_tc7_dvect:
      case scm_tc7_cvect:
      case scm_tc7_vector:
	break;
      case scm_tc7_smob:
	if (!SCM_ARRAYP (ra1))
	  goto callequal;
      }
  return (raeql (ra0, SCM_BOOL_F, ra1) ? SCM_BOOL_T : SCM_BOOL_F);
}


/* These tables are a kluge that will not scale well when more
 * vectorized subrs are added.  It is tempting to steal some bits from
 * the SCM_CAR of all subrs (like those selected by SCM_SMOBNUM) to hold an
 * offset into a table of vectorized subrs.  
 */

static ra_iproc ra_rpsubrs[] =
{
  {"=", SCM_UNDEFINED, scm_ra_eqp},
  {"<", SCM_UNDEFINED, scm_ra_lessp},
  {"<=", SCM_UNDEFINED, scm_ra_leqp},
  {">", SCM_UNDEFINED, scm_ra_grp},
  {">=", SCM_UNDEFINED, scm_ra_greqp},
  {0, 0, 0}
};

static ra_iproc ra_asubrs[] =
{
  {"+", SCM_UNDEFINED, scm_ra_sum},
  {"-", SCM_UNDEFINED, scm_ra_difference},
  {"*", SCM_UNDEFINED, scm_ra_product},
  {"/", SCM_UNDEFINED, scm_ra_divide},
  {0, 0, 0}
};

static void init_raprocs (subra)
     ra_iproc *subra;
{
  for (; subra->name; subra++)
    subra->sproc = SCM_CDR (scm_intern (subra->name, strlen (subra->name)));
}

#ifdef __STDC__
void
scm_init_ramap (void)
#else
void
scm_init_ramap ()
#endif
{
  init_raprocs (ra_rpsubrs);
  init_raprocs (ra_asubrs);
  scm_make_subr (s_array_equal_p, scm_tc7_rpsubr, scm_array_equal_p);
  scm_smobs[0x0ff & (scm_tc16_array >> 8)].equalp = scm_raequal;
#include "ramap.x"
  scm_add_feature (s_array_for_each);
}

#endif /* ARRAYS */