server/server/dynbuf.C

/*
 * This file is part of Deliantra, the Roguelike Realtime MMORPG.
 * 
 * Copyright (©) 2005,2006,2007,2008,2009 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
 * 
 * Deliantra is free software: you can redistribute it and/or modify it under
 * the terms of the Affero GNU General Public License as published by the
 * Free Software Foundation, either version 3 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 Affero GNU General Public License
 * and the GNU General Public License along with this program. If not, see
 * <http://www.gnu.org/licenses/>.
 * 
 * The authors can be reached via e-mail to <support@deliantra.net>
 */

#include "global.h"

#include <cstdio>

void
dynbuf::init (int initial)
{
  cextend = extend;
  _size = 0;

  first = last = (chunk *)salloc<char> (sizeof (chunk) + initial);
  first->alloc = sizeof (chunk) + initial;
  first->next = 0;

  ptr = first->data;
  end = ptr + initial;
}

// frees a full chain and sets the pointer to zero
void
dynbuf::free (chunk *&chain)
{
  while (chain)
    {
      chunk *next = chain->next;

      sfree<char> ((char *)chain, chain->alloc);
      chain = next;
    }
}

void
dynbuf::clear ()
{
  cextend = extend;
  free (first->next);

  _size = 0;
  ptr = first->data;
  end = ptr + first->alloc - sizeof (chunk);
  last = first;
}

void
dynbuf::finalise ()
{
  // finalise current chunk
  _size += last->size = ptr - last->data;
}

void
dynbuf::reserve (int size)
{
  finalise ();

  do
    {
      cextend += cextend >> 1;
      cextend = (cextend + 15) & ~15;
    }
  while (cextend < size);

  chunk *add = (chunk *) salloc<char> (sizeof (chunk) + cextend);
  add->alloc = sizeof (chunk) + cextend;
  add->next = 0;

  last->next = add;
  last = add;

  ptr = last->data;
  end = ptr + cextend;
}

void
dynbuf::linearise (void *data)
{
  last->size = ptr - last->data;

  for (chunk *c = first; c; c = c->next)
    {
      memcpy (data, c->data, c->size);
      data = (void *)(((char *)data) + c->size);
    }
}

char *
dynbuf::_linearise (int extra)
{
  finalise ();

  chunk *add = (chunk *) salloc<char> (sizeof (chunk) + _size + extra);
  add->alloc = sizeof (chunk) + _size;
  add->next = 0;

  linearise ((void *)add->data);
  free (first);

  first = last = add;
  ptr = last->data + _size;
  end = ptr + extra;
  _size = 0;

  return first->data;
}

dynbuf::operator std::string ()
{
  // could optimise
  return std::string (linearise (), size ());
}

void
dynbuf::splice (int offset, int olen, const char *s, int slen)
{
  // how much bytes to extend (negative if shrinking)
  int adjust = slen - olen;

  // linearise, unless everything fits in the last chunk
  if (offset < _size || room () < adjust)
    _linearise (max (adjust, 0));

  offset -= _size; // offset into chunk

  // now move tail to final position
  char *pos = last->data + offset;
  char *src = pos + olen;
  char *dst = pos + slen;
  memmove (dst, src, ptr - src);

  // now copy new content
  memcpy (pos, s, slen);

  // finally adjust length
  ptr += adjust;
}

void
dynbuf_text::vprintf (const char *format, va_list ap)
{
  int len;

  {
    force (128);

    va_list apc;
    va_copy (apc, ap);
    len = vsnprintf (ptr, end - ptr, format, apc);
    va_end (apc);

    assert (len >= 0); // shield against broken vsnprintf's

    // was enough room available
    if (ptr + len < end)
      {
        ptr += len;
        return;
      }
  }

  // longer, try harder
  vsnprintf (force (len + 1), len + 1, format, ap);

  ptr += len;
}

void
dynbuf_text::printf (const char *format, ...)
{
  va_list ap;
  va_start (ap, format);
  vprintf (format, ap);
  va_end (ap);
}

// simply return a mask with "bits" bits set
static inline uint64
m (int b)
{
  return (uint64 (1) << b) - 1;
}

// convert 9 digits to ascii, using only a single multiplication
// (depending on cpu and compiler).
// will generate a single 0 as output when v=lz=0
static inline char *
i2a_9 (char *ptr, uint32 v, bool lz)
{
  // convert to 4.56 fixed-point representation
  // this should be optimal on 64 bit cpus, and rather
  // slow on 32 bit cpus. go figure :)
  const int bits = 7*8; // 7 bits per post-comma digit

  uint64 u = v * ((m (bits) + 100000000) / 100000000); // 10**8

  if (lz)
    {
      // output leading zeros
      // good compilers will compile this into only shifts, masks and adds
      *ptr++ = char (u >> (bits - 0)) + '0'; u = (u & m (bits - 0)) * 5;
      *ptr++ = char (u >> (bits - 1)) + '0'; u = (u & m (bits - 1)) * 5;
      *ptr++ = char (u >> (bits - 2)) + '0'; u = (u & m (bits - 2)) * 5;
      *ptr++ = char (u >> (bits - 3)) + '0'; u = (u & m (bits - 3)) * 5;
      *ptr++ = char (u >> (bits - 4)) + '0'; u = (u & m (bits - 4)) * 5;
      *ptr++ = char (u >> (bits - 5)) + '0'; u = (u & m (bits - 5)) * 5;
      *ptr++ = char (u >> (bits - 6)) + '0'; u = (u & m (bits - 6)) * 5;
      *ptr++ = char (u >> (bits - 7)) + '0'; u = (u & m (bits - 7)) * 5;
      *ptr++ = char (u >> (bits - 8)) + '0';
    }
  else
    {
      // do not output leading zeroes (except if v == 0)
      // good compilers will compile this into completely branchless code
      char digit, nz = 0;

      digit = (u >> (bits - 0)); *ptr = digit + '0'; nz |= digit; ptr += nz ? 1 : 0; u = (u & m (bits - 0)) * 5;
      digit = (u >> (bits - 1)); *ptr = digit + '0'; nz |= digit; ptr += nz ? 1 : 0; u = (u & m (bits - 1)) * 5;
      digit = (u >> (bits - 2)); *ptr = digit + '0'; nz |= digit; ptr += nz ? 1 : 0; u = (u & m (bits - 2)) * 5;
      digit = (u >> (bits - 3)); *ptr = digit + '0'; nz |= digit; ptr += nz ? 1 : 0; u = (u & m (bits - 3)) * 5;
      digit = (u >> (bits - 4)); *ptr = digit + '0'; nz |= digit; ptr += nz ? 1 : 0; u = (u & m (bits - 4)) * 5;
      digit = (u >> (bits - 5)); *ptr = digit + '0'; nz |= digit; ptr += nz ? 1 : 0; u = (u & m (bits - 5)) * 5;
      digit = (u >> (bits - 6)); *ptr = digit + '0'; nz |= digit; ptr += nz ? 1 : 0; u = (u & m (bits - 6)) * 5;
      digit = (u >> (bits - 7)); *ptr = digit + '0'; nz |= digit; ptr += nz ? 1 : 0; u = (u & m (bits - 7)) * 5;
      digit = (u >> (bits - 8)); *ptr = digit + '0'; nz |= digit; ptr += 1;
    }

  return ptr;
}

void
dynbuf_text::add (sint32 i)
{
  force (sint32_digits);

  *ptr = '-'; ptr += i < 0 ? 1 : 0;
  uint32 u = i < 0 ? -i : i;

  if (expect_true (u < 10)) // we have a lot of single-digit numbers, so optimise
    fadd (char (u + '0'));
  else if (expect_true (u < 1000000000)) // 9 0's
    ptr = i2a_9 (ptr, u, false);
  else
    {
      sint32 div = u / 1000000000;
      uint32 rem = u % 1000000000;

      ptr = i2a_9 (ptr, div, false);
      ptr = i2a_9 (ptr, rem, true);
    }
}

void
dynbuf_text::add (sint64 i)
{
  force (sint64_digits);

  *ptr = '-'; ptr += i < 0 ? 1 : 0;
  uint64 u = i < 0 ? -i : i;

  // split the number into a 1-digit part
  // (#19) and two 9 digit parts (9..18 and 0..8)

  // good compilers will only use multiplications here

  if (u < 10) // we have a lot of single-digit numbers, so optimise
    fadd (char (u + '0'));
  else if (expect_true (u < 1000000000)) // 9 0's
    ptr = i2a_9 (ptr, u, false);
  else if (expect_true (u < UINT64_C (1000000000000000000))) // 18 0's
    {
      sint32 div = u / 1000000000;
      uint32 rem = u % 1000000000;

      ptr = i2a_9 (ptr, div, false);
      ptr = i2a_9 (ptr, rem, true);
    }
  else
    {
      // a biggy
      sint32 div = u / UINT64_C (1000000000000000000);
      uint64 rem = u % UINT64_C (1000000000000000000);

      fadd (char (div + '0'));
      u = rem;

      {
        sint32 div = u / 1000000000;
        uint32 rem = u % 1000000000;

        ptr = i2a_9 (ptr, div, true);
        ptr = i2a_9 (ptr, rem, true);
      }
    }
}

dynbuf_text::operator char *()
{
  *this << '\0';
  linearise ();
  --ptr;
  return first->data;
}

void
dynbuf_text::add_abilities (const char *name, uint32 abilities)
{
  if (!abilities)
    return;

  *this << '(' << name;

  const char *sep = ": ";
  for_all_bits_sparse_32 (abilities, i)
    {
      *this << sep; sep = ", ";
      *this << attacks [i];
    }

  *this << ')';
}

void
dynbuf_text::add_paths (const char *name, uint32 paths)
{
  if (!paths)
    return;

  *this << '(' << name;

  const char *sep = ": ";
  for (int i = 0; i < NRSPELLPATHS; ++i)
    if (paths & (1 << i))
      {
        *this << sep; sep = ", ";
        *this << spellpathnames [i];
      }

  *this << ')';
}

#if 0
struct dynbuf_test_class {
  dynbuf_test_class ()
  {
    sint64 s = 0;
    for (int i = 0; i < 10000000; ++i)
      {
        char b1[256], b2[256];

        dynbuf_text db;
        db.add (s);
        db.add (char (0));

        db.linearise (b1);
        sprintf (b2, "%ld", s);

        if (strcmp (b1, b2))
          printf ("<%s,%s>\n", b1, b2);

        if (i < 20)
          s = (sint64) pow (10., i);
        else
          s = (sint64) exp (random () * (43.6682723752766 / RAND_MAX));
      }

    exit (0);
  }
} dynbuf_test;
#endif

Revision:	1.29
Committed:	Wed Nov 11 03:52:45 2009 UTC (14 years, 6 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.28:	+5 -6 lines
Log Message:	fix icecube thawing bug
#	User	Rev	Content
1	root	1.15	/*
2	root	1.20	* This file is part of Deliantra, the Roguelike Realtime MMORPG.
3	root	1.15	*
4	root	1.27	* Copyright (©) 2005,2006,2007,2008,2009 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5	root	1.15	*
6	root	1.24	* Deliantra is free software: you can redistribute it and/or modify it under
7			* the terms of the Affero GNU General Public License as published by the
8			* Free Software Foundation, either version 3 of the License, or (at your
9			* option) any later version.
10	root	1.15	*
11	root	1.16	* This program is distributed in the hope that it will be useful,
12			* but WITHOUT ANY WARRANTY; without even the implied warranty of
13			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14			* GNU General Public License for more details.
15	root	1.15	*
16	root	1.24	* You should have received a copy of the Affero GNU General Public License
17			* and the GNU General Public License along with this program. If not, see
18			* <http://www.gnu.org/licenses/>.
19	root	1.15	*
20	root	1.20	* The authors can be reached via e-mail to <support@deliantra.net>
21	root	1.15	*/
22
23	root	1.1	#include "global.h"
24
25			#include <cstdio>
26
27	root	1.17	void
28			dynbuf::init (int initial)
29	root	1.1	{
30	root	1.23	cextend = extend;
31	root	1.1	_size = 0;
32	root	1.5
33	root	1.8	first = last = (chunk *)salloc<char> (sizeof (chunk) + initial);
34			first->alloc = sizeof (chunk) + initial;
35	root	1.1	first->next = 0;
36	root	1.8
37	root	1.5	ptr = first->data;
38	root	1.9	end = ptr + initial;
39	root	1.1	}
40
41	root	1.22	// frees a full chain and sets the pointer to zero
42	root	1.5	void
43	root	1.17	dynbuf::free (chunk *&chain)
44	root	1.1	{
45	root	1.17	while (chain)
46	root	1.1	{
47	root	1.17	chunk *next = chain->next;
48	root	1.5
49	root	1.17	sfree<char> ((char *)chain, chain->alloc);
50			chain = next;
51	root	1.1	}
52	root	1.5	}
53	root	1.1
54	root	1.5	void
55	root	1.10	dynbuf::clear ()
56			{
57	root	1.23	cextend = extend;
58	root	1.17	free (first->next);
59
60	root	1.10	_size = 0;
61			ptr = first->data;
62	root	1.17	end = ptr + first->alloc - sizeof (chunk);
63	root	1.22	last = first;
64	root	1.10	}
65
66			void
67	root	1.17	dynbuf::finalise ()
68	root	1.1	{
69			// finalise current chunk
70			_size += last->size = ptr - last->data;
71			}
72
73	root	1.5	void
74	root	1.17	dynbuf::reserve (int size)
75	root	1.1	{
76	root	1.17	finalise ();
77	root	1.1
78			do
79			{
80	root	1.23	cextend += cextend >> 1;
81			cextend = (cextend + 15) & ~15;
82	root	1.1	}
83	root	1.23	while (cextend < size);
84	root	1.1
85	root	1.23	chunk add = (chunk ) salloc<char> (sizeof (chunk) + cextend);
86			add->alloc = sizeof (chunk) + cextend;
87	root	1.1	add->next = 0;
88
89			last->next = add;
90			last = add;
91
92	root	1.5	ptr = last->data;
93	root	1.23	end = ptr + cextend;
94	root	1.1	}
95
96	root	1.5	void
97			dynbuf::linearise (void *data)
98	root	1.1	{
99			last->size = ptr - last->data;
100
101	root	1.10	for (chunk *c = first; c; c = c->next)
102	root	1.1	{
103	root	1.10	memcpy (data, c->data, c->size);
104			data = (void )(((char )data) + c->size);
105	root	1.1	}
106			}
107
108	root	1.5	char *
109	root	1.26	dynbuf::_linearise (int extra)
110	root	1.1	{
111	root	1.17	finalise ();
112
113	root	1.26	chunk add = (chunk ) salloc<char> (sizeof (chunk) + _size + extra);
114	root	1.17	add->alloc = sizeof (chunk) + _size;
115			add->next = 0;
116
117			linearise ((void *)add->data);
118			free (first);
119	root	1.1
120	root	1.17	first = last = add;
121			ptr = last->data + _size;
122	root	1.26	end = ptr + extra;
123	root	1.17	_size = 0;
124	root	1.1
125			return first->data;
126			}
127
128	root	1.7	dynbuf::operator std::string ()
129			{
130			// could optimise
131			return std::string (linearise (), size ());
132			}
133
134			void
135	root	1.26	dynbuf::splice (int offset, int olen, const char *s, int slen)
136			{
137			// how much bytes to extend (negative if shrinking)
138			int adjust = slen - olen;
139
140			// linearise, unless everything fits in the last chunk
141			if (offset < _size \|\| room () < adjust)
142			_linearise (max (adjust, 0));
143
144			offset -= _size; // offset into chunk
145
146			// now move tail to final position
147			char *pos = last->data + offset;
148			char *src = pos + olen;
149			char *dst = pos + slen;
150			memmove (dst, src, ptr - src);
151
152			// now copy new content
153			memcpy (pos, s, slen);
154
155			// finally adjust length
156			ptr += adjust;
157			}
158
159			void
160	root	1.18	dynbuf_text::vprintf (const char *format, va_list ap)
161	root	1.7	{
162			int len;
163
164			{
165			force (128);
166
167	root	1.18	va_list apc;
168			va_copy (apc, ap);
169	root	1.19	len = vsnprintf (ptr, end - ptr, format, apc);
170	root	1.18	va_end (apc);
171	root	1.7
172			assert (len >= 0); // shield against broken vsnprintf's
173
174			// was enough room available
175	root	1.9	if (ptr + len < end)
176	root	1.7	{
177	root	1.13	ptr += len;
178	root	1.7	return;
179			}
180			}
181
182			// longer, try harder
183	root	1.18	vsnprintf (force (len + 1), len + 1, format, ap);
184
185			ptr += len;
186			}
187
188			void
189			dynbuf_text::printf (const char *format, ...)
190			{
191	root	1.7	va_list ap;
192			va_start (ap, format);
193	root	1.18	vprintf (format, ap);
194	root	1.7	va_end (ap);
195			}
196
197	root	1.11	// simply return a mask with "bits" bits set
198	root	1.28	static inline uint64
199	root	1.11	m (int b)
200	root	1.1	{
201	root	1.11	return (uint64 (1) << b) - 1;
202			}
203	root	1.1
204	root	1.11	// convert 9 digits to ascii, using only a single multiplication
205			// (depending on cpu and compiler).
206			// will generate a single 0 as output when v=lz=0
207	root	1.28	static inline char *
208	root	1.11	i2a_9 (char *ptr, uint32 v, bool lz)
209			{
210			// convert to 4.56 fixed-point representation
211			// this should be optimal on 64 bit cpus, and rather
212			// slow on 32 bit cpus. go figure :)
213	root	1.12	const int bits = 7*8; // 7 bits per post-comma digit
214	root	1.11
215			uint64 u = v * ((m (bits) + 100000000) / 100000000); // 10**8
216
217			if (lz)
218			{
219			// output leading zeros
220			// good compilers will compile this into only shifts, masks and adds
221			ptr++ = char (u >> (bits - 0)) + '0'; u = (u & m (bits - 0)) 5;
222			ptr++ = char (u >> (bits - 1)) + '0'; u = (u & m (bits - 1)) 5;
223			ptr++ = char (u >> (bits - 2)) + '0'; u = (u & m (bits - 2)) 5;
224			ptr++ = char (u >> (bits - 3)) + '0'; u = (u & m (bits - 3)) 5;
225			ptr++ = char (u >> (bits - 4)) + '0'; u = (u & m (bits - 4)) 5;
226			ptr++ = char (u >> (bits - 5)) + '0'; u = (u & m (bits - 5)) 5;
227			ptr++ = char (u >> (bits - 6)) + '0'; u = (u & m (bits - 6)) 5;
228			ptr++ = char (u >> (bits - 7)) + '0'; u = (u & m (bits - 7)) 5;
229			*ptr++ = char (u >> (bits - 8)) + '0';
230	root	1.1	}
231			else
232	root	1.4	{
233	root	1.11	// do not output leading zeroes (except if v == 0)
234			// good compilers will compile this into completely branchless code
235			char digit, nz = 0;
236
237			digit = (u >> (bits - 0)); ptr = digit + '0'; nz \|= digit; ptr += nz ? 1 : 0; u = (u & m (bits - 0)) 5;
238			digit = (u >> (bits - 1)); ptr = digit + '0'; nz \|= digit; ptr += nz ? 1 : 0; u = (u & m (bits - 1)) 5;
239			digit = (u >> (bits - 2)); ptr = digit + '0'; nz \|= digit; ptr += nz ? 1 : 0; u = (u & m (bits - 2)) 5;
240			digit = (u >> (bits - 3)); ptr = digit + '0'; nz \|= digit; ptr += nz ? 1 : 0; u = (u & m (bits - 3)) 5;
241			digit = (u >> (bits - 4)); ptr = digit + '0'; nz \|= digit; ptr += nz ? 1 : 0; u = (u & m (bits - 4)) 5;
242			digit = (u >> (bits - 5)); ptr = digit + '0'; nz \|= digit; ptr += nz ? 1 : 0; u = (u & m (bits - 5)) 5;
243			digit = (u >> (bits - 6)); ptr = digit + '0'; nz \|= digit; ptr += nz ? 1 : 0; u = (u & m (bits - 6)) 5;
244			digit = (u >> (bits - 7)); ptr = digit + '0'; nz \|= digit; ptr += nz ? 1 : 0; u = (u & m (bits - 7)) 5;
245			digit = (u >> (bits - 8)); *ptr = digit + '0'; nz \|= digit; ptr += 1;
246	root	1.4	}
247	root	1.1
248	root	1.11	return ptr;
249			}
250
251			void
252			dynbuf_text::add (sint32 i)
253			{
254	root	1.14	force (sint32_digits);
255	root	1.11
256			*ptr = '-'; ptr += i < 0 ? 1 : 0;
257			uint32 u = i < 0 ? -i : i;
258
259			if (expect_true (u < 10)) // we have a lot of single-digit numbers, so optimise
260			fadd (char (u + '0'));
261			else if (expect_true (u < 1000000000)) // 9 0's
262			ptr = i2a_9 (ptr, u, false);
263			else
264	root	1.1	{
265	root	1.11	sint32 div = u / 1000000000;
266			uint32 rem = u % 1000000000;
267	root	1.5
268	root	1.11	ptr = i2a_9 (ptr, div, false);
269			ptr = i2a_9 (ptr, rem, true);
270	root	1.1	}
271			}
272
273	root	1.5	void
274	root	1.7	dynbuf_text::add (sint64 i)
275	root	1.1	{
276	root	1.14	force (sint64_digits);
277	root	1.11
278			*ptr = '-'; ptr += i < 0 ? 1 : 0;
279			uint64 u = i < 0 ? -i : i;
280
281			// split the number into a 1-digit part
282			// (#19) and two 9 digit parts (9..18 and 0..8)
283	root	1.4
284	root	1.11	// good compilers will only use multiplications here
285	root	1.2
286	root	1.11	if (u < 10) // we have a lot of single-digit numbers, so optimise
287			fadd (char (u + '0'));
288			else if (expect_true (u < 1000000000)) // 9 0's
289			ptr = i2a_9 (ptr, u, false);
290			else if (expect_true (u < UINT64_C (1000000000000000000))) // 18 0's
291	root	1.1	{
292	root	1.11	sint32 div = u / 1000000000;
293			uint32 rem = u % 1000000000;
294
295			ptr = i2a_9 (ptr, div, false);
296			ptr = i2a_9 (ptr, rem, true);
297	root	1.1	}
298	root	1.2	else
299	root	1.1	{
300	root	1.11	// a biggy
301			sint32 div = u / UINT64_C (1000000000000000000);
302			uint64 rem = u % UINT64_C (1000000000000000000);
303
304			fadd (char (div + '0'));
305			u = rem;
306
307			{
308			sint32 div = u / 1000000000;
309			uint32 rem = u % 1000000000;
310
311			ptr = i2a_9 (ptr, div, true);
312			ptr = i2a_9 (ptr, rem, true);
313			}
314	root	1.1	}
315	root	1.11	}
316	root	1.1
317	root	1.25	dynbuf_text::operator char *()
318	root	1.17	{
319			*this << '\0';
320			linearise ();
321			--ptr;
322			return first->data;
323			}
324
325			void
326			dynbuf_text::add_abilities (const char *name, uint32 abilities)
327			{
328			if (!abilities)
329			return;
330
331			*this << '(' << name;
332
333			const char *sep = ": ";
334	root	1.29	for_all_bits_sparse_32 (abilities, i)
335			{
336			*this << sep; sep = ", ";
337			*this << attacks [i];
338			}
339	root	1.17
340			*this << ')';
341			}
342
343			void
344			dynbuf_text::add_paths (const char *name, uint32 paths)
345			{
346			if (!paths)
347			return;
348
349			*this << '(' << name;
350
351			const char *sep = ": ";
352			for (int i = 0; i < NRSPELLPATHS; ++i)
353			if (paths & (1 << i))
354			{
355			*this << sep; sep = ", ";
356			*this << spellpathnames [i];
357			}
358
359			*this << ')';
360			}
361
362	root	1.11	#if 0
363			struct dynbuf_test_class {
364			dynbuf_test_class ()
365			{
366			sint64 s = 0;
367			for (int i = 0; i < 10000000; ++i)
368			{
369			char b1[256], b2[256];
370
371			dynbuf_text db;
372			db.add (s);
373			db.add (char (0));
374
375			db.linearise (b1);
376			sprintf (b2, "%ld", s);
377
378			if (strcmp (b1, b2))
379			printf ("<%s,%s>\n", b1, b2);
380
381			if (i < 20)
382			s = (sint64) pow (10., i);
383			else
384			s = (sint64) exp (random () * (43.6682723752766 / RAND_MAX));
385			}
386
387			exit (0);
388			}
389			} dynbuf_test;
390			#endif
391	root	1.17