--- deliantra/server/common/utils.C	2007/02/07 02:04:46	1.47
+++ deliantra/server/common/utils.C	2007/04/27 20:06:37	1.54
@@ -44,10 +44,10 @@
 void
 tausworthe_random_generator::seed (uint32_t seed)
 {
-  state [0] = max (  2U, seed      * 69069U);
-  state [1] = max (  8U, state [0] * 69069U);
-  state [2] = max ( 16U, state [1] * 69069U);
-  state [3] = max (128U, state [2] * 69069U);
+  state [0] = seed      * 69069U; if (state [0] <  2U) state [0] +=   2U;
+  state [1] = state [0] * 69069U; if (state [0] <  8U) state [0] +=   8U;
+  state [2] = state [1] * 69069U; if (state [0] < 16U) state [0] +=  16U;
+  state [3] = state [2] * 69069U; if (state [0] < 128) state [0] += 128U;
 
   for (int i = 11; --i; )
     operator ()();
@@ -65,16 +65,16 @@
 }
 
 uint32_t
-tausworthe_random_generator::get_range (uint32_t r_max)
+tausworthe_random_generator::get_range (uint32_t num)
 {
-  return next () % r_max;
+  return (next () * (uint64_t)num) >> 32U;
 }
 
 // return a number within (min .. max)
 int 
 tausworthe_random_generator::get_range (int r_min, int r_max)
 {
-  return r_min + (*this) (max (r_max - r_min + 1, 1));
+  return r_min + get_range (max (r_max - r_min + 1, 0));
 }
 
 /*
@@ -99,7 +99,7 @@
 
   if (r_max < 1 || r_max < r_min)
     {
-      LOG (llevError, "Calling random_roll with min=%d max=%d\n", r_min, r_max);
+      LOG (llevError | logBacktrace, "Calling random_roll with min=%d max=%d\n", r_min, r_max);
       return r_min;
     }
 
@@ -132,7 +132,7 @@
 
   if (max < 1 || diff < 1)
     {
-      LOG (llevError, "Calling random_roll with min=%" PRId64 " max=%" PRId64 "\n", min, max);
+      LOG (llevError | logBacktrace, "Calling random_roll64 with min=%" PRId64 " max=%" PRId64 "\n", min, max);
       return (min);             /* avoids a float exception */
     }
 
@@ -555,6 +555,9 @@
   if (!fork ())
     {
       signal (SIGABRT, SIG_DFL);
+      // try to put corefiles into a subdirectory, if existing, to allow
+      // an administrator to reduce the I/O load.
+      chdir ("cores");
       abort ();
     }
 
@@ -611,6 +614,42 @@
     memcpy (dst, src, len + 1);
 }
 
+const std::string
+format (const char *format, ...)
+{
+  int len;
+
+  {
+    char buf[128];
+
+    va_list ap;
+    va_start (ap, format);
+    len = vsnprintf (buf, sizeof (buf), format, ap);
+    va_end (ap);
+
+    assert (len >= 0); // shield againstz broken vsnprintf's
+
+    // was our static buffer short enough?
+    if (len < sizeof (buf))
+      return std::string (buf, len);
+  }
+
+  {
+    // longer, try harder
+    char *buf = salloc<char> (len + 1);
+
+    va_list ap;
+    va_start (ap, format);
+    vsnprintf (buf, len + 1, format, ap);
+    va_end (ap);
+
+    const std::string s (buf, len);
+    sfree<char> (buf, len + 1);
+      
+    return buf;
+  }
+}
+
 tstamp now ()
 {
   struct timeval tv;
@@ -629,3 +668,61 @@
   return diff <= 1 || diff >= 7;
 }
 
+/* crc32 0xdebb20e3 table and supplementary functions.  */
+extern const uint32_t crc_32_tab[256] =
+{
+    0x00000000UL, 0x77073096UL, 0xee0e612cUL, 0x990951baUL, 0x076dc419UL,
+    0x706af48fUL, 0xe963a535UL, 0x9e6495a3UL, 0x0edb8832UL, 0x79dcb8a4UL,
+    0xe0d5e91eUL, 0x97d2d988UL, 0x09b64c2bUL, 0x7eb17cbdUL, 0xe7b82d07UL,
+    0x90bf1d91UL, 0x1db71064UL, 0x6ab020f2UL, 0xf3b97148UL, 0x84be41deUL,
+    0x1adad47dUL, 0x6ddde4ebUL, 0xf4d4b551UL, 0x83d385c7UL, 0x136c9856UL,
+    0x646ba8c0UL, 0xfd62f97aUL, 0x8a65c9ecUL, 0x14015c4fUL, 0x63066cd9UL,
+    0xfa0f3d63UL, 0x8d080df5UL, 0x3b6e20c8UL, 0x4c69105eUL, 0xd56041e4UL,
+    0xa2677172UL, 0x3c03e4d1UL, 0x4b04d447UL, 0xd20d85fdUL, 0xa50ab56bUL,
+    0x35b5a8faUL, 0x42b2986cUL, 0xdbbbc9d6UL, 0xacbcf940UL, 0x32d86ce3UL,
+    0x45df5c75UL, 0xdcd60dcfUL, 0xabd13d59UL, 0x26d930acUL, 0x51de003aUL,
+    0xc8d75180UL, 0xbfd06116UL, 0x21b4f4b5UL, 0x56b3c423UL, 0xcfba9599UL,
+    0xb8bda50fUL, 0x2802b89eUL, 0x5f058808UL, 0xc60cd9b2UL, 0xb10be924UL,
+    0x2f6f7c87UL, 0x58684c11UL, 0xc1611dabUL, 0xb6662d3dUL, 0x76dc4190UL,
+    0x01db7106UL, 0x98d220bcUL, 0xefd5102aUL, 0x71b18589UL, 0x06b6b51fUL,
+    0x9fbfe4a5UL, 0xe8b8d433UL, 0x7807c9a2UL, 0x0f00f934UL, 0x9609a88eUL,
+    0xe10e9818UL, 0x7f6a0dbbUL, 0x086d3d2dUL, 0x91646c97UL, 0xe6635c01UL,
+    0x6b6b51f4UL, 0x1c6c6162UL, 0x856530d8UL, 0xf262004eUL, 0x6c0695edUL,
+    0x1b01a57bUL, 0x8208f4c1UL, 0xf50fc457UL, 0x65b0d9c6UL, 0x12b7e950UL,
+    0x8bbeb8eaUL, 0xfcb9887cUL, 0x62dd1ddfUL, 0x15da2d49UL, 0x8cd37cf3UL,
+    0xfbd44c65UL, 0x4db26158UL, 0x3ab551ceUL, 0xa3bc0074UL, 0xd4bb30e2UL,
+    0x4adfa541UL, 0x3dd895d7UL, 0xa4d1c46dUL, 0xd3d6f4fbUL, 0x4369e96aUL,
+    0x346ed9fcUL, 0xad678846UL, 0xda60b8d0UL, 0x44042d73UL, 0x33031de5UL,
+    0xaa0a4c5fUL, 0xdd0d7cc9UL, 0x5005713cUL, 0x270241aaUL, 0xbe0b1010UL,
+    0xc90c2086UL, 0x5768b525UL, 0x206f85b3UL, 0xb966d409UL, 0xce61e49fUL,
+    0x5edef90eUL, 0x29d9c998UL, 0xb0d09822UL, 0xc7d7a8b4UL, 0x59b33d17UL,
+    0x2eb40d81UL, 0xb7bd5c3bUL, 0xc0ba6cadUL, 0xedb88320UL, 0x9abfb3b6UL,
+    0x03b6e20cUL, 0x74b1d29aUL, 0xead54739UL, 0x9dd277afUL, 0x04db2615UL,
+    0x73dc1683UL, 0xe3630b12UL, 0x94643b84UL, 0x0d6d6a3eUL, 0x7a6a5aa8UL,
+    0xe40ecf0bUL, 0x9309ff9dUL, 0x0a00ae27UL, 0x7d079eb1UL, 0xf00f9344UL,
+    0x8708a3d2UL, 0x1e01f268UL, 0x6906c2feUL, 0xf762575dUL, 0x806567cbUL,
+    0x196c3671UL, 0x6e6b06e7UL, 0xfed41b76UL, 0x89d32be0UL, 0x10da7a5aUL,
+    0x67dd4accUL, 0xf9b9df6fUL, 0x8ebeeff9UL, 0x17b7be43UL, 0x60b08ed5UL,
+    0xd6d6a3e8UL, 0xa1d1937eUL, 0x38d8c2c4UL, 0x4fdff252UL, 0xd1bb67f1UL,
+    0xa6bc5767UL, 0x3fb506ddUL, 0x48b2364bUL, 0xd80d2bdaUL, 0xaf0a1b4cUL,
+    0x36034af6UL, 0x41047a60UL, 0xdf60efc3UL, 0xa867df55UL, 0x316e8eefUL,
+    0x4669be79UL, 0xcb61b38cUL, 0xbc66831aUL, 0x256fd2a0UL, 0x5268e236UL,
+    0xcc0c7795UL, 0xbb0b4703UL, 0x220216b9UL, 0x5505262fUL, 0xc5ba3bbeUL,
+    0xb2bd0b28UL, 0x2bb45a92UL, 0x5cb36a04UL, 0xc2d7ffa7UL, 0xb5d0cf31UL,
+    0x2cd99e8bUL, 0x5bdeae1dUL, 0x9b64c2b0UL, 0xec63f226UL, 0x756aa39cUL,
+    0x026d930aUL, 0x9c0906a9UL, 0xeb0e363fUL, 0x72076785UL, 0x05005713UL,
+    0x95bf4a82UL, 0xe2b87a14UL, 0x7bb12baeUL, 0x0cb61b38UL, 0x92d28e9bUL,
+    0xe5d5be0dUL, 0x7cdcefb7UL, 0x0bdbdf21UL, 0x86d3d2d4UL, 0xf1d4e242UL,
+    0x68ddb3f8UL, 0x1fda836eUL, 0x81be16cdUL, 0xf6b9265bUL, 0x6fb077e1UL,
+    0x18b74777UL, 0x88085ae6UL, 0xff0f6a70UL, 0x66063bcaUL, 0x11010b5cUL,
+    0x8f659effUL, 0xf862ae69UL, 0x616bffd3UL, 0x166ccf45UL, 0xa00ae278UL,
+    0xd70dd2eeUL, 0x4e048354UL, 0x3903b3c2UL, 0xa7672661UL, 0xd06016f7UL,
+    0x4969474dUL, 0x3e6e77dbUL, 0xaed16a4aUL, 0xd9d65adcUL, 0x40df0b66UL,
+    0x37d83bf0UL, 0xa9bcae53UL, 0xdebb9ec5UL, 0x47b2cf7fUL, 0x30b5ffe9UL,
+    0xbdbdf21cUL, 0xcabac28aUL, 0x53b39330UL, 0x24b4a3a6UL, 0xbad03605UL,
+    0xcdd70693UL, 0x54de5729UL, 0x23d967bfUL, 0xb3667a2eUL, 0xc4614ab8UL,
+    0x5d681b02UL, 0x2a6f2b94UL, 0xb40bbe37UL, 0xc30c8ea1UL, 0x5a05df1bUL,
+    0x2d02ef8dL
+};
+
+