genericopenlibs/liboil/tsrc/examples/oil-random/src/oil-random.c
changeset 18 47c74d1534e1
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/genericopenlibs/liboil/tsrc/examples/oil-random/src/oil-random.c	Fri Apr 16 16:46:38 2010 +0300
@@ -0,0 +1,140 @@
+/*
+* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: 
+*
+*/
+
+
+
+
+#include <liboil/liboil.h>
+#include <liboil/liboildebug.h>
+#include <time.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <liboil/globals.h>
+
+#define LOG_FILE "c:\\logs\\examples_oil-random_log.txt"
+#include "std_log_result.h"
+#define LOG_FILENAME_LINE __FILE__, __LINE__
+
+void create_xml(int result)
+{
+    if(result)
+        assert_failed = 1;
+    
+    testResultXml("examples_oil-random");
+    close_log_file();
+}
+typedef struct _OilRandomState OilRandomState;
+
+struct _OilRandomState {
+  int index;
+  uint32_t mt[624];
+  uint32_t bits[624];
+};
+
+OilRandomState state;
+
+static void _oil_random_init (void);
+uint32_t oil_random_get_int (OilRandomState *state);
+void oil_random_get_bits (OilRandomState *state, uint8_t *dest, int n);
+
+int main (int argc, char *argv[])
+{
+  int i;
+  uint32_t a[10];
+
+  oil_init();
+
+  _oil_random_init();
+
+  for(i=0;i<10;i++){
+  std_log(LOG_FILENAME_LINE,"%d\n", oil_random_get_int(&state));
+  }
+
+  oil_random_get_bits (&state, (void *)a, 10*4);
+  for(i=0;i<10;i++){
+  std_log(LOG_FILENAME_LINE,"%d\n", a[i]);
+  }
+    if(assert_failed)
+          std_log(LOG_FILENAME_LINE,"Test Fail");
+    else
+          std_log(LOG_FILENAME_LINE,"Test Successful");
+    create_xml(0);
+
+}
+
+
+void
+oil_random_state_seed (OilRandomState *state, uint32_t seed)
+{
+  uint32_t *mt = state->mt;
+  int i;
+
+  mt[0] = seed;
+  for(i=1;i<624;i++) {
+    mt[i] = (1812433253UL * (mt[i-1] ^ (mt[i-1] >> 30)) + i);
+  }
+  oil_mt19937 (state->bits, state->mt);
+  state->index = 0;
+}
+
+
+
+static void
+_oil_random_init (void)
+{
+  int seed;
+
+  seed = time(NULL);
+  OIL_ERROR("seed is %d", seed);
+
+  oil_random_state_seed (&state, seed);
+}
+
+uint32_t
+oil_random_get_int (OilRandomState *state)
+{
+  if (state->index >= 624) {
+    oil_mt19937 (state->bits, state->mt);
+    state->index = 0;
+  }
+  return state->bits[state->index++];
+}
+
+void
+oil_random_get_bits (OilRandomState *state, uint8_t *dest, int n)
+{
+  int i = state->index * 4;
+  int m;
+
+  while(n > 0) {
+    if (i >= 624*4) {
+      oil_mt19937 (state->bits, state->mt);
+      i = 0;
+    }
+
+    m = n;
+    if (m > 624*4 - i) m = 624*4 - i;
+
+    memcpy (dest, ((uint8_t *)state->bits) + i, m);
+    i += m;
+    n -= m;
+  }
+  state->index = (i+3)/4;
+}
+
+