extra files

common/sfmt/SFMT.h

@@ -0,0 +1,164 @@
+/** 
+ * @file SFMT.h 
+ *
+ * @brief SIMD oriented Fast Mersenne Twister(SFMT) pseudorandom
+ * number generator
+ *
+ * @author Mutsuo Saito (Hiroshima University)
+ * @author Makoto Matsumoto (Hiroshima University)
+ *
+ * Copyright (C) 2006, 2007 Mutsuo Saito, Makoto Matsumoto and Hiroshima
+ * University. All rights reserved.
+ *
+ * The new BSD License is applied to this software.
+ * see LICENSE.txt
+ *
+ * @note We assume that your system has inttypes.h.  If your system
+ * doesn't have inttypes.h, you have to typedef uint32_t and uint64_t,
+ * and you have to define PRIu64 and PRIx64 in this file as follows:
+ * @verbatim
+ typedef unsigned int uint32_t
+ typedef unsigned long long uint64_t  
+ #define PRIu64 "llu"
+ #define PRIx64 "llx"
+@endverbatim
+ * uint32_t must be exactly 32-bit unsigned integer type (no more, no
+ * less), and uint64_t must be exactly 64-bit unsigned integer type.
+ * PRIu64 and PRIx64 are used for printf function to print 64-bit
+ * unsigned int and 64-bit unsigned int in hexadecimal format.
+ */
+
+#ifndef SFMT_H
+#define SFMT_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdio.h>
+
+#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
+  #include <inttypes.h>
+#elif defined(_MSC_VER) || defined(__BORLANDC__)
+  typedef unsigned int uint32_t;
+  typedef unsigned __int64 uint64_t;
+  #define inline __inline
+#else
+  #include <inttypes.h>
+  #if defined(__GNUC__)
+    #define inline __inline__
+  #endif
+#endif
+
+#ifndef PRIu64
+  #if defined(_MSC_VER) || defined(__BORLANDC__)
+    #define PRIu64 "I64u"
+    #define PRIx64 "I64x"
+  #else
+    #define PRIu64 "llu"
+    #define PRIx64 "llx"
+  #endif
+#endif
+
+#if defined(__GNUC__)
+#define ALWAYSINLINE __attribute__((always_inline))
+#else
+#define ALWAYSINLINE
+#endif
+
+#if defined(_MSC_VER)
+  #if _MSC_VER >= 1200
+    #define PRE_ALWAYS __forceinline
+  #else
+    #define PRE_ALWAYS inline
+  #endif
+#else
+  #define PRE_ALWAYS inline
+#endif
+
+uint32_t gen_rand32(void);
+uint64_t gen_rand64(void);
+void fill_array32(uint32_t *array, int size);
+void fill_array64(uint64_t *array, int size);
+void init_gen_rand(uint32_t seed);
+void init_by_array(uint32_t *init_key, int key_length);
+const char *get_idstring(void);
+int get_min_array_size32(void);
+int get_min_array_size64(void);
+
+/* These real versions are due to Isaku Wada */
+/** generates a random number on [0,1]-real-interval */
+inline static double to_real1(uint32_t v)
+{
+    return v * (1.0/4294967295.0); 
+    /* divided by 2^32-1 */ 
+}
+
+/** generates a random number on [0,1]-real-interval */
+inline static double genrand_real1(void)
+{
+    return to_real1(gen_rand32());
+}
+
+/** generates a random number on [0,1)-real-interval */
+inline static double to_real2(uint32_t v)
+{
+    return v * (1.0/4294967296.0); 
+    /* divided by 2^32 */
+}
+
+/** generates a random number on [0,1)-real-interval */
+inline static double genrand_real2(void)
+{
+    return to_real2(gen_rand32());
+}
+
+/** generates a random number on (0,1)-real-interval */
+inline static double to_real3(uint32_t v)
+{
+    return (((double)v) + 0.5)*(1.0/4294967296.0); 
+    /* divided by 2^32 */
+}
+
+/** generates a random number on (0,1)-real-interval */
+inline static double genrand_real3(void)
+{
+    return to_real3(gen_rand32());
+}
+/** These real versions are due to Isaku Wada */
+
+/** generates a random number on [0,1) with 53-bit resolution*/
+inline static double to_res53(uint64_t v) 
+{ 
+    return v * (1.0/18446744073709551616.0L);
+}
+
+/** generates a random number on [0,1) with 53-bit resolution from two
+ * 32 bit integers */
+inline static double to_res53_mix(uint32_t x, uint32_t y) 
+{ 
+    return to_res53(x | ((uint64_t)y << 32));
+}
+
+/** generates a random number on [0,1) with 53-bit resolution
+ */
+inline static double genrand_res53(void) 
+{ 
+    return to_res53(gen_rand64());
+} 
+
+/** generates a random number on [0,1) with 53-bit resolution
+    using 32bit integer.
+ */
+inline static double genrand_res53_mix(void) 
+{ 
+    uint32_t x, y;
+
+    x = gen_rand32();
+    y = gen_rand32();
+    return to_res53_mix(x, y);
+} 
+#ifdef __cplusplus
+}
+#endif
+#endif