SFMT.h

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00001 
00031 #ifndef SFMT_H
00032 #define SFMT_H
00033 
00034 #include <stdio.h>
00035 
00036 #if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
00037   #include <inttypes.h>
00038 #elif defined(_MSC_VER)
00039   typedef unsigned int uint32_t;
00040   typedef unsigned long long uint64_t;
00041   #define inline
00042 #else
00043   #include <inttypes.h>
00044   #if defined(__GNUC__)
00045     #define inline __inline__
00046   #endif
00047 #endif
00048 
00049 #ifndef PRIu64
00050   #if defined(_MSC_VER)
00051     #define PRIu64 "I64u"
00052     #define PRIx64 "I64x"
00053   #else
00054     #define PRIu64 "llu"
00055     #define PRIx64 "llx"
00056   #endif
00057 #endif
00058 
00059 inline uint32_t gen_rand32(void);
00060 inline uint64_t gen_rand64(void);
00061 inline void fill_array32(uint32_t array[], int size);
00062 inline void fill_array64(uint64_t array[], int size);
00063 void init_gen_rand(uint32_t seed);
00064 void init_by_array(uint32_t init_key[], int key_length);
00065 char *get_idstring(void);
00066 int get_min_array_size32(void);
00067 int get_min_array_size64(void);
00068 
00069 /* These real versions are due to Isaku Wada */
00071 inline static double to_real1(uint32_t v)
00072 {
00073     return v * (1.0/4294967295.0); 
00074     /* divided by 2^32-1 */ 
00075 }
00076 
00078 inline static double genrand_real1(void)
00079 {
00080     return to_real1(gen_rand32());
00081 }
00082 
00084 inline static double to_real2(uint32_t v)
00085 {
00086     return v * (1.0/4294967296.0); 
00087     /* divided by 2^32 */
00088 }
00089 
00091 inline static double genrand_real2(void)
00092 {
00093     return to_real2(gen_rand32());
00094 }
00095 
00097 inline static double to_real3(uint32_t v)
00098 {
00099     return (((double)v) + 0.5)*(1.0/4294967296.0); 
00100     /* divided by 2^32 */
00101 }
00102 
00104 inline static double genrand_real3(void)
00105 {
00106     return to_real3(gen_rand32());
00107 }
00111 inline static double to_res53(uint64_t v) 
00112 { 
00113     return v * (1.0/18446744073709551616.0L);
00114 }
00115 
00117 inline static double genrand_res53(void) 
00118 { 
00119     return to_res53(gen_rand64());
00120 } 
00121 #endif

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