sfmt19937.h

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00001 
00033 #ifndef SFMT19937_H
00034 #define SFMT19937_H
00035 
00036 #include <stdio.h>
00037 
00038 #if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
00039   #include <inttypes.h>
00040   #define INLINE inline
00041 #elif defined(_MSC_VER)
00042   typedef unsigned int uint32_t;
00043   typedef unsigned long long uint64_t;
00044   #define INLINE
00045 #else
00046   #include <inttypes.h>
00047   #if defined(__GNUC__)
00048     #define INLINE __inline__
00049   #endif
00050 #endif
00051 
00052 #ifndef PRIu64
00053   #if defined(_MSC_VER)
00054     #define PRIu64 "I64u"
00055     #define PRIx64 "I64x"
00056   #else
00057     #define PRIu64 "llu"
00058     #define PRIx64 "llx"
00059   #endif
00060 #endif
00061 
00062 INLINE uint32_t gen_rand32(void);
00063 INLINE uint64_t gen_rand64(void);
00064 INLINE void fill_array32(uint32_t array[], int size);
00065 INLINE void fill_array64(uint64_t array[], int size);
00066 void init_gen_rand(uint32_t seed);
00067 void init_by_array(uint32_t init_key[], int key_length);
00068 
00069 /* These real versions are due to Isaku Wada */
00070 /* generates a random number on [0,1]-real-interval */
00071 INLINE static double genrand_real1(void)
00072 {
00073     return gen_rand32()*(1.0/4294967295.0); 
00074     /* divided by 2^32-1 */ 
00075 }
00076 
00077 /* generates a random number on [0,1)-real-interval */
00078 INLINE static double genrand_real2(void)
00079 {
00080     return gen_rand32()*(1.0/4294967296.0); 
00081     /* divided by 2^32 */
00082 }
00083 
00084 /* generates a random number on (0,1)-real-interval */
00085 INLINE static double genrand_real3(void)
00086 {
00087     return (((double)gen_rand32()) + 0.5)*(1.0/4294967296.0); 
00088     /* divided by 2^32 */
00089 }
00090 /* These real versions are due to Isaku Wada */
00091 
00092 /* generates a random number on [0,1) with 53-bit resolution*/
00093 INLINE static double genrand_res53(void) 
00094 { 
00095     return gen_rand64()*(1.0/18446744073709551616.0L);
00096 } 
00097 #endif

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