vl_rand.h

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#ifndef VL_RAND_H
#define VL_RAND_H
 
#include "vl_numtypes.h"
#include "vl_memory.h"
 
#ifndef VL_H_RANDOM_SPLIT
#define VL_H_RANDOM_SPLIT(randPtr, resultPtr) (*((vl_ularge_t*)(resultPtr)) = vlRandNext(randPtr))
#endif
 
typedef vl_ularge_t vl_rand;
 
vl_rand     vlRandInit();
 
vl_rand     vlRandNext(vl_rand* rand);
 
void vlRandFill(vl_rand* rand, void* mem, vl_ularge_t len);
 
#ifdef VL_U8_T
#define vlRandUInt8(randPtr)    (vl_uint8_t)   (vlRandNext(randPtr))
 
#ifdef VL_U64_T
#define vlRandUInt8x8(randPtr, resultPtr) VL_H_RANDOM_SPLIT(randPtr, resultPtr)
#elif defined VL_U32_T
#define vlRandUInt8x8(randPtr, resultPtr)   VL_H_RANDOM_SPLIT(randPtr, resultPtr); \
                                            VL_H_RANDOM_SPLIT(randPtr, ((VL_U8_T*)(resultPtr)) + 4)
#endif
#endif
 
#ifdef VL_U16_T
#define vlRandUInt16(randPtr)   (vl_uint16_t)  (vlRandNext(randPtr))
 
#ifdef VL_U64_T
#define vlRandUInt16x4(randPtr, resultPtr) VL_H_RANDOM_SPLIT(randPtr, resultPtr)
#elif defined VL_U32_T
#define vlRandUInt16x4(randPtr, resultPtr)  VL_H_RANDOM_SPLIT(randPtr, resultPtr); \
                                            VL_H_RANDOM_SPLIT(randPtr, ((VL_U16_T*)(resultPtr)) + 2)
#endif
#endif
 
#ifdef VL_U32_T
#define vlRandUInt32(randPtr)   (vl_uint32_t)  (vlRandNext(randPtr))
 
#ifdef VL_U64_T
#define vlRandUInt32x2(randPtr, resultPtr) VL_H_RANDOM_SPLIT(randPtr, resultPtr)
#else
#define vlRandUInt32x2(randPtr, resultPtr)  VL_H_RANDOM_SPLIT(randPtr, resultPtr); \
                                            VL_H_RANDOM_SPLIT(randPtr, ((VL_U32_T*)(resultPtr) + 1))
#endif
#endif
 
#ifdef VL_U64_T
 
#define vlRandUInt64(randPtr)   (vl_uint64_t)  (vlRandNext(randPtr))
#endif
 
#ifdef VL_I8_T
vl_int8_t      vlRandInt8      (vl_rand* rand);
 
#ifdef VL_U64_T
#define vlRandInt8x8(randPtr, resultPtr)     VL_H_RANDOM_SPLIT(randPtr, resultPtr)
#elif defined VL_U32_T
#define vlRandInt8x8(randPtr, resultPtr)    VL_H_RANDOM_SPLIT(randPtr, resultPtr); \
                                            VL_H_RANDOM_SPLIT(randPtr, ((VL_I8_T*)(resultPtr) + 4)
#endif
#endif
 
#ifdef VL_I16_T
vl_int16_t     vlRandInt16     (vl_rand* rand);
 
#ifdef VL_U64_T
#define vlRandInt16x4(randPtr, resultPtr)    VL_H_RANDOM_SPLIT(randPtr, resultPtr)
#elif defined VL_U32_T
 
#define vlRandInt16x4(randPtr, resultPtr)   VL_H_RANDOM_SPLIT(randPtr, resultPtr);\
                                            VL_H_RANDOM_SPLIT(randPtr, (VL_I16_T)(resultPtr) + 2)
#endif
#endif
 
#ifdef VL_I32_T
vl_int32_t     vlRandInt32     (vl_rand* rand);
 
#ifdef VL_I64_T
#define vlRandInt32x2(randPtr, resultPtr)    VL_H_RANDOM_SPLIT(randPtr, resultPtr)
#elif defined VL_I32_T
#define vlRandInt32x2(randPtr, resultPtr)  VL_H_RANDOM_SPLIT(randPtr, resultPtr);\
                                           VL_H_RANDOM_SPLIT(randPtr, ((VL_I32_T*)(resultPtr)) + 1)
#endif
#endif
 
#ifdef VL_I64_T
vl_int64_t     vlRandInt64     (vl_rand* rand);
#endif
 
vl_float32_t  vlRandF       (vl_rand* randPtr);
 
void          vlRandFx2     (vl_rand* randPtr, vl_float32_t* resultPtr);
 
#define vlRandFx4(randPtr, resultPtr)   vlRandFx2(randPtr, (vl_float32_t*)(resultPtr));\
                                        vlRandFx2(randPtr, ((vl_float32_t*)(resultPtr)) + 2)
 
vl_float64_t  vlRandD    (vl_rand* randPtr);
 
#endif //VL_RAND_H