isaac.h

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#ifndef ISAAC_H
#define ISAAC_H
 
#ifdef __cplusplus
extern "C"
{
#endif
 
#define LIBISAAC_VERSION "1.0.0"
 
#include <stdint.h>
#include <stddef.h>
 
#ifndef ISAAC_BITS
    #define ISAAC_BITS 64
#endif
#if (ISAAC_BITS == 32)
typedef uint32_t isaac_uint_t;
#elif (ISAAC_BITS == 64)
typedef uint64_t isaac_uint_t;
#else
_Static_assert(0, "ISAAC: only 32 or 64 bit words are supported.");
#endif
 
#define ISAAC_ELEMENTS 256U
 
#define ISAAC_SEED_MAX_BYTES ISAAC_ELEMENTS
 
typedef struct
{
    isaac_uint_t result[ISAAC_ELEMENTS];
    isaac_uint_t mem[ISAAC_ELEMENTS];
    isaac_uint_t a;
    isaac_uint_t b;
    isaac_uint_t c;
    isaac_uint_t stream_index;
} isaac_ctx_t;
 
void isaac_init(isaac_ctx_t* ctx, const uint8_t* seed, uint16_t seed_bytes);
 
void isaac_stream(isaac_ctx_t* ctx, isaac_uint_t* ints, size_t amount);
 
void isaac_cleanup(isaac_ctx_t* ctx);
 
void isaac_to_little_endian(uint8_t* bytes,
                            const isaac_uint_t* values,
                            size_t amount_of_values);
 
void isaac_to_big_endian(uint8_t* bytes,
                         const isaac_uint_t* values,
                         size_t amount_of_values);
 
 
#ifdef __cplusplus
}
#endif
 
#endif  /* ISAAC_H */