#include "tommath.h"

#define MVM_BIGINT_32_FLAG      0xFFFFFFFF

#define MVM_BIGINT_IS_BIG(body) ((body)->u.smallint.flag != 0xFFFFFFFF)

#define MVM_IS_32BIT_INT(i)     (i >= -2147483648LL && i <= 2147483647LL)

/* Representation used by big integers; inlined into P6bigint. We store any

 * values in 32-bit signed range without using the big integer library. */

struct MVMP6bigintBody {

    union {

        /* A 32-bit integer and a flag indicating this is not a pointer to a

         * big integer, but instead the 32-bit value should be read. Stored

         * so that the flag sets the lower bits of any 64-bit pointer, which

         * should never happen in a real pointer due to alignment. */

        struct {

#if defined(MVM_BIGENDIAN) && MVM_PTR_SIZE > 4

            MVMint32  value;

            MVMuint32 flag;

#else

            MVMuint32 flag;

            MVMint32  value;

#endif

        } smallint;

        /* Pointer to a libtommath big integer. */

        mp_int *bigint;

    } u;

};

struct MVMP6bigint {

    MVMObject common;

    MVMP6bigintBody body;

};

/* Function for REPR setup. */

const MVMREPROps * MVMP6bigint_initialize(MVMThreadContext *tc);