PeerStreamer

extern const uint32_t ff_inverse[257];

#if ARCH_X86

#    define FASTDIV(a,b) \

    ({\

        int ret, dmy;\

        __asm__ volatile(\

            "mull %3"\

            :"=d"(ret), "=a"(dmy)\

            :"1"(a), "g"(ff_inverse[b])\

            );\

        ret;\

    })

#elif HAVE_ARMV6 && HAVE_INLINE_ASM

static inline av_const int FASTDIV(int a, int b)

{

    int r, t;

    __asm__ volatile("cmp     %3, #2               \n\t"

                     "ldr     %1, [%4, %3, lsl #2] \n\t"

                     "lsrle   %0, %2, #1           \n\t"

                     "smmulgt %0, %1, %2           \n\t"

                     : "=&r"(r), "=&r"(t) : "r"(a), "r"(b), "r"(ff_inverse));

    return r;

}

#elif ARCH_ARM && HAVE_INLINE_ASM

static inline av_const int FASTDIV(int a, int b)

{

    int r, t;

    __asm__ volatile("umull %1, %0, %2, %3"

                     : "=&r"(r), "=&r"(t) : "r"(a), "r"(ff_inverse[b]));

    return r;

}

#elif CONFIG_FASTDIV

#    define FASTDIV(a,b)   ((uint32_t)((((uint64_t)a) * ff_inverse[b]) >> 32))

#else

#    define FASTDIV(a,b)   ((a) / (b))

#endif