impossible_mips.c

extern int rand(void);

typedef long int32_t;
typedef unsigned long uint32_t;
typedef int32_t mad_fixed64hi_t;
typedef uint32_t mad_fixed64lo_t;
typedef int32_t mad_fixed_t;

int main()
{
    int requantized = rand();
    int D = rand();
    int C = rand();
    int output = ({
        register mad_fixed64hi_t __hi;
        register mad_fixed64lo_t __lo;
        asm ("mult  %2,%3" : "=l" (__lo), "=h" (__hi) : "%r" ((requantized + D)), "r" ((C)));
        ((mad_fixed_t) (((__hi) << (32 - 28)) | ((__lo) >> 28))); 
    });
    return 0;
}