Subversion Repositories hf-risc

#include <hf-risc.h>

union big{

        struct{

                uint32_t high;

                uint32_t low;

        } l;

        uint64_t unum;

        int64_t num;

};

int main(){

        int32_t i, j;

        uint64_t a, b;

        int64_t c, d;

        union big stuff;

        printf("test unsigned multiply...\n");

        a = 0x89abcdef;

        b = 3;

        for (i = 0; i < 20; i++){

                stuff.unum = a * b;

                printf("%x * %x = %x%x\n", (uint32_t)a, (uint32_t)b, stuff.l.high, stuff.l.low);

                b *= 3;

        }

        printf("test unsigned divide...\n");

        a = stuff.unum;

        for (i = 0; i < 20; i++){

                stuff.unum = a / b;

                printf("%x%x / %x%x = %x%x\n", (uint32_t)(a >> 32), (uint32_t)(a & 0xffffffff), (uint32_t)(b >> 32), (uint32_t)(b & 0xffffffff), stuff.l.high, stuff.l.low);

                b /= 3;

        }

        printf("test signed multiply...\n");

        c = 0x89abcdef;

        d = -3;

        for (i = 0; i < 20; i++){

                stuff.num = c * d;

                printf("%x * %x = %x%x\n", (uint32_t)c, (uint32_t)d, stuff.l.high, stuff.l.low);

                d *= 3;

        }

        printf("test signed divide...\n");

        c = stuff.num | 1LL << 63;

        for (i = 0; i < 20; i++){

                stuff.unum = c / d;

                printf("%x%x / %x%x = %x%x\n", (uint32_t)(c >> 32), (uint32_t)(c & 0xffffffff), (uint32_t)(d >> 32), (uint32_t)(d & 0xffffffff), stuff.l.high, stuff.l.low);

                d /= 3;

        }

        stuff.unum = 1;

        printf("testing left shifts..\n");

        for (i = 0; i < 64; i++){

                printf("%x %x\n", stuff.l.high, stuff.l.low);

                stuff.unum <<= 1;

        }

        stuff.unum = 1LL << 63;

        printf("testing right (logical) shifts..\n");

        for (i = 0; i < 64; i++){

                printf("%x %x\n", stuff.l.high, stuff.l.low);

                stuff.unum >>= 1;

        }

        stuff.unum = 1LL << 63;

        printf("testing right (arithmetic) shifts..\n");

        for (i = 0; i < 64; i++){

                printf("%x %x\n", stuff.l.high, stuff.l.low);

                stuff.num >>= 1;

        }

        return 0;

}