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Tests for Karatsuba and Toom-Cook 3-way #280

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May 21, 2019
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Tests for Karatsuba and Toom-Cook 3-way #280

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137 changes: 136 additions & 1 deletion demo/test.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1883,6 +1883,137 @@ static int test_s_mp_balance_mul(void)
return EXIT_FAILURE;
}

#define s_mp_mul(a, b, c) s_mp_mul_digs(a, b, c, (a)->used + (b)->used + 1)
static int test_s_mp_karatsuba_mul(void)
{
mp_int a, b, c, d;
int size, err;

if ((err = mp_init_multi(&a, &b, &c, &d, NULL)) != MP_OKAY) {
goto LTM_ERR;
}
for (size = MP_KARATSUBA_MUL_CUTOFF; size < MP_KARATSUBA_MUL_CUTOFF + 20; size++) {
if ((err = mp_rand(&a, size)) != MP_OKAY) {
goto LTM_ERR;
}
if ((err = mp_rand(&b, size)) != MP_OKAY) {
goto LTM_ERR;
}
if ((err = s_mp_karatsuba_mul(&a, &b, &c)) != MP_OKAY) {
goto LTM_ERR;
}
if ((err = s_mp_mul(&a,&b,&d)) != MP_OKAY) {
goto LTM_ERR;
}
if (mp_cmp(&c, &d) != MP_EQ) {
fprintf(stderr, "Karatsuba multiplication failed at size %d\n", size);
goto LTM_ERR;
}
}

mp_clear_multi(&a, &b, &c, &d, NULL);
return EXIT_SUCCESS;
LTM_ERR:
mp_clear_multi(&a, &b, &c, &d, NULL);
return EXIT_FAILURE;
}

static int test_s_mp_karatsuba_sqr(void)
{
mp_int a, b, c;
int size, err;

if ((err = mp_init_multi(&a, &b, &c, NULL)) != MP_OKAY) {
goto LTM_ERR;
}
for (size = MP_KARATSUBA_SQR_CUTOFF; size < MP_KARATSUBA_SQR_CUTOFF + 20; size++) {
if ((err = mp_rand(&a, size)) != MP_OKAY) {
goto LTM_ERR;
}
if ((err = s_mp_karatsuba_sqr(&a, &b)) != MP_OKAY) {
goto LTM_ERR;
}
if ((err = s_mp_sqr(&a, &c)) != MP_OKAY) {
goto LTM_ERR;
}
if (mp_cmp(&b, &c) != MP_EQ) {
fprintf(stderr, "Karatsuba squaring failed at size %d\n", size);
goto LTM_ERR;
}
}

mp_clear_multi(&a, &b, &c, NULL);
return EXIT_SUCCESS;
LTM_ERR:
mp_clear_multi(&a, &b, &c, NULL);
return EXIT_FAILURE;
}

static int test_s_mp_toom_mul(void)
{
mp_int a, b, c, d;
int size, err;

if ((err = mp_init_multi(&a, &b, &c, &d, NULL)) != MP_OKAY) {
goto LTM_ERR;
}
for (size = MP_TOOM_MUL_CUTOFF; size < MP_TOOM_MUL_CUTOFF + 20; size++) {
if ((err = mp_rand(&a, size)) != MP_OKAY) {
goto LTM_ERR;
}
if ((err = mp_rand(&b, size)) != MP_OKAY) {
goto LTM_ERR;
}
if ((err = s_mp_toom_mul(&a, &b, &c)) != MP_OKAY) {
goto LTM_ERR;
}
if ((err = s_mp_mul(&a,&b,&d)) != MP_OKAY) {
goto LTM_ERR;
}
if (mp_cmp(&c, &d) != MP_EQ) {
fprintf(stderr, "Toom-Cook 3-way multiplication failed at size %d\n", size);
goto LTM_ERR;
}
}

mp_clear_multi(&a, &b, &c, &d, NULL);
return EXIT_SUCCESS;
LTM_ERR:
mp_clear_multi(&a, &b, &c, &d, NULL);
return EXIT_FAILURE;
}

static int test_s_mp_toom_sqr(void)
{
mp_int a, b, c;
int size, err;

if ((err = mp_init_multi(&a, &b, &c, NULL)) != MP_OKAY) {
goto LTM_ERR;
}
for (size = MP_TOOM_SQR_CUTOFF; size < MP_TOOM_SQR_CUTOFF + 20; size++) {
if ((err = mp_rand(&a, size)) != MP_OKAY) {
goto LTM_ERR;
}
if ((err = s_mp_toom_sqr(&a, &b)) != MP_OKAY) {
goto LTM_ERR;
}
if ((err = s_mp_sqr(&a, &c)) != MP_OKAY) {
goto LTM_ERR;
}
if (mp_cmp(&b, &c) != MP_EQ) {
fprintf(stderr, "Toom-Cook 3-way squaring failed at size %d\n", size);
goto LTM_ERR;
}
}

mp_clear_multi(&a, &b, &c, NULL);
return EXIT_SUCCESS;
LTM_ERR:
mp_clear_multi(&a, &b, &c, NULL);
return EXIT_FAILURE;
}

int unit_tests(int argc, char **argv)
{
static const struct {
Expand Down Expand Up @@ -1921,7 +2052,11 @@ int unit_tests(int argc, char **argv)
T(mp_tc_or),
T(mp_tc_xor),
T(s_mp_balance_mul),
T(s_mp_jacobi)
T(s_mp_jacobi),
T(s_mp_karatsuba_mul),
T(s_mp_karatsuba_sqr),
T(s_mp_toom_mul),
T(s_mp_toom_sqr)
#undef T
};
unsigned long i;
Expand Down