"""Make unit test for addmul128() in multiply_32.c"""


from common import counter, make_main, split64


def make_test(a):

    # Turn a[] and the result into arrays of 64-bit words
    result = split64(a**2)
    a = split64(a)

    # Computation does not depend on zero terms
    result_len = 2 * len(a)

    # Pad the output vector with as many padding zeroes as needed
    for x in range(result_len - len(result)):
        result.append("0")

    # Fill output buffer with values that must be overwritten
    t = [ "0xCCCCCCCCCCCCCCCCULL" ] * result_len

    print("")
    print("void test_%d(void) {" % next(counter))
    print("    const uint64_t a[] = {" + ", ".join(a) + "};")
    print("    uint64_t t[] = {" + ", ".join(t) + ", 0xAAAAAAAAAAAAAAAAULL};")
    print("    uint64_t scratchpad[%d];" %  (3*len(a)))
    print("    const uint64_t expected_t[] = {" + ", ".join(result) + "};")
    print("")
    print("    square(t, scratchpad, a, %d);" % len(a))
    print("    assert(memcmp(t, expected_t, 8*%d) == 0);" % result_len)
    #print '    printf("t[{0}]=0x%016lX\\n", t[{0}]);'.format(result_len)
    print("    assert(t[%d] == 0xAAAAAAAAAAAAAAAAULL);" % result_len)
    print("}")
    print("")


print("#include <assert.h>")
print("#include <string.h>")
print("#include <stdint.h>")
print("#include <stdio.h>")
print('#include "multiply.h"')

make_test(0)
make_test(0xFF)
make_test(2738)
make_test(82738748374923632473)
make_test(0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)

make_main()
