v/vlib/math/big/array_ops_test.v

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module big
fn test_add_digit_array_01() {
a := [u32(1), 1, 1]
b := [u32(1), 1, 1]
mut c := []u32{len: 4}
add_digit_array(a, b, mut c)
assert c == [u32(2), 2, 2]
}
fn test_add_digit_array_02() {
a := [u32(1), u32(1) << 31, 1]
b := [u32(1), u32(1) << 31, 1]
mut c := []u32{len: 4}
add_digit_array(a, b, mut c)
assert c == [u32(2), 0, 3]
}
fn test_add_digit_array_03() {
a := [u32(1), (u32(1) << 31) + u32(34), 1]
b := [u32(242), u32(1) << 31, 1]
mut c := []u32{len: 4}
add_digit_array(a, b, mut c)
assert c == [u32(243), 34, 3]
}
fn test_add_digit_array_04() {
a := [u32(0)]
b := [u32(1), 3, 4]
mut c := []u32{len: 4}
add_digit_array(a, b, mut c)
assert c == [u32(1), 3, 4]
}
fn test_add_digit_array_05() {
a := [u32(1), 3, 4]
b := [u32(0)]
mut c := []u32{len: 4}
add_digit_array(a, b, mut c)
assert c == [u32(1), 3, 4]
}
fn test_add_digit_array_06() {
a := [u32(46), 13, 462, 13]
b := [u32(1), 3, 4]
mut c := []u32{len: 5}
add_digit_array(a, b, mut c)
assert c == [u32(47), 16, 466, 13]
}
fn test_subtract_digit_array_01() {
a := [u32(2), 2, 2, 2, 2]
b := [u32(1), 1, 2, 1, 1]
mut c := []u32{len: a.len}
subtract_digit_array(a, b, mut c)
assert c == [u32(1), 1, 0, 1, 1]
}
fn test_subtract_digit_array_02() {
a := [u32(0), 0, 0, 0, 1]
b := [u32(0), 0, 1]
mut c := []u32{len: a.len}
subtract_digit_array(a, b, mut c)
assert c == [u32(0), 0, u32(-1), u32(-1)]
}
fn test_subtract_digit_array_03() {
a := [u32(0), 0, 0, 0, 1, 13]
b := [u32(0), 0, 1]
mut c := []u32{len: a.len}
subtract_digit_array(a, b, mut c)
assert c == [u32(0), 0, u32(-1), u32(-1), 0, 13]
}
fn test_multiply_digit_array_01() {
a := [u32(0), 0, 0, 1]
b := [u32(0), 0, 1]
mut c := []u32{len: a.len + b.len}
multiply_digit_array(a, b, mut c)
assert c == [u32(0), 0, 0, 0, 0, 1]
}
fn test_multiply_digit_array_02() {
a := []u32{len: 0}
b := [u32(0), 0, 1]
mut c := []u32{len: a.len + b.len}
multiply_digit_array(a, b, mut c)
assert c == []
c = []u32{len: a.len + b.len}
multiply_digit_array(b, a, mut c)
assert c == []
}
fn test_compare_digit_array_01() {
a := [u32(0), 0, 2]
b := [u32(0), 0, 4]
assert compare_digit_array(a, b) < 0
assert compare_digit_array(b, a) > 0
assert compare_digit_array(a, a) == 0
assert compare_digit_array(b, b) == 0
}
fn test_compare_digit_array_02() {
a := [u32(0), 0, 2324, 0, 124]
b := [u32(0), 0, 4, 0, 0, 1]
assert compare_digit_array(a, b) < 0
assert compare_digit_array(b, a) > 0
assert compare_digit_array(a, a) == 0
assert compare_digit_array(b, b) == 0
}
fn test_divide_digit_array_01() {
a := [u32(14)]
b := [u32(2)]
mut q := []u32{cap: 1}
mut r := []u32{cap: 1}
divide_digit_array(a, b, mut q, mut r)
assert q == [u32(7)]
assert r == []u32{len: 0}
}
fn test_divide_digit_array_02() {
a := [u32(14)]
b := [u32(15)]
mut q := []u32{cap: 1}
mut r := []u32{cap: 1}
divide_digit_array(a, b, mut q, mut r)
assert q == []u32{len: 0}
assert r == a
}
fn test_divide_digit_array_03() {
a := [u32(0), 4]
b := [u32(0), 1]
mut q := []u32{cap: a.len - b.len + 1}
mut r := []u32{cap: a.len}
divide_digit_array(a, b, mut q, mut r)
assert q == [u32(4)]
assert r == []u32{len: 0}
}
fn test_divide_digit_array_04() {
a := [u32(2), 4]
b := [u32(0), 1]
mut q := []u32{cap: a.len - b.len + 1}
mut r := []u32{cap: a.len}
divide_digit_array(a, b, mut q, mut r)
assert q == [u32(4)]
assert r == [u32(2)]
}
fn test_divide_digit_array_05() {
a := [u32(3)]
b := [u32(2)]
mut q := []u32{cap: a.len - b.len + 1}
mut r := []u32{cap: a.len}
divide_digit_array(a, b, mut q, mut r)
assert q == [u32(1)]
assert r == [u32(1)]
}
fn test_left_and_right_shift() {
a := [u32(1), 1, 1]
mut r := [u32(2), 2, 2]
mut b := []u32{len: 3, init: 0}
shift_digits_left(a, 1, mut b)
assert r == b
shift_digits_right(r, 1, mut r)
assert r == a
shift_digits_left(r, 1, mut r)
assert r == b
mut c := [u32(0xffffffff)]
shift_digits_left(c, 16, mut c)
assert c == [u32(0xfffff0000), 0xffff]
shift_digits_right(c, 8, mut c)
assert c == [u32(0xfffffff00), 0xff]
shift_digits_right(c, 16, mut c)
assert c == [u32(0x00ffffff)]
shift_digits_right(c, 16, mut c)
assert c == [u32(0xff)]
shift_digits_right(c, 16, mut c)
assert c == []u32{len: 0}
}
fn test_or_digit_array() {
a := [u32(10), 10, 10]
b := [u32(5), 5, 5]
mut c := []u32{len: 3, init: 0}
bitwise_or_digit_array(a, b, mut c)
assert c == [u32(15), 15, 15]
bitwise_or_digit_array(a, a, mut c)
assert c == a
x := [u32(10), 10, 10, 42, 42]
y := [u32(2), 2, 5, 2]
mut d := []u32{len: 5, init: 0}
bitwise_or_digit_array(y, x, mut d)
assert d == [u32(10), 10, 15, 42, 42]
}