commonTest.space.kscience.kmath.operations.BigIntOperationsTest.kt Maven / Gradle / Ivy
package space.kscience.kmath.operations
import kotlin.test.Test
import kotlin.test.assertEquals
@kotlin.ExperimentalUnsignedTypes
class BigIntOperationsTest {
@Test
fun testPlus_1_1() {
val x = 1.toBigInt()
val y = 1.toBigInt()
val res = x + y
val sum = 2.toBigInt()
assertEquals(sum, res)
}
@Test
fun testPlusBigNumbers() {
val x = 0x7fffffff.toBigInt()
val y = 0x7fffffff.toBigInt()
val z = 0x7fffffff.toBigInt()
val res = x + y + z
val sum = uintArrayOf(0x7ffffffdU, 0x1U).toBigInt(1)
assertEquals(sum, res)
}
@Test
fun testUnaryMinus() {
val x = 1234.toBigInt()
val y = (-1234).toBigInt()
assertEquals(-x, y)
}
@Test
fun testMinus_2_1() {
val x = 2.toBigInt()
val y = 1.toBigInt()
val res = x - y
val sum = 1.toBigInt()
assertEquals(sum, res)
}
@Test
fun testMinus__2_1() {
val x = (-2).toBigInt()
val y = 1.toBigInt()
val res = x - y
val sum = (-3).toBigInt()
assertEquals(sum, res)
}
@Test
fun testMinus___2_1() {
val x = (-2).toBigInt()
val y = 1.toBigInt()
val res = -x - y
val sum = 1.toBigInt()
assertEquals(sum, res)
}
@Test
fun testMinusBigNumbers() {
val x = 12345.toBigInt()
val y = 0xffffffffaL.toBigInt()
val res = x - y
val sum = (-0xfffffcfc1L).toBigInt()
assertEquals(sum, res)
}
@Test
fun testMultiply_2_3() {
val x = 2.toBigInt()
val y = 3.toBigInt()
val res = x * y
val prod = 6.toBigInt()
assertEquals(prod, res)
}
@Test
fun testMultiply__2_3() {
val x = (-2).toBigInt()
val y = 3.toBigInt()
val res = x * y
val prod = (-6).toBigInt()
assertEquals(prod, res)
}
@Test
fun testMultiply_0xfff123_0xfff456() {
val x = 0xfff123.toBigInt()
val y = 0xfff456.toBigInt()
val res = x * y
val prod = 0xffe579ad5dc2L.toBigInt()
assertEquals(prod, res)
}
@Test
fun testMultiplyUInt_0xfff123_0xfff456() {
val x = 0xfff123.toBigInt()
val y = 0xfff456U
val res = x * y
val prod = 0xffe579ad5dc2L.toBigInt()
assertEquals(prod, res)
}
@Test
fun testMultiplyInt_0xfff123__0xfff456() {
val x = 0xfff123.toBigInt()
val y = -0xfff456
val res = x * y
val prod = (-0xffe579ad5dc2L).toBigInt()
assertEquals(prod, res)
}
@Test
fun testMultiply_0xffffffff_0xffffffff() {
val x = 0xffffffffL.toBigInt()
val y = 0xffffffffL.toBigInt()
val res = x * y
val prod = 0xfffffffe00000001UL.toBigInt()
assertEquals(prod, res)
}
@Test
fun test_shr_20() {
val x = 20.toBigInt()
assertEquals(10.toBigInt(), x shr 1)
}
@Test
fun test_shl_20() {
val x = 20.toBigInt()
assertEquals(40.toBigInt(), x shl 1)
}
@Test
fun test_shl_1_0() {
assertEquals(
BigInt.ONE,
BigInt.ONE shl 0
)
}
@Test
fun test_shl_1_32() {
assertEquals(
0x100000000UL.toBigInt(),
BigInt.ONE shl 32
)
}
@Test
fun test_shl_1_33() {
assertEquals(
0x200000000UL.toBigInt(),
BigInt.ONE shl 33
)
}
@Test
fun test_shr_1_33_33() {
assertEquals(
BigInt.ONE,
(BigInt.ONE shl 33) shr 33
)
}
@Test
fun test_shr_1_32() {
assertEquals(
BigInt.ZERO,
BigInt.ONE shr 32
)
}
@Test
fun test_and_123_456() {
val x = 123.toBigInt()
val y = 456.toBigInt()
assertEquals(72.toBigInt(), x and y)
}
@Test
fun test_or_123_456() {
val x = 123.toBigInt()
val y = 456.toBigInt()
assertEquals(507.toBigInt(), x or y)
}
@Test
fun test_asd() {
assertEquals(
BigInt.ONE,
BigInt.ZERO or ((20.toBigInt() shr 4) and BigInt.ONE)
)
}
@Test
fun test_square_0x11223344U_0xad2ffffdU_0x17eU() {
val num =
uintArrayOf(0x11223344U, 0xad2ffffdU, 0x17eU).toBigInt(-1)
println(num)
val res = num * num
assertEquals(
res,
uintArrayOf(0xb0542a10U, 0xbbd85bc8U, 0x2a1fa515U, 0x5069e03bU, 0x23c09U).toBigInt(1)
)
}
@Test
fun testDivision_6_3() {
val x = 6.toBigInt()
val y = 3U
val res = x / y
val div = 2.toBigInt()
assertEquals(div, res)
}
@Test
fun testBigDivision_6_3() {
val x = 6.toBigInt()
val y = 3.toBigInt()
val res = x / y
val div = 2.toBigInt()
assertEquals(div, res)
}
@Test
fun testDivision_20__3() {
val x = 20.toBigInt()
val y = -3
val res = x / y
val div = (-6).toBigInt()
assertEquals(div, res)
}
@Test
fun testBigDivision_20__3() {
val x = 20.toBigInt()
val y = (-3).toBigInt()
val res = x / y
val div = (-6).toBigInt()
assertEquals(div, res)
}
@Test
fun testDivision_0xfffffffe00000001_0xffffffff() {
val x = 0xfffffffe00000001UL.toBigInt()
val y = 0xffffffffU
val res = x / y
val div = 0xffffffffL.toBigInt()
assertEquals(div, res)
}
@Test
fun testBigDivision_0xfffffffeabcdef01UL_0xfffffffeabc() {
val res = 0xfffffffeabcdef01UL.toBigInt() / 0xfffffffeabc.toBigInt()
assertEquals(res, 0x100000.toBigInt())
}
@Test
fun testBigDivision_0xfffffffe00000001_0xffffffff() {
val x = 0xfffffffe00000001UL.toBigInt()
val y = 0xffffffffU.toBigInt()
val res = x / y
val div = 0xffffffffL.toBigInt()
assertEquals(div, res)
}
@Test
fun testMod_20_3() {
val x = 20.toBigInt()
val y = 3
val res = x % y
val mod = 2
assertEquals(mod, res)
}
@Test
fun testBigMod_20_3() {
val x = 20.toBigInt()
val y = 3.toBigInt()
val res = x % y
val mod = 2.toBigInt()
assertEquals(mod, res)
}
@Test
fun testMod_0xfffffffe00000001_12345() {
val x = 0xfffffffe00000001UL.toBigInt()
val y = 12345
val res = x % y
val mod = 1980
assertEquals(mod, res)
}
@Test
fun testBigMod_0xfffffffe00000001_12345() {
val x = 0xfffffffe00000001UL.toBigInt()
val y = 12345.toBigInt()
val res = x % y
val mod = 1980.toBigInt()
assertEquals(mod, res)
}
@Test
fun testModPow_3_10_17() {
val x = 3.toBigInt()
val exp = 10.toBigInt()
val mod = 17.toBigInt()
val res = 8.toBigInt()
return assertEquals(res, x.modPow(exp, mod))
}
@Test
fun testModPowBigNumbers() {
val x = 0xfffffffeabcdef01UL.toBigInt()
val exp = 2.toBigInt()
val mod = 0xfffffffeabcUL.toBigInt()
val res = 0xc2253cde01.toBigInt()
return assertEquals(res, x.modPow(exp, mod))
}
@Test
fun testModBigNumbers() {
val x = 0xfffffffeabcdef01UL.toBigInt()
val mod = 0xfffffffeabcUL.toBigInt()
val res = 0xdef01.toBigInt()
return assertEquals(res, x % mod)
}
}
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