Revision 3f163c3adde9ad2c85d99eb3bcc2a49290e2d769 authored by KristofferC on 27 September 2023, 14:02:24 UTC, committed by KristofferC on 29 September 2023, 09:12:04 UTC
1 parent b6a748f
gmp.jl
# This file is a part of Julia. License is MIT: https://julialang.org/license
using Random, Serialization
a = parse(BigInt,"123456789012345678901234567890")
b = parse(BigInt,"123456789012345678901234567891")
c = parse(BigInt,"246913578024691357802469135780")
d = parse(BigInt,"-246913578024691357802469135780")
ee = typemax(Int64)
@testset "basics" begin
@test BigInt <: Signed
@test big(1) isa Signed
if sizeof(Culong) >= 8
@test_throws OutOfMemoryError big(96608869069402268615522366320733234710)^16374500563449903721
@test_throws OutOfMemoryError 555555555555555555555555555555555555555555555555555^55555555555555555
end
let x = big(1)
@test signed(x) === x
@test convert(Signed, x) === x
@test Signed(x) === x
@test_throws MethodError convert(Unsigned, x) # could change in the future
end
@test a+BigInt(1) == b
@test typeof(a+1) == BigInt
@test a+1 == b
@test isequal(a+1, b)
@test b == a+1
@test !(b == a)
@test b > a
@test b >= a
@test !(b < a)
@test !(b <= a)
@test typeof(a * 2) == BigInt
@test a*2 == c
@test c-a == a
@test c == a + a
@test c+1 == a+b
@test typeof(d) == BigInt
@test d == -c
@test typeof(BigInt(ee)) == BigInt
@test BigInt(ee)+1 == parse(BigInt,"9223372036854775808")
@testset "printing" begin
#Multiple calls for sanity check, since we're doing direct memory manipulation
@test string(a) == "123456789012345678901234567890"
@test string(b) == "123456789012345678901234567891"
@test string(c) == "246913578024691357802469135780"
@test string(d) == "-246913578024691357802469135780"
@test string(a) == "123456789012345678901234567890"
end
@testset "constructors" begin
@test typeof(BigInt(typemax(Int8))) == BigInt
@test typeof(BigInt(typemax(Int16))) == BigInt
@test typeof(BigInt(typemax(Int32))) == BigInt
@test typeof(BigInt(typemax(Int64))) == BigInt
@test typeof(BigInt(typemax(Int128))) == BigInt
@test typeof(BigInt(true)) == BigInt
@test typeof(BigInt(typemax(UInt8))) == BigInt
@test typeof(BigInt(typemax(UInt16))) == BigInt
@test typeof(BigInt(typemax(UInt32))) == BigInt
@test typeof(BigInt(typemax(UInt64))) == BigInt
@test typeof(BigInt(typemax(UInt128))) == BigInt
@test typeof(BigInt(BigInt(1))) == BigInt
for x in (Int16(0), 1, 3//4, big(5//6), big(9))
@test big(typeof(x)) == typeof(big(x))
@test big(typeof(complex(x, x))) == typeof(big(complex(x, x)))
end
end
@testset "division" begin
oz = big(1 // 0)
zo = big(0 // 1)
@test_throws DivideError() oz / oz
@test oz == oz / one(oz)
@test -oz == oz / (-one(oz))
@test zero(oz) == one(oz) / oz
@test_throws DivideError() zo / zo
@test one(zo) / zo == big(1//0)
@test -one(zo) / zo == big(-1//0)
end
end
@testset "div, fld, mod, rem" begin
for i = -10:10, j = [-10:-1; 1:10]
@test div(BigInt(i), BigInt(j)) == div(i,j)
@test fld(BigInt(i), BigInt(j)) == fld(i,j)
@test mod(BigInt(i), BigInt(j)) == mod(i,j)
@test rem(BigInt(i), BigInt(j)) == rem(i,j)
end
end
@testset "copysign / sign" begin
x = BigInt(1)
y = BigInt(-1)
@test copysign(x, y) == y
@test copysign(y, x) == x
@test sign(BigInt(-3)) == -1
@test sign(BigInt( 0)) == 0
@test sign(BigInt( 3)) == 1
end
@testset "Signed addition" begin
@test a+Int8(1) == b
@test a+Int16(1) == b
@test a+Int32(1) == b
@test a+Int64(1) == b
@test a+Int128(1) == b
@test Int8(1)+ a == b
@test Int16(1)+a == b
@test Int32(1)+a == b
@test Int64(1)+a == b
@test b+Int8(-1) == a
@test b+Int16(-1) == a
@test b+Int32(-1) == a
@test b+Int64(-1) == a
@test Int8(-1)+ b == a
@test Int16(-1)+b == a
@test Int32(-1)+b == a
@test Int64(-1)+b == a
end
@testset "Unsigned addition" begin
@test a+true == b
@test a+UInt8(1) == b
@test a+UInt16(1) == b
@test a+UInt32(1) == b
@test a+UInt64(1) == b
@test a+UInt128(1) == b
@test true+a == b
@test UInt8(1)+ a == b
@test UInt16(1)+a == b
@test UInt32(1)+a == b
@test UInt64(1)+a == b
end
@testset "Signed subtraction" begin
@test b-Int8(1) == a
@test b-Int16(1) == a
@test b-Int32(1) == a
@test b-Int64(1) == a
@test Int8(1)- b == -a
@test Int16(1)-b == -a
@test Int32(1)-b == -a
@test Int64(1)-b == -a
@test a-Int8(-1) == b
@test a-Int16(-1) == b
@test a-Int32(-1) == b
@test a-Int64(-1) == b
@test Int8(-1)- a == -b
@test Int16(-1)-a == -b
@test Int32(-1)-a == -b
@test Int64(-1)-a == -b
end
@testset "Unsigned subtraction" begin
@test b-true == a
@test b-UInt8(1) == a
@test b-UInt16(1) == a
@test b-UInt32(1) == a
@test b-UInt64(1) == a
@test true-b == -a
@test UInt8(1)- b == -a
@test UInt16(1)-b == -a
@test UInt32(1)-b == -a
@test UInt64(1)-b == -a
end
@testset "Signed multiplication" begin
@test a*Int8(1) == a
@test a*Int16(1) == a
@test a*Int32(1) == a
@test a*Int64(1) == a
@test Int8(1)* a == a
@test Int16(1)*a == a
@test Int32(1)*a == a
@test Int64(1)*a == a
@test a*Int8(-1) == -a
@test a*Int16(-1) == -a
@test a*Int32(-1) == -a
@test a*Int64(-1) == -a
@test Int8(-1)* a == -a
@test Int16(-1)*a == -a
@test Int32(-1)*a == -a
@test Int64(-1)*a == -a
end
@testset "Unsigned multiplication" begin
@test a*true == a
@test a*UInt8(1) == a
@test a*UInt16(1) == a
@test a*UInt32(1) == a
@test a*UInt64(1) == a
@test true*a == a
@test UInt8(1)* a == a
@test UInt16(1)*a == a
@test UInt32(1)*a == a
@test UInt64(1)*a == a
end
@testset "bitshifts" begin
@test BigInt(5) << 3 == 40
@test BigInt(5) >> 1 == 2
@test BigInt(-5) << 3 == -40
@test BigInt(-5) >> 1 == -3
@test BigInt(5) >> -3 == 40
@test BigInt(5) << -1 == 2
@test BigInt(-5) >> -3 == -40
@test BigInt(-5) << -1 == -3
end
@testset "boolean ops" begin
@test ~BigInt(123) == -124
@test BigInt(123) & BigInt(234) == 106
@test BigInt(123) | BigInt(234) == 251
@test BigInt(123) ⊻ BigInt(234) == 145
@test gcd(BigInt(48), BigInt(180)) == 12
@test lcm(BigInt(48), BigInt(180)) == 720
end
@testset "combinatorics" begin
@test factorial(BigInt(40)) == parse(BigInt,"815915283247897734345611269596115894272000000000")
@test binomial(BigInt(1), -1) == BigInt(0)
@test binomial(BigInt(1), 2) == BigInt(0)
@test binomial(BigInt(-53), 42) == parse(BigInt,"959509335087854414441273718")
@test binomial(BigInt(113), BigInt(42)) == parse(BigInt,"18672199984318438125634054194360")
end
let a, b
a = rand(1:100, 10000)
b = map(BigInt, a)
@test sum(a) == sum(b)
@test 0 == sum(BigInt[]) isa BigInt
@test prod(b) == foldl(*, b)
@test 1 == prod(BigInt[]) isa BigInt
@test prod(BigInt[0, 0, 0]) == 0 # issue #46665
end
@testset "Iterated arithmetic" begin
local a, b, c, d, f, g
a = parse(BigInt,"315135")
b = parse(BigInt,"12412")
c = parse(BigInt,"3426495623485904783478347")
d = parse(BigInt,"-1398984130")
f = parse(BigInt,"2413804710837418037418307081437315263635345357386985747464")
g = parse(BigInt,"-1")
@test +(a, b) == parse(BigInt,"327547")
@test 327547 == sum((a, b)) isa BigInt
@test +(a, b, c) == parse(BigInt,"3426495623485904783805894")
@test 3426495623485904783805894 == sum((a, b, c)) isa BigInt
@test +(a, b, c, d) == parse(BigInt,"3426495623485903384821764")
@test 3426495623485903384821764 == sum((a, b, c, d)) isa BigInt
@test +(a, b, c, d, f) == parse(BigInt,"2413804710837418037418307081437318690130968843290370569228")
@test 2413804710837418037418307081437318690130968843290370569228 == sum((a, b, c, d, f)) isa BigInt
@test +(a, b, c, d, f, g) == parse(BigInt,"2413804710837418037418307081437318690130968843290370569227")
@test 2413804710837418037418307081437318690130968843290370569227 == sum((a, b, c, d, f, g)) isa BigInt
@test *(a, b) == parse(BigInt,"3911455620")
@test *(a, b, c) == parse(BigInt,"13402585563389346256121263521460140")
@test *(a, b, c, d) == parse(BigInt,"-18750004504148804423388563022070650287578200")
@test *(a, b, c, d, f) == parse(BigInt,"-45258849200337190631492857400003938881995610529251881450243326128168934937055005474972396281351684800")
@test *(a, b, c, d, f, g) == parse(BigInt,"45258849200337190631492857400003938881995610529251881450243326128168934937055005474972396281351684800")
@test xor(a, b) == parse(BigInt,"327299")
@test xor(a, b, c) == parse(BigInt,"3426495623485904783798472")
@test xor(a, b, c, d) == parse(BigInt,"-3426495623485906178489610")
@test xor(a, b, c, d, f) == parse(BigInt,"-2413804710837418037418307081437316711364709261074607933698")
@test xor(a, b, c, d, f, g) == parse(BigInt,"2413804710837418037418307081437316711364709261074607933697")
@test nand(a, b) == parse(BigInt,"-125")
@test ⊼(a, b) == parse(BigInt,"-125")
@test nor(a, b) == parse(BigInt,"-327424")
@test ⊽(a, b) == parse(BigInt,"-327424")
@test (&)(a, b) == parse(BigInt,"124")
@test (&)(a, b, c) == parse(BigInt,"72")
@test (&)(a, b, c, d) == parse(BigInt,"8")
@test (&)(a, b, c, d, f) == parse(BigInt,"8")
@test (&)(a, b, c, d, f, g) == parse(BigInt,"8")
@test (|)(a, b) == parse(BigInt,"327423")
@test (|)(a, b, c) == parse(BigInt,"3426495623485904783802111")
@test (|)(a, b, c, d) == parse(BigInt,"-1396834561")
@test (|)(a, b, c, d, f) == parse(BigInt,"-1358954753")
@test (|)(a, b, c, d, f, g) == parse(BigInt,"-1")
end
@testset "bit operations" begin
for x in (315135, 12412, 3426495623485904783478347)
@test trailing_ones(big(x)) == trailing_ones(x)
@test trailing_zeros(big(x)) == trailing_zeros(x)
@test count_ones(big(x)) == count_ones(x)
@test count_zeros(-big(x)) == count_zeros(-x)
end
@test_throws DomainError trailing_zeros(big(0))
@test_throws DomainError trailing_ones(big(-1)) # -1 is all ones
@test_throws DomainError count_zeros(big(0))
@test_throws DomainError count_zeros(big(rand(UInt)))
@test_throws DomainError count_ones(big(-1))
@test_throws DomainError count_ones(-big(rand(UInt))-1)
end
# Large Fibonacci to exercise BigInt
# from Bill Hart, https://groups.google.com/group/julia-dev/browse_frm/thread/798e2d1322daf633
function mul(a::Vector{BigInt}, b::Vector{BigInt})
x = a[2]*b[2]
c = Vector{BigInt}(undef, 3)
c[1] = a[1]*b[1] + x
c[2] = a[1]*b[2] + a[2]*b[3]
c[3] = x + a[3]*b[3]
return c
end
function bigfib(n)
n == 0 && return BigInt(0)
n -= 1
r = [BigInt(1), BigInt(1), BigInt(0)]
s = [BigInt(1), BigInt(0), BigInt(1)]
while true
(n & 1) == 1 && (s = mul(s,r))
(n >>= 1) == 0 && return s[1]
r = mul(r,r)
end
end
@test [bigfib(n) for n=0:10] == [0,1,1,2,3,5,8,13,21,34,55]
let s, n = bigfib(1000001)
@test ndigits(n) == 208988
@test mod(n,big(10)^15) == 359244926937501
@test div(n,big(10)^208973) == 316047687386689
s = string(n)
@test length(s) == 208988
@test endswith(s, "359244926937501")
@test startswith(s, "316047687386689")
end
@testset "digits" begin
n = Int64(2080310129088201558)
N = big(n)
for base in (2,7,10,11,16,30,50,62,64,100,128), pad in (0,1,10,100)
@test digits(n; base, pad) == digits(N; base, pad) == digits(UInt8, N; base, pad)
@test digits(-n; base, pad) == digits(-N; base, pad)
@test digits!(Vector{Int}(undef, pad), n; base) == digits!(Vector{Int}(undef, pad), N; base)
end
@test digits(UInt8, n; base=1<<8) == digits(UInt8, N; base=1<<8)
@test digits(UInt16, n; base=1<<16) == digits(UInt16, N; base=1<<16)
end
# serialization (#5133)
let n = parse(BigInt, "359334085968622831041960188598043661065388726959079837"),
b = IOBuffer()
serialize(b, n)
seek(b, 0)
@test deserialize(b) == n
end
@testset "issue #5873" begin
@test ndigits(big(90)) == 2
@test ndigits(big(99)) == 2
ndigits_mismatch(n) = ndigits(n) != ndigits(BigInt(n))
@test !any(ndigits_mismatch, 8:9)
@test !any(ndigits_mismatch, 64:99)
@test !any(ndigits_mismatch, 512:999)
@test !any(ndigits_mismatch, 8192:9999)
end
# The following should not crash (#16579)
ndigits(big(rand(Int)), base=rand(63:typemax(Int)))
ndigits(big(rand(Int)), base=big(2)^rand(2:999))
for x in big.([-20:20; rand(Int)])
for _base in -1:1
@test_throws DomainError ndigits(x, base=_base)
end
end
@test Base.ndigits0zpb(big(0), big(rand(2:100))) == 0
# digits with BigInt bases (#16844)
@test digits(big(2)^256, base = big(2)^128) == [0, 0, 1]
@testset "conversion from float" begin
@test BigInt(2.0) == BigInt(2.0f0) == BigInt(big(2.0)) == 2
@test_throws InexactError convert(BigInt, 2.1)
@test_throws InexactError convert(BigInt, big(2.1))
end
@testset "truncation" begin
# cf. issue #13367
for T = (Float16, Float32, Float64)
@test trunc(BigInt, T(2.1)) == 2
@test unsafe_trunc(BigInt, T(2.1)) == 2
@test round(BigInt, T(2.1)) == 2
@test floor(BigInt, T(2.1)) == 2
@test ceil(BigInt, T(2.1)) == 3
@test_throws InexactError trunc(BigInt, T(Inf))
@test_throws InexactError round(BigInt, T(Inf))
@test_throws InexactError floor(BigInt, T(Inf))
@test_throws InexactError ceil(BigInt, T(Inf))
end
end
@testset "string(::BigInt)" begin
# cf. issue #18849"
# bin, oct, dec, hex should not call sizeof on BigInts
# when padding is desired
padding = 4
low = big(4)
high = big(2^20)
@test string(low, pad = padding, base = 2) == "0100"
@test string(low, pad = padding, base = 8) == "0004"
@test string(low, pad = padding, base = 10) == "0004"
@test string(low, pad = padding, base = 16) == "0004"
@test string(high, pad = padding, base = 2) == "100000000000000000000"
@test string(high, pad = padding, base = 8) == "4000000"
@test string(high, pad = padding, base = 10) == "1048576"
@test string(high, pad = padding, base = 16) == "100000"
@test string(-low, pad = padding, base = 2) == "-0100" # handle negative numbers correctly
@test string(-low, pad = padding, base = 8) == "-0004"
@test string(-low, pad = padding, base = 10) == "-0004"
@test string(-low, pad = padding, base = 16) == "-0004"
@test string(-high, pad = padding, base = 2) == "-100000000000000000000"
@test string(-high, pad = padding, base = 8) == "-4000000"
@test string(-high, pad = padding, base = 10) == "-1048576"
@test string(-high, pad = padding, base = 16) == "-100000"
# cf. issue #13367
@test string(big(3), base = 2) == "11"
@test string(big(9), base = 8) == "11"
@test string(-big(9), base = 8) == "-11"
@test string(big(12), base = 16) == "c"
# respect 0-padding on big(0)
for base in (2, 8, 10, 16)
@test string(big(0), base=base, pad=0) == ""
end
@test string(big(0), base = rand(2:62), pad = 0) == ""
end
@test isqrt(big(4)) == 2
@test isqrt(big(5)) == 2
@testset "Exponentiation operator" begin
@test big(5)^true == big(5)
@test big(5)^false == one(BigInt)
testvals = Int8[-128:-126; -3:3; 125:127]
@testset "BigInt and Int8 are consistent: $i^$j" for i in testvals, j in testvals
int8_res = try
i^j
catch e
e
end
if int8_res isa Int8
@test (big(i)^big(j)) % Int8 === int8_res
else
# Test both have exception of the same type
@test_throws typeof(int8_res) big(i)^big(j)
end
end
end
@testset "math ops returning BigFloat" begin
# operations that when applied to Int64 give Float64, should give BigFloat
@test typeof(exp(a)) == BigFloat
@test typeof(exp2(a)) == BigFloat
@test typeof(exp10(a)) == BigFloat
@test typeof(expm1(a)) == BigFloat
@test typeof(cosh(a)) == BigFloat
@test typeof(sinh(a)) == BigFloat
@test typeof(tanh(a)) == BigFloat
@test typeof(sech(a)) == BigFloat
@test typeof(csch(a)) == BigFloat
@test typeof(coth(a)) == BigFloat
@test typeof(cbrt(a)) == BigFloat
@test typeof(tan(a)) == BigFloat
@test typeof(cos(a)) == BigFloat
@test typeof(sin(a)) == BigFloat
end
# Issue #24298
@test mod(BigInt(6), UInt(5)) == mod(6, 5)
@test iseven(zero(BigInt))
@test isodd(BigInt(typemax(UInt)))
@testset "cmp has values in [-1, 0, 1], issue #28780" begin
# _rand produces values whose log2 is better distributed than rand
_rand(::Type{BigInt}, n=1000) = let x = big(2)^rand(1:rand(1:n))
rand(-x:x)
end
_rand(F::Type{<:AbstractFloat}) = F(_rand(BigInt, round(Int, log2(floatmax(F))))) + rand(F)
_rand(T) = rand(T)
for T in (Base.BitInteger_types..., BigInt, Float64, Float32, Float16)
@test cmp(big(2)^130, one(T)) === 1
@test cmp(-big(2)^130, one(T)) === -1
c = cmp(_rand(BigInt), _rand(T))
@test c ∈ (-1, 0, 1)
@test c isa Int
(T <: Integer && T !== BigInt) || continue
x = rand(T)
@test cmp(big(2)^130, x) === cmp(x, -big(2)^130) === 1
@test cmp(-big(2)^130, x) === cmp(x, big(2)^130) === -1
@test cmp(big(x), x) === cmp(x, big(x)) === 0
end
c = cmp(_rand(BigInt), _rand(BigInt))
@test c ∈ (-1, 0, 1)
@test c isa Int
end
@testset "generic conversion from Integer" begin
x = rand(Int128)
@test BigInt(x) % Int128 === x
y = rand(UInt128)
@test BigInt(y) % UInt128 === y
end
@testset "conversion from typemin(T)" begin
@test big(Int8(-128)) == big"-128"
@test big(Int16(-32768)) == big"-32768"
@test big(Int32(-2147483648)) == big"-2147483648"
@test big(Int64(-9223372036854775808)) == big"-9223372036854775808"
@test big(Int128(-170141183460469231731687303715884105728)) == big"-170141183460469231731687303715884105728"
end
@testset "type conversion with Signed, Unsigned" begin
x = BigInt(typemin(Int128)) - 1
@test x % Signed === x
@test_throws MethodError x % Unsigned
y = BigInt(1)
@test y % Signed === y
@test_throws MethodError y % Unsigned
end
@testset "conversion to Float" begin
x = big"2"^256 + big"2"^(256-53) + 1
@test Float64(x) == reinterpret(Float64, 0x4ff0000000000001)
@test Float64(-x) == -Float64(x)
x = (x >> 1) + 1
@test Float64(x) == reinterpret(Float64, 0x4fe0000000000001)
@test Float64(-x) == -Float64(x)
x = big"2"^64 + big"2"^(64-24) + 1
@test Float32(x) == reinterpret(Float32, 0x5f800001)
@test Float32(-x) == -Float32(x)
x = (x >> 1) + 1
@test Float32(x) == reinterpret(Float32, 0x5f000001)
@test Float32(-x) == -Float32(x)
x = big"2"^15 + big"2"^(15-11) + 1
@test Float16(x) == reinterpret(Float16, 0x7801)
@test Float16(-x) == -Float16(x)
x = (x >> 1) + 1
@test Float16(x) == reinterpret(Float16, 0x7401)
@test Float16(-x) == -Float16(x)
for T in (Float16, Float32, Float64)
n = exponent(floatmax(T))
@test T(big"2"^(n+1)) === T(Inf)
@test T(big"2"^(n+1) - big"2"^(n-precision(T))) === T(Inf)
@test T(big"2"^(n+1) - big"2"^(n-precision(T)) - 1) === floatmax(T)
end
end
a = Rational{BigInt}(12345678901234567890123456789, 987654321987654320)
b = Rational{BigInt}(12345678902222222212111111109, 987654321987654320)
c = Rational{BigInt}(24691357802469135780246913578, 987654321987654320)
d = Rational{BigInt}(- 12345678901234567890123456789, 493827160993827160)
e = Rational{BigInt}(12345678901234567890123456789, 12345678902222222212111111109)
@testset "big rational basics" begin
@test a+BigInt(1) == b
@test typeof(a+1) == Rational{BigInt}
@test a+1 == b
@test isequal(a+1, b)
@test b == a+1
@test !(b == a)
@test b > a
@test b >= a
@test !(b < a)
@test !(b <= a)
@test typeof(a * 2) == Rational{BigInt}
@test a*2 == c
@test c-a == a
@test c == a + a
@test c+1 == a+b
@test typeof(d) == Rational{BigInt}
@test d == -c
@test e == a // b
@testset "gmp cmp" begin
@test Base.GMP.MPQ.cmp(b, a) == 1
@test Base.GMP.MPQ.cmp(a, b) == -1
@test Base.GMP.MPQ.cmp(a, a) == 0
end
@testset "division errors" begin
oz = Rational{BigInt}(0, 1)
zo = Rational{BigInt}(1, 0)
@test oz + oz == 3 * oz == oz
@test oz // zo == oz
@test zo // oz == zo
@test_throws DivideError() zo - zo
@test_throws DivideError() zo + (-zo)
@test_throws DivideError() zo * oz
@test_throws DivideError() oz // oz
@test_throws DivideError() zo // zo
end
@testset "big infinities" begin
oz = Rational{BigInt}(1, 0)
zo = Rational{BigInt}(0, 1)
o = Rational{BigInt}(1, 1)
@test oz + zo == oz
@test zo - oz == -oz
@test zo + (-oz) == -oz
@test -oz + zo == -oz
@test (-oz) * (-oz) == oz
@test (-oz) * oz == -oz
@test o // zo == oz
@test (-o) // zo == -oz
@test Rational{BigInt}(-1, 0) == -1//0
@test Rational{BigInt}(1, 0) == 1//0
end
end
aa = 1//2
bb = -1//3
cc = 3//2
a = Rational{BigInt}(aa)
b = Rational{BigInt}(bb)
c = Rational{BigInt}(cc)
t = Rational{BigInt}(0, 1)
@testset "big rational inplace" begin
@test Base.GMP.MPQ.add!(t, a, b) == 1//6
@test t == 1//6
@test Base.GMP.MPQ.add!(t, t) == 1//3
@test t == 1//3
@test iszero(Base.GMP.MPQ.sub!(t, t))
@test iszero(t)
@test Base.GMP.MPQ.sub!(t, b, c) == -11//6
@test t == -11//6
@test Base.GMP.MPQ.mul!(t, a, b) == -1//6
@test t == -1//6
@test Base.GMP.MPQ.mul!(t, t) == 1//36
@test t == 1//36
@test iszero(Base.GMP.MPQ.mul!(t, Rational{BigInt}(0)))
@test Base.GMP.MPQ.div!(t, a, b) == -3//2
@test t == -3//2
@test Base.GMP.MPQ.div!(t, a) == -3//1
@test t == -3//1
@test aa == a && bb == b && cc == c
@testset "set" begin
@test Base.GMP.MPQ.set!(a, b) == b
@test a == b == bb
Base.GMP.MPQ.add!(a, b, c)
@test b == bb
@test Base.GMP.MPQ.set_z!(a, BigInt(0)) == 0
@test iszero(a)
@test Base.GMP.MPQ.set_z!(a, BigInt(3)) == 3
@test a == BigInt(3)
@test Base.GMP.MPQ.set_ui(1, 2) == 1//2
@test Base.GMP.MPQ.set_ui(0, 1) == 0//1
@test Base.GMP.MPQ.set_ui!(a, 1, 2) == 1//2
@test a == 1//2
@test Base.GMP.MPQ.set_si(1, 2) == 1//2
@test Base.GMP.MPQ.set_si(-1, 2) == -1//2
@test Base.GMP.MPQ.set_si!(a, -1, 2) == -1//2
@test a == -1//2
end
@testset "infinities" begin
oz = Rational{BigInt}(1, 0)
zo = Rational{BigInt}(0, 1)
oo = Rational{BigInt}(1, 1)
@test Base.GMP.MPQ.add!(zo, oz) == oz
@test zo == oz
zo = Rational{BigInt}(0, 1)
@test Base.GMP.MPQ.sub!(zo, oz) == -oz
@test zo == -oz
zo = Rational{BigInt}(0, 1)
@test Base.GMP.MPQ.add!(zo, -oz) == -oz
@test zo == -oz
zo = Rational{BigInt}(0, 1)
@test Base.GMP.MPQ.sub!(zo, -oz) == oz
@test zo == oz
zo = Rational{BigInt}(0, 1)
@test Base.GMP.MPQ.mul!(-oz, -oz) == oz
@test Base.GMP.MPQ.mul!(-oz, oz) == -oz
@test Base.GMP.MPQ.mul!(oz, -oz) == -1//0
@test oz == -1//0
oz = Rational{BigInt}(1, 0)
@test Base.GMP.MPQ.div!(oo, zo) == oz
@test oo == oz
oo = Rational{BigInt}(1, 1)
@test Base.GMP.MPQ.div!(-oo, zo) == -oz
end
end
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