div infinite loop

[chfast@…]

Dividing two values of fixed 256-bit unchecked unsigned integer type can never finish.

Type:

using u256 =  boost::multiprecision::number<boost::multiprecision::cpp_int_backend<256, 256, boost::multiprecision::unsigned_magnitude, boost::multiprecision::unchecked, void>>;

Values:

u256 a{"0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFBA"};
u256 b{"0x1DAE6076B981DAE6076B981DAE6076B981DAE6076B981DAE6076B981DAE6077"};

Full test: ​https://gist.github.com/chfast/9136896f1ee1d214b7a6

[chfast@…]

test case

[John Maddock]

Thanks for the test case. Now fixed in ​https://github.com/boostorg/multiprecision/commit/a1eafc4228d90dca05f180cd5db183c58c90721a.

[anonymous]

Has that been released in 1.61?

[anonymous]

Yes.