bigint_arithmetic

Multiplying numbers larger than what's possible with a normal 64 bit processor.

• Baseline: Add 1 + 1
• Fact50: Take the factorial of 50. (Gets up to 256 bits)
• Fact95: Take the factorial of 95. (Gets up to 512 bits)

Note: We cannot include GMP or unstable crates. GMP can't be included because it is not crossplatform (not available in Windows).

	baseline	fact50	fact95
num_bigint	0.114	9.864	28.497
numext_fixed_uint	0.008	70.474	423.588
uint	0.016	116.127	902.055

Speed units are in microseconds per iteration. Less is better.

Related Functions

• bigint_parsestr

Crate versions

num-bigint = "0.2.2"        # Big integer implementation for Rust
numext-fixed-uint = "0.1.2"     # Fixed-size uint types.
uint = "0.5.0"                     # Large fixed-size integers arithmetics

Compiled on: rustc 1.31.1 (b6c32da9b 2018-12-18)