Re: Turning very larger numbers into an array of bits

Where are your big numbers coming from? If you're manipulating them at all, you probably need a multiple-precision math library. If you use Math::GMP, there's gmp_tstbit. (Math::BigInt doesn't seem to have an efficient way to fetch a particular bit.)

Comment on Re: Turning very larger numbers into an array of bits

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Re^2: Turning very larger numbers into an array of bits by syphilis (Archbishop) on Feb 05, 2017 at 06:44 UTC
If you use Math::GMP, there's gmp_tstbit Yes, I'd be using the gmp library (accessed either via Math::GMPz or Math::GMP). Math::BigInt doesn't seem to have an efficient way to fetch a particular bit Math::BigInt works with base 10 representations of numbers, which makes it less than ideal for determining values of particular bits. Cheers, Rob	[reply]