Function core::arch::x86_64::_rdseed64_step

pub unsafe fn _rdseed64_step(val: &mut u64) -> i32

This is supported on x86-64 and target feature rdseed only.

Read a 64-bit NIST SP800-90B and SP800-90C compliant random value and store in val. Return 1 if a random value was generated, and 0 otherwise.

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