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borrowing_sub_u64

ctutils::primitives

Function borrowing_sub_u64 

Source 
pub const fn borrowing_sub_u64(
    lhs: u64,
    rhs: u64,
    borrow: Choice,
) -> (u64, Choice)
Expand description

Subtract rhs and an incoming borrow from lhs.

Returns the wrapping difference and Choice::TRUE if the subtraction underflows. The incoming borrow subtracts one when true and zero when false.