Function fiat_crypto::curve25519_32::fiat_25519_subborrowx_u25
source · pub fn fiat_25519_subborrowx_u25(
out1: &mut u32,
out2: &mut fiat_25519_u1,
arg1: fiat_25519_u1,
arg2: u32,
arg3: u32
)
Expand description
The function fiat_25519_subborrowx_u25 is a subtraction with borrow.
Postconditions: out1 = (-arg1 + arg2 + -arg3) mod 2^25 out2 = -⌊(-arg1 + arg2 + -arg3) / 2^25⌋
Input Bounds: arg1: [0x0 ~> 0x1] arg2: [0x0 ~> 0x1ffffff] arg3: [0x0 ~> 0x1ffffff] Output Bounds: out1: [0x0 ~> 0x1ffffff] out2: [0x0 ~> 0x1]