Zig 0.17.0-dev (Split by item)

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addcarryxU64

The function addcarryxU64 is an addition with carry.

Postconditions: out1 = (arg1 + arg2 + arg3) mod 2^64 out2 = ⌊(arg1 + arg2 + arg3) / 2^64⌋

Input Bounds: arg1: [0x0 ~> 0x1] arg2: [0x0 ~> 0xffffffffffffffff] arg3: [0x0 ~> 0xffffffffffffffff] Output Bounds: out1: [0x0 ~> 0xffffffffffffffff] out2: [0x0 ~> 0x1]

p256_scalar_64.addcarryxU64

fn addcarryxU64(out1: *u64, out2: *u1, arg1: u1, arg2: u64, arg3: u64) void

File

lib/std/crypto/pcurves/p256/p256_scalar_64.zig:75

Code

fn addcarryxU64(out1: *u64, out2: *u1, arg1: u1, arg2: u64, arg3: u64) void {
    const x = @as(u128, arg2) +% arg3 +% arg1;
    out1.* = @truncate(x);
    out2.* = @truncate(x >> 64);
}