The function setOne returns the field element one in the Montgomery domain.
Postconditions: eval (from_montgomery out1) mod m = 1 mod m 0 ≤ eval out1 < m
pub fn setOne(out1: *MontgomeryDomainFieldElement) void
pub fn setOne(out1: *MontgomeryDomainFieldElement) void {
@setRuntimeSafety(mode == .debug);
out1[0] = 0xffffffff00000001;
out1[1] = 0xffffffff;
out1[2] = 0x1;
out1[3] = 0x0;
out1[4] = 0x0;
out1[5] = 0x0;
}