Function bitfrob::u64_with_region
source · pub const fn u64_with_region(
low: u32,
high: u32,
old: u64,
replacement: u64
) -> u64
Expand description
Replaces the low
to high
bit region of old
.
The low
and high
values form an inclusive bit range.
Bits in replacement
outside of the region have no effect.
Panics
low
andhigh
can’t exceed the number of bits in the type.low
must be less thanhigh
.
assert_eq!(u64_with_region(0, 2, 0b11111111_u64, 0), 0b1111_1000_u64);
assert_eq!(u64_with_region(1, 3, 0b11111111_u64, 0), 0b1111_0001_u64);
assert_eq!(u64_with_region(4, 7, 0b11111111_u64, 0), 0b0000_1111_u64);