## Expand description

*Function that is not part of the language but is offered as a helper for tests, etc.*
Set bit at position `i`

in `x`

to `b`

if `c`

is all 1 and return the restult.
Returns `x`

if `c`

is `0`

.

*Function that is not part of the language but is offered as a helper for tests, etc.*
Set bit at position `i`

in `x`

to `b`

if `c`

is all 1 and return the restult.
Returns `x`

if `c`

is `0`

.