# `sltu`

[RISC-V Documentation](https://asm-editor.specy.app/documentation/risc-v.md) › [Instructions](https://asm-editor.specy.app/documentation/risc-v/instruction.md)

Web page: https://asm-editor.specy.app/documentation/risc-v/instruction/sltu

**Set if less than unsigned**

Category: Comparison

Sets the first register to 1 if the second is less than the third as unsigned integers, otherwise to 0.

[RISC-V manual: sltu](https://docs.riscv.org/reference/isa/v20260120/unpriv/rv32.html#norm:slt_sltu_op)

## Forms

- `sltu t1, t2, t3`

## Operands

- `t1`: Any integer register, `x0` to `x31`, or its named alias, such as `zero`, `t0` or `t6`.
- `t2`: An integer register. It may be the same register as `t1`.
- `t3`: An integer register. It may be the same register as `t1`.

## Example

```riscv
.text
li t0, -1
li t1, 1
# t0=0xFFFFFFFF is unsigned-greater than t1=1; sltu writes 0 to t2.
sltu t2, t0, t1
```