SGT - RISC-V instruction reference

sgtSet greater than Pseudo-instruction
Sets t1 to 1 if t2 is greater than t3 as signed integers, otherwise to 0.
RISC-V manual: slt 
Forms  sgt , ,   
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. 
 .text
li t0, 18
li t1, 5
# t0=18, t1=5; sgt writes 1 to t2.
sgt t2, t0, t1