REM - RISC-V instruction reference

remRemainder 
Sets t1 to the remainder of t2 divided by t3, as signed integers.
RISC-V manual: rem 
Used in Arithmetic, logic and bitsRISC-V assembly
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Arithmetic, logic and bitsAssembly basics
 
Forms  rem , ,   
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; rem writes 3 to t2.
rem t2, t0, t1