TGEIU - MIPS instruction reference

tgeiuTrap if greater or equal to immediate (unsigned) 
Raises a trap exception if $t1 is greater than or equal to an immediate, as unsigned values.
Forms  tgeiu ,   
Operands $t1 Any general-purpose register, $0 to $31, using its numeric or named spelling, such as $8 or $t0 ($zero is $0; $ra is $31). 
imm16 A signed 16-bit immediate, -32768 to 32767. 
The immediate is sign-extended to 32 bits then interpreted as unsigned.
 # This named trap is expected to stop execution when its predicate is true.
li $t0, 5
tgeiu $t0, 5
li $t2, 99 # not reached