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sgtu

Set if greater than unsigned Pseudo-instruction

Sets $t1 to 1 if $t2 is greater than $t3, or an immediate, as unsigned values, otherwise to 0.

Forms

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).
$t2
A general-purpose register. It may be the same register as $t1.
$t3
A general-purpose register. It may be the same register as $t1.
imm
An immediate value: a signed 16-bit value (-32768 to 32767) or a 32-bit value (-2147483648 to 4294967295). The assembler chooses a supported encoding for the value and other operands; a pseudoinstruction may expand into several instructions. 
# Compare signed and unsigned bit patterns: $t0 is -1 (0xFFFFFFFF), $t1 is 1. Inspect $t2: 1.
li $t0, -1
li $t1, 1
sgtu $t2, $t0, $t1