clz

Operands

$reg, $reg

Count leading zeros : Sets $t1 to the number of consecutive 0 bits in $t2, counted from the most-significant bit downward. For example, if $t2 = 0b00010000..., then $t1 = 3. Returns 32 if $t2 is 0. Often used to compute floor(log2(n)) or to normalize values.

Variants

  • Count leading zeros : Sets $t1 to the number of consecutive 0 bits in $t2, counted from the most-significant bit downward. For example, if $t2 = 0b00010000..., then $t1 = 3. Returns 32 if $t2 is 0. Often used to compute floor(log2(n)) or to normalize values. clz $t1,$t2
# Apply clz to initialized pattern 0x00F0FF00. Inspect $t2: 8.
li $t0, 0x00F0FF00
clz $t2, $t0