## Subroutine that finds largest unsigned number, smallest signed number in 
## array of words
# Address passed in $a0, # of elements in $a1


# assumes count is non zero

	.data
array:   .word  -8000, -765, -1, -5, -34000,-40

msg1:	.asciiz "Smallest unsigned: \n "
msg2:	.asciiz "\nLargest signed:  \n "


      .text

main:
      la  $a0, array
      ori $a1, $zero, 6
      jalr t1ec

      or $s0, $zero, $v0   # save smallest unsigned (should be -34000)
      or $s1, $zero, $v1   # save largest signed (should be equal to -1)

      addiu $v0, $0, 4
      la $a0 msg1
      syscall

      addiu $v0, $zero, 1
      or $a0, $zero,$s0
      syscall

      addiu $v0, $0, 4
      la $a0 msg2
      syscall

      addiu $v0, $zero, 1
      or $a0, $zero,$s1
      syscall
    
      
#exit
	addiu $v0 $0 10
	syscall			# syscall 10 (exit)



t1ec:

      or $t3, $a0, $zero     # t3 will contain address offset
      or $t4, $a1, $zero     # t4 will contain count value

      lw $v0, 0($t3)         # get first value
      or $v1, $v0, $zero     # into both $v0, $v1

loop:
      lw $t2, 0($t3)         # read value from array

      slt $t0, $v1, $t2      # is new value > old largest value?
      beq $zero,$t0, skip
      or  $v1, $t2, $zero    # save new largest signed value

skip:
      sltu $t0, $t2, $v0      # is new value < old smallest  value?
      beq  $zero,$t0, skip2

      or $v0, $t2, $zero     # save new smallest unsiged value

skip2:

      addi $t3,$t3, 4        # point at next array value
      addi $t4,$t4, -1       # subtract one
      bne $zero $t4, loop    # get next value


      jr  $ra                # exit, $a0, $a1 preserved, only temp registers used



      

      

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