-1
你好,我在MIPS的运动必须调用一个函数来计算数字的绝对值功能的MIPS计算绝对值
我有写2个代码,但如果您有任何其他的解决办法写出来
.data
message:.asciiz "give number: "
.text
main:
li $v0, 4
la $a0, message
syscall
li $v0, 5
syscall
add $t1, $v0, $zero
jal absolute
add $v0,$t2,$zero
li $v0, 1
syscall
li $v0, 10
syscall
absolute: ori $t2,$t1,0 #copy r1 into r2
slt $t3,$t1, $zero #is value < 0 ?
beq $t3,$zero,gg #if r1 is positive, skip next inst
sub $t2,$zero, $t0 #r2 = 0 - r1
jr $ra
gg:
#t2
和第二代码是这个
.data
question: .asciiz "give number"
.text
main:
li $v0, 4
la $a0, question
syscall
li $v0, 5
syscall
jal absolute
li $v0, 1
syscall
li $v1, 1
syscall
li $v0, 10
syscall
absolute:
slti $t0,$a0,0
bne $t0,$zero,g1
add $v0,$a0,$zero
jr $ra
g1:
sub $t2,$a0,$a0
sub $v1,$t2,$a0
j absolute
[在MIPS绝对值(http://stackoverflow.com/questions/2312543/absolute-value-in-mips) – Michael