用汇编语言计算分段函数Y= 3*X-5 |x|<=3 6 |x|>3
时间: 2023-11-23 15:52:26 浏览: 41
好的,以下是汇编代码实现分段函数Y= 3*X-5 |x|<=3 6 |x|>3:
```
section .data
x dw 0
y dw 0
section .text
global _start
_start:
; 读入x的值
mov eax, 3
mov ebx, 0
mov ecx, x
int 0x80
; 计算y的值
cmp word [x], 3
jle less_than_3
mov ax, [x]
sub ax, 3
mov bx, 6
mul bx
add ax, 7
jmp end_if
less_than_3:
cmp word [x], -3
jge greater_than_minus_3
mov ax, [x]
neg ax
sub ax, 3
mov bx, 6
mul bx
add ax, 7
neg ax
jmp end_if
greater_than_minus_3:
mov ax, [x]
mov bx, 3
mul bx
mov ax, [x]
mov bx, 3
mul bx
sub ax, 5
end_if:
mov [y], ax
; 输出y的值
mov eax, 4
mov ebx, 1
mov ecx, y
mov edx, 2
int 0x80
; 退出程序
mov eax, 1
xor ebx, ebx
int 0x80
```