mipt_clang/asm/solutions.md

zero

xor %eax, %eax

one

xor %eax, %eax
inc %eax

next

inc %ax

prev

dec %ax

sum

mov %ax, %dx
add %bx, %dx

sub

mov %rax, %rdx
sub %rbx, %rdx

imul

imul %bl
mov %ax, %dx

idiv

cwd
idiv %bx
mov %ax, %dx 

lea

lea (%rax, %rbx, 8), %rdx

lea1

lea (%rax, %rax, 4), %rdx

lea32

lea (%eax, %ebx, 8), %edx

egalite

cmp %ax, %bx
jne nya
mov $1, %dx
jmp nya_
nya:
mov $0, %dx
nya_:

factorial

xor %edx, %edx
inc %edx
cmp $0, %al
je end
mov %al, %cl
mov %ecx, %eax
loop:
mov %eax, %edx
cmp $1, %ecx
jle end
dec %ecx
mul %ecx
jmp loop
end:

factorial64

xor %rdx, %rdx
inc %rdx
cmp $0, %al
je end
mov %al, %cl
mov %rcx, %rax
loop:
mov %rax, %rdx
cmp $1, %rcx
jle end
dec %rcx
mul %rcx
jmp loop
end:

antifa

xor %ecx, %ecx
inc %ecx
loop:
cmp $1, %eax
je end
inc %ecx
cdq
div %ecx
jmp loop
end:
mov %ecx, %ebx

antifa64

xor %rcx, %rcx
inc %rcx
loop:
cmp $1, %rax
je end
inc %rcx
cqo
div %rcx
jmp loop
end:
mov %rcx, %rbx

vector

xor %rbx, %rbx
cmp $0, %rcx
je end
dec %rcx
loop:
lea (%rax, %rcx, 8), %rdx
add (%rdx), %rbx
dec %rcx
cmp $-1, %rcx
je end
jmp loop
end: