#define NULL ((void *)0)
typedef unsigned long size_t; // Customize by platform.
typedef long intptr_t;
typedef unsigned long uintptr_t;
typedef long scalar_t__; // Either arithmetic or pointer type.
/* By default, we understand bool (as a convenience). */
typedef int bool;
#define false 0
#define true 1

/* Forward declarations */

/* Type definitions */

/* Variables and functions */
int /*<<< orphan*/ palindrome(int, int);
int /*<<< orphan*/ printf(char *);
int /*<<< orphan*/ scanf(char *, int *);
int main() {
  int a, b, c, sum = 0;
  printf("Enter a number");
  scanf("%d", &a);
  c = a;
  while (a > 0) {
    b = a % 10;
    a = a / 10;
    sum = sum * 10 + b;
  }
  palindrome(c, sum);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x0,-0x14(%rbp)
lea    0xeb3(%rip),%rdi
call   1030 <printf@plt>
lea    0xeb6(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1050 <scanf@plt>
mov    -0x8(%rbp),%eax
mov    %eax,-0x10(%rbp)
cmpl   $0x0,-0x8(%rbp)
jle    119d <main+0x6d>
mov    -0x8(%rbp),%eax
mov    $0xa,%ecx
cltd
idiv   %ecx
mov    %edx,-0xc(%rbp)
mov    -0x8(%rbp),%eax
mov    $0xa,%ecx
cltd
idiv   %ecx
mov    %eax,-0x8(%rbp)
imul   $0xa,-0x14(%rbp),%eax
add    -0xc(%rbp),%eax
mov    %eax,-0x14(%rbp)
jmp    1168 <main+0x38>
mov    -0x10(%rbp),%edi
mov    -0x14(%rbp),%esi
call   1040 <palindrome@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xec8(%rip),%rdi
call   1030 <printf@plt>
lea    0xecb(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1050 <scanf@plt>
mov    0x4(%rsp),%edi
xor    %esi,%esi
test   %edi,%edi
jle    1187 <main+0x57>
mov    $0xcccccccd,%r8d
mov    %edi,%ecx
mov    %ecx,%edx
mov    %ecx,%ecx
imul   %r8,%rcx
shr    $0x23,%rcx
lea    (%rcx,%rcx,1),%eax
lea    (%rax,%rax,4),%r9d
mov    %edx,%eax
sub    %r9d,%eax
lea    (%rsi,%rsi,4),%esi
lea    (%rax,%rsi,2),%esi
cmp    $0x9,%edx
ja     1160 <main+0x30>
mov    %ecx,0x4(%rsp)
call   1040 <palindrome@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [15 x i8] c"Enter a number\00"
@.str.1 = [3 x i8] c"%d\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32
%5 = alloca i32
store i32 0, i32* %1
store i32 0, i32* %5
%6 = call i32 @printf(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str, i64 0, i64 0))
%7 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %2)
%8 = load i32, i32* %2
store i32 %8, i32* %4
br label %9
9: ; preds = %12, %0
%10 = load i32, i32* %2
%11 = icmp sgt i32 %10, 0
br i1 %11, label %12, label %21
12: ; preds = %9
%13 = load i32, i32* %2
%14 = srem i32 %13, 10
store i32 %14, i32* %3
%15 = load i32, i32* %2
%16 = sdiv i32 %15, 10
store i32 %16, i32* %2
%17 = load i32, i32* %5
%18 = mul nsw i32 %17, 10
%19 = load i32, i32* %3
%20 = add nsw i32 %18, %19
store i32 %20, i32* %5
br label %9
21: ; preds = %9
%22 = load i32, i32* %4
%23 = load i32, i32* %5
%24 = call i32 @palindrome(i32 %22, i32 %23)
ret i32 0
}

LLVM IR (-O2):
@.str = [15 x i8] c"Enter a number\00"
@.str.1 = [3 x i8] c"%d\00"
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
%3 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([15 x i8], [15 x i8]* @.str, i64 0, i64 0))
%4 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %1)
%5 = load i32, i32* %1
%6 = icmp sgt i32 %5, 0
br i1 %6, label %7, label %16
7: ; preds = %0, %7
%8 = phi i32 [ %13, %7 ], [ 0, %0 ]
%9 = phi i32 [ %11, %7 ], [ %5, %0 ]
%10 = urem i32 %9, 10
%11 = udiv i32 %9, 10
%12 = mul nsw i32 %8, 10
%13 = add nsw i32 %12, %10
%14 = icmp ult i32 %9, 10
br i1 %14, label %15, label %7
15: ; preds = %7
store i32 %11, i32* %1
br label %16
16: ; preds = %15, %0
%17 = phi i32 [ %13, %15 ], [ 0, %0 ]
%18 = call i32 @palindrome(i32 %5, i32 %17)
ret i32 0
}