#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*/ printf(char *, int, int);
int /*<<< orphan*/ scanf(char *, int *);
int main(void) {
  int n, result;
  while (1) {
    scanf("%d", &n);
    if (n == 0)
      break;
    result = 91;
    if (n > 100)
      result = n - 10;
    printf("f91(%d) = %d\n", n, result);
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeca(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
cmpl   $0x0,-0x8(%rbp)
jne    114e <main+0x2e>
jmp    117f <main+0x5f>
movl   $0x5b,-0xc(%rbp)
cmpl   $0x64,-0x8(%rbp)
jle    1168 <main+0x48>
mov    -0x8(%rbp),%eax
sub    $0xa,%eax
mov    %eax,-0xc(%rbp)
mov    -0x8(%rbp),%esi
mov    -0xc(%rbp),%edx
lea    0xe8e(%rip),%rdi
call   1030 <printf@plt>
jmp    112f <main+0xf>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %r15
push   %r14
push   %rbx
push   %rax
lea    0xed2(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1040 <scanf@plt>
mov    0x4(%rsp),%esi
test   %esi,%esi
je     1184 <main+0x64>
mov    $0x5b,%ebp
lea    0xeb7(%rip),%r14
lea    0xead(%rip),%r15
lea    0x4(%rsp),%rbx
nopl   0x0(%rax,%rax,1)
lea    -0xa(%rsi),%edx
cmp    $0x65,%esi
cmovl  %ebp,%edx
mov    %r14,%rdi
call   1030 <printf@plt>
mov    %r15,%rdi
mov    %rbx,%rsi
call   1040 <scanf@plt>
mov    0x4(%rsp),%esi
test   %esi,%esi
jne    1160 <main+0x40>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
@.str = [3 x i8] c"%d\00"
@.str.1 = [14 x i8] c"f91(%d) = %d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
store i32 0, i32* %1
br label %4
4: ; preds = %0, %15
%5 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i32* %2)
%6 = load i32, i32* %2
%7 = icmp eq i32 %6, 0
br i1 %7, label %8, label %9
8: ; preds = %4
br label %19
9: ; preds = %4
store i32 91, i32* %3
%10 = load i32, i32* %2
%11 = icmp sgt i32 %10, 100
br i1 %11, label %12, label %15
12: ; preds = %9
%13 = load i32, i32* %2
%14 = sub nsw i32 %13, 10
store i32 %14, i32* %3
br label %15
15: ; preds = %12, %9
%16 = load i32, i32* %2
%17 = load i32, i32* %3
%18 = call i32 @printf(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.1, i64 0, i64 0), i32 %16, i32 %17)
br label %4
19: ; preds = %8
ret i32 0
}

LLVM IR (-O2):
@.str = [3 x i8] c"%d\00"
@.str.1 = [14 x i8] c"f91(%d) = %d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
%3 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i32* %1)
%4 = load i32, i32* %1
%5 = icmp eq i32 %4, 0
br i1 %5, label %15, label %6
6: ; preds = %0, %6
%7 = phi i32 [ %13, %6 ], [ %4, %0 ]
%8 = icmp sgt i32 %7, 100
%9 = add nsw i32 %7, -10
%10 = select i1 %8, i32 %9, i32 91
%11 = call i32 @printf(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.1, i64 0, i64 0), i32 %7, i32 %10)
%12 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i32* %1)
%13 = load i32, i32* %1
%14 = icmp eq i32 %13, 0
br i1 %14, label %15, label %6
15: ; preds = %6, %0
ret i32 0
}