#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 */
#define V4L2_FIELD_ALTERNATE 137
#define V4L2_FIELD_ANY 136
#define V4L2_FIELD_BOTTOM 135
#define V4L2_FIELD_INTERLACED 134
#define V4L2_FIELD_INTERLACED_BT 133
#define V4L2_FIELD_INTERLACED_TB 132
#define V4L2_FIELD_NONE 131
#define V4L2_FIELD_SEQ_BT 130
#define V4L2_FIELD_SEQ_TB 129
#define V4L2_FIELD_TOP 128
const char *field2s(int val) {
  switch (val) {
  case V4L2_FIELD_ANY:
    return "Any";
  case V4L2_FIELD_NONE:
    return "None";
  case V4L2_FIELD_TOP:
    return "Top";
  case V4L2_FIELD_BOTTOM:
    return "Bottom";
  case V4L2_FIELD_INTERLACED:
    return "Interlaced";
  case V4L2_FIELD_SEQ_TB:
    return "Sequential Top-Bottom";
  case V4L2_FIELD_SEQ_BT:
    return "Sequential Bottom-Top";
  case V4L2_FIELD_ALTERNATE:
    return "Alternating";
  case V4L2_FIELD_INTERLACED_TB:
    return "Interlaced Top-Bottom";
  case V4L2_FIELD_INTERLACED_BT:
    return "Interlaced Bottom-Top";
  default:
    return "Unknown";
  }
}


x86 assembly (clang, -O0):
<field2s>:
push   %rbp
mov    %rsp,%rbp
mov    %edi,-0xc(%rbp)
mov    -0xc(%rbp),%eax
add    $0xffffff80,%eax
mov    %eax,%ecx
mov    %rcx,-0x18(%rbp)
sub    $0x9,%eax
ja     11d0 <field2s+0xd0>
mov    -0x18(%rbp),%rax
lea    0xed9(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
jmp    *%rax
lea    0xef1(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11db <field2s+0xdb>
lea    0xee5(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11db <field2s+0xdb>
lea    0xf45(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11db <field2s+0xdb>
lea    0xf1c(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11db <field2s+0xdb>
lea    0xeba(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11db <field2s+0xdb>
lea    0xeb5(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11db <field2s+0xdb>
lea    0xebb(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11db <field2s+0xdb>
lea    0xec1(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11db <field2s+0xdb>
lea    0xebd(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11db <field2s+0xdb>
lea    0xec3(%rip),%rax
mov    %rax,-0x8(%rbp)
jmp    11db <field2s+0xdb>
lea    0xec9(%rip),%rax
mov    %rax,-0x8(%rbp)
mov    -0x8(%rbp),%rax
pop    %rbp
ret

x86 assembly (clang, -O2):
<field2s>:
add    $0xffffff80,%edi
cmp    $0x9,%edi
ja     111a <field2s+0x1a>
movslq %edi,%rax
lea    0xf6e(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
ret
lea    0xf57(%rip),%rax
ret

LLVM IR (-O0):
@.str = [4 x i8] c"Any\00"
@.str.1 = [5 x i8] c"None\00"
@.str.2 = [4 x i8] c"Top\00"
@.str.3 = [7 x i8] c"Bottom\00"
@.str.4 = [11 x i8] c"Interlaced\00"
@.str.5 = [22 x i8] c"Sequential Top-Bottom\00"
@.str.6 = [22 x i8] c"Sequential Bottom-Top\00"
@.str.7 = [12 x i8] c"Alternating\00"
@.str.8 = [22 x i8] c"Interlaced Top-Bottom\00"
@.str.9 = [22 x i8] c"Interlaced Bottom-Top\00"
@.str.10 = [8 x i8] c"Unknown\00"
define i8* @field2s(i32 %0) {
%2 = alloca i8*
%3 = alloca i32
store i32 %0, i32* %3
%4 = load i32, i32* %3
switch i32 %4, label %15 [
i32 136, label %5
i32 131, label %6
i32 128, label %7
i32 135, label %8
i32 134, label %9
i32 129, label %10
i32 130, label %11
i32 137, label %12
i32 132, label %13
i32 133, label %14
]
5: ; preds = %1
store i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i8** %2
br label %16
6: ; preds = %1
store i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), i8** %2
br label %16
7: ; preds = %1
store i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i8** %2
br label %16
8: ; preds = %1
store i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.3, i64 0, i64 0), i8** %2
br label %16
9: ; preds = %1
store i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.4, i64 0, i64 0), i8** %2
br label %16
10: ; preds = %1
store i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str.5, i64 0, i64 0), i8** %2
br label %16
11: ; preds = %1
store i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str.6, i64 0, i64 0), i8** %2
br label %16
12: ; preds = %1
store i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.7, i64 0, i64 0), i8** %2
br label %16
13: ; preds = %1
store i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str.8, i64 0, i64 0), i8** %2
br label %16
14: ; preds = %1
store i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str.9, i64 0, i64 0), i8** %2
br label %16
15: ; preds = %1
store i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.10, i64 0, i64 0), i8** %2
br label %16
16: ; preds = %15, %14, %13, %12, %11, %10, %9, %8, %7, %6, %5
%17 = load i8*, i8** %2
ret i8* %17
}

LLVM IR (-O2):
@.str = [4 x i8] c"Any\00"
@.str.1 = [5 x i8] c"None\00"
@.str.2 = [4 x i8] c"Top\00"
@.str.3 = [7 x i8] c"Bottom\00"
@.str.4 = [11 x i8] c"Interlaced\00"
@.str.5 = [22 x i8] c"Sequential Top-Bottom\00"
@.str.6 = [22 x i8] c"Sequential Bottom-Top\00"
@.str.7 = [12 x i8] c"Alternating\00"
@.str.8 = [22 x i8] c"Interlaced Top-Bottom\00"
@.str.9 = [22 x i8] c"Interlaced Bottom-Top\00"
@.str.10 = [8 x i8] c"Unknown\00"
@reltable.field2s = [10 x i32] [i32 trunc (i64 sub (i64 ptrtoint ([4 x i8]* @.str.2 to i64), i64 ptrtoint ([10 x i32]* @reltable.field2s to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([22 x i8]* @.str.5 to i64), i64 ptrtoint ([10 x i32]* @reltable.field2s to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([22 x i8]* @.str.6 to i64), i64 ptrtoint ([10 x i32]* @reltable.field2s to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([5 x i8]* @.str.1 to i64), i64 ptrtoint ([10 x i32]* @reltable.field2s to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([22 x i8]* @.str.8 to i64), i64 ptrtoint ([10 x i32]* @reltable.field2s to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([22 x i8]* @.str.9 to i64), i64 ptrtoint ([10 x i32]* @reltable.field2s to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([11 x i8]* @.str.4 to i64), i64 ptrtoint ([10 x i32]* @reltable.field2s to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([7 x i8]* @.str.3 to i64), i64 ptrtoint ([10 x i32]* @reltable.field2s to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([4 x i8]* @.str to i64), i64 ptrtoint ([10 x i32]* @reltable.field2s to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([12 x i8]* @.str.7 to i64), i64 ptrtoint ([10 x i32]* @reltable.field2s to i64)) to i32)]
define i8* @field2s(i32 %0) {
%2 = add i32 %0, -128
%3 = icmp ult i32 %2, 10
br i1 %3, label %4, label %8
4: ; preds = %1
%5 = sext i32 %2 to i64
%6 = shl i64 %5, 2
%7 = call i8* @llvm.load.relative.i64(i8* bitcast ([10 x i32]* @reltable.field2s to i8*), i64 %6)
br label %8
8: ; preds = %1, %4
%9 = phi i8* [ %7, %4 ], [ getelementptr inbounds ([8 x i8], [8 x i8]* @.str.10, i64 0, i64 0), %1 ]
ret i8* %9
}