#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, double);
int main(void) {
  printf("%3c %6c\n", 'F', 'C');
  for (int fahr = 300; fahr >= 0; fahr -= 20)
    printf("%3d %6.1f\n", fahr, (5.0 / 9.0) * (fahr - 32.0));
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xef2(%rip),%rdi
mov    $0x46,%esi
movsd  0xecd(%rip),%xmm0
call   1030 <printf@plt>
movl   $0x12c,-0x8(%rbp)
cmpl   $0x0,-0x8(%rbp)
jl     1183 <main+0x73>
mov    -0x8(%rbp),%esi
cvtsi2sdl -0x8(%rbp),%xmm1
movsd  0xeb7(%rip),%xmm0
subsd  %xmm0,%xmm1
movsd  0xea3(%rip),%xmm0
mulsd  %xmm1,%xmm0
lea    0xeb1(%rip),%rdi
call   1030 <printf@plt>
mov    -0x8(%rbp),%eax
sub    $0x14,%eax
mov    %eax,-0x8(%rbp)
jmp    113f <main+0x2f>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
lea    0xf70(%rip),%rdi
movsd  0xee0(%rip),%xmm0
mov    $0x46,%esi
call   1030 <printf@plt>
lea    0xf60(%rip),%rbx
movsd  0xecf(%rip),%xmm0
mov    %rbx,%rdi
mov    $0x12c,%esi
call   1030 <printf@plt>
movsd  0xec2(%rip),%xmm0
mov    %rbx,%rdi
mov    $0x118,%esi
call   1030 <printf@plt>
movsd  0xeb5(%rip),%xmm0
mov    %rbx,%rdi
mov    $0x104,%esi
call   1030 <printf@plt>
movsd  0xea8(%rip),%xmm0
mov    %rbx,%rdi
mov    $0xf0,%esi
call   1030 <printf@plt>
movsd  0xe9b(%rip),%xmm0
mov    %rbx,%rdi
mov    $0xdc,%esi
call   1030 <printf@plt>
movsd  0xe8e(%rip),%xmm0
mov    %rbx,%rdi
mov    $0xc8,%esi
call   1030 <printf@plt>
movsd  0xe81(%rip),%xmm0
mov    %rbx,%rdi
mov    $0xb4,%esi
call   1030 <printf@plt>
movsd  0xe74(%rip),%xmm0
mov    %rbx,%rdi
mov    $0xa0,%esi
call   1030 <printf@plt>
movsd  0xe67(%rip),%xmm0
mov    %rbx,%rdi
mov    $0x8c,%esi
call   1030 <printf@plt>
movsd  0xe5a(%rip),%xmm0
mov    %rbx,%rdi
mov    $0x78,%esi
call   1030 <printf@plt>
movsd  0xe4d(%rip),%xmm0
mov    %rbx,%rdi
mov    $0x64,%esi
call   1030 <printf@plt>
movsd  0xe40(%rip),%xmm0
mov    %rbx,%rdi
mov    $0x50,%esi
call   1030 <printf@plt>
movsd  0xe33(%rip),%xmm0
mov    %rbx,%rdi
mov    $0x3c,%esi
call   1030 <printf@plt>
movsd  0xe26(%rip),%xmm0
mov    %rbx,%rdi
mov    $0x28,%esi
call   1030 <printf@plt>
movsd  0xe19(%rip),%xmm0
mov    %rbx,%rdi
mov    $0x14,%esi
call   1030 <printf@plt>
movsd  0xe0c(%rip),%xmm0
mov    %rbx,%rdi
xor    %esi,%esi
call   1030 <printf@plt>
xor    %eax,%eax
pop    %rbx
ret

LLVM IR (-O0):
@.str = [9 x i8] c"%3c %6c\0A\00"
@.str.1 = [11 x i8] c"%3d %6.1f\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
store i32 0, i32* %1
%3 = call i32 @printf(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0), i32 70, double 6.700000e+01)
store i32 300, i32* %2
br label %4
4: ; preds = %14, %0
%5 = load i32, i32* %2
%6 = icmp sge i32 %5, 0
br i1 %6, label %7, label %17
7: ; preds = %4
%8 = load i32, i32* %2
%9 = load i32, i32* %2
%10 = sitofp i32 %9 to double
%11 = fsub double %10, 3.200000e+01
%12 = fmul double 0x3FE1C71C71C71C72, %11
%13 = call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.1, i64 0, i64 0), i32 %8, double %12)
br label %14
14: ; preds = %7
%15 = load i32, i32* %2
%16 = sub nsw i32 %15, 20
store i32 %16, i32* %2
br label %4
17: ; preds = %4
ret i32 0
}

LLVM IR (-O2):
@.str = [9 x i8] c"%3c %6c\0A\00"
@.str.1 = [11 x i8] c"%3d %6.1f\0A\00"
define i32 @main() {
%1 = tail call i32 @printf(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0), i32 70, double 6.700000e+01)
%2 = tail call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.1, i64 0, i64 0), i32 300, double 0x40629C71C71C71C7)
%3 = tail call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.1, i64 0, i64 0), i32 280, double 0x406138E38E38E38E)
%4 = tail call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.1, i64 0, i64 0), i32 260, double 0x405FAAAAAAAAAAAB)
%5 = tail call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.1, i64 0, i64 0), i32 240, double 0x405CE38E38E38E39)
%6 = tail call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.1, i64 0, i64 0), i32 220, double 0x405A1C71C71C71C7)
%7 = tail call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.1, i64 0, i64 0), i32 200, double 0x4057555555555556)
%8 = tail call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.1, i64 0, i64 0), i32 180, double 0x40548E38E38E38E4)
%9 = tail call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.1, i64 0, i64 0), i32 160, double 0x4051C71C71C71C72)
%10 = tail call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.1, i64 0, i64 0), i32 140, double 6.000000e+01)
%11 = tail call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.1, i64 0, i64 0), i32 120, double 0x404871C71C71C71D)
%12 = tail call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.1, i64 0, i64 0), i32 100, double 0x4042E38E38E38E39)
%13 = tail call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.1, i64 0, i64 0), i32 80, double 0x403AAAAAAAAAAAAB)
%14 = tail call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.1, i64 0, i64 0), i32 60, double 0x402F1C71C71C71C8)
%15 = tail call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.1, i64 0, i64 0), i32 40, double 0x4011C71C71C71C72)
%16 = tail call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.1, i64 0, i64 0), i32 20, double 0xC01AAAAAAAAAAAAB)
%17 = tail call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.1, i64 0, i64 0), i32 0, double 0xC031C71C71C71C72)
ret i32 0
}