#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 *, ...);
main() {
  float fahrenheit;
  float celsius;
  int min_temp = 0;
  int max_temp = 300;
  int temp_step = 20;
  celsius = min_temp;
  printf("Cel Fah\n");
  printf("--- ---\n");
  while (celsius <= max_temp) {
    fahrenheit = celsius / (5.f / 9.f) + 32.f;
    printf("%3.0f %3.0f\n", celsius, fahrenheit);
    celsius = celsius + temp_step;
  }
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x0,-0x10(%rbp)
movl   $0x12c,-0x14(%rbp)
movl   $0x14,-0x18(%rbp)
cvtsi2ssl -0x10(%rbp),%xmm0
movss  %xmm0,-0xc(%rbp)
lea    0xec3(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xebe(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movss  -0xc(%rbp),%xmm1
cvtsi2ssl -0x14(%rbp),%xmm0
ucomiss %xmm1,%xmm0
jb     11c7 <main+0xb7>
movss  -0xc(%rbp),%xmm0
movss  0xe8a(%rip),%xmm1
divss  %xmm1,%xmm0
movss  0xe7a(%rip),%xmm1
addss  %xmm1,%xmm0
movss  %xmm0,-0x8(%rbp)
movss  -0xc(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
movss  -0x8(%rbp),%xmm1
cvtss2sd %xmm1,%xmm1
lea    0xe72(%rip),%rdi
mov    $0x2,%al
call   1030 <printf@plt>
movss  -0xc(%rbp),%xmm0
cvtsi2ssl -0x18(%rbp),%xmm1
addss  %xmm1,%xmm0
movss  %xmm0,-0xc(%rbp)
jmp    115a <main+0x4a>
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %rbx
push   %rax
lea    0xeeb(%rip),%rdi
call   1030 <puts@plt>
lea    0xee7(%rip),%rdi
call   1030 <puts@plt>
mov    $0xffffffec,%ebp
lea    0xec1(%rip),%rbx
nopw   0x0(%rax,%rax,1)
add    $0x14,%ebp
xorps  %xmm1,%xmm1
cvtsi2ss %ebp,%xmm1
xorps  %xmm0,%xmm0
cvtss2sd %xmm1,%xmm0
divss  0xe97(%rip),%xmm1
addss  0xe93(%rip),%xmm1
cvtss2sd %xmm1,%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
cmp    $0x119,%ebp
jb     1150 <main+0x30>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %rbp
ret

LLVM IR (-O0):
@.str = [9 x i8] c"Cel Fah\0A\00"
@.str.1 = [9 x i8] c"--- ---\0A\00"
@.str.2 = [13 x i8] c"%3.0f %3.0f\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca float
%3 = alloca float
%4 = alloca i32
%5 = alloca i32
%6 = alloca i32
store i32 0, i32* %1
store i32 0, i32* %4
store i32 300, i32* %5
store i32 20, i32* %6
%7 = load i32, i32* %4
%8 = sitofp i32 %7 to float
store float %8, float* %3
%9 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0))
%10 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.1, i64 0, i64 0))
br label %11
11: ; preds = %16, %0
%12 = load float, float* %3
%13 = load i32, i32* %5
%14 = sitofp i32 %13 to float
%15 = fcmp ole float %12, %14
br i1 %15, label %16, label %29
16: ; preds = %11
%17 = load float, float* %3
%18 = fdiv float %17, 0x3FE1C71C80000000
%19 = fadd float %18, 3.200000e+01
store float %19, float* %2
%20 = load float, float* %3
%21 = fpext float %20 to double
%22 = load float, float* %2
%23 = fpext float %22 to double
%24 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.2, i64 0, i64 0), double %21, double %23)
%25 = load float, float* %3
%26 = load i32, i32* %6
%27 = sitofp i32 %26 to float
%28 = fadd float %25, %27
store float %28, float* %3
br label %11
29: ; preds = %11
%30 = load i32, i32* %1
ret i32 %30
}

LLVM IR (-O2):
@.str.2 = [13 x i8] c"%3.0f %3.0f\0A\00"
@str = [8 x i8] c"Cel Fah\00"
@str.3 = [8 x i8] c"--- ---\00"
define i32 @main() {
%1 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([8 x i8], [8 x i8]* @str, i64 0, i64 0))
%2 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([8 x i8], [8 x i8]* @str.3, i64 0, i64 0))
br label %3
3: ; preds = %0, %3
%4 = phi i32 [ 0, %0 ], [ %11, %3 ]
%5 = sitofp i32 %4 to float
%6 = fdiv float %5, 0x3FE1C71C80000000
%7 = fadd float %6, 3.200000e+01
%8 = fpext float %5 to double
%9 = fpext float %7 to double
%10 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([13 x i8], [13 x i8]* @.str.2, i64 0, i64 0), double %8, double %9)
%11 = add nuw nsw i32 %4, 20
%12 = icmp ugt i32 %4, 280
br i1 %12, label %13, label %3
13: ; preds = %3
ret i32 0
}