#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*/ getchar();
int /*<<< orphan*/ printf(char *, ...);
main() {
  float fahr, celsius;
  int lower, upper, step;
  lower = 0;
  upper = 300;
  step = 20;
  printf("Celsius  Fahr\n");
  celsius = lower;
  while (celsius <= upper) {
    fahr = (5.0 / 9.0) * celsius + 32.0;
    printf("%3.0f    %6.1f\n", celsius, fahr);
    celsius = celsius + step;
  }
  getchar();
}


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)
lea    0xec5(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
cvtsi2ssl -0x10(%rbp),%xmm0
movss  %xmm0,-0xc(%rbp)
movss  -0xc(%rbp),%xmm1
cvtsi2ssl -0x14(%rbp),%xmm0
ucomiss %xmm1,%xmm0
jb     11d1 <main+0xb1>
movss  -0xc(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
movsd  0xe80(%rip),%xmm1
mulsd  %xmm1,%xmm0
movsd  0xe7c(%rip),%xmm1
addsd  %xmm1,%xmm0
cvtsd2ss %xmm0,%xmm0
movss  %xmm0,-0x8(%rbp)
movss  -0xc(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
movss  -0x8(%rbp),%xmm1
cvtss2sd %xmm1,%xmm1
lea    0xe6d(%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    115c <main+0x3c>
mov    $0x0,%al
call   1040 <getchar@plt>
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
lea    0xfd0(%rip),%rdi
call   1030 <puts@plt>
lea    0xfb4(%rip),%rbx
movsd  0xeb4(%rip),%xmm1
xorps  %xmm0,%xmm0
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movsd  0xea7(%rip),%xmm0
movsd  0xea7(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movsd  0xe9d(%rip),%xmm0
movsd  0xe9d(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movsd  0xe93(%rip),%xmm0
movsd  0xe93(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movsd  0xe89(%rip),%xmm0
movsd  0xe89(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movsd  0xe7f(%rip),%xmm0
movsd  0xe7f(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movsd  0xe75(%rip),%xmm0
movsd  0xe75(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movsd  0xe6b(%rip),%xmm0
movsd  0xe6b(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movsd  0xe61(%rip),%xmm0
movsd  0xe61(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movsd  0xe57(%rip),%xmm0
movsd  0xe57(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movsd  0xe4d(%rip),%xmm0
movsd  0xe4d(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movsd  0xe43(%rip),%xmm0
movsd  0xe43(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movsd  0xe39(%rip),%xmm0
movsd  0xe39(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movsd  0xe2f(%rip),%xmm0
movsd  0xe2f(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movsd  0xe25(%rip),%xmm0
movsd  0xe25(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movsd  0xe1b(%rip),%xmm0
movsd  0xe1b(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
xor    %eax,%eax
call   1050 <getchar@plt>
xor    %eax,%eax
pop    %rbx
ret

LLVM IR (-O0):
@.str = [15 x i8] c"Celsius Fahr\0A\00"
@.str.1 = [16 x i8] c"%3.0f %6.1f\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 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str, i64 0, i64 0))
%8 = load i32, i32* %4
%9 = sitofp i32 %8 to float
store float %9, float* %3
br label %10
10: ; preds = %15, %0
%11 = load float, float* %3
%12 = load i32, i32* %5
%13 = sitofp i32 %12 to float
%14 = fcmp ole float %11, %13
br i1 %14, label %15, label %29
15: ; preds = %10
%16 = load float, float* %3
%17 = fpext float %16 to double
%18 = call double @llvm.fmuladd.f64(double 0x3FE1C71C71C71C72, double %17, double 3.200000e+01)
%19 = fptrunc double %18 to float
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 ([16 x i8], [16 x i8]* @.str.1, 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 %10
29: ; preds = %10
%30 = call i32 (...) @getchar()
%31 = load i32, i32* %1
ret i32 %31
}

LLVM IR (-O2):
@.str.1 = [16 x i8] c"%3.0f %6.1f\0A\00"
@str = [14 x i8] c"Celsius Fahr\00"
define i32 @main() {
%1 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @str, i64 0, i64 0))
%2 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([16 x i8], [16 x i8]* @.str.1, i64 0, i64 0), double 0.000000e+00, double 3.200000e+01)
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([16 x i8], [16 x i8]* @.str.1, i64 0, i64 0), double 2.000000e+01, double 0x40458E38E0000000)
%4 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([16 x i8], [16 x i8]* @.str.1, i64 0, i64 0), double 4.000000e+01, double 0x404B1C71C0000000)
%5 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([16 x i8], [16 x i8]* @.str.1, i64 0, i64 0), double 6.000000e+01, double 0x4050555560000000)
%6 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([16 x i8], [16 x i8]* @.str.1, i64 0, i64 0), double 8.000000e+01, double 0x40531C71C0000000)
%7 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([16 x i8], [16 x i8]* @.str.1, i64 0, i64 0), double 1.000000e+02, double 0x4055E38E40000000)
%8 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([16 x i8], [16 x i8]* @.str.1, i64 0, i64 0), double 1.200000e+02, double 0x4058AAAAA0000000)
%9 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([16 x i8], [16 x i8]* @.str.1, i64 0, i64 0), double 1.400000e+02, double 0x405B71C720000000)
%10 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([16 x i8], [16 x i8]* @.str.1, i64 0, i64 0), double 1.600000e+02, double 0x405E38E380000000)
%11 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([16 x i8], [16 x i8]* @.str.1, i64 0, i64 0), double 1.800000e+02, double 1.320000e+02)
%12 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([16 x i8], [16 x i8]* @.str.1, i64 0, i64 0), double 2.000000e+02, double 0x4061E38E40000000)
%13 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([16 x i8], [16 x i8]* @.str.1, i64 0, i64 0), double 2.200000e+02, double 0x4063471C80000000)
%14 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([16 x i8], [16 x i8]* @.str.1, i64 0, i64 0), double 2.400000e+02, double 0x4064AAAAA0000000)
%15 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([16 x i8], [16 x i8]* @.str.1, i64 0, i64 0), double 2.600000e+02, double 0x40660E38E0000000)
%16 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([16 x i8], [16 x i8]* @.str.1, i64 0, i64 0), double 2.800000e+02, double 0x406771C720000000)
%17 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([16 x i8], [16 x i8]* @.str.1, i64 0, i64 0), double 3.000000e+02, double 0x4068D55560000000)
%18 = tail call i32 (...) @getchar()
ret i32 0
}