#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 fahr, celsius;
  float lower, upper, step;
  lower = 0;
  upper = 300;
  step = 20;
  printf("Celsius\tFahrenheit\n-------\t----------\n");
  celsius = lower;
  while (celsius <= upper) {
    fahr = (9.0 / 5.0) * celsius + 32.0;
    printf("%7.0f\t%10.0f\n", celsius, fahr);
    celsius = celsius + step;
  }
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
xorps  %xmm0,%xmm0
movss  %xmm0,-0x10(%rbp)
movss  0xed5(%rip),%xmm0
movss  %xmm0,-0x14(%rbp)
movss  0xec4(%rip),%xmm0
movss  %xmm0,-0x18(%rbp)
lea    0xed0(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movss  -0x10(%rbp),%xmm0
movss  %xmm0,-0xc(%rbp)
movss  -0xc(%rbp),%xmm1
movss  -0x14(%rbp),%xmm0
ucomiss %xmm1,%xmm0
jb     11ca <main+0xba>
movss  -0xc(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
movsd  0xe8b(%rip),%xmm1
mulsd  %xmm1,%xmm0
movsd  0xe87(%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    0xe90(%rip),%rdi
mov    $0x2,%al
call   1030 <printf@plt>
movss  -0xc(%rbp),%xmm0
addss  -0x18(%rbp),%xmm0
movss  %xmm0,-0xc(%rbp)
jmp    1159 <main+0x49>
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
lea    0xfd6(%rip),%rdi
call   1030 <puts@plt>
lea    0xfbc(%rip),%rbx
movsd  0xec4(%rip),%xmm1
xorps  %xmm0,%xmm0
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movsd  0xeb7(%rip),%xmm0
movsd  0xeb7(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movsd  0xead(%rip),%xmm0
movsd  0xead(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movsd  0xea3(%rip),%xmm0
movsd  0xea3(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movsd  0xe99(%rip),%xmm0
movsd  0xe99(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movsd  0xe8f(%rip),%xmm0
movsd  0xe8f(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movsd  0xe85(%rip),%xmm0
movsd  0xe85(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movsd  0xe7b(%rip),%xmm1
mov    %rbx,%rdi
movsd  0xe38(%rip),%xmm0
mov    $0x2,%al
call   1040 <printf@plt>
movsd  0xe69(%rip),%xmm0
movsd  0xe69(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movsd  0xe5f(%rip),%xmm0
movsd  0xe5f(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movsd  0xe55(%rip),%xmm0
movsd  0xe55(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movsd  0xe4b(%rip),%xmm0
movsd  0xe4b(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movsd  0xe41(%rip),%xmm0
movsd  0xe41(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movsd  0xe37(%rip),%xmm0
movsd  0xe37(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movsd  0xe2d(%rip),%xmm0
movsd  0xe2d(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movsd  0xe23(%rip),%xmm0
movsd  0xe23(%rip),%xmm1
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
xor    %eax,%eax
pop    %rbx
ret

LLVM IR (-O0):
@.str = [39 x i8] c"Celsius\09Fahrenheit\0A-------\09----------\0A\00"
@.str.1 = [14 x i8] c"%7.0f\09%10.0f\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca float
%3 = alloca float
%4 = alloca float
%5 = alloca float
%6 = alloca float
store i32 0, i32* %1
store float 0.000000e+00, float* %4
store float 3.000000e+02, float* %5
store float 2.000000e+01, float* %6
%7 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([39 x i8], [39 x i8]* @.str, i64 0, i64 0))
%8 = load float, float* %4
store float %8, float* %3
br label %9
9: ; preds = %13, %0
%10 = load float, float* %3
%11 = load float, float* %5
%12 = fcmp ole float %10, %11
br i1 %12, label %13, label %26
13: ; preds = %9
%14 = load float, float* %3
%15 = fpext float %14 to double
%16 = call double @llvm.fmuladd.f64(double 1.800000e+00, double %15, double 3.200000e+01)
%17 = fptrunc double %16 to float
store float %17, float* %2
%18 = load float, float* %3
%19 = fpext float %18 to double
%20 = load float, float* %2
%21 = fpext float %20 to double
%22 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.1, i64 0, i64 0), double %19, double %21)
%23 = load float, float* %3
%24 = load float, float* %6
%25 = fadd float %23, %24
store float %25, float* %3
br label %9
26: ; preds = %9
%27 = load i32, i32* %1
ret i32 %27
}

LLVM IR (-O2):
@.str.1 = [14 x i8] c"%7.0f\09%10.0f\0A\00"
@str = [38 x i8] c"Celsius\09Fahrenheit\0A-------\09----------\00"
define i32 @main() {
%1 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([38 x i8], [38 x i8]* @str, i64 0, i64 0))
%2 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 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 ([14 x i8], [14 x i8]* @.str.1, i64 0, i64 0), double 2.000000e+01, double 6.800000e+01)
%4 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @.str.1, i64 0, i64 0), double 4.000000e+01, double 1.040000e+02)
%5 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @.str.1, i64 0, i64 0), double 6.000000e+01, double 1.400000e+02)
%6 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @.str.1, i64 0, i64 0), double 8.000000e+01, double 1.760000e+02)
%7 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @.str.1, i64 0, i64 0), double 1.000000e+02, double 2.120000e+02)
%8 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @.str.1, i64 0, i64 0), double 1.200000e+02, double 2.480000e+02)
%9 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @.str.1, i64 0, i64 0), double 1.400000e+02, double 2.840000e+02)
%10 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @.str.1, i64 0, i64 0), double 1.600000e+02, double 3.200000e+02)
%11 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @.str.1, i64 0, i64 0), double 1.800000e+02, double 3.560000e+02)
%12 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @.str.1, i64 0, i64 0), double 2.000000e+02, double 3.920000e+02)
%13 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @.str.1, i64 0, i64 0), double 2.200000e+02, double 4.280000e+02)
%14 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @.str.1, i64 0, i64 0), double 2.400000e+02, double 4.640000e+02)
%15 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @.str.1, i64 0, i64 0), double 2.600000e+02, double 5.000000e+02)
%16 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @.str.1, i64 0, i64 0), double 2.800000e+02, double 5.360000e+02)
%17 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @.str.1, i64 0, i64 0), double 3.000000e+02, double 5.720000e+02)
ret i32 0
}