#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 */
double fahr_to_celsius(float);
int /*<<< orphan*/ printf(char *, ...);
int main() {
  float fahr;
  printf("Fahrenheit\tCelsius\n");
  for (fahr = 0; fahr <= 300; fahr += 20) {
    printf("%3.0f\t\t%6.1f\n", fahr, fahr_to_celsius(fahr));
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xed2(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xorps  %xmm0,%xmm0
movss  %xmm0,-0x8(%rbp)
movss  0xeb3(%rip),%xmm0
ucomiss -0x8(%rbp),%xmm0
jb     119c <main+0x7c>
movss  -0x8(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
movsd  %xmm0,-0x10(%rbp)
movss  -0x8(%rbp),%xmm0
call   1040 <fahr_to_celsius@plt>
movaps %xmm0,%xmm1
movsd  -0x10(%rbp),%xmm0
lea    0xe9e(%rip),%rdi
mov    $0x2,%al
call   1030 <printf@plt>
movss  0xe77(%rip),%xmm0
addss  -0x8(%rbp),%xmm0
movss  %xmm0,-0x8(%rbp)
jmp    1145 <main+0x25>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
lea    0xf8e(%rip),%rdi
call   1030 <puts@plt>
xorps  %xmm0,%xmm0
call   1050 <fahr_to_celsius@plt>
movaps %xmm0,%xmm1
lea    0xf69(%rip),%rbx
xorps  %xmm0,%xmm0
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movss  0xe9c(%rip),%xmm0
call   1050 <fahr_to_celsius@plt>
movaps %xmm0,%xmm1
movsd  0xecc(%rip),%xmm0
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movss  0xe7e(%rip),%xmm0
call   1050 <fahr_to_celsius@plt>
movaps %xmm0,%xmm1
movsd  0xeb2(%rip),%xmm0
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movss  0xe60(%rip),%xmm0
call   1050 <fahr_to_celsius@plt>
movaps %xmm0,%xmm1
movsd  0xe98(%rip),%xmm0
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movss  0xe42(%rip),%xmm0
call   1050 <fahr_to_celsius@plt>
movaps %xmm0,%xmm1
movsd  0xe7e(%rip),%xmm0
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movss  0xe24(%rip),%xmm0
call   1050 <fahr_to_celsius@plt>
movaps %xmm0,%xmm1
movsd  0xe64(%rip),%xmm0
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movss  0xe06(%rip),%xmm0
call   1050 <fahr_to_celsius@plt>
movaps %xmm0,%xmm1
movsd  0xe4a(%rip),%xmm0
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movss  0xde8(%rip),%xmm0
call   1050 <fahr_to_celsius@plt>
movaps %xmm0,%xmm1
movsd  0xe30(%rip),%xmm0
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movss  0xdca(%rip),%xmm0
call   1050 <fahr_to_celsius@plt>
movaps %xmm0,%xmm1
movsd  0xe16(%rip),%xmm0
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movss  0xdac(%rip),%xmm0
call   1050 <fahr_to_celsius@plt>
movaps %xmm0,%xmm1
movsd  0xdfc(%rip),%xmm0
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movss  0xd8e(%rip),%xmm0
call   1050 <fahr_to_celsius@plt>
movaps %xmm0,%xmm1
movsd  0xde2(%rip),%xmm0
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movss  0xd70(%rip),%xmm0
call   1050 <fahr_to_celsius@plt>
movaps %xmm0,%xmm1
movsd  0xdc8(%rip),%xmm0
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movss  0xd52(%rip),%xmm0
call   1050 <fahr_to_celsius@plt>
movaps %xmm0,%xmm1
movsd  0xdae(%rip),%xmm0
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movss  0xd34(%rip),%xmm0
call   1050 <fahr_to_celsius@plt>
movaps %xmm0,%xmm1
movsd  0xd94(%rip),%xmm0
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movss  0xd16(%rip),%xmm0
call   1050 <fahr_to_celsius@plt>
movaps %xmm0,%xmm1
movsd  0xd7a(%rip),%xmm0
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
movss  0xcf8(%rip),%xmm0
call   1050 <fahr_to_celsius@plt>
movaps %xmm0,%xmm1
movsd  0xd60(%rip),%xmm0
mov    %rbx,%rdi
mov    $0x2,%al
call   1040 <printf@plt>
xor    %eax,%eax
pop    %rbx
ret

LLVM IR (-O0):
@.str = [20 x i8] c"Fahrenheit\09Celsius\0A\00"
@.str.1 = [14 x i8] c"%3.0f\09\09%6.1f\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca float
store i32 0, i32* %1
%3 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str, i64 0, i64 0))
store float 0.000000e+00, float* %2
br label %4
4: ; preds = %13, %0
%5 = load float, float* %2
%6 = fcmp ole float %5, 3.000000e+02
br i1 %6, label %7, label %16
7: ; preds = %4
%8 = load float, float* %2
%9 = fpext float %8 to double
%10 = load float, float* %2
%11 = call double @fahr_to_celsius(float %10)
%12 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.1, i64 0, i64 0), double %9, double %11)
br label %13
13: ; preds = %7
%14 = load float, float* %2
%15 = fadd float %14, 2.000000e+01
store float %15, float* %2
br label %4
16: ; preds = %4
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [14 x i8] c"%3.0f\09\09%6.1f\0A\00"
@str = [19 x i8] c"Fahrenheit\09Celsius\00"
define i32 @main() {
%1 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([19 x i8], [19 x i8]* @str, i64 0, i64 0))
%2 = tail call double @fahr_to_celsius(float 0.000000e+00)
%3 = 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 %2)
%4 = tail call double @fahr_to_celsius(float 2.000000e+01)
%5 = 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 %4)
%6 = tail call double @fahr_to_celsius(float 4.000000e+01)
%7 = 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 %6)
%8 = tail call double @fahr_to_celsius(float 6.000000e+01)
%9 = 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 %8)
%10 = tail call double @fahr_to_celsius(float 8.000000e+01)
%11 = 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 %10)
%12 = tail call double @fahr_to_celsius(float 1.000000e+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 1.000000e+02, double %12)
%14 = tail call double @fahr_to_celsius(float 1.200000e+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 1.200000e+02, double %14)
%16 = tail call double @fahr_to_celsius(float 1.400000e+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 1.400000e+02, double %16)
%18 = tail call double @fahr_to_celsius(float 1.600000e+02)
%19 = 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 %18)
%20 = tail call double @fahr_to_celsius(float 1.800000e+02)
%21 = 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 %20)
%22 = tail call double @fahr_to_celsius(float 2.000000e+02)
%23 = 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 %22)
%24 = tail call double @fahr_to_celsius(float 2.200000e+02)
%25 = 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 %24)
%26 = tail call double @fahr_to_celsius(float 2.400000e+02)
%27 = 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 %26)
%28 = tail call double @fahr_to_celsius(float 2.600000e+02)
%29 = 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 %28)
%30 = tail call double @fahr_to_celsius(float 2.800000e+02)
%31 = 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 %30)
%32 = tail call double @fahr_to_celsius(float 3.000000e+02)
%33 = 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 %32)
ret i32 0
}