#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 /*<<< orphan*/ scanf(char *, float *);
int main(void) {
  float liters, gallons;
  printf("*** Liters to Gallons ***\n\n");
  printf("Enter the number of liters: ");
  scanf("%f", &liters);
  gallons = liters * 1.057 / 4.0;
  printf("%g liters = %g gallons\n", liters, gallons);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeda(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xee8(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xef7(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
movss  -0x8(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
movsd  0xe9c(%rip),%xmm1
mulsd  %xmm1,%xmm0
movsd  0xe88(%rip),%xmm1
divsd  %xmm1,%xmm0
cvtsd2ss %xmm0,%xmm0
movss  %xmm0,-0xc(%rbp)
movss  -0x8(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
movss  -0xc(%rbp),%xmm1
cvtss2sd %xmm1,%xmm1
lea    0xeae(%rip),%rdi
mov    $0x2,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xf10(%rip),%rdi
call   1030 <puts@plt>
lea    0xecc(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xedb(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1050 <scanf@plt>
movss  0x4(%rsp),%xmm0
cvtss2sd %xmm0,%xmm0
movsd  0xe92(%rip),%xmm1
mulsd  %xmm0,%xmm1
mulsd  0xe8e(%rip),%xmm1
cvtsd2ss %xmm1,%xmm1
cvtss2sd %xmm1,%xmm1
lea    0xea7(%rip),%rdi
mov    $0x2,%al
call   1040 <printf@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [28 x i8] c"*** Liters to Gallons ***\0A\0A\00"
@.str.1 = [29 x i8] c"Enter the number of liters: \00"
@.str.2 = [3 x i8] c"%f\00"
@.str.3 = [24 x i8] c"%g liters = %g gallons\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca float
%3 = alloca float
store i32 0, i32* %1
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str, i64 0, i64 0))
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([29 x i8], [29 x i8]* @.str.1, i64 0, i64 0))
%6 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0), float* %2)
%7 = load float, float* %2
%8 = fpext float %7 to double
%9 = fmul double %8, 1.057000e+00
%10 = fdiv double %9, 4.000000e+00
%11 = fptrunc double %10 to float
store float %11, float* %3
%12 = load float, float* %2
%13 = fpext float %12 to double
%14 = load float, float* %3
%15 = fpext float %14 to double
%16 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.3, i64 0, i64 0), double %13, double %15)
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [29 x i8] c"Enter the number of liters: \00"
@.str.2 = [3 x i8] c"%f\00"
@.str.3 = [24 x i8] c"%g liters = %g gallons\0A\00"
@str = [27 x i8] c"*** Liters to Gallons ***\0A\00"
define i32 @main() {
%1 = alloca float
%2 = bitcast float* %1 to i8*
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([27 x i8], [27 x i8]* @str, i64 0, i64 0))
%4 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([29 x i8], [29 x i8]* @.str.1, i64 0, i64 0))
%5 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0), float* %1)
%6 = load float, float* %1
%7 = fpext float %6 to double
%8 = fmul double %7, 1.057000e+00
%9 = fmul double %8, 2.500000e-01
%10 = fptrunc double %9 to float
%11 = fpext float %10 to double
%12 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([24 x i8], [24 x i8]* @.str.3, i64 0, i64 0), double %7, double %11)
ret i32 0
}