#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*/ fflush(int /*<<< orphan*/);
int /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ scanf(char *, float *);
int /*<<< orphan*/ stdout;
int main() {
  float fnum;
  printf("Enter a floating point number: ");
  fflush(stdout);
  scanf("%f", &fnum);
  printf("%f rounded is %d\n", fnum, (int)(fnum + 0.5));
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xec2(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    0x2e8c(%rip),%rax
mov    (%rax),%edi
call   1040 <fflush@plt>
lea    0xec6(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1050 <scanf@plt>
movss  -0x8(%rbp),%xmm0
cvtss2sd %xmm0,%xmm0
movss  -0x8(%rbp),%xmm1
cvtss2sd %xmm1,%xmm1
movsd  0xe7b(%rip),%xmm2
addsd  %xmm2,%xmm1
cvttsd2si %xmm1,%esi
lea    0xe97(%rip),%rdi
mov    $0x1,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xed0(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
mov    0x2e9a(%rip),%rax
mov    (%rax),%edi
call   1040 <fflush@plt>
lea    0xed4(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1050 <scanf@plt>
movss  0x4(%rsp),%xmm0
cvtss2sd %xmm0,%xmm0
movsd  0xe90(%rip),%xmm1
addsd  %xmm0,%xmm1
cvttsd2si %xmm1,%esi
lea    0xeac(%rip),%rdi
mov    $0x1,%al
call   1030 <printf@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [32 x i8] c"Enter a floating point number: \00"
@stdout = global i32 0
@.str.1 = [3 x i8] c"%f\00"
@.str.2 = [18 x i8] c"%f rounded is %d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca float
store i32 0, i32* %1
%3 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([32 x i8], [32 x i8]* @.str, i64 0, i64 0))
%4 = load i32, i32* @stdout
%5 = call i32 @fflush(i32 %4)
%6 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), float* %2)
%7 = load float, float* %2
%8 = fpext float %7 to double
%9 = load float, float* %2
%10 = fpext float %9 to double
%11 = fadd double %10, 5.000000e-01
%12 = fptosi double %11 to i32
%13 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str.2, i64 0, i64 0), double %8, i32 %12)
ret i32 0
}

LLVM IR (-O2):
@.str = [32 x i8] c"Enter a floating point number: \00"
@stdout = global i32 0
@.str.1 = [3 x i8] c"%f\00"
@.str.2 = [18 x i8] c"%f rounded is %d\0A\00"
define i32 @main() {
%1 = alloca float
%2 = bitcast float* %1 to i8*
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([32 x i8], [32 x i8]* @.str, i64 0, i64 0))
%4 = load i32, i32* @stdout
%5 = tail call i32 @fflush(i32 %4)
%6 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), float* %1)
%7 = load float, float* %1
%8 = fpext float %7 to double
%9 = fadd double %8, 5.000000e-01
%10 = fptosi double %9 to i32
%11 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([18 x i8], [18 x i8]* @.str.2, i64 0, i64 0), double %8, i32 %10)
ret i32 0
}